This document discusses cartilage healing and grafting. It begins by describing the three main types of cartilage - hyaline, fibrocartilage, and elastic cartilage. Hyaline cartilage is the most common type. Perichondrium plays an important role in cartilage regeneration, as it contains mesenchymal stem cells. Autologous cartilage grafts can be taken from the ear, nose, ribs, and perichondrium. Tissue engineering is also being used to generate cartilage grafts by seeding cells onto scaffolds. Both natural and synthetic scaffolds are being explored. Future areas of research include stem cell-based cartilage engineering and enhancing mechanical strength of engineered cartilage.
Cartilage grafts are used in reconstructive surgery and can be classified by their matrix, source, or type. Autografts using cartilage from the ear, nose, or ribs are most commonly used. Cartilage grafts survive through nutrient diffusion and have low immunogenicity. They are shaped and contoured during surgery but may warp over time without perichondrium on all sides. Diced cartilage grafts use small cartilage pieces that integrate with ingrowth of tissue. Autografts contain living chondrocytes that allow growth, while allografts slowly resorb.
Use of grafts & alloplastic material in maxillofacial traumaDr. SHEETAL KAPSE
The document discusses various graft materials that can be used for head and neck reconstruction. It covers bone grafts, cartilage grafts, muscle grafts, skin grafts, nerve grafts, vessel grafts, fat grafts, and alloplastic graft materials. For each type of graft, it discusses principles of harvesting and placement, as well as outcomes. Regional sites are described for harvesting bone grafts. Principles of skin graft healing and nerve repair techniques are also summarized. Common alloplastic graft materials discussed include silicone, expanded polytetrafluoroethylene, and high-density polyethylene.
This document provides an overview of regenerative periodontal surgery techniques. It discusses the historical concepts of periodontal regeneration including bone grafts, guided tissue regeneration (GTR), and the emerging field of tissue engineering. Key cellular mediators and signaling molecules that can promote periodontal regeneration are described, including platelet-derived growth factor, bone morphogenetic proteins, insulin-like growth factor, and enamel matrix derivative. The document also reviews the different cell types involved in periodontal regeneration, including dental pulp stem cells, periodontal ligament stem cells, dental follicle progenitor cells, and dental epithelial stem cells. The criteria for achieving true periodontal regeneration and methods to guide cell differentiation and maturation are also summarized.
CTE ppt on CARTILAGE TISSUE ENGINEERING.pdfKhushbu
This document discusses cartilage tissue engineering. It begins by defining cartilage and its composition, structure, and functions. It then discusses why cartilage tissue engineering is needed due to injuries, degeneration, and diseases. Current treatment methods like marrow stimulation, mosaicplasty, and cell-based therapies are described. Key aspects of cartilage tissue engineering are explained in brief, including suitable cell sources, signaling molecules, and biomaterials used. Both natural biomaterials like collagen and synthetic ones like PEG are highlighted.
Dr. Raghavendra Raju gave a presentation on tissue engineering. He began by defining key terms like tissue engineering, regenerative medicine, bionics, biomimetic materials, and stem cell therapy. The basic principles of tissue engineering involve using artificial or inert scaffold materials combined with living cells to grow desired tissues. Mesenchymal stem cells from bone marrow are commonly used due to their ability to differentiate into bone and cartilage cells. Applications in orthopedics include treating bone defects, fractures that won't heal, cartilage damage, and tendon/meniscus injuries. Future advances in fields like molecular biology and tissue engineering may help manage anatomical changes from disease.
The document discusses scaffolds for tissue engineering. It defines scaffolds as temporary or permanent artificial extracellular matrices that accommodate cells and support 3D tissue regeneration. Scaffolds aim to mimic the natural extracellular matrix and promote cell response to engineer replacement tissues. The key requirements for scaffolds are that they be porous, biocompatible, and have properties matching the target tissue. Various fabrication techniques can be used to control the scaffold architecture, composition, and other properties. Common scaffold materials discussed include natural polymers like collagen and synthetic polymers.
Types of bone and membrane used in guided tissue regeneration UGDS2014
This document discusses types of membranes and bone used in guided tissue regeneration. It describes how guided tissue regeneration uses membranes or barriers to separate gingival tissue from the periodontal ligament and bone, allowing repopulation of the area by periodontal ligament cells. The document outlines different generations of membranes, including non-resorbable, resorbable, and resorbable membranes containing growth factors. It also discusses various types of bone grafts used in guided tissue regeneration, including their mechanisms of bone growth promotion.
The document discusses various techniques for mandibular reconstruction, including non-vascularized bone grafts and vascularized bone flaps. It states that free vascularized bone flaps have become the most popular technique as they heal more rapidly and have less risk of complications compared to non-vascularized grafts. Common types of free flaps used include fibula flaps based on the peroneal artery and iliac crest flaps based on the deep circumflex iliac artery.
Cartilage grafts are used in reconstructive surgery and can be classified by their matrix, source, or type. Autografts using cartilage from the ear, nose, or ribs are most commonly used. Cartilage grafts survive through nutrient diffusion and have low immunogenicity. They are shaped and contoured during surgery but may warp over time without perichondrium on all sides. Diced cartilage grafts use small cartilage pieces that integrate with ingrowth of tissue. Autografts contain living chondrocytes that allow growth, while allografts slowly resorb.
Use of grafts & alloplastic material in maxillofacial traumaDr. SHEETAL KAPSE
The document discusses various graft materials that can be used for head and neck reconstruction. It covers bone grafts, cartilage grafts, muscle grafts, skin grafts, nerve grafts, vessel grafts, fat grafts, and alloplastic graft materials. For each type of graft, it discusses principles of harvesting and placement, as well as outcomes. Regional sites are described for harvesting bone grafts. Principles of skin graft healing and nerve repair techniques are also summarized. Common alloplastic graft materials discussed include silicone, expanded polytetrafluoroethylene, and high-density polyethylene.
This document provides an overview of regenerative periodontal surgery techniques. It discusses the historical concepts of periodontal regeneration including bone grafts, guided tissue regeneration (GTR), and the emerging field of tissue engineering. Key cellular mediators and signaling molecules that can promote periodontal regeneration are described, including platelet-derived growth factor, bone morphogenetic proteins, insulin-like growth factor, and enamel matrix derivative. The document also reviews the different cell types involved in periodontal regeneration, including dental pulp stem cells, periodontal ligament stem cells, dental follicle progenitor cells, and dental epithelial stem cells. The criteria for achieving true periodontal regeneration and methods to guide cell differentiation and maturation are also summarized.
CTE ppt on CARTILAGE TISSUE ENGINEERING.pdfKhushbu
This document discusses cartilage tissue engineering. It begins by defining cartilage and its composition, structure, and functions. It then discusses why cartilage tissue engineering is needed due to injuries, degeneration, and diseases. Current treatment methods like marrow stimulation, mosaicplasty, and cell-based therapies are described. Key aspects of cartilage tissue engineering are explained in brief, including suitable cell sources, signaling molecules, and biomaterials used. Both natural biomaterials like collagen and synthetic ones like PEG are highlighted.
Dr. Raghavendra Raju gave a presentation on tissue engineering. He began by defining key terms like tissue engineering, regenerative medicine, bionics, biomimetic materials, and stem cell therapy. The basic principles of tissue engineering involve using artificial or inert scaffold materials combined with living cells to grow desired tissues. Mesenchymal stem cells from bone marrow are commonly used due to their ability to differentiate into bone and cartilage cells. Applications in orthopedics include treating bone defects, fractures that won't heal, cartilage damage, and tendon/meniscus injuries. Future advances in fields like molecular biology and tissue engineering may help manage anatomical changes from disease.
The document discusses scaffolds for tissue engineering. It defines scaffolds as temporary or permanent artificial extracellular matrices that accommodate cells and support 3D tissue regeneration. Scaffolds aim to mimic the natural extracellular matrix and promote cell response to engineer replacement tissues. The key requirements for scaffolds are that they be porous, biocompatible, and have properties matching the target tissue. Various fabrication techniques can be used to control the scaffold architecture, composition, and other properties. Common scaffold materials discussed include natural polymers like collagen and synthetic polymers.
Types of bone and membrane used in guided tissue regeneration UGDS2014
This document discusses types of membranes and bone used in guided tissue regeneration. It describes how guided tissue regeneration uses membranes or barriers to separate gingival tissue from the periodontal ligament and bone, allowing repopulation of the area by periodontal ligament cells. The document outlines different generations of membranes, including non-resorbable, resorbable, and resorbable membranes containing growth factors. It also discusses various types of bone grafts used in guided tissue regeneration, including their mechanisms of bone growth promotion.
The document discusses various techniques for mandibular reconstruction, including non-vascularized bone grafts and vascularized bone flaps. It states that free vascularized bone flaps have become the most popular technique as they heal more rapidly and have less risk of complications compared to non-vascularized grafts. Common types of free flaps used include fibula flaps based on the peroneal artery and iliac crest flaps based on the deep circumflex iliac artery.
Two cartilage regeneration techniques are briefly covered: Autologous Chondrocyte Implantation (ACI) and Autologous Matrix-Induced Chondrogenesis (AMIC). ACI involves taking cartilage cells from a non-load bearing area, multiplying them in a lab, and re-injecting them into damaged cartilage in two surgeries. AMIC requires only one surgery - the damaged cartilage is removed, the area is stimulated with microfractures, and a collagen membrane placed over the site promotes new cartilage growth from stem cells. These techniques and bio-scaffold technologies offer potential long-term solutions for cartilage conditions and regeneration of original cartilage properties.
This document summarizes a randomized clinical trial comparing the bone quality of free autogenous bone grafts harvested from two mandibular donor sites (chin and retromolar region) for maxillary alveolar ridge augmentation. 14 patients received either chin (n=7) or retromolar (n=7) shell grafts fixed with screws. 6 months post-op, 42 core biopsies were analyzed and found the chin shells had a higher bone area percent (52.53% vs 47.97%) indicating better bone quality and stability compared to retromolar grafts.
This document discusses the use of bone grafts in periodontal reconstruction. It begins with an introduction and definitions of key terms like regeneration, repair, new attachment, and reattachment. It then covers the classification of bone grafts into autografts, allografts, and xenografts. Specific types of grafts are explained like DFDBA, FDBA, Bio-Oss, and various xenograft materials. The roles of osteogenesis, osteoinduction and osteoconduction in graft incorporation are defined. Factors for successful graft outcomes are noted.
Advanced Bone grafting procedures in dental implant surgeryDr Omfs
This document summarizes an oral presentation on advanced surgical procedures in implant dentistry. It discusses various grafting techniques like alveolar socket preservation, onlay grafting, interpositional grafting, sandwich osteotomy, alveolar ridge split osteotomy, distraction osteogenesis, and sinus lift surgery. It also covers principles of grafting, types of grafts including autogenous, allogenic and xenogenic grafts. Soft tissue management techniques like palatal connective tissue grafting are presented. Complications of grafting procedures and post-operative care are also summarized.
The document discusses the structure and types of cartilage. There are three main types of cartilage - hyaline, elastic, and fibrocartilage. Each type has a different composition and location in the body. Hyaline cartilage is the most common and found in locations like costal cartilage and joints. It has collagen type II fibers in a basophilic matrix. Elastic cartilage contains elastic fibers and is found in the ear and larynx. Fibrocartilage contains dense collagen type I fibers and acts as a shock absorber at sites like the intervertebral discs. All cartilage types contain chondrocytes in lacunae within the avascular matrix and grow through interstitial or appositional methods.
Soft tissue considerations for implant placementGanesh Nair
pre and post soft tissue considerations prior and post implant placement including various surgical technique for simple and advanced soft tissue augmentation
This document discusses cartilage tissue. It defines cartilage tissue as a specialized connective tissue composed of special cells called chondrocytes and extracellular fibers embedded in a gel-like matrix. It describes the three main types of cartilage - hyaline, elastic, and fibrocartilage - and discusses their histological structure, localization in the body, and growth and regeneration processes. The key roles and functions of cartilage tissue are also outlined.
This article compares three-dimensional alterations following the use of autogenous versus allogeneic onlay grafts for augmentation at single tooth sites. Autogenous bone grafts from the chin or ramus were compared to freeze-dried allogeneic bone grafts. Cone beam computed tomography scans were used to evaluate changes in graft and defect volumes at 6 months. Both graft types resulted in significant bone fill, with autogenous grafts showing slightly more volume gain. Allogeneic grafts require less surgery time and morbidity compared to autogenous grafts.
Reconstructive periodontal therapy
Some of the slides may appear Blank/White/Black, those are the Videos that I added in the presentation.
Kindly Ignore those slides.
Autologous Mesenchymal Stem Cells in OrthopaedicsVladimir Bobic
Nuffield Health, The Grosvenor Hospital Chester, UK
27 June 2013. GP and Physiotherapy Seminar: Autologous Stem Cell Therapies in Orthopaedics. Moderator and Presenter: Vladimir Bobic, Chester Knee Clinic
This document discusses developing modular microenvironments that mimic articular cartilage to promote chondrogenic differentiation of mesenchymal stem cells for cartilage repair therapies. Specifically, it describes:
1) Encapsulating human mesenchymal stem cells in agarose microbeads containing 0%, 10%, or 20% collagen type II to represent the proteoglycan and collagen components of cartilage.
2) Characterizing the microbeads in terms of structure, size, protein content, and ability to support cell viability and differentiation.
3) Finding that inclusion of collagen type II in the agarose matrices promoted chondrogenic differentiation of mesenchymal stem cells compared to agarose alone.
This document discusses tissue engineering techniques in endodontics, specifically root canal revascularization. It begins by defining regenerative endodontics and its goal of regenerating damaged dental tissues. The key elements of tissue engineering are then explained: stem cells, growth factors, and scaffolds. Various techniques are described, including revascularization via blood clotting, postnatal stem cell therapy, scaffold and pulp implantation. The document outlines the objectives and components of regenerative endodontic treatment, including a case selection and disinfection protocol for revascularization. In under 3 sentences, this document discusses regenerative endodontic techniques for tissue engineering and regenerating damaged dental tissues, outlining the key elements and various approaches, including a protocol for revascularization
This document discusses principles of reconstructive surgery for jaw defects. It describes different types of bone grafts including autogenous, allogeneic, and xenogeneic grafts. Autogenous grafts are preferred as they provide osteogenic cells and avoid immunological rejection. The two-phase theory of osteogenesis involving initial bone formation from transplanted cells followed by host cell involvement is explained. Surgical principles for bone grafting procedures include controlling residual jaw segments, preparing a soft tissue bed, immobilizing grafts, maintaining asepsis, and using systemic antibiotics prophylactically.
Regenerative techniques for periodontal therapyEnas Elgendy
This document discusses graft materials and procedures for restoring periodontal osseous defects, as well as the principles of guided tissue regeneration (GTR). It describes the potential of autografts, allografts, and xenografts to promote osteogenesis, osteoinduction, and osteoconduction. The challenges of transplanting materials into periodontal defects are outlined. Techniques for GTR involve placing barriers to exclude epithelium and favor regeneration. Membranes can be non-resorbable like ePTFE or resorbable like collagen, polyglycolic acid, or polylactic acid polymers. Proper technique and postoperative care are important for successful regeneration.
Bone grafting involves using bone material to fill bony defects. There are several types of grafts including autografts harvested from a patient's own body, allografts from cadavers, and synthetic grafts. Autografts are most osteoinductive but require a donor site, while allografts avoid donor site morbidity but carry infection risks. Common graft sources are the iliac crest, tibia, and fibula. Grafts can be cortical, cancellous, or vascularized. Proper graft incorporation depends on its osteoconductivity, osteoinductivity and osteogenicity as well as local and systemic patient factors.
This document discusses tissue engineering principles and their application to periodontal regeneration. It outlines that tissue engineering involves enhancing biologic processes or developing implantable products to modify deficient tissues. For periodontal regeneration specifically, the goal is to restore the original architecture and function of periodontal tissues affected by disease. Various techniques for periodontal regeneration are discussed, including guided tissue regeneration using membranes, root surface conditioning, and use of regenerative materials like ceramics, growth factors, and stem cells. Successful regeneration requires balancing cells, signaling molecules, and scaffolds in both in vitro and in vivo contexts.
Bone grafts are materials used to replace or augment bone. They work through osteoconduction, osteoinduction, and osteogenesis. Common graft materials used for periodontal defects include autografts obtained from the patient, allografts from other humans, xenografts from other species, and alloplasts which are synthetic grafts. Demineralized freeze-dried bone allograft is often used as it promotes bone formation through osteoinduction without the morbidity of harvesting autografts. The procedure involves graft placement in the defect followed by flap closure and post-operative care including plaque control to support healing.
This document discusses research on using mesenchymal stem cells and biomaterials for regenerative medicine applications. Specifically, it examines using marrow stromal cells and engineered scaffolds to generate bone and cartilage tissues. It describes experiments showing marrow stromal cells can form bone in vivo and discusses strategies for controlling the shape of regenerated tissues using cell-seeded biodegradable polymer sheets and scaffolds.
This document provides an overview of periodontal wound healing and regeneration following periodontal surgery. It defines regeneration as the reproduction of lost or injured periodontal tissues, including cementum, periodontal ligament, and alveolar bone. Successful regeneration is assessed through probing, radiographs, direct measurements, and histology. The document discusses factors that influence regeneration outcomes, such as the surgical technique and local wound environment. Regenerative therapies aim to fully restore the lost periodontal structure and function.
Biomaterials were defined as “any substance, other than a drug, or a combination of substances, synthetic or natural in origin, which can be used for any period of time, as a whole or as a part of a system, which treats, augments or replaces any tissue, organ or function of the body”
Cardiomyopathies are diseases that affect the heart muscle and can be either primary or secondary. The main types are dilated cardiomyopathy, which causes the ventricles to stretch and thin, and hypertrophic cardiomyopathy, where the ventricular walls thicken. Dilated cardiomyopathy clinical features include decreased contractility and cardiac remodeling, and treatments focus on decreasing preload and afterload. Hypertrophic cardiomyopathy is the most common genetic cardiomyopathy and causes abnormal thickening of the left ventricle, with clinical features including pulsus bisferiens and outflow tract obstruction. Treatments for hypertrophic cardiomyopathy aim to decrease preload and afterload.
This document provides an overview of burn management and treatment. It discusses the different types of burns including thermal, chemical, electrical, and radiation burns. It describes burn depth classification and assessment tools like the Rule of Nines. It outlines the principles of burn resuscitation and fluid management over the first 72 hours. It also covers monitoring, wound care, infections, surgical procedures, and first aid for burns. The goal is to prevent shock, maintain organ perfusion, control infections, and promote wound healing.
Two cartilage regeneration techniques are briefly covered: Autologous Chondrocyte Implantation (ACI) and Autologous Matrix-Induced Chondrogenesis (AMIC). ACI involves taking cartilage cells from a non-load bearing area, multiplying them in a lab, and re-injecting them into damaged cartilage in two surgeries. AMIC requires only one surgery - the damaged cartilage is removed, the area is stimulated with microfractures, and a collagen membrane placed over the site promotes new cartilage growth from stem cells. These techniques and bio-scaffold technologies offer potential long-term solutions for cartilage conditions and regeneration of original cartilage properties.
This document summarizes a randomized clinical trial comparing the bone quality of free autogenous bone grafts harvested from two mandibular donor sites (chin and retromolar region) for maxillary alveolar ridge augmentation. 14 patients received either chin (n=7) or retromolar (n=7) shell grafts fixed with screws. 6 months post-op, 42 core biopsies were analyzed and found the chin shells had a higher bone area percent (52.53% vs 47.97%) indicating better bone quality and stability compared to retromolar grafts.
This document discusses the use of bone grafts in periodontal reconstruction. It begins with an introduction and definitions of key terms like regeneration, repair, new attachment, and reattachment. It then covers the classification of bone grafts into autografts, allografts, and xenografts. Specific types of grafts are explained like DFDBA, FDBA, Bio-Oss, and various xenograft materials. The roles of osteogenesis, osteoinduction and osteoconduction in graft incorporation are defined. Factors for successful graft outcomes are noted.
Advanced Bone grafting procedures in dental implant surgeryDr Omfs
This document summarizes an oral presentation on advanced surgical procedures in implant dentistry. It discusses various grafting techniques like alveolar socket preservation, onlay grafting, interpositional grafting, sandwich osteotomy, alveolar ridge split osteotomy, distraction osteogenesis, and sinus lift surgery. It also covers principles of grafting, types of grafts including autogenous, allogenic and xenogenic grafts. Soft tissue management techniques like palatal connective tissue grafting are presented. Complications of grafting procedures and post-operative care are also summarized.
The document discusses the structure and types of cartilage. There are three main types of cartilage - hyaline, elastic, and fibrocartilage. Each type has a different composition and location in the body. Hyaline cartilage is the most common and found in locations like costal cartilage and joints. It has collagen type II fibers in a basophilic matrix. Elastic cartilage contains elastic fibers and is found in the ear and larynx. Fibrocartilage contains dense collagen type I fibers and acts as a shock absorber at sites like the intervertebral discs. All cartilage types contain chondrocytes in lacunae within the avascular matrix and grow through interstitial or appositional methods.
Soft tissue considerations for implant placementGanesh Nair
pre and post soft tissue considerations prior and post implant placement including various surgical technique for simple and advanced soft tissue augmentation
This document discusses cartilage tissue. It defines cartilage tissue as a specialized connective tissue composed of special cells called chondrocytes and extracellular fibers embedded in a gel-like matrix. It describes the three main types of cartilage - hyaline, elastic, and fibrocartilage - and discusses their histological structure, localization in the body, and growth and regeneration processes. The key roles and functions of cartilage tissue are also outlined.
This article compares three-dimensional alterations following the use of autogenous versus allogeneic onlay grafts for augmentation at single tooth sites. Autogenous bone grafts from the chin or ramus were compared to freeze-dried allogeneic bone grafts. Cone beam computed tomography scans were used to evaluate changes in graft and defect volumes at 6 months. Both graft types resulted in significant bone fill, with autogenous grafts showing slightly more volume gain. Allogeneic grafts require less surgery time and morbidity compared to autogenous grafts.
Reconstructive periodontal therapy
Some of the slides may appear Blank/White/Black, those are the Videos that I added in the presentation.
Kindly Ignore those slides.
Autologous Mesenchymal Stem Cells in OrthopaedicsVladimir Bobic
Nuffield Health, The Grosvenor Hospital Chester, UK
27 June 2013. GP and Physiotherapy Seminar: Autologous Stem Cell Therapies in Orthopaedics. Moderator and Presenter: Vladimir Bobic, Chester Knee Clinic
This document discusses developing modular microenvironments that mimic articular cartilage to promote chondrogenic differentiation of mesenchymal stem cells for cartilage repair therapies. Specifically, it describes:
1) Encapsulating human mesenchymal stem cells in agarose microbeads containing 0%, 10%, or 20% collagen type II to represent the proteoglycan and collagen components of cartilage.
2) Characterizing the microbeads in terms of structure, size, protein content, and ability to support cell viability and differentiation.
3) Finding that inclusion of collagen type II in the agarose matrices promoted chondrogenic differentiation of mesenchymal stem cells compared to agarose alone.
This document discusses tissue engineering techniques in endodontics, specifically root canal revascularization. It begins by defining regenerative endodontics and its goal of regenerating damaged dental tissues. The key elements of tissue engineering are then explained: stem cells, growth factors, and scaffolds. Various techniques are described, including revascularization via blood clotting, postnatal stem cell therapy, scaffold and pulp implantation. The document outlines the objectives and components of regenerative endodontic treatment, including a case selection and disinfection protocol for revascularization. In under 3 sentences, this document discusses regenerative endodontic techniques for tissue engineering and regenerating damaged dental tissues, outlining the key elements and various approaches, including a protocol for revascularization
This document discusses principles of reconstructive surgery for jaw defects. It describes different types of bone grafts including autogenous, allogeneic, and xenogeneic grafts. Autogenous grafts are preferred as they provide osteogenic cells and avoid immunological rejection. The two-phase theory of osteogenesis involving initial bone formation from transplanted cells followed by host cell involvement is explained. Surgical principles for bone grafting procedures include controlling residual jaw segments, preparing a soft tissue bed, immobilizing grafts, maintaining asepsis, and using systemic antibiotics prophylactically.
Regenerative techniques for periodontal therapyEnas Elgendy
This document discusses graft materials and procedures for restoring periodontal osseous defects, as well as the principles of guided tissue regeneration (GTR). It describes the potential of autografts, allografts, and xenografts to promote osteogenesis, osteoinduction, and osteoconduction. The challenges of transplanting materials into periodontal defects are outlined. Techniques for GTR involve placing barriers to exclude epithelium and favor regeneration. Membranes can be non-resorbable like ePTFE or resorbable like collagen, polyglycolic acid, or polylactic acid polymers. Proper technique and postoperative care are important for successful regeneration.
Bone grafting involves using bone material to fill bony defects. There are several types of grafts including autografts harvested from a patient's own body, allografts from cadavers, and synthetic grafts. Autografts are most osteoinductive but require a donor site, while allografts avoid donor site morbidity but carry infection risks. Common graft sources are the iliac crest, tibia, and fibula. Grafts can be cortical, cancellous, or vascularized. Proper graft incorporation depends on its osteoconductivity, osteoinductivity and osteogenicity as well as local and systemic patient factors.
This document discusses tissue engineering principles and their application to periodontal regeneration. It outlines that tissue engineering involves enhancing biologic processes or developing implantable products to modify deficient tissues. For periodontal regeneration specifically, the goal is to restore the original architecture and function of periodontal tissues affected by disease. Various techniques for periodontal regeneration are discussed, including guided tissue regeneration using membranes, root surface conditioning, and use of regenerative materials like ceramics, growth factors, and stem cells. Successful regeneration requires balancing cells, signaling molecules, and scaffolds in both in vitro and in vivo contexts.
Bone grafts are materials used to replace or augment bone. They work through osteoconduction, osteoinduction, and osteogenesis. Common graft materials used for periodontal defects include autografts obtained from the patient, allografts from other humans, xenografts from other species, and alloplasts which are synthetic grafts. Demineralized freeze-dried bone allograft is often used as it promotes bone formation through osteoinduction without the morbidity of harvesting autografts. The procedure involves graft placement in the defect followed by flap closure and post-operative care including plaque control to support healing.
This document discusses research on using mesenchymal stem cells and biomaterials for regenerative medicine applications. Specifically, it examines using marrow stromal cells and engineered scaffolds to generate bone and cartilage tissues. It describes experiments showing marrow stromal cells can form bone in vivo and discusses strategies for controlling the shape of regenerated tissues using cell-seeded biodegradable polymer sheets and scaffolds.
This document provides an overview of periodontal wound healing and regeneration following periodontal surgery. It defines regeneration as the reproduction of lost or injured periodontal tissues, including cementum, periodontal ligament, and alveolar bone. Successful regeneration is assessed through probing, radiographs, direct measurements, and histology. The document discusses factors that influence regeneration outcomes, such as the surgical technique and local wound environment. Regenerative therapies aim to fully restore the lost periodontal structure and function.
Biomaterials were defined as “any substance, other than a drug, or a combination of substances, synthetic or natural in origin, which can be used for any period of time, as a whole or as a part of a system, which treats, augments or replaces any tissue, organ or function of the body”
Cardiomyopathies are diseases that affect the heart muscle and can be either primary or secondary. The main types are dilated cardiomyopathy, which causes the ventricles to stretch and thin, and hypertrophic cardiomyopathy, where the ventricular walls thicken. Dilated cardiomyopathy clinical features include decreased contractility and cardiac remodeling, and treatments focus on decreasing preload and afterload. Hypertrophic cardiomyopathy is the most common genetic cardiomyopathy and causes abnormal thickening of the left ventricle, with clinical features including pulsus bisferiens and outflow tract obstruction. Treatments for hypertrophic cardiomyopathy aim to decrease preload and afterload.
This document provides an overview of burn management and treatment. It discusses the different types of burns including thermal, chemical, electrical, and radiation burns. It describes burn depth classification and assessment tools like the Rule of Nines. It outlines the principles of burn resuscitation and fluid management over the first 72 hours. It also covers monitoring, wound care, infections, surgical procedures, and first aid for burns. The goal is to prevent shock, maintain organ perfusion, control infections, and promote wound healing.
Biofilms are communities of microorganisms that attach to surfaces and produce extracellular polymeric substances that can embed the microbes. Biofilms are prevalent in nature and hospital settings. Microbes in biofilms are more resistant to antibiotics and host defenses than individual planktonic cells. About 90% of chronic wounds contain bacteria and fungi living within biofilms, which delays wound healing and causes chronic inflammation. Treating biofilm infections is challenging as high concentrations of antibiotics are needed to penetrate the protective biofilm matrix. Thorough debridement and use of anti-biofilm agents like honey or silver are needed to manage biofilm-related wounds.
Liposuction is a surgical procedure that uses suction to break up and remove fat deposits from under the skin. There are several methods of liposuction including suction-assisted, power-assisted, ultrasound-assisted, VASER-assisted, and laser-assisted liposuction. Each method uses different technologies like cannulas, ultrasound, or lasers to break up fat before suctioning it out. Common areas treated are the abdomen, hips/flanks, buttocks, thighs, and neck. Postoperative care involves compression garments, antibiotics, analgesics, and lymphatic massage to aid recovery. Complications can range from minor issues like nausea to risks associated with any surgery like infection.
The document outlines the work plan for a CME event in July 2023. It divides responsibilities among three teams: the Inviter Team led by Dr. Sree Charan which will handle guest communication and logistics; the Base Work Team led by Dr. Govindharaj which will manage design, sponsors, food, and hall setup; and the Show Team led by Dr. Sree Charan which will organize topics, the event sequence, seating, decorations, and presentations. Each team is assigned specific tasks to ensure the successful planning and execution of the CME.
This document provides instructions for liposuction procedures. It lists recommended cannula sizes and wetting solutions for liposuction, local anesthetic mixtures, volume classifications for liposuction procedures from conventional to super mega, appropriate suction pressures, and applications of macro, micro, and nano fat grafting. The document was written as a guide for liposuction instrument use and techniques.
Acute rheumatic fever is an autoimmune disease that can occur after a streptococcal throat infection. It commonly affects children ages 5-14 and causes arthritis, carditis, chorea, and skin manifestations. If not properly treated, it can lead to rheumatic heart disease, which is the most common cause of acquired valvular heart disease in developing countries. Treatment involves antibiotics to prevent recurrence, as well as medications for symptoms like arthritis, heart failure, and chorea. Strict adherence to secondary prevention protocols using long-term antibiotics can decrease the severity and progression of rheumatic heart disease by 50-70%.
Integrating Ayurveda into Parkinson’s Management: A Holistic ApproachAyurveda ForAll
Explore the benefits of combining Ayurveda with conventional Parkinson's treatments. Learn how a holistic approach can manage symptoms, enhance well-being, and balance body energies. Discover the steps to safely integrate Ayurvedic practices into your Parkinson’s care plan, including expert guidance on diet, herbal remedies, and lifestyle modifications.
Local Advanced Lung Cancer: Artificial Intelligence, Synergetics, Complex Sys...Oleg Kshivets
Overall life span (LS) was 1671.7±1721.6 days and cumulative 5YS reached 62.4%, 10 years – 50.4%, 20 years – 44.6%. 94 LCP lived more than 5 years without cancer (LS=2958.6±1723.6 days), 22 – more than 10 years (LS=5571±1841.8 days). 67 LCP died because of LC (LS=471.9±344 days). AT significantly improved 5YS (68% vs. 53.7%) (P=0.028 by log-rank test). Cox modeling displayed that 5YS of LCP significantly depended on: N0-N12, T3-4, blood cell circuit, cell ratio factors (ratio between cancer cells-CC and blood cells subpopulations), LC cell dynamics, recalcification time, heparin tolerance, prothrombin index, protein, AT, procedure type (P=0.000-0.031). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and N0-12 (rank=1), thrombocytes/CC (rank=2), segmented neutrophils/CC (3), eosinophils/CC (4), erythrocytes/CC (5), healthy cells/CC (6), lymphocytes/CC (7), stick neutrophils/CC (8), leucocytes/CC (9), monocytes/CC (10). Correct prediction of 5YS was 100% by neural networks computing (error=0.000; area under ROC curve=1.0).
TEST BANK For Community Health Nursing A Canadian Perspective, 5th Edition by...Donc Test
TEST BANK For Community Health Nursing A Canadian Perspective, 5th Edition by Stamler, Verified Chapters 1 - 33, Complete Newest Version Community Health Nursing A Canadian Perspective, 5th Edition by Stamler, Verified Chapters 1 - 33, Complete Newest Version Community Health Nursing A Canadian Perspective, 5th Edition by Stamler Community Health Nursing A Canadian Perspective, 5th Edition TEST BANK by Stamler Test Bank For Community Health Nursing A Canadian Perspective, 5th Edition Pdf Chapters Download Test Bank For Community Health Nursing A Canadian Perspective, 5th Edition Pdf Download Stuvia Test Bank For Community Health Nursing A Canadian Perspective, 5th Edition Study Guide Test Bank For Community Health Nursing A Canadian Perspective, 5th Edition Ebook Download Stuvia Test Bank For Community Health Nursing A Canadian Perspective, 5th Edition Questions and Answers Quizlet Test Bank For Community Health Nursing A Canadian Perspective, 5th Edition Studocu Test Bank For Community Health Nursing A Canadian Perspective, 5th Edition Quizlet Test Bank For Community Health Nursing A Canadian Perspective, 5th Edition Stuvia Community Health Nursing A Canadian Perspective, 5th Edition Pdf Chapters Download Community Health Nursing A Canadian Perspective, 5th Edition Pdf Download Course Hero Community Health Nursing A Canadian Perspective, 5th Edition Answers Quizlet Community Health Nursing A Canadian Perspective, 5th Edition Ebook Download Course hero Community Health Nursing A Canadian Perspective, 5th Edition Questions and Answers Community Health Nursing A Canadian Perspective, 5th Edition Studocu Community Health Nursing A Canadian Perspective, 5th Edition Quizlet Community Health Nursing A Canadian Perspective, 5th Edition Stuvia Community Health Nursing A Canadian Perspective, 5th Edition Test Bank Pdf Chapters Download Community Health Nursing A Canadian Perspective, 5th Edition Test Bank Pdf Download Stuvia Community Health Nursing A Canadian Perspective, 5th Edition Test Bank Study Guide Questions and Answers Community Health Nursing A Canadian Perspective, 5th Edition Test Bank Ebook Download Stuvia Community Health Nursing A Canadian Perspective, 5th Edition Test Bank Questions Quizlet Community Health Nursing A Canadian Perspective, 5th Edition Test Bank Studocu Community Health Nursing A Canadian Perspective, 5th Edition Test Bank Quizlet Community Health Nursing A Canadian Perspective, 5th Edition Test Bank Stuvia
These lecture slides, by Dr Sidra Arshad, offer a quick overview of the physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar lead (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
6. Describe the flow of current around the heart during the cardiac cycle
7. Discuss the placement and polarity of the leads of electrocardiograph
8. Describe the normal electrocardiograms recorded from the limb leads and explain the physiological basis of the different records that are obtained
9. Define mean electrical vector (axis) of the heart and give the normal range
10. Define the mean QRS vector
11. Describe the axes of leads (hexagonal reference system)
12. Comprehend the vectorial analysis of the normal ECG
13. Determine the mean electrical axis of the ventricular QRS and appreciate the mean axis deviation
14. Explain the concepts of current of injury, J point, and their significance
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. Chapter 3, Cardiology Explained, https://www.ncbi.nlm.nih.gov/books/NBK2214/
7. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
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Muktapishti is a traditional Ayurvedic preparation made from Shoditha Mukta (Purified Pearl), is believed to help regulate thyroid function and reduce symptoms of hyperthyroidism due to its cooling and balancing properties. Clinical evidence on its efficacy remains limited, necessitating further research to validate its therapeutic benefits.
Rasamanikya is a excellent preparation in the field of Rasashastra, it is used in various Kushtha Roga, Shwasa, Vicharchika, Bhagandara, Vatarakta, and Phiranga Roga. In this article Preparation& Comparative analytical profile for both Formulationon i.e Rasamanikya prepared by Kushmanda swarasa & Churnodhaka Shodita Haratala. The study aims to provide insights into the comparative efficacy and analytical aspects of these formulations for enhanced therapeutic outcomes.
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NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
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cartilage graft and healing.pptx
1. CARTILAGE HEALING AND GRAFT
DR. SURBHI ABROL (MCH RESIDENT)
DEPARTMENT OF PLASTIC AND RECONSTRUCTIVE SURGERY.
CHENGALPATTU GOVERNMENT MEDICAL COLLEGE AND HOSPITAL.
2. INTRODUCTION
KIND OF CONNECTIVE TISSUE
Derived from mesoderm
Biphasic material
COMPOSED OF CHONDROCYTES & EXTRACELLULAR MATRICES
DIVIDED INTO 3 TYPES:
1.Hyaline cartilage
2.Fibrocartilage
3.Elastic cartilage
3. CARTILAGE UNIQUE POINTS
Unique tissue with low metabolic rate
Glycolytic activity and oxygen consumption of cartilage approaches anaerobic condition and tissue nourished by
tissue fluid diffusion.
Thus it is relatively more easy to survive.
Perichondrium possesses the ability to regenerate cartilage.
4. Hyaline cartilage is the most common type of
cartilage.
Found in costal, articular, tracheal, and nasal
cartilage.
Covered with perichondrium except articular
cartilage.
Rich in glycosaminoglycans and collagen-2
Characterized by its stiffness, that permits
sustained compressional loading.
HYALINE CARTILAGE
5. FIBROCARTILAGE
Bundles of thick collagen fibres along with intervening unicellular islands of cartilage.
High tensile strength and supporting function so present in meniscus, intervertebral discs,sympyseal joints,joint
portion of bone and tendons/ligaments.
Contains collagen-1, and little glycosaminoglycans.
6. ELASTIC CARTILAGE
Abundant elastic fibres
Found in outer ear structure,larynx,epiglottis.
Surrounded with Perichondrium.
8. PERICHONDRIUM
Dense irregular connective tissue
2 separate layers- Outer fibrous layer and Inner chondrogenic layer.
Collagen fibres and fibroblast constitute the fibrous layer
Chondrogenic layer partially undifferentiated contain mesenchymal stem cells and chondrogenic progenitor cells.
Inner zone is usually absent in adult tissues.
9.
10. CARTILAGE INJURY
Injury or lesions to ear or nasal cartilage can stimulate the Perichondrium to proliferate.
Accompanying vessels can facilitate scar formation.
Cartilage healing in articulating joints is critical to long term function.
Partial lesions- isolated from repair by having no direct source for cellular invasion or blood supply.
Thus current strategy is to cause microfracture or drilling to the subchondral bone to permit blood and cell
invasion.
11. HEALING
SILVERMAN performed experiments to analyse interaction between the engineered cartilage and native cartilage
in vivo.
Neocartilage was found to fill all irregularaties along the cartilage disk surface without any gaps.
Demonstrated that tissues engineered cartilage produced by use of a fibrin –based polymer permitted adherence to
adjacent cartilage and withstand forces significantly.
12. Seeding density of cells capable of chondrogenesis in or onto a polymer carrier is a critical ingredient for
successful engineering.
Avoiding chondrocytes growth in low density monolayer culture.
Use of other mesenchymal cells with chondrogenic potential may permit generation of cartilage.
14. AURICULAR CARTILAGE GRAFTS
Ideal graft for transplantation.
Versatile
Harvested easily under local and significant concha can be removed.
Conchal cartilage can be used as a
A. single layered graft for nasal ,tarsal, and nipple reconstruction.
B. Composite chondrocutaneous graft for nasal reconstruction.
22. NASAL CARTILAGE GRAFT
Composite chondromucosal graft for eyelid reconstruction.
Septal cartilage important source.
Dorsal augmentation, tracheal repair, extended septal graft for
Controlling the projection shape of nose tip.
23. pedicled nasal chondromucosal flap for
upper eyelid reconstruction. (A)
Preoperative markings for harvest of the
upper lateral cartilage in the nasal
chondromucosal flap, which is based on
the lateral terminal branch of the dorsal
nasal artery. (B) After skin incision and
undermining, the flap is raised after a
portion of the upper lateral cartilage
(ULC) is harvested. NB, nasal bone;
LLC, lower lateral cartilage; SC, septal
cartilage.
24. RIB CARTILAGE GRAFT
Costal cartilage may serve as the best donor site for cartilage graft in terms of available tissue amount and
mechanical strength.
The autologous rib cartilage can be virtually contoured into any desired shape and it can retain form and bulk after
implantation if basic surgical principles are followed.
Often used as a cartilage framework for total ear reconstruction.
25. TECHNIQUES
Tanzer, Thomson et al. and Brent have respectively described the technique to harvest costal cartilage to construct
auricular framework.
In the procedure, the synchondrosis of the sixth and seventh cartilages as well as the eighth costal cartilage is
harvested, usually along with the perichondrium.
Nagata’s method for total auricular reconstruction requires the harvest of four costal cartilages in the first-stage
operation and one or two costal cartilages for the second-stage operation
26.
27. COMPLICATIONS
Harvest of costal cartilage can be associated with donor site morbidity.
Pain and clicking of the chest wall, which usually peaked in the first week post surgery and diminished over 3
months.
Most challenging problems are: Pneumothorax (particularly true for nagata’s)
28. MODIFICATION
Kawanabe and Nagata –
1.The costal cartilages were harvested en bloc with
the perichondrium left completely intact at the
donor site.
2.After the fabrication of the auricular cartilage
frame, the remaining costal cartilage was cut into
small blocks that acted as spacers to fill the dead
space formed in the perichondrial pocket.
3.The retained perichondrium not only helps to
avoid the injury of pleura, but may also promote
cartilage regeneration because of the presence of
chondrogenic stem cells.
29.
30. AUTOLOGOUS PERICHONDRIAL GRAFT
FIRST DESCRIBED BY LESTER
Thinness and malleability,
Perichondrium is particularly suitable for covering every part of the cartilaginous graft,
Easy to fold into various layers if greater thickness is required in filling certain areas
Mainly used in reconstruction of degenerated knee joint cartilages.
Nasal reconstruction.
31. Reconstruction of the nasal tip with lateral
crural and shield grafts (Sheen-type)
harvested from the cartilage of the
auricular concha. (B) Graft of the
perichondrium stretched over and secured
to cartilaginous grafts to make the contours
smooth and disguise tip grafts. (C) Lateral
view of the same graft. (D) Schematic
illustration of the perichondrium graft
positioning and fixation.
32. TISSUE ENGINEERING OF CARTILAGE
Combination of cells with a biocompatible polymer resulting in the formation of functional tissue units.
Providing quality cartilage graft tissue - new cartilage to meet the requirements for the repair.
Material properties of synthetic or natural compounds can be manipulated to allow delivery of an aggregate of
dissociated cells into a host that will result in formation of new tissue.
Consideration of properties of the tissue native to the site and properties of polymer being used to generate or
regenerate the cartilage repair tissue.
Used in Auricular reconstruction, Rhinoplasty and facial contouring and joints – TMJ and digital joints.
33.
34.
35.
36. Chondrocytes seeded on to the polymer ear mold in
vitro. (A) seeded with chondrocytes (1.5 × 10°).
(B) adherence of chondrocytes to polyglycolic acid
device before implantation.
37. Gross mechanical testing of the
ear-shaped framework at 12
weeks after insertion
demonstrates a continued high
degree of flexibility. (C) After
mechanical testing, the
framework easily recovers its
initial shape. (D) Hematoxylin
and eosin staining of flexible
tissue-engineered, demonstrating
the tight adherence at the
interface between neocartilage
and the lyophilized swine
perichondrium laminate.
39. NATURAL SCAFFOLDS
A. COLLAGEN- Type-1 collagen from bovine tendon.
Porosoity, biodegradability, biocompatibility.
Either single collagen or composite of 2 or more types.
Disadvantages- foreign body reaction.
B. HYALURONAN- undifferentiated mesenchyme in developing embryo.
Allows synthesis of matrix components and differentiation of progenitor cells.
C. Hydrogels- fibrin glue and alginate.- delivery vehicle for isolated chondrocytes.
40. SYNTHETIC SCAFFOLDS
1.Specimens of cartilage engineered
into specific shapes determined by
the design of the polyglycolic acid
polymer scaffold.
2.Cartilage engineered in
predetermined shapes employing
cell transplantation on synthetic
biodegradable polymers.
41. INERT NON-RESORBABLE MATERIALS
Expanded polytetraflouropolyethylene - biocompatible material that has been used successfully in a multitude of
biomedical and clinical applications.
Microporous structure that allows biointegration for soft tissue fixation as well as overall mechanical integrity.
ePTFE membrane is firm enough to sustain the tension placed on the surface of the engineered
the chondrocytes permeated the micropores of ePTFE membrane and produced neocartilaginous matrix, forming a
tight bond between ePTFE.
42. This integration of cartilage and ePTFE membrane formed a flexible cartilage framework with a
pseudoperichondrium.
When the polymer is placed on both surfaces of the composite, the ePTFE membrane can maintain the flexibility
of tissue-engineered cartilage.
A pseudoperichondrial layer similar in structure and position to the native perichondrium could provide the
necessary flexibility for making suitable tissue-engineered cartilage for craniofacial repair.
43. FUTURE
Stem cell based cartilage engineering
In vitro engineering of cartilage with enhanced mechanical strength.