This document provides an overview of anterior composite restorations. It discusses the indications, contraindications, advantages, and disadvantages of composite resins. It also describes the different types of composites and their composition. The document outlines techniques for cavity preparations for Class III, IV, and V lesions and the steps for placing composite restorations, including acid etching, bonding, matrix placement, increment placement, and finishing/polishing. Composite resins are presented as esthetic restorative materials that conserve tooth structure when used for anterior restorations according to the guidelines provided.
Mastering Composite Artistry to Create Anterior Masterpieces: Step-by-Step Approaches for Anterior Direct Restorative Challenges, with Newton Fahl, Jr., DDS
The second phase of a root canal treatment.
This presentation covers the most basic techniques of root canal shaping.
provides the reader with a concise overview of the big picture.
This document discusses provisional restorations, including their definition, purpose, requirements, and fabrication methods. Provisional restorations are interim prostheses used for a limited time after tooth preparation until a permanent restoration can be placed. They protect the prepared tooth, maintain function and aesthetics, and allow the dentist to assess treatment. Ideal provisionals have biologic requirements like pulp protection and positional stability, mechanical requirements like strength and retention, and aesthetic requirements like color matching. They can be custom-made using various resin or metal materials or prefabricated. Direct, indirect, and combined fabrication techniques are described.
The document outlines the steps for performing a composite resin restoration:
1) Isolate the operating area using a rubber dam to protect the restoration from contamination.
2) Etch the enamel surface with phosphoric acid for 15-30 seconds and condition the dentin.
3) Wash and dry the etched surfaces before applying the bonding agent.
4) Apply the bonding agent and cure it to bond the composite to the tooth.
The document discusses various techniques for cleaning and shaping the root canal system during endodontic treatment. It describes the objectives and basic principles of root canal preparation, including removing debris and maintaining the original shape of the canal. Several techniques are summarized, such as step-back, crown-down, balanced force, and ultrasonic instrumentation. For each technique, the document outlines the steps and discusses advantages and disadvantages.
This document discusses Necrotizing Ulcerative Gingivitis (NUG), also known as trench mouth. It defines NUG as a microbial disease of the gingiva caused by an impaired host response. Key clinical features include necrosis of gingival tissue and pain. Diagnosis is based on these clinical findings and microscopic examination. Management involves reducing the microbial load, removing necrotic tissue, treating any systemic conditions, and supportive periodontal therapy. Prognosis is generally good with treatment but recurrence is possible without ongoing maintenance of oral hygiene.
The document discusses the history and development of porcelain jacket crowns (PJCs). The first all-ceramic crown was developed by Land in 1886 and was called a PJC. Originally made of feldspathic porcelain, PJCs are now made of advanced ceramics like aluminum oxide and zirconium. PJCs offer esthetic benefits but require more tooth reduction than metal crowns. They are best for anterior teeth but have limitations for posterior teeth or situations without adequate tooth structure.
Mastering Composite Artistry to Create Anterior Masterpieces: Step-by-Step Approaches for Anterior Direct Restorative Challenges, with Newton Fahl, Jr., DDS
The second phase of a root canal treatment.
This presentation covers the most basic techniques of root canal shaping.
provides the reader with a concise overview of the big picture.
This document discusses provisional restorations, including their definition, purpose, requirements, and fabrication methods. Provisional restorations are interim prostheses used for a limited time after tooth preparation until a permanent restoration can be placed. They protect the prepared tooth, maintain function and aesthetics, and allow the dentist to assess treatment. Ideal provisionals have biologic requirements like pulp protection and positional stability, mechanical requirements like strength and retention, and aesthetic requirements like color matching. They can be custom-made using various resin or metal materials or prefabricated. Direct, indirect, and combined fabrication techniques are described.
The document outlines the steps for performing a composite resin restoration:
1) Isolate the operating area using a rubber dam to protect the restoration from contamination.
2) Etch the enamel surface with phosphoric acid for 15-30 seconds and condition the dentin.
3) Wash and dry the etched surfaces before applying the bonding agent.
4) Apply the bonding agent and cure it to bond the composite to the tooth.
The document discusses various techniques for cleaning and shaping the root canal system during endodontic treatment. It describes the objectives and basic principles of root canal preparation, including removing debris and maintaining the original shape of the canal. Several techniques are summarized, such as step-back, crown-down, balanced force, and ultrasonic instrumentation. For each technique, the document outlines the steps and discusses advantages and disadvantages.
This document discusses Necrotizing Ulcerative Gingivitis (NUG), also known as trench mouth. It defines NUG as a microbial disease of the gingiva caused by an impaired host response. Key clinical features include necrosis of gingival tissue and pain. Diagnosis is based on these clinical findings and microscopic examination. Management involves reducing the microbial load, removing necrotic tissue, treating any systemic conditions, and supportive periodontal therapy. Prognosis is generally good with treatment but recurrence is possible without ongoing maintenance of oral hygiene.
The document discusses the history and development of porcelain jacket crowns (PJCs). The first all-ceramic crown was developed by Land in 1886 and was called a PJC. Originally made of feldspathic porcelain, PJCs are now made of advanced ceramics like aluminum oxide and zirconium. PJCs offer esthetic benefits but require more tooth reduction than metal crowns. They are best for anterior teeth but have limitations for posterior teeth or situations without adequate tooth structure.
The document discusses the progression of dental adhesive systems through 8 generations. The 8th generation features improvements like being a single-step system and using nano-sized fillers of 12nm in the bonding agent. This increases bonding strength and penetration compared to previous generations. The 8th generation also offers benefits like longer shelf life and stress absorption. It provides bond strengths comparable to total etching agents without the associated sensitivity.
This document provides information on intracanal medicaments used in endodontic treatment. It defines intracanal medicaments as temporary medications placed in root canals to inhibit bacterial invasion and discusses their ideal requirements. Various commonly used medicaments are described, including their composition, mechanisms of action, and antimicrobial efficacy. In particular, it focuses on chlorhexidine, formocresol, calcium hydroxide, antibiotics, and corticosteroid combinations such as Ledermix paste. The document also reviews the root canal and deciduous tooth microflora that intracanal medicaments aim to eliminate.
This document summarizes different techniques for pulp capping including direct and indirect pulp capping. It discusses the history of various materials used for pulp capping such as calcium hydroxide and mineral trioxide aggregate. Key points covered include the indications and contraindications for pulp capping, the ideal properties of capping materials, and the histological response after pulp capping including zone formation. The document provides an overview of pulp capping procedures and factors influencing their success.
This document provides an overview of composite resins, including their composition, classification, performance factors, and clinical applications and considerations. It discusses the organic resin matrix and inorganic filler particles that make up composite, how they are classified based on filler size and type, and factors that influence their performance such as polymerization shrinkage and wear resistance. The document reviews the history of composites and their development over time. It also outlines the indications and contraindications for composite use as well as the advantages and disadvantages.
1. Classification of jaw relations establishes orientation, vertical, and horizontal relations between the jaws. Orientation defines cranial references, vertical defines jaw separation, and horizontal defines front-back and side-to-side jaw positions.
2. Centric relation is a repeatable reference position important for recording jaw relations and developing occlusion. It is the starting point for mandibular movements and where opposing teeth contact without proprioceptive guidance.
3. Methods for recording centric relation include interocclusal records, graphic tracings, and functional methods to position the mandible at the correct vertical dimension. The record must be made with equal pressure and avoid distortion until casts are mounted.
Deep carious lesions penetrate deep into the dentin and can potentially expose the pulp, causing pulpitis if left untreated. There are five zones of carious dentin, ranging from normal dentin to infected dentin teeming with bacteria. Pulpitis can be reversible or irreversible, depending on the severity of inflammation. For deep lesions near the pulp, indirect pulp capping involves removing infected dentin while leaving behind affected dentin to avoid exposure. For direct exposures, pulp capping places a biocompatible material over the exposure site to promote healing and maintain vitality. Factors like remaining dentin thickness, exposure size, and patient age influence the success of pulp capping procedures.
The document discusses the smear layer, which forms when tooth structure is cut. It is defined as debris produced when cutting enamel, dentin, cementum, or root canal walls. The smear layer consists of both organic and inorganic components from the tooth. It was first observed in the 1960s using electron microscopy. While some argue the smear layer protects by blocking dentinal tubules, others contend it should be removed since it can harbor bacteria. The morphology and topographical details of cut dentin and the smear layer are also described based on scanning electron microscope images.
Teeth don’t possess regenerative ability found in most other tissues. Therefore, once enamel & dentin are lost as a result of caries, trauma or wear, restorative material must be used, to reestablish form & function.
Teeth require preparation to receive restoration & these preparations must be based on fundamental principles, which are discussed in this presentation, from which basic criteria can be developed to help predict the success of prosthodontic treatment.
This document provides an overview of endodontics. It defines endodontics as the branch of dentistry concerned with the morphology, physiology, and pathology of the dental pulp and periradicular tissues. The scope of endodontics includes treating diseases of the pulp, such as pulpal inflammation and infection, through both nonsurgical and surgical root canal treatment and periradicular surgery. Pathogenesis is discussed, noting that while physical and chemical factors can induce inflammation, microbial infection is essential for progression of pulpal and periradicular disease. Routes of canal infection and the focal infection theory are also summarized.
An inlay may cap none, or may cap all but one cusp.
Sturdevant’s 4th ed. page579
Inlays may be used as single-tooth restorations for proximo-occlusal or gingival lesions with minimal to moderate extensions
Shillingburg page 1
An inlay may be defined as a restoration which has been constructed out of mouth from gold, porcelain, or other material & then cemented into the prepared cavity of a tooth.
William McGehee pg410
The document discusses the clinical technique for composite restoration. It covers initial procedures like local anesthesia and shade selection. It then discusses tooth preparation, including cavity designs like conventional, beveled conventional, modified box shape, and facial/lingual slot. Matrix placement and isolation of the operating site are also covered. Pulp protection and restorative techniques are briefly mentioned.
This document discusses cavity preparation in primary teeth. It covers the basic principles, which involve opening the cavity with a high-speed bur and then eliminating caries from all walls. It describes cavity preparations for different tooth surfaces and classes of cavities. For class I cavities, it recommends rounding internal line angles and converging side walls. For class II cavities, it suggests dovetail-shaped occlusal steps and convergence of proximal walls. Stainless steel crowns are indicated for restoring heavily decayed primary molars.
This presentation is all about restoration of endodontically treated teeth, prefabricated post and core, cast post and core, direct and indirect technique.
The document discusses various aspects of pontic design for fixed dental prostheses. It defines a pontic as an artificial tooth that replaces a missing natural tooth. Ideal requirements for pontics include smooth surfaces, easy cleanability, minimal pressure on the ridge, and no irritation to tissues. Factors such as biologic considerations, oral hygiene, occlusion, esthetics, and materials must be considered in pontic design. Common types of pontics include sanitary, modified sanitary, ridge lap, ovate, and others. Proper pretreatment assessment and fabrication techniques help ensure successful pontic design.
Veneers are a conservative treatment to improve the appearance of teeth. They involve bonding thin facings of tooth-colored material to the front of teeth. Veneers can be made of composite resin, porcelain, or other ceramic materials. They are either bonded directly during a single appointment or indirectly with impressions taken and veneers fabricated by a dental laboratory over two appointments. Veneers can repair damage, close gaps, change the shape or length of teeth, or improve discoloration while minimizing the removal of tooth structure. The choice of material and technique depends on the specific needs and preferences of the patient.
Endodontic surgery is a procedure performed to remove or correct causes of dental disease and restore tissues to health. It is often a last resort to save a tooth and requires great skill. Indications include inability to eliminate pathology with root canal treatment, inability to fully clean and fill the root canal, or iatrogenic problems like instrument breakage. Contraindications include resolved pathology, health issues, anatomic constraints, or periodontal disease. Preparation includes referral data, radiographs, diagnosis, and informed consent. Common flap designs are triangular, rectangular, or submarginal. Types of endodontic surgery include incision and drainage, trephination, periapical surgery like apicoectomy, repair of perforations,
The document discusses the history and advantages of using rubber dams in dentistry. It was introduced in 1864 and provides benefits such as isolating teeth, protecting tissues, and improving visibility and access. Recent advances include latex-free materials, frames with improved design for patient comfort and access, and pre-framed dams. A variety of retainers and frames exist to securely isolate teeth from saliva for endodontic procedures.
Non-carious cervical lesions are caused by erosion from dietary or gastric acids, abrasion from toothbrushing or other habits, and abfraction from biomechanical forces. They present as broad shallow lesions on the facial or lingual surfaces for erosion, notched lesions on the facial surface for abrasion, and wedge-shaped lesions often subgingivally for abfraction. Treatment involves dentin desensitization, restorations with composites or glass ionomers, endodontics if pulpal involvement, periodontal therapy for gingival recession, and prevention through dietary counseling, fluoride application, and correcting habits.
The document discusses the progression of dental adhesive systems through 8 generations. The 8th generation features improvements like being a single-step system and using nano-sized fillers of 12nm in the bonding agent. This increases bonding strength and penetration compared to previous generations. The 8th generation also offers benefits like longer shelf life and stress absorption. It provides bond strengths comparable to total etching agents without the associated sensitivity.
This document provides information on intracanal medicaments used in endodontic treatment. It defines intracanal medicaments as temporary medications placed in root canals to inhibit bacterial invasion and discusses their ideal requirements. Various commonly used medicaments are described, including their composition, mechanisms of action, and antimicrobial efficacy. In particular, it focuses on chlorhexidine, formocresol, calcium hydroxide, antibiotics, and corticosteroid combinations such as Ledermix paste. The document also reviews the root canal and deciduous tooth microflora that intracanal medicaments aim to eliminate.
This document summarizes different techniques for pulp capping including direct and indirect pulp capping. It discusses the history of various materials used for pulp capping such as calcium hydroxide and mineral trioxide aggregate. Key points covered include the indications and contraindications for pulp capping, the ideal properties of capping materials, and the histological response after pulp capping including zone formation. The document provides an overview of pulp capping procedures and factors influencing their success.
This document provides an overview of composite resins, including their composition, classification, performance factors, and clinical applications and considerations. It discusses the organic resin matrix and inorganic filler particles that make up composite, how they are classified based on filler size and type, and factors that influence their performance such as polymerization shrinkage and wear resistance. The document reviews the history of composites and their development over time. It also outlines the indications and contraindications for composite use as well as the advantages and disadvantages.
1. Classification of jaw relations establishes orientation, vertical, and horizontal relations between the jaws. Orientation defines cranial references, vertical defines jaw separation, and horizontal defines front-back and side-to-side jaw positions.
2. Centric relation is a repeatable reference position important for recording jaw relations and developing occlusion. It is the starting point for mandibular movements and where opposing teeth contact without proprioceptive guidance.
3. Methods for recording centric relation include interocclusal records, graphic tracings, and functional methods to position the mandible at the correct vertical dimension. The record must be made with equal pressure and avoid distortion until casts are mounted.
Deep carious lesions penetrate deep into the dentin and can potentially expose the pulp, causing pulpitis if left untreated. There are five zones of carious dentin, ranging from normal dentin to infected dentin teeming with bacteria. Pulpitis can be reversible or irreversible, depending on the severity of inflammation. For deep lesions near the pulp, indirect pulp capping involves removing infected dentin while leaving behind affected dentin to avoid exposure. For direct exposures, pulp capping places a biocompatible material over the exposure site to promote healing and maintain vitality. Factors like remaining dentin thickness, exposure size, and patient age influence the success of pulp capping procedures.
The document discusses the smear layer, which forms when tooth structure is cut. It is defined as debris produced when cutting enamel, dentin, cementum, or root canal walls. The smear layer consists of both organic and inorganic components from the tooth. It was first observed in the 1960s using electron microscopy. While some argue the smear layer protects by blocking dentinal tubules, others contend it should be removed since it can harbor bacteria. The morphology and topographical details of cut dentin and the smear layer are also described based on scanning electron microscope images.
Teeth don’t possess regenerative ability found in most other tissues. Therefore, once enamel & dentin are lost as a result of caries, trauma or wear, restorative material must be used, to reestablish form & function.
Teeth require preparation to receive restoration & these preparations must be based on fundamental principles, which are discussed in this presentation, from which basic criteria can be developed to help predict the success of prosthodontic treatment.
This document provides an overview of endodontics. It defines endodontics as the branch of dentistry concerned with the morphology, physiology, and pathology of the dental pulp and periradicular tissues. The scope of endodontics includes treating diseases of the pulp, such as pulpal inflammation and infection, through both nonsurgical and surgical root canal treatment and periradicular surgery. Pathogenesis is discussed, noting that while physical and chemical factors can induce inflammation, microbial infection is essential for progression of pulpal and periradicular disease. Routes of canal infection and the focal infection theory are also summarized.
An inlay may cap none, or may cap all but one cusp.
Sturdevant’s 4th ed. page579
Inlays may be used as single-tooth restorations for proximo-occlusal or gingival lesions with minimal to moderate extensions
Shillingburg page 1
An inlay may be defined as a restoration which has been constructed out of mouth from gold, porcelain, or other material & then cemented into the prepared cavity of a tooth.
William McGehee pg410
The document discusses the clinical technique for composite restoration. It covers initial procedures like local anesthesia and shade selection. It then discusses tooth preparation, including cavity designs like conventional, beveled conventional, modified box shape, and facial/lingual slot. Matrix placement and isolation of the operating site are also covered. Pulp protection and restorative techniques are briefly mentioned.
This document discusses cavity preparation in primary teeth. It covers the basic principles, which involve opening the cavity with a high-speed bur and then eliminating caries from all walls. It describes cavity preparations for different tooth surfaces and classes of cavities. For class I cavities, it recommends rounding internal line angles and converging side walls. For class II cavities, it suggests dovetail-shaped occlusal steps and convergence of proximal walls. Stainless steel crowns are indicated for restoring heavily decayed primary molars.
This presentation is all about restoration of endodontically treated teeth, prefabricated post and core, cast post and core, direct and indirect technique.
The document discusses various aspects of pontic design for fixed dental prostheses. It defines a pontic as an artificial tooth that replaces a missing natural tooth. Ideal requirements for pontics include smooth surfaces, easy cleanability, minimal pressure on the ridge, and no irritation to tissues. Factors such as biologic considerations, oral hygiene, occlusion, esthetics, and materials must be considered in pontic design. Common types of pontics include sanitary, modified sanitary, ridge lap, ovate, and others. Proper pretreatment assessment and fabrication techniques help ensure successful pontic design.
Veneers are a conservative treatment to improve the appearance of teeth. They involve bonding thin facings of tooth-colored material to the front of teeth. Veneers can be made of composite resin, porcelain, or other ceramic materials. They are either bonded directly during a single appointment or indirectly with impressions taken and veneers fabricated by a dental laboratory over two appointments. Veneers can repair damage, close gaps, change the shape or length of teeth, or improve discoloration while minimizing the removal of tooth structure. The choice of material and technique depends on the specific needs and preferences of the patient.
Endodontic surgery is a procedure performed to remove or correct causes of dental disease and restore tissues to health. It is often a last resort to save a tooth and requires great skill. Indications include inability to eliminate pathology with root canal treatment, inability to fully clean and fill the root canal, or iatrogenic problems like instrument breakage. Contraindications include resolved pathology, health issues, anatomic constraints, or periodontal disease. Preparation includes referral data, radiographs, diagnosis, and informed consent. Common flap designs are triangular, rectangular, or submarginal. Types of endodontic surgery include incision and drainage, trephination, periapical surgery like apicoectomy, repair of perforations,
The document discusses the history and advantages of using rubber dams in dentistry. It was introduced in 1864 and provides benefits such as isolating teeth, protecting tissues, and improving visibility and access. Recent advances include latex-free materials, frames with improved design for patient comfort and access, and pre-framed dams. A variety of retainers and frames exist to securely isolate teeth from saliva for endodontic procedures.
Non-carious cervical lesions are caused by erosion from dietary or gastric acids, abrasion from toothbrushing or other habits, and abfraction from biomechanical forces. They present as broad shallow lesions on the facial or lingual surfaces for erosion, notched lesions on the facial surface for abrasion, and wedge-shaped lesions often subgingivally for abfraction. Treatment involves dentin desensitization, restorations with composites or glass ionomers, endodontics if pulpal involvement, periodontal therapy for gingival recession, and prevention through dietary counseling, fluoride application, and correcting habits.
Resin composites are used to replace missing tooth structure and modify tooth color. They consist of resin matrix, filler particles, and coupling agents. Composites are classified based on filler size and amount, curing method, and fabrication technique. They have properties like thermal expansion similar to enamel, radiopacity from fillers, and bond to tooth structure. Composites are indicated for fillings, veneers, and splinting but require proper technique due to polymerization shrinkage. Advances include ceromers, smart composites, and nanocomposites to better mimic natural teeth.
This document discusses preventive resin restoration (PRR) for treating dental caries. PRR involves sealing carious and caries-susceptible pit and fissure areas on teeth with resin. There are three types of PRR (A, B, C) based on the extent and depth of the carious lesions. Type A involves sealing suspicious fissures with resin after removing enamel caries. Type B treats incipient dentin lesions by removing caries, etching, applying bonding agent and filled resin. Type C is for larger, deeper lesions and requires additional polymerization time. PRR provides advantages over fillings by preserving more tooth structure and being less invasive if later replaced, while also sealing caries
This document provides an overview of composite resin materials used in dental restorations. It defines composite resin as a compound of two or more materials with superior properties to the individual components. Composite resins are classified based on filler size, percentage, resin type, viscosity, and curing method. The document outlines the composition of composite resins including resin matrix, filler particles, coupling agents, and initiators. It discusses advantages like esthetics and disadvantages like polymerization shrinkage. Properties like coefficient of thermal expansion, wear resistance, water absorption, and mechanical properties are also covered.
The document provides an overview of esthetics with veneers. It discusses the definitions, history, indications and contraindications of veneers. It describes the processes of shade selection, tooth preparation including principles, rationale and types of preparation. It also discusses provisional restorations, cementation, maintenance and failures of veneers. Recent advancements discussed include feldspathic, lithium disilicate and minimally invasive veneers. In conclusion, veneers are a conservative treatment for improving aesthetics when done according to principles of preparation, cementation and maintenance.
The presentation depicts in a very simplified manner the steps of cavity preparation and restoration of class 3 and class 5 composite restoration. It is well supported with illustrations that further provide a better understanding of the topic.
This document provides an overview of dental composites, including their chemistry, materials, filler types, bonding agents, curing methods, classifications, and clinical applications and techniques. Key points include:
- Dental composites consist of a resin matrix and filler materials, along with coupling agents to bond resin to fillers. They are polymerized through heat, chemical, or photochemical initiation.
- Fillers improve physical properties but characteristics depend on filler type, size, shape, and load. Larger and smaller filler particles reduce shrinkage.
- Bonding agents like silanes chemically coat fillers to improve strength, but can degrade with moisture.
- Composites are classified by initiation method
PPSX Esthetic Biomaterials and Principles of Clinical steps.ppsxInstrumentSeparation
This document provides an overview of esthetic biomaterials and principles for clinical steps in restorative dentistry. It lists materials used, cavity preparation techniques, and factors affecting polymerization. It then discusses direct resin composites indications and contraindications, basic instruments used, clinical procedures for class III, IV and V cavities. These include preparation details, matrix and wedge use, adhesive placement, composite insertion and curing techniques. Finishing and polishing of restorations is also covered. The document concludes by mentioning pre-heating of composite to lower viscosity for improved adaptation.
This document discusses the use of composite materials for restoring posterior teeth. It provides indications for using composites such as small-moderate lesions in premolars/first molars where esthetics is important. Contraindications include an inability to control moisture or large lesions. Advantages are good esthetics, conservation of tooth structure, and bonding benefits, while disadvantages include polymerization shrinkage and being more technique sensitive than amalgam. Strategies to reduce shrinkage like incremental layering and stress-absorbing layers are described. The protocol for posterior reconstruction with composites is also outlined.
This document discusses indirect composite restorations such as inlays and onlays. It begins by defining these terms and discussing indications, contraindications, and materials used. It then covers different classification systems for indirect composites based on fabrication method, curing method, and generation. Various commercial composite systems are described. The document discusses advantages like improved physical properties over direct composites, as well as disadvantages like increased time and cost. Fabrication techniques include direct, semidirect, and indirect methods. Steps for cavity preparation and cementation of indirect composites are outlined.
Provisional restorations in crowns and bridgesDR PAAVANA
Provisional restorations are temporary restorations used during dental treatment before final restorations are placed. They provide protection, stabilization, and function during treatment. Provisional restorations can be prefabricated or custom-made and are made from materials like polycarbonate, acrylic resin, or bis-acryl composites. They are fabricated using direct or indirect techniques and help evaluate treatment plans before permanent restorations are made.
Dental composite /certified fixed orthodontic courses by Indian dental academy Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
this presentation includes details about composite resins which are tooth colored filling materials used in dentistry. it also includes various recent advances in this field.
This document discusses resin-based composite materials used in dentistry. It defines resin and composite materials and outlines ideal properties for dental filling materials. The document then summarizes the evolution of composite resin materials from silicate cements in 1871 to modern nanofilled and nanohybrid composites. It also classifies carious lesions and restorations. The document discusses the uses, advantages, disadvantages, and types of composite resins, including classifications based on curing mechanism, viscosity, and applications.
This document discusses various restorative materials used in pediatric dentistry, including their properties and uses. It covers silver amalgam, glass ionomer cement (GIC), and modifications to GIC, including resin-modified GIC and metal-modified GIC. Silver amalgam has good strength but is not esthetic, while GIC bonds to tooth structure, releases fluoride, and has improved esthetics over amalgam but less strength. Modifications to GIC aim to improve its physical properties for use in stress-bearing areas. Factors like strength, esthetics, cariostatic effects, and indications and contraindications are considered when selecting a restorative material.
1) Remaining dentin thickness is important for pulpal health, with thinner dentin having a greater effect from toxic substances.
2) The pulp can become inflamed from physical, mechanical, chemical, or biologic stimuli like bacteria from caries.
3) Even early enamel caries lesions can induce a slight pulpal reaction and the pulp responds through reparative, reactionary, or sclerotic dentin formation.
4) Cavity sealants, liners, and bases provide protection, sealing and insulation for the pulp during restorative procedures.
Basavarajeeyam is a Sreshta Sangraha grantha (Compiled book ), written by Neelkanta kotturu Basavaraja Virachita. It contains 25 Prakaranas, First 24 Chapters related to Rogas& 25th to Rasadravyas.
Promoting Wellbeing - Applied Social Psychology - Psychology SuperNotesPsychoTech Services
A proprietary approach developed by bringing together the best of learning theories from Psychology, design principles from the world of visualization, and pedagogical methods from over a decade of training experience, that enables you to: Learn better, faster!
Does Over-Masturbation Contribute to Chronic Prostatitis.pptxwalterHu5
In some case, your chronic prostatitis may be related to over-masturbation. Generally, natural medicine Diuretic and Anti-inflammatory Pill can help mee get a cure.
Histololgy of Female Reproductive System.pptxAyeshaZaid1
Dive into an in-depth exploration of the histological structure of female reproductive system with this comprehensive lecture. Presented by Dr. Ayesha Irfan, Assistant Professor of Anatomy, this presentation covers the Gross anatomy and functional histology of the female reproductive organs. Ideal for students, educators, and anyone interested in medical science, this lecture provides clear explanations, detailed diagrams, and valuable insights into female reproductive system. Enhance your knowledge and understanding of this essential aspect of human biology.
Clinic ^%[+27633867063*Abortion Pills For Sale In Tembisa Central19various
Clinic ^%[+27633867063*Abortion Pills For Sale In Tembisa Central Clinic ^%[+27633867063*Abortion Pills For Sale In Tembisa CentralClinic ^%[+27633867063*Abortion Pills For Sale In Tembisa CentralClinic ^%[+27633867063*Abortion Pills For Sale In Tembisa CentralClinic ^%[+27633867063*Abortion Pills For Sale In Tembisa Central
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.
8 Surprising Reasons To Meditate 40 Minutes A Day That Can Change Your Life.pptxHolistified Wellness
We’re talking about Vedic Meditation, a form of meditation that has been around for at least 5,000 years. Back then, the people who lived in the Indus Valley, now known as India and Pakistan, practised meditation as a fundamental part of daily life. This knowledge that has given us yoga and Ayurveda, was known as Veda, hence the name Vedic. And though there are some written records, the practice has been passed down verbally from generation to generation.
Here is the updated list of Top Best Ayurvedic medicine for Gas and Indigestion and those are Gas-O-Go Syp for Dyspepsia | Lavizyme Syrup for Acidity | Yumzyme Hepatoprotective Capsules etc
2. CONTENTS
• INTRODUCTION TO COMPOSITES
• INDICATIONS.
• CONTRAINDICAIONS.
• ADVANTAGES.
• DISADVANTAGES.
• CLINICAL TECHNIQUES FOR COMPOSITE
RESTORATIONS.
• ANTERIOR COMPOSITE RESIN RESTORATIONS:
o CLASS III CAVITY PREPARATION FOR COMPOSITE
RESINS.
3. o CLASS IV CAVITY PREPARATION FOR COMPOSITE
RESINS.
o CLASS V CAVITY PREPARATION FOR COMPOSITE
RESINS.
• RESTORATIVE TECHNIQUES.
• CONCLUSIONS.
4. INTRODUCTION TO COMPOSITES
• DEFINITION:
It is solid formed from two or more distinct phases that
have been combined to produce properties superior to or
intermediate to those of the individual components.
5. CLASSIFICATION OF DENTAL COMPOSITES
1)Based on filler particle type
a) Homogeneous composites
• Macrofill- Macro fillers in the range of 10-100um.
• Midifill- Midfillers from 1-10um
• Minifill – Minifillers from 0.1-1um
• Microfill –Microfillers from 0.01-0.1
• Nanofill- Nanofillers from 0.001-0.01um
• Megafill- Very large individual fillers particles, called megafillers.
b) Heterogeneous composites
• Hetero-Midfill
• Hetero-Minifill
• Hetero-Microfill
c) Hybrid composites
• Midi-Micro Hybrid
• Mini-Micro hybrid
• Mini-Nano Hybrid
6. 2) Based on matrix composition
• BIS-GMA based composites.
• UDMA based composites
3) Based on polymerization method
• Light cured composites
• Chemical cure composites
• Dual cure composites
4) Based on viscosity
• Packable composites
• Flowable composites
7. COMPOSITION OF COMPOSITE RESINS
THE BASIC COMPONENTS OF COMPOSITE RESINS INCLUDE
THE FOLLOWING:
• RESIN MATRIX.
• FILLERS.
• COUPLING AGENTS.
• ACTIVATOR-INITIATOR SYSTEMS.
• INHIBITORS.
• OPTICAL MODIFIERS/ COLORING AGENTS.
8. RESIN MATRIX
• It is the continuous phase to which the other ingredients
are incorporated.
• Most composite resins contain the following resin
matrices:
o BisGMA (bisphenol A glycidyl methacrylate).
o UDMA (urethane dimethacrylate)
o Combination of bisgma and UDMA.
9. FILLERS
• Fillers in composite resins are usually a type of glass such as quartz, silica,
barium glass etc.
• The types of fillers used include quartz, silica, borosilicate glass, barium,
strontium, zinc, zirconium .
• The filler content in composite resins ranges from 30%-70% or 50%-85% by
weight.
10. COUPLING AGENTS
• The coupling agent binds the filler particles to the resin
matrix and allow more flexible resin matrix to transfer
stresses to the stiffer filler particles.
• Oraganic silanes like gamma-methacryloxy propyl
trimethoxy silane is commonly used.
11. ACTIVATOR-INITIATOR SYSTEMS
• Composite resins polymerize by an addition
polymerization mechanism that is brought about by the
release of free radicals.
Free radicals are released by:
o Chemical activation.
o Light activation:
• UV light.
• Visible light.
12. INHIBITORS
• These are added to prevent spontaneous polymerization of
the monomers by inhibiting the free radical.
• Butylated hydroxy toluene 0.01% is added as inhibitor in
composite resins.
13. OPTIMAL MODIFIERS/COLORING AGENTS
• Metal oxides in minute amounts are added to the
composite resin to produce different shades of composites.
• Aluminium oxides and titanium oxide in small amounts
provide opacity to composite resins.
• Darker shades and greater opacities have a lesser depth of
curing than lighter shades.
15. PROPERTIES OF COMPOSITE RESINS
• Polymerization shrinkage.
• Mechanical properties
• Linear coefficient of thermal expansion.
• Wear
• Water sorption.
• Solubility.
• Marginal integrity.
• Radiopacity.
• Esthetics, color, and color stability.
• Biocompatibility.
16. INDICATIONS
• Class I and class II cavities.
• Class III, class IV and class V cavities.
• Class VI cavities.
• Foundations or core buildups.
• Esthetic enhancement procedures.
• Luting cements.
• Interim restorations.
• Miscellaneous applications.
17. CONTRAINDICATIONS
• High caries incidence and poor oral hygiene.
• Heavy, abnormal occlusal stresses.
• Access and isolation difficulties.
• Subgingival extensions.
• Limited operator skill and knowledge.
18. ADVANTAGES
• Esthetics
• Conserve tooth structure.
• Adhesion.
• Low thermal conductivity.
• Universal application.
• Command set.
• Repairable.
• Can be polished at the same appointment.
19. DISADVANTAGES
• Polymerization shrinkage.
• Technique sensitivity.
• Time-consuming and expensive.
• Difficult to finish and polish.
• Increased coefficient of thermal expansion.
21. SHADE SELECTION
GUIDELINES FOR SHADE SELECTION
• The shade must be selected before drying the teeth because drying
makes the teeth lighter in shade due to loss of translucency.
• Use shade guides for shade selection.
• Use good lighting, either natural or artifical during shade
selection.
• For complex situation use a combination of shades.
• The shade selection should be made quickly within 30sec.
22. GENERAL CONCEPTS FOR CAVITY
PREPARATION FOR COMPOSITES
• Minimal extensions.
• Pulpal and or axial walls of varying depth.
• Enamel bevel.
• Butt joint on root surfaces.
• Tooth preparation walls must be rough.
23. ANTERIOR COMPOSITE RESIN RESTORATIONS
CLASS III CAVITY PREPARATION FOR COMPOSITE RESINS:
CLASS III RESTORATIONS ARE DONE ON PROXIMAL SURFACES
OF ANTERIOR TOOTH WHICH DO NOT INVOLVE THE
INCISAL ANGLES.
24. CLASS III TOOTH PREPARATION
• There is a choice between facial or lingual entry into the tooth.
INDICATIONS FOR LINGUAL APPROACH:
• To conserve facial enamel for enhanced esthetics.
• Carious lesions is positioned lingually.
• Lesion is accessible from the lingual.
25. Indications for facial approach:
• The carious lesion is positioned facially.
• Teeth is irregularly aligned, making lingual access undesirable.
• Extensive caries extent into the facial surfaces.
• Faulty restoration that was originally placed at the facial.
26. CLINICAL STEPS IN A CLASS III CAVITY
PREPARTION:
• INITIAL CLINICAL PROCEDURE.
• TOOTH PREPARATION.
o LINGUAL VS FACIAL APPROACH.
o OUTLINE FORM.
o INITIAL TOOTH PREPARATION.
o FINAL TOOTH PREPARATION.
• RESTORATIVE TECHNIQUE
o MATRIX APPLICATION.
o PLACEMENT OF ADHESIVE.
o INSERTION AND LIGHT ACTIVATION OF THE COMPOSITE.
o CONTOURING AND POLISHING OF THE COMPOSITE.
27. TOOTH PREPARATION
TOOTH PREPARATION FOR CLASS III DIRECT COMPOSITE
RESTORATION INVOLVES:
• Obtaining access to the defect (caries, fracture).
• Removing faulty structures (caries, defective dentin, defective
restoration).
• Creating convenience form for the restoration.
DEPENDING UPON THE EXTENT OF THE PREPARATION TO
BE THE RESTORED, THERE ARE THREE DESIGNS:
• Conventional.
• Beveled conventional.
• Modified.
30. RESTORATIVE TECHNIQUE
• Matrix application.
• Placement of adhesive.
• Insertion and light activation of the composite.
• Contouring and polishing of the composite.
31.
32.
33. CLASS V CAVITY PREPARATIONS FOR COMPOSITE
RESINS:
CLASS V RESTORATIONS ARE DONE ON THE GINGIVAL
THIRD OF FACIAL AND LINGUAL SURFACES OF ALL
TEETH.
34. TOOTH PREPARATION
• After the usual preliminary procedure, the initial tooth preparation is
accomplished with a round diamond bur, eliminating the entire
enamel surface lesions or defect.
• The completed preparation is made with etched enamel and primed
dentin.
36. RESTORATIVE TECHNIQUE
• Acid etching and placement of the adhesive.
• Insertion and light activation of the composite.
• Contouring and polishing of the composite.
37. CLASS IV CAVITY PREPARATION FOR COMPOSITE RESINS:
CLASS IV CAVITY PREPARATIONS ARE DONE ON THE
PROXIMAL SURFACES OF ANTERIOR TOOTH THAT
INCLUDE THE INCISAL ANGLES.
38. TOOTH PREPARATIONS
SMALL DEFECT:
• The treatment of the teeth with minor coronal fracture requires
minimal preparation.
• If the fracture is confined to enamel, adequate retention attained by
beveling the sharp cavosurface margins in the fractured area with a
flamed shaped diamond instrument followed by bonding.
39. LARGE DEFECT:
• Using A round carbide bur or diamond instrument of appropriate size
at high speed with air-water coolant, the outline form is prepared.
• All weakened enamel is removed and initial axial wall depth is
established.
• The bevel is prepared at 45 degree angle to the external tooth surface
with flame shaped diamond instrument.
• The width of the bevel should be 0.5 to 2mm.
40. RESTORATIVE TECHNIQUE
Contouring and polishing the class iv composite is similar to the technique of
class iii composite but usually more difficult. The primary differences are:
o The involvement of the incisal angle and edge of the tooth and extended
facial surface in large class iv.
o Close assessment of the incisal edge length and thickness.
o The potential occlusal relationship may be greater and require more
adjustment and refinement.
42. ACID ETCHING
• This is done using 37% phosphoric acid liquid or gel.
• The gel may be applied using a syringe applicator or brush.
• The etching time is 15sec for both enamel and dentin preparations. Following this
it has to be thoroughly rinsed with A water spray for 5 to 15sec.
• When the preparation is only in enamel, the surface can be dried with clean dry
air. The etched enamel will appear frosty white due to the removal of both prism
cores and peripheries creating microscopic irregularities.
• When the preparation involves both enamel and dentin, the surface should
be dried using cotton pellets.
• This is because acid etching of dentin removes the surface hydroxyapatite
from the intertubular and peritubular dentin thus opening the tubules
leaving an interconnected layers of collagen fibrils.
43. BONDING
• For the smear layer removing dentin bonding agents,
the primer and adhesive are combined in one bottle thus
simplifying the bonding process.
• The bonding agent is applied using a micro brush.
• The bonding agent penetrates the irregularities on enamel and bonds
micromechanically by formation of resins tags.
• On dentin the bonding agent penetrates the collagen network and the
dentinal tubules forms a hybrid layer consisting of a resin-dentin
interdiffusion zone.
44. MATRIX PLACEMENT
• The matrix may be placed either before or after etching and bonding.
• It is better to place the matrix band first before etching and bonding as it has
the following benefits:
o Good isolation of the prepared tooth to allow proper adhesion.
o It can help assess the soundness of gingival cavosurface margin during
wedge placement.
• For class iii cavities, clear polyester strip matrices are used.
• For class iv cavities, clear polyester strip or thin clear plastic crown form may
be used.
• No matrix is needed for class v cavities.
45. • Two types of matrices are available
- polyester matrix
- metal matrix
• various matrix retainer which can be used are
- Tofflemire retainer
- Compound supported metal matrix
- Sectional matrix system- palodent contact
46. Various matrices used in anterior composite restorations are:
• Clear plastic matrix:
Transparent plastic strips are employed as matrices for tooth-
coloured restoration as they allow light to be transmitted during
polymerization of composite resins.
• Window matrix:
This is modification of the tofflemire matrix.
It is used for class v amalgam restoration.
• Tin foil matrix:
This is used for class V restoration for conventional GIC.
Tin foil may be preshaped and cut according to the gingival third of
the buccal and lingual surfaces of the teeth to be restored.
• Preformed transparent cervical matrix:
They are commercially available in various contours for use
in anterior and posterior teeth.
47.
48. INSERTION OF COMPOSITE RESIN
• The composite resin is built incrementally using special
hand instruments in 1-2mm thickness.
• The material is contoured before light curing.
• The cavity is filled and contouring using the matrix
before final curing.
49. DIFFERENT DESIGNS OF INCREMENT PLACEMENT
1.Three increment design
One flat increment at gingival
& Occlusal wall & two oblique
Increments both at proximal box
Occlusal box.
1st increment thinner than 1.00mm.
2. Horizontal layering design
Small increments placed horizontally
One above the other, starting from
Gingival wall to occlusal wall.
50. 3. Oblique layering design
Each increment is placed obliquely Starting from any sides &
Curing Is done from all three sides.
4. U-shaped layering design
At base, both gingival & occlusal gingival,
U-shaped increment is given
51. 5. Vertical layering technique
Increments are placed in vertical fashion starting from one wall
and carried on to another wall and curing is done from behind
the wall.
6. Layering technique
In the proximal box and curing each increment by inserting
the fiber-optic microtip into composite.
52. FINISHING AND POLISHING
• After filling the entire cavity, the matrix is removed and
the restoration is finished and polished using finishing
burs, stones and strips.
• They are of two types:-
Natural abrasives
Manufactured or synthesized abrasives
54. CONCLUSION
Composite resins have provided clinicians with a wide
range of restorative options. They satisfy almost all the
requirements of an ideal restorative material. Their use has
risen almost exponentially in the last two decades and
have enabled dentists to implement preventive and
minimally invasive techniques, a prospect previously
desired but never truly attained. More importantly,
patients can retain their teeth longer, with a more esthetic
appearance, resulting in a healthier and self-confident
population.
55. REFERENCES
• Sturdevant’s art and science of operative dentistry.
• Clinical operative dentistry – Ramya Raghu.
• Basic dental materials – John J Manappallil.
Editor's Notes
Fiiler,Matrix,polymerisation,viscocity
Poly shrinkage:resin matrix-marginal gaps and enamel #..reduced by addition of fillers and incremental layering
Mech:similar flexural strengths
Coefcient of LE:hig