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.
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.for more details please visit
www.indiandentalacademy.com
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.for more details please visit
www.indiandentalacademy.com
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.for more details please visit
www.indiandentalacademy.com
Mandibular movements / /certified fixed orthodontic courses by Indian dental ...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.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
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.for more details please visit
www.indiandentalacademy.com
Indian Dental Academy: will be one of the most relevant and exciting training
center with best faculty and flexible training programs for dental
professionals who wish to advance in their dental practice,Offers certified
courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry,
Prosthetic Dentistry, Periodontics and General Dentistry.
Temporomandibular joint and mandibular movement/ oral surgery courses 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.for more details please visit
www.indiandentalacademy.com
The document discusses mandibular movements and their study. It describes various methods used to study jaw motion, including direct observation and electronic instrumentation. Key factors that regulate motion are the neuromuscular system, opposing tooth contacts, temporomandibular joint anatomy, and muscle action. The temporomandibular joint is a complex joint that allows for rotation and translation. Mandibular positions include centric occlusion, centric relation, and border positions. Mandibular movements include opening, closing, protrusion, retrusion and chewing motions.
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.for more details please visit
www.indiandentalacademy.com
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.for more details please visit
www.indiandentalacademy.com
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.for more details please visit
www.indiandentalacademy.com
Mandibular movements / /certified fixed orthodontic courses by Indian dental ...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.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
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.for more details please visit
www.indiandentalacademy.com
Indian Dental Academy: will be one of the most relevant and exciting training
center with best faculty and flexible training programs for dental
professionals who wish to advance in their dental practice,Offers certified
courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry,
Prosthetic Dentistry, Periodontics and General Dentistry.
Temporomandibular joint and mandibular movement/ oral surgery courses 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.for more details please visit
www.indiandentalacademy.com
The document discusses mandibular movements and their study. It describes various methods used to study jaw motion, including direct observation and electronic instrumentation. Key factors that regulate motion are the neuromuscular system, opposing tooth contacts, temporomandibular joint anatomy, and muscle action. The temporomandibular joint is a complex joint that allows for rotation and translation. Mandibular positions include centric occlusion, centric relation, and border positions. Mandibular movements include opening, closing, protrusion, retrusion and chewing motions.
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.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
Indian Dental Academy: will be one of the most relevant and exciting training
center with best faculty and flexible training programs for dental
professionals who wish to advance in their dental practice,Offers certified
courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry,
Prosthetic Dentistry, Periodontics and General Dentistry.
My mandibular movement final presentationPallawi Sinha
This document discusses the types and classification of mandibular movements. It describes the rotational and translational movements that can occur, as well as the three planes (sagittal, frontal, horizontal) in which border movements are defined. Key anatomical structures that influence mandibular motion are also outlined, including the temporomandibular joint components, muscles of mastication, and ligaments. Different functional movements like chewing and swallowing are contrasted with border movements.
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.for more details please visit
www.indiandentalacademy.com
Indian Dental Academy: will be one of the most relevant and exciting training
center with best faculty and flexible training programs for dental
professionals who wish to advance in their dental practice,Offers certified
courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry,
Prosthetic Dentistry, Periodontics and General Dentistry.
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.for more details please visit
www.indiandentalacademy.com
This document discusses protrusive occlusion, which occurs when the mandible moves forward from the centric position. When the mandible protrudes, the mandibular incisors first come edge to edge with the maxillary incisors and then move slightly in front of them, producing a temporary underbite. This is accomplished through downward and forward translation of the condyles along the articular eminence without rotation of the temporomandibular joint.
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
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.for more details please visit
www.indiandentalacademy.com
Eccentric movements of mandibular movements/prosthodontic coursesIndian 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.for more details please visit
www.indiandentalacademy.com
The document defines mandibular movements as any movement of the lower jaw, and describes several types of movements including rotation, translation, and combinations of the two. Mandibular movements are complex and occur during various functions like chewing, speaking, and facial expressions. Understanding mandibular movements is important for tasks like arranging artificial teeth and treating temporomandibular joint problems.
- The temporomandibular joint is comprised of the articular eminence, condyle, articular disc, and other structures. It works with the teeth, muscles of mastication, and other tissues as part of the masticatory system.
- Mandibular movement involves both rotation and translation in the temporomandibular joint and is regulated by the neuromuscular system within limits defined by the condyle path and opposing tooth contacts.
- Proper understanding of mandibular movement is important for occlusion, prosthodontic treatments, and articulator selection and adjustment.
Mandibular movement occurs around the TMJ and includes functional movements like chewing as well as parafunctional movements like bruxism. There are three main determinants that guide mandibular movement: condylar guidance from the shape of the glenoid fossa, incisal guidance from the shape of the front teeth, and neuromuscular control from the muscles of mastication. Mandibular movement can be described based on the axis of rotation, type of movement, extent, and dimension involved. Understanding mandibular movement is important for proper treatment and fabrication of dental prosthetics.
Position of condyle in cl ii & iii /certified fixed orthodontic courses by In...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.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
1. The document discusses jaw movements and positions, focusing on the temporomandibular joint and mandible.
2. It describes the temporomandibular joint in detail, including its components like the condyle, articular disc, and fossa. It also discusses the different types of mandibular movements like protrusion, retrusion, and lateral movements.
3. Mandibular movement is classified as rotational or translational depending on the dimensions involved. The main types of rotational movement are hinge, protrusive, and retrusive movements.
Dr. Ulf Posselt first described the envelope of motion in 1952 as a 3D concept to illustrate the possible movements of the mandible in all three planes of movement - sagittal, horizontal, and frontal. The envelope differs between individuals but maintains the same characteristic shape, with the superior surface determined by tooth contacts and the borders primarily determined by the TMJ anatomy and ligaments. The document then discusses reference positions like centric relation and maximum intercuspation, as well as types of mandibular movement including hinge, translational, and rotational. Border movements in the sagittal and horizontal planes are mapped out, illustrating positions like centric relation, maximum opening, and lateral excursions.
This document discusses the types of movements that occur in the temporomandibular joint (TMJ). There are two main types - rotational and translational movements. Rotational movements occur around horizontal, vertical, and sagittal axes of rotation within the inferior cavity of the joint. Translational movements involve the superior cavity gliding forward or backward. There are also four border movements in the sagittal, horizontal, and frontal planes that involve rotation, translation, and shifting of the condyles. Functional movements occur during activities like chewing and begin near or below the intercuspal position.
Physiology /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.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help boost feelings of calmness, happiness and focus.
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.for more details please visit
www.indiandentalacademy.com
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.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
Indian Dental Academy: will be one of the most relevant and exciting training
center with best faculty and flexible training programs for dental
professionals who wish to advance in their dental practice,Offers certified
courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry,
Prosthetic Dentistry, Periodontics and General Dentistry.
My mandibular movement final presentationPallawi Sinha
This document discusses the types and classification of mandibular movements. It describes the rotational and translational movements that can occur, as well as the three planes (sagittal, frontal, horizontal) in which border movements are defined. Key anatomical structures that influence mandibular motion are also outlined, including the temporomandibular joint components, muscles of mastication, and ligaments. Different functional movements like chewing and swallowing are contrasted with border movements.
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.for more details please visit
www.indiandentalacademy.com
Indian Dental Academy: will be one of the most relevant and exciting training
center with best faculty and flexible training programs for dental
professionals who wish to advance in their dental practice,Offers certified
courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry,
Prosthetic Dentistry, Periodontics and General Dentistry.
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.for more details please visit
www.indiandentalacademy.com
This document discusses protrusive occlusion, which occurs when the mandible moves forward from the centric position. When the mandible protrudes, the mandibular incisors first come edge to edge with the maxillary incisors and then move slightly in front of them, producing a temporary underbite. This is accomplished through downward and forward translation of the condyles along the articular eminence without rotation of the temporomandibular joint.
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
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.for more details please visit
www.indiandentalacademy.com
Eccentric movements of mandibular movements/prosthodontic coursesIndian 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.for more details please visit
www.indiandentalacademy.com
The document defines mandibular movements as any movement of the lower jaw, and describes several types of movements including rotation, translation, and combinations of the two. Mandibular movements are complex and occur during various functions like chewing, speaking, and facial expressions. Understanding mandibular movements is important for tasks like arranging artificial teeth and treating temporomandibular joint problems.
- The temporomandibular joint is comprised of the articular eminence, condyle, articular disc, and other structures. It works with the teeth, muscles of mastication, and other tissues as part of the masticatory system.
- Mandibular movement involves both rotation and translation in the temporomandibular joint and is regulated by the neuromuscular system within limits defined by the condyle path and opposing tooth contacts.
- Proper understanding of mandibular movement is important for occlusion, prosthodontic treatments, and articulator selection and adjustment.
Mandibular movement occurs around the TMJ and includes functional movements like chewing as well as parafunctional movements like bruxism. There are three main determinants that guide mandibular movement: condylar guidance from the shape of the glenoid fossa, incisal guidance from the shape of the front teeth, and neuromuscular control from the muscles of mastication. Mandibular movement can be described based on the axis of rotation, type of movement, extent, and dimension involved. Understanding mandibular movement is important for proper treatment and fabrication of dental prosthetics.
Position of condyle in cl ii & iii /certified fixed orthodontic courses by In...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.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
1. The document discusses jaw movements and positions, focusing on the temporomandibular joint and mandible.
2. It describes the temporomandibular joint in detail, including its components like the condyle, articular disc, and fossa. It also discusses the different types of mandibular movements like protrusion, retrusion, and lateral movements.
3. Mandibular movement is classified as rotational or translational depending on the dimensions involved. The main types of rotational movement are hinge, protrusive, and retrusive movements.
Dr. Ulf Posselt first described the envelope of motion in 1952 as a 3D concept to illustrate the possible movements of the mandible in all three planes of movement - sagittal, horizontal, and frontal. The envelope differs between individuals but maintains the same characteristic shape, with the superior surface determined by tooth contacts and the borders primarily determined by the TMJ anatomy and ligaments. The document then discusses reference positions like centric relation and maximum intercuspation, as well as types of mandibular movement including hinge, translational, and rotational. Border movements in the sagittal and horizontal planes are mapped out, illustrating positions like centric relation, maximum opening, and lateral excursions.
This document discusses the types of movements that occur in the temporomandibular joint (TMJ). There are two main types - rotational and translational movements. Rotational movements occur around horizontal, vertical, and sagittal axes of rotation within the inferior cavity of the joint. Translational movements involve the superior cavity gliding forward or backward. There are also four border movements in the sagittal, horizontal, and frontal planes that involve rotation, translation, and shifting of the condyles. Functional movements occur during activities like chewing and begin near or below the intercuspal position.
Physiology /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.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help boost feelings of calmness, happiness and focus.
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.for more details please visit
www.indiandentalacademy.com
This document provides an overview of the temporomandibular joint (TMJ). It begins by defining the TMJ as the joint connecting the mandible to the skull and regulating mandibular movement. It then describes the different types of joints in the body before focusing on the specifics of the TMJ. Key points include that the TMJ is a complex synovial joint that allows for both hinging and gliding movements. An articular disc separates the condyle of the mandible and fossa of the temporal bone. The document outlines the development, structures, innervation, vascularization and biomechanics of the TMJ.
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.for more details please visit
www.indiandentalacademy.com
This document discusses residual ridge resorption (RRR), which refers to the diminishing quantity and quality of the residual ridge after tooth extraction. It defines key terms and classifies RRR as a major oral disease entity. The document explores the etiology of RRR, identifying anatomic, metabolic, and mechanical cofactors. Anatomic factors include ridge morphology, facial morphology, and mandibular shape. Metabolic factors involve bone resorption and formation processes influenced by local and systemic factors. Mechanical forces from prosthetics can also contribute to RRR depending on factors like force amount, frequency, duration, and direction. The document will further discuss pathogenesis, epidemiology, treatment, and prevention of RRR.
This document discusses residual ridge resorption (RRR), which refers to the ongoing reduction in the size of the residual alveolar ridge even after tooth extractions have healed. RRR is a multifactorial process influenced by anatomic, metabolic, prosthetic, and functional factors. It occurs most rapidly in the first 6 months after extraction but continues slowly throughout life. Management of RRR focuses on preventing excessive bone loss through denture design, materials, and maintenance of proper occlusal vertical dimension.
The temporomandibular joint (TMJ) is a bilateral synovial joint that connects the mandible to the temporal bone. It has several unique features, including an articular disc that divides the joint into two compartments. The TMJ is innervated by the auriculotemporal nerve and receives its blood supply from branches of the external carotid artery. Common disorders of the TMJ include myofascial pain, derangements of the disc-condyle complex, and inflammatory conditions like arthritis. Treatment for TMJ disorders focuses on conservative and reversible therapies.
Surgical anatomy of the temporomandibular joint and surgical (nx power lite) ...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.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
DEVELOPMENTAL DISTURBANCES OF LIPS & PALATE / dental implant coursesIndian 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.for more details please visit
www.indiandentalacademy.com
Infections of oral & para-oral tissuesMona Shehata
This document discusses various infectious agents that can infect oral and para-oral tissues. It begins by classifying infectious agents into metazoa, protozoa, fungi, bacteria, viruses, and prions. For each category, examples of important infectious diseases are provided along with brief descriptions. Specific oral infections caused by bacteria, fungi, parasites, and viruses are then discussed in more detail, including acute necrotizing ulcerative gingivitis, Vincent's angina, pericoronitis, diphtheria, and anthrax. Clinical features and treatment for many of these infections are summarized.
The presentation expalin major anomilies terminology and it's classification according to the site as: jaws, palate, lips gingivae, tongue, salivary gland, line of fusion and teeth
The document discusses the muscles of mastication, including their origins, insertions, nerve supply and actions. It describes the masseter, temporalis, lateral pterygoid, and medial pterygoid muscles as the primary muscles of mastication. It also covers the accessory muscles involved in mastication like the digastric, mylohyoid, geniohyoid and buccinator.
The document summarizes the development of the face from the 4th week of embryonic development. It discusses how the frontonasal process, maxillary processes, and mandibular processes form the structures of the face, including the lips, nose, eyes, ears, and palate. It also describes the development of branchial arches and how they contribute to specific muscles, nerves, arteries, and bones. The formation and differentiation of the pharyngeal pouches and clefts that form parts of the ear, thyroid, parathyroid glands and thymus are also outlined.
Complications of orthognathic surgery /certified fixed orthodontic courses by...Indian dental academy
This document summarizes the potential complications of orthognathic surgery. It describes complications that may arise from patient selection and assessment, dental issues, radiography, photography and models, treatment planning, and the surgical procedures themselves for the maxilla and mandible. It also discusses late post-operative complications both locally and systemically. Careful patient evaluation, treatment planning, surgical skill and technique, and post-operative management are essential to minimize complications.
Residual ridge reduction and flabby ridgesAyesha Abbas
The residual ridge reduction (RRR) is the chronic, progressive loss of bone in the jaw after tooth extraction. RRR is typically greater in the mandible than the maxilla. Key factors that affect RRR include anatomic factors like bone quality, metabolic factors like hormones and nutrition, and mechanical factors like biting forces. Management options focus on tissue rest and impression techniques that minimize pressure on flabby ridges.
Craniosynostosis is a birth defect where the sutures in a baby's skull close prematurely, causing abnormal skull and brain growth. There are several types defined by which suture is involved, including sagittal, coronal, metopic, and multiple sutures. The recommended treatment is early surgery to release the fused sutures and reshape the skull, often followed by molding helmet therapy. With early detection and treatment, craniosynostosis can be effectively managed to reduce pressure, correct deformities, and allow normal skull and brain development.
This document discusses residual ridge resorption (RRR), which is the ongoing loss of jawbone that occurs after tooth extraction. It begins with definitions and an overview of the extraction healing process. It then covers the basic bone structure, cells involved in bone remodeling, and the mechanisms of bone resorption. The pathology, pathophysiology, and pathogenesis of RRR are explained. Changes to the maxilla and mandible due to RRR are described. The document lists anatomical, metabolic, functional, and prosthetic factors that contribute to RRR and discusses its epidemiology and etiology.
Balanced occlusion and its importance/ cosmetic dentistry trainingIndian dental academy
Indian Dental Academy: will be one of the most relevant and exciting
training center with best faculty and flexible training programs
for dental professionals who wish to advance in their dental
practice,Offers certified courses in Dental
implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic
Dentistry, Periodontics and General Dentistry.
This document provides an overview of mandibular movements and the temporomandibular joint (TMJ). It discusses the anatomy of the TMJ, types of mandibular movements including rotation and translation, and the three planes of border movements: sagittal, frontal, and horizontal. It also examines the determinants of mandibular movement, including condylar guidance, anterior guidance, and the neuromuscular system. The chewing stroke and neuromuscular regulation of movement are described.
The document defines various anatomical structures and movements of the temporomandibular joint (TMJ). It describes the TMJ as a synovial joint that allows hinge-like and sliding movements between the condyle of the mandible and temporal bone. Key terms defined include the articular disc, ligaments, muscles of mastication, and different movements such as protrusion, retrusion, and lateral excursions.
Mandibular movements occur around the TMJ which is capable of making complex movements. Temporomandibular joint is the joint connecting your lower jaw and your skull.
The movements can be categorized as follows -
Basic movements
Excursive movements
Border movements
Functional movements
Parafunctional movements
Factors affecting mandibular movements are –
Condylar path / guidance
Opposing tooth contact and Anterior guidance
Neuromuscular control
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.for more details please visit
www.indiandentalacademy.com
This document discusses the registration of jaw relations and transfer of these relations to an articulator during the construction of complete dentures. It describes three types of jaw relationships - maxillo-tempromandibular joint relationship, centric jaw relation, and protrusive and lateral relationships. Face-bow transfer is used to accurately locate the hinge axis and transfer the maxilla/hinge axis relationship to the articulator. There are two types of face-bows - kinematic and arbitrary. Arbitrary face-bows are based on average hinge axis locations and are used for complete denture fabrication. Jaw registration involves recording the condylar movements to understand mandibular movements and ensure proper functioning of replaced dentures
Physiology of the stomatognathic system /certified fixed orthodontic courses ...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.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
Protrusive occlusion occurs when the mandible moves forward from the centric position, causing the lower incisors to move past the upper incisors and create a temporary underbite. This movement is accomplished by the condyles translating downward along the articular eminence without rotation. The lateral pterygoid muscle, assisted by the medial pterygoid, is responsible for protruding the mandible forward. Achieving protrusive balanced occlusion depends on the relationship between the track of mandibular cusp movement and the working incline of the maxillary cusps being equal.
1) The temporomandibular joint (TMJ) is a synovial joint that connects the mandible to the temporal bone. It has several parts including the articular eminence, fossa, condyle, capsule, ligaments, synovial fluid, and articular disc.
2) The articular disc sits between the condyle and fossa and divides the joint into two compartments. It allows the condyle to glide forward during opening and back during closing.
3) Four jaw muscles work in coordination to produce movements like opening, closing, protruding, and grinding. The lateral pterygoid muscle plays a key role in pulling the disc as the jaw opens
1) TMJ dislocation and subluxation involve the displacement of the mandibular condyle from the glenoid fossa. Dislocation is a complete separation while subluxation is a self-limiting, partial displacement.
2) The TMJ has a complex anatomy including the condyle, articular eminence, articular disc, ligaments, and synovial membrane. The articular disc divides the joint and allows both rotational and translational movements.
3) Acute dislocations are usually caused by wide yawning, vomiting, or trauma. Chronic dislocations can be caused by lax ligaments, occlusal factors like bruxism, or psychogenic factors.
01 occlusion in prosthodontics introduction - stomatognathic system- definiti...Amal Kaddah
This document discusses dental occlusion, including:
- The stomatognathic system and its components like the teeth, jaws, muscles etc.
- Temporomandibular joint anatomy and the muscles involved in jaw movement.
- Concepts of occlusion like centric relation, centric occlusion, maximum intercuspation.
- Factors affecting balanced occlusion and the importance of recording occlusion for removable prosthodontics.
It provides definitions and explanations of key occlusion terms and concepts.
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.for more details please visit
www.indiandentalacademy.com
1. Jaw relation is dependent on three factors - the temporomandibular joint (TMJ), muscles, and occlusion. A thorough understanding of these three areas is essential for orthodontists.
2. The TMJ is made up of the mandibular fossa, condyle, articular disc, ligaments, and muscles. The articular disc divides the joint into two synovial compartments.
3. Several muscles are involved in jaw movement, including the masseter, temporalis, and lateral and medial pterygoid muscles. Their coordinated action allows for movements like opening, closing, and lateral excursions.
01 occlusion in prosthodontics introduction - stomatognathic system- definiti...Amal Kaddah
This document provides an overview of dental occlusion including:
- The key components of the stomatognathic system and their functions
- Definitions of important occlusion terms like centric relation, centric occlusion, maximum intercuspation
- Descriptions of mandibular movements and the muscles that control them
- Explanations of balanced occlusion and factors that affect it
- The importance of recording occlusion for removable prosthodontics and making corrections
01 occlusion in prosthodontics introduction - stomatognathic system- definiti...Amal Kaddah
The document discusses dental occlusion, including:
- The stomatognathic system which includes the teeth, jaws, muscles and joints that enable chewing.
- What occlusion is, the importance of ideal occlusion, and the differences between natural and artificial occlusion.
- Mandibular movements including centric relation, centric occlusion, and excursive movements.
- Factors that affect balanced occlusion such as simultaneous anterior and posterior tooth contacts.
- The use of articulators and facebows to record occlusion for removable prosthodontics.
Muscles of mastication are the group of muscles that help in movement of the mandible as during chewing and speech. We need to study these muscles as they control the opening & closing the mouth & their role in the equilibrium created within the mouth. They also play a role in the configuration of face.
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The document discusses key concepts related to occlusion and jaw relationships. It begins by defining the stomatognathic system as the complex system of muscles, teeth, and tissues that enable chewing and jaw movement. It then describes the temporomandibular joint and its components that allow the mandible to hinge and translate. The document outlines the muscles of mastication and their functions in opening, closing, and moving the jaw from side to side. It discusses the importance of recording jaw relationships including orientation, vertical, and horizontal relations. The concepts of centric relation, centric occlusion, and maximum intercuspation are defined and the differences between them are explained.
The document discusses key concepts related to occlusion and jaw relationships. It begins by defining the stomatognathic system as the complex system of muscles, teeth, and bones that allow for mastication. It then describes the temporomandibular joint and its components. The document outlines the muscles of mastication and their functions. It discusses the different types of jaw relationships including centric relation and centric occlusion. It also covers topics like occlusal plane orientation, eccentric movements, balancing side occlusion, and recording jaw relations.
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A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
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2.
INTRODUCTION
The masticatory system is extremely complex. It is made up of
bones, muscles, ligaments and teeth. Movement of mandible is
regulated by neurologic controlling mechanism
Mandible performs habitual movements, border movements,
opening movements, closing movements, protrusive and lateral
movements.
The main influences on normal jaw movements are the teeth
the joints and the surrounding muscle and ligaments.
A basic knowledge of masticatory system starts with
temporomandibular joint, since it is the centre of structural and
functional interrelationships.
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3.
TMJ ANATOMY
Condyles articulate with temporal bone and are
located in elliptical concave depression called the
glenoid fossa in which they travel forward, from side to
side. Between the dome shaped concavities in the
temporal bones and the condyles are interposed the
interarticular fibrocartilage, the meniscus, which are
attached at their margins in the articular capsule. The
meniscus divides the joints into upper and lower
compartment is chiefly a gliding motion. The
movement in lower compartment is hinge like. The
directional movements of the mandible are results of
combined action occurring simultaneously in both
fossa.
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4.
MUSCLES FOR MANDIBULAR MOVEMENT
The muscles involved in mandibular movements are
muscles of mastication, and suprahyoid muscles.
1)Temporalis
Origin
From temporal fossa, excluding the zygomatic bone.
Insertion
Coronoid process and along the anterior border of
ascending ramus of mandible.
Action
Normally, the anterior fibers may contract shortly before
the rest of the fibers contract when elevation of mandible begun.
The posterior fibers of one side are active in abductive
mandibular movements of the same side, but bilateral retraction
of the mandible from a protruded position involves all fibers of
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6.
2) Masseter
This muscle is rectangular.
Origin
Zygomatic arch and Coronoid process.
Insertion
on the lateral surface of mandibular to the lower one
third of the posterior lateral surface of ramus of the
mandible and Coronoid process.
Action
Mandibular elevation is principle function. Although, it
may assist in simple protraction and plays a dominant
role in elevation if the mandibular is being protracted.
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8.
3) Medial pterygoid
muscle
Origin
Pterygoid fossa
Insertion
Medial surface of the angle of mandible and adjoining
part of the ramus of mandible.
Action
Elevation and lateral position of mandible
In protrusion of mandible
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10. 4) Lateral pterygoid
Origin
Two origins
One head of muscle originates in the outer surface of lateral
pterygoid plate while a smaller and upper head originates from
greater sphenoid wing.
Insertion
Anterior surface of neck of condyle. Also some fibers inserted
into the capsule of join and to the anterior aspect of articular
The pterygoid muscle appears to be concerned with all degrees of
protraction and opening movements of mandible.
It is also active during lateral movements but is assisted by the
masseter, med pterygoid and anterior posterior parts of temporal
muscle.
Action
Protraction of condyle and at the same time drawing the disc
forward.
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11.
The pterygoid muscle appears to be concerned with all
degrees of protraction and opening movements of
mandible.
It is also active during lateral movements but is
assisted by the masseter, med pterygoid and anterior
posterior parts of temporal muscle
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13.
Muscles of depression
There are three groups of muscles that act to depress
mandible.
Suprahyoid
1. Diagastric
2. Genyohyoid
3. Mylohyoid
4. Stylohyoid
Platisma act as a group and are primary movers in
opening of mandible.
Infrahyoid – act to stabilize hyoid bone so the
suprahyoid group can be effective.
The third group i.e. lateral pterygoid pull the
condyles forward or medial ward as the other group act.
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14.
LIGAMENTS OF TEMPOROMANDIBULAR
JOINT
Lateral ligament of TMJ : limit amount of rotation
of mandible and protract retrodiscal pad from posterior
movement of condyle.
Sphenomandibular ligament :limit separation
between condylar process and the disc.
Stylomandibular ligament: limit separation between
condylar process and the disc as well as limit protrusive
movements of mandible.
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15.
MANDIBULAR MOVEMENTS
Mandibular movement occurs as a complex series of
interrelated three dimensional rotation and transitional
activities. It is determined by combined and simultaneous
activities of both temporomandibular joints
Two types of movement occur in the TMJ.
1)Rotational movement
2)Translational movement
Rotational movement
Movement of body about its axis is called as rotation.
Rotation occurs when mouth opens and closes around a
fixed point or axis within the condyles.
Rotational movement occurs in inferior joint cavity,
between the superior surface of the condyle and the interior
surface articular disc. Rotational movement of mandible
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occurs in all three reference planes.
16.
1.Horizontal axis of
movement : is an
opening and closing
motion. It is referred as
hinge movement,and the
horizontal axis around
which it occure is called
as hinge axis
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17.
2.Vertical axis of
rotation: one condyle
moves anteriorly out
of the terminal hinge
position with the
vertical axis of
opposite condyle
remaining in the
terminal hinge
position.
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18.
3. Sagittal axis of
rotation: one condyle
moves inferiorly while
other remains in
terminal hinge
position.
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19.
Translational movement
This movement is defined as movement in which
every point of moving object has simultaneously the
same velocity and direction. If occurs when the
mandible brought forward during protrusion. The teeth
condyles and the rami all move in same direction and to
the same degree.
Translation occurs in the superior joint cavity
between the superior surface of the articular disc and
the mandibular fossa.
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20.
Border movement
The maximum amount of movement in any plane
or direction is termed the border movement. Within the
confines of the border movements there is an extremely
wide range of movement called intraborder movement.
Most mandibular movement occurs as intraborder
movements. Function at the border limits is usually
demonstrated during parafunctional activities such as
bruxism or wide opening yawning
Border movement demonstrates the movement from
centric occlusion backward to centric relation and
forward to protrusive border movement. The
lowermost point in the point of maximum opening
from where the mandible can be taken to all border
movements
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21.
Physiologic rest position
The position assumed by mandible when the head
is in an upright position, the muscles are in equilibrium
in tonic contraction and condyles are in a unstrained
neutral position is the physiologic rest position of
mandible.
The jaws are not clamped together but, they are
separated by rather constant distance, the muscles are
not in active function, a limited number of fibers are
apparently still contracting to maintain the relaxed
position of the mandible and posture of the head
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22.
Centric mandibular movements
Centric relation
Centric relation is the most posterior position of
the mandible relative to the maxilla at the established
vertical dimension.
Centric relation is not a resting or postural position of
the mandible. Contraction of muscles is necessary to
move and fix the mandible in it
Centric occlusion
Centric occlusion is relation of opposing occlusal
surfaces that provides maximum intercuspation or
planned contact
Once centric relarion is established centric occlusion
can be built to coincide with it or to provide a broad
area of tooth contact in this position.
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23.
Eccentric mandibular movements
Any relation of the mandible to the maxilla other
than centric relation is an eccentric relation.
Eccentric mandibular movements are protrusive
and lateral movements
Protrusive movement
Protrusive relation is the relation of the mandible to
the maxilla when the mandible is thrust forward.
The mandible translate in forward and downward
direction during protrusive movement.
The orbit produced by centers of right and left
condyles during protrusive movements is referred as
protrusive condylar path
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24.
. When the protrusive condylar path projected on to the
sagittal plane, it is called sagittal protrusive condylar
path
The muscles responsible for a straight protrusive
movement are external pterygoid muscles acting
simultaneously.
During protrusive movements, the mandibular anterior
teeth protrude forward and downward, disocluding the
posterior teeth. The orbit of the incisal point from
maximum intercuspation to edge to edge occlusion is
referred to as protrusive incisal path.
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25.
Lateral movement
Lateral movement of mandible occurs when one
condyle rotates within TM fossa and the other condyle
translates forward and inward.
The translating condyle is called the non-working
condyle and the rotating condyle is called the working
condyle.
The lateral movement from occlusal position and back
again is asymmetric.
This movement is mainly turn to one side and only a
very slight bodily lateral translation of entire mandible.
The direction of lateral movements is determined by
external – pterygoid muscle on the non-working side
and by deep capsular ligaments of the condyle on
working side.
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26.
Opening and closing movements
On opening, the mandible rotates around a horizontal
axis of rotation which passes approximately through the
centers of two condyles.
Retruded opening and closing
With effort and patience the mandible can be
pulled back and made to rotate about an axis through
the condyles which is rotational and involves no
translation.
Bennett movement
Bennett in 1908 studied the working condylar path
and called it ‘Bennett movement’ now referred to as
laterotrusion. Bennett movement is a bodily side shift
of mandible that occurs during lateral movement.
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27.
During lateral movement working condyle rotates and
moves slightly outward. This movement is between 2-4
mm.
Functional movements
Functional mandibular movement included all
natural and characteristic movement occurring during
mastication, swallowing, speech and respiration.
Much of the functional movements of the
mandible take place inside the physiologic limits
established by teeth, TMJ, muscles and ligaments.
Among the functions of masticatory system swallowing
and respiration are innate where as chewing and speech
are learned.
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28.
Parafunctional mandibular movements
Parafunctional movements of the mandible are
activities that serve no useful function and are
potentially harmful to the dentition and its contagious
structures. They can result in tooth mobility, migration,
excessive wear or fracture, PDL widening. TMJ pain,
muscle pain, restricted mandibular movements.
ex. Bruxism
Normal person masticate with chewing strokes that
are well rounded, within definite borders, and less
repeated.
In bruxism the strokes are much shorter and slower
and have an irregular but repeatable pathway appear to
relate to the altered functional movement of the
condyle which the disorder is centered.
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29.
CONCLUSION
The mandibular movement is considered as
the chewing apparatus of masticatory system. It
should be kept in mind that mandibular
movements occurs besides mastication like in
the digestive and respiratory acts, vocal
performances and more or less every day human
activities behaviors.
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