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.
Muscles of mastication.ppt/certified fixed orthodontic courses by Indian dent...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 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
Description :
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
Muscles of mastication /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.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 document summarizes the muscles of mastication, including their origin, insertion, function, nerve and blood supply, and clinical significance. It discusses the four primary muscles - temporalis, masseter, lateral pterygoid, and medial pterygoid - as well as some accessory muscles like the digastric. The temporalis muscle elevates the mandible, the masseter muscle elevates and moves the mandible laterally, the lateral pterygoid muscle depresses and protrudes the mandible, and the medial pterygoid muscle elevates and closes the jaw. Understanding the muscles of mastication is important for dentistry, prosthodontics and evaluating facial pain disorders
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
Muscles of mastication.ppt/certified fixed orthodontic courses by Indian dent...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 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
Description :
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
Muscles of mastication /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.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 document summarizes the muscles of mastication, including their origin, insertion, function, nerve and blood supply, and clinical significance. It discusses the four primary muscles - temporalis, masseter, lateral pterygoid, and medial pterygoid - as well as some accessory muscles like the digastric. The temporalis muscle elevates the mandible, the masseter muscle elevates and moves the mandible laterally, the lateral pterygoid muscle depresses and protrudes the mandible, and the medial pterygoid muscle elevates and closes the jaw. Understanding the muscles of mastication is important for dentistry, prosthodontics and evaluating facial pain disorders
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 document discusses the muscles of mastication. It describes the four primary muscles - masseter, temporalis, lateral pterygoid, and medial pterygoid. It details the origin, insertion, nerve supply, blood supply, actions and functions of each muscle. The document also briefly discusses secondary muscles like the suprahyoid muscles. Clinical considerations related to the muscles of mastication like tetanus, bruxism, and myofascial pain dysfunction syndrome are mentioned at the end.
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.
Mastication is a harmonious and skillful activity which requires the presence and co ordination of not only the muscles of mastication but also the supra infra-hyoid muscles, and the facial muscles
BASIC MUSCLES:
Temporalis
Masseter
Medial Pterygoid
Lateral Pterygoid
The document summarizes the muscles of mastication - their anatomy, development, physiology and clinical importance. It describes the four primary muscles - masseter, temporalis, lateral and medial pterygoid muscles. It also discusses the secondary suprahyoid muscles. The physiology section explains the neuromuscular transmission process where a nerve impulse causes acetylcholine release and generation of an action potential in the muscle fiber. Blocking the neuromuscular junction has clinical applications like muscle relaxation during surgery.
The muscles of mastication include the masseter, temporalis, medial pterygoid, and lateral pterygoid muscles. These primary muscles elevate, protrude, retract, and move the mandible laterally during chewing. The masseter muscle originates on the zygomatic arch and inserts on the mandible ramus. The temporalis muscle originates broadly on the temporal fossa and inserts into the coronoid process and mandible. The medial and lateral pterygoid muscles both originate on pterygoid processes and insert on the mandible ramus and condyle, respectively. Secondary muscles like the digastric and mylohyoid also assist in mastication by depressing
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 discusses the muscles of mastication including the masseter, temporalis, lateral pterygoid, and medial pterygoid muscles. It describes the masticatory system and its components, the functions of mastication in breaking down food, and the chewing cycle. It also discusses the neurological control of mastication and additional muscles involved like the digastric. The importance of understanding the masticatory system for dentists is described for areas like prosthodontics and its relevance to jaw movements. Some clinical significance of lesions impacting structures involved in mastication are also noted.
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 discusses the muscles of mastication. It begins by introducing the muscles and their anatomy. The primary muscles of mastication are the masseter, temporalis, medial pterygoid, and lateral pterygoid muscles. It describes the origin, insertion, nerve supply, blood supply, and actions of each muscle. Additionally, it covers related topics like the embryology of the muscles, clinical considerations like trismus and bruxism, and the significance of the muscles in orthodontics.
This document discusses the anatomy and disorders of the muscles involved in mastication. It begins by defining muscle tissue and mastication. There are three main types of muscle: skeletal, smooth, and cardiac. The primary muscles of mastication are the masseter, temporalis, lateral pterygoid, and medial pterygoid. Accessory muscles include the suprahyoid muscles (digastric, geniohyoid, mylohyoid, stylohyoid) and infrahyoid muscles (sternohyoid, thyrohyoid, omohyoid). Common masticatory muscle disorders are trismus, protective co-contraction, local muscle soreness, myospasm
The document discusses the muscles of mastication. It begins by classifying muscles based on their structure, control, and function. The major muscles involved in mastication - the temporalis, masseter, and medial and lateral pterygoid muscles - are then described in more detail. The document also covers the embryology, histology, diseases, and applied anatomy of the muscles of mastication.
Muscles of mastication / dental implant 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.for more details please visit
www.indiandentalacademy.com
This document describes the four main muscles involved in mastication - the temporalis, masseter, lateral pterygoid, and medial pterygoid muscles. It provides details on the origin, insertion, nerve supply, action, and relations of each muscle. The temporalis muscle elevates and retracts the mandible. The masseter muscle elevates the mandible to close the mouth. The lateral and medial pterygoid muscles work together to depress the mandible to open the mouth and protrude the mandible.
Muscles of mastication deepak final copyDeepak Kakde
The document discusses the muscles of mastication. It describes the four primary muscles - masseter, temporalis, lateral pterygoid, and medial pterygoid. It details the origin, insertion, nerve supply and actions of each muscle. It also discusses the secondary muscles that assist in mastication, including the digastric, mylohyoid and geniohyoid muscles. Finally, it covers some clinical considerations regarding diseases and disorders that can affect the muscles of mastication.
The document discusses the muscles of mastication. It describes the primary muscles - temporalis, masseter, medial pterygoid, and lateral pterygoid muscles. The secondary muscles include the digastric, mylohyoid, and geniohyoid muscles. The development of the muscles from pharyngeal arches is explained. Clinical features like myalgia, myositis, trismus, and hypertrophy affecting the muscles are also covered. Management options for various conditions are summarized.
This document provides information about masticatory muscles. It begins with definitions of muscle and the different types of muscle contractions. It then describes the four major muscles of mastication - masseter, temporalis, medial pterygoid, and lateral pterygoid muscles. It details the origin, insertion, nerve supply and function of each muscle. The document also discusses reflex mechanisms involved in mastication and provides implications for prosthodontics. Finally, it mentions some disorders that can affect the masticatory muscles.
Muscles of mastication prosthodontic considerationNeerajaMenon4
The document discusses the muscles involved in mastication and their influence on denture borders. It describes the masseter muscle pushing the buccinator medially, requiring a masseteric groove contour in dentures. The medial pterygoid contracts during closing and influences the retromylohyoid border. Temporalis and lateral pterygoid position the condyles in centric relation, with lateral pterygoid controlling condylar movement during function. Occlusal splints promote muscle relaxation and neuromuscular harmony.
This document discusses the muscles of mastication. It begins by defining mastication and describing the development of muscles from embryonic tissues. The primary muscles of mastication - masseter, temporalis, lateral pterygoid, and medial pterygoid - are then described in detail, including their origins, insertions, nerve/blood supply, and actions. Secondary muscles like the digastric, mylohyoid, and geniohyoid that assist in mastication are also outlined. The document concludes that the masticatory system requires precise muscle movement to effectively move the teeth during function.
The document provides information on the muscles of mastication. It discusses the various muscles involved in chewing like the temporalis, masseter, lateral and medial pterygoid. It describes the origin, insertion, nerve supply, actions and clinical importance of these primary muscles. It also touches upon the embryology, classification and functions of the muscles. Additionally, it explains the chewing cycle involving opening, closing and power strokes and the reflexes involved in mastication.
The document discusses the muscles of mastication - the muscles involved in chewing. It describes the anatomy, development, functions and clinical significance of the main muscles - the masseter, temporalis, lateral and medial pterygoid muscles. Conditions involving the muscles like myofascial pain dysfunction syndrome, trismus and benign masseteric hypertrophy are also covered. The muscles of mastication are important for prosthodontists to consider during treatments like impression making and recording jaw relations.
Muscles of mastication /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
0091-9248678078
The document summarizes the muscles of mastication. It describes the origin, insertion, innervation, blood supply, actions, and clinical importance of the major muscles - masseter, temporalis, medial pterygoid, and lateral pterygoid. It also discusses the development of the muscles, their role in mastication, deglutition and speech, investigations used to study the masticatory system, and disorders that can affect the muscles of mastication.
The document discusses the muscles of mastication. It describes the four primary muscles - masseter, temporalis, lateral pterygoid, and medial pterygoid. It details the origin, insertion, nerve supply, blood supply, actions and functions of each muscle. The document also briefly discusses secondary muscles like the suprahyoid muscles. Clinical considerations related to the muscles of mastication like tetanus, bruxism, and myofascial pain dysfunction syndrome are mentioned at the end.
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.
Mastication is a harmonious and skillful activity which requires the presence and co ordination of not only the muscles of mastication but also the supra infra-hyoid muscles, and the facial muscles
BASIC MUSCLES:
Temporalis
Masseter
Medial Pterygoid
Lateral Pterygoid
The document summarizes the muscles of mastication - their anatomy, development, physiology and clinical importance. It describes the four primary muscles - masseter, temporalis, lateral and medial pterygoid muscles. It also discusses the secondary suprahyoid muscles. The physiology section explains the neuromuscular transmission process where a nerve impulse causes acetylcholine release and generation of an action potential in the muscle fiber. Blocking the neuromuscular junction has clinical applications like muscle relaxation during surgery.
The muscles of mastication include the masseter, temporalis, medial pterygoid, and lateral pterygoid muscles. These primary muscles elevate, protrude, retract, and move the mandible laterally during chewing. The masseter muscle originates on the zygomatic arch and inserts on the mandible ramus. The temporalis muscle originates broadly on the temporal fossa and inserts into the coronoid process and mandible. The medial and lateral pterygoid muscles both originate on pterygoid processes and insert on the mandible ramus and condyle, respectively. Secondary muscles like the digastric and mylohyoid also assist in mastication by depressing
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 discusses the muscles of mastication including the masseter, temporalis, lateral pterygoid, and medial pterygoid muscles. It describes the masticatory system and its components, the functions of mastication in breaking down food, and the chewing cycle. It also discusses the neurological control of mastication and additional muscles involved like the digastric. The importance of understanding the masticatory system for dentists is described for areas like prosthodontics and its relevance to jaw movements. Some clinical significance of lesions impacting structures involved in mastication are also noted.
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 discusses the muscles of mastication. It begins by introducing the muscles and their anatomy. The primary muscles of mastication are the masseter, temporalis, medial pterygoid, and lateral pterygoid muscles. It describes the origin, insertion, nerve supply, blood supply, and actions of each muscle. Additionally, it covers related topics like the embryology of the muscles, clinical considerations like trismus and bruxism, and the significance of the muscles in orthodontics.
This document discusses the anatomy and disorders of the muscles involved in mastication. It begins by defining muscle tissue and mastication. There are three main types of muscle: skeletal, smooth, and cardiac. The primary muscles of mastication are the masseter, temporalis, lateral pterygoid, and medial pterygoid. Accessory muscles include the suprahyoid muscles (digastric, geniohyoid, mylohyoid, stylohyoid) and infrahyoid muscles (sternohyoid, thyrohyoid, omohyoid). Common masticatory muscle disorders are trismus, protective co-contraction, local muscle soreness, myospasm
The document discusses the muscles of mastication. It begins by classifying muscles based on their structure, control, and function. The major muscles involved in mastication - the temporalis, masseter, and medial and lateral pterygoid muscles - are then described in more detail. The document also covers the embryology, histology, diseases, and applied anatomy of the muscles of mastication.
Muscles of mastication / dental implant 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.for more details please visit
www.indiandentalacademy.com
This document describes the four main muscles involved in mastication - the temporalis, masseter, lateral pterygoid, and medial pterygoid muscles. It provides details on the origin, insertion, nerve supply, action, and relations of each muscle. The temporalis muscle elevates and retracts the mandible. The masseter muscle elevates the mandible to close the mouth. The lateral and medial pterygoid muscles work together to depress the mandible to open the mouth and protrude the mandible.
Muscles of mastication deepak final copyDeepak Kakde
The document discusses the muscles of mastication. It describes the four primary muscles - masseter, temporalis, lateral pterygoid, and medial pterygoid. It details the origin, insertion, nerve supply and actions of each muscle. It also discusses the secondary muscles that assist in mastication, including the digastric, mylohyoid and geniohyoid muscles. Finally, it covers some clinical considerations regarding diseases and disorders that can affect the muscles of mastication.
The document discusses the muscles of mastication. It describes the primary muscles - temporalis, masseter, medial pterygoid, and lateral pterygoid muscles. The secondary muscles include the digastric, mylohyoid, and geniohyoid muscles. The development of the muscles from pharyngeal arches is explained. Clinical features like myalgia, myositis, trismus, and hypertrophy affecting the muscles are also covered. Management options for various conditions are summarized.
This document provides information about masticatory muscles. It begins with definitions of muscle and the different types of muscle contractions. It then describes the four major muscles of mastication - masseter, temporalis, medial pterygoid, and lateral pterygoid muscles. It details the origin, insertion, nerve supply and function of each muscle. The document also discusses reflex mechanisms involved in mastication and provides implications for prosthodontics. Finally, it mentions some disorders that can affect the masticatory muscles.
Muscles of mastication prosthodontic considerationNeerajaMenon4
The document discusses the muscles involved in mastication and their influence on denture borders. It describes the masseter muscle pushing the buccinator medially, requiring a masseteric groove contour in dentures. The medial pterygoid contracts during closing and influences the retromylohyoid border. Temporalis and lateral pterygoid position the condyles in centric relation, with lateral pterygoid controlling condylar movement during function. Occlusal splints promote muscle relaxation and neuromuscular harmony.
This document discusses the muscles of mastication. It begins by defining mastication and describing the development of muscles from embryonic tissues. The primary muscles of mastication - masseter, temporalis, lateral pterygoid, and medial pterygoid - are then described in detail, including their origins, insertions, nerve/blood supply, and actions. Secondary muscles like the digastric, mylohyoid, and geniohyoid that assist in mastication are also outlined. The document concludes that the masticatory system requires precise muscle movement to effectively move the teeth during function.
The document provides information on the muscles of mastication. It discusses the various muscles involved in chewing like the temporalis, masseter, lateral and medial pterygoid. It describes the origin, insertion, nerve supply, actions and clinical importance of these primary muscles. It also touches upon the embryology, classification and functions of the muscles. Additionally, it explains the chewing cycle involving opening, closing and power strokes and the reflexes involved in mastication.
The document discusses the muscles of mastication - the muscles involved in chewing. It describes the anatomy, development, functions and clinical significance of the main muscles - the masseter, temporalis, lateral and medial pterygoid muscles. Conditions involving the muscles like myofascial pain dysfunction syndrome, trismus and benign masseteric hypertrophy are also covered. The muscles of mastication are important for prosthodontists to consider during treatments like impression making and recording jaw relations.
Muscles of mastication /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
0091-9248678078
The document summarizes the muscles of mastication. It describes the origin, insertion, innervation, blood supply, actions, and clinical importance of the major muscles - masseter, temporalis, medial pterygoid, and lateral pterygoid. It also discusses the development of the muscles, their role in mastication, deglutition and speech, investigations used to study the masticatory system, and disorders that can affect the muscles of mastication.
The temporomandibular joint (TMJ) connects the mandible to the temporal bone. It is a diarthrodial joint that allows for both hinge and gliding movements. The TMJ consists of the condylar process of the mandible, the mandibular fossa of the temporal bone, articular discs, synovial fluid, ligaments including the temporomandibular, sphenomandibular and stylomandibular ligaments, and muscles like the masseter, temporalis, and lateral and medial pterygoid muscles. The muscles of mastication work together to elevate, retract, protrude and move the mandible from side to side for
The document provides an introduction to the temporomandibular joint (TMJ), including its function, features, and classification. It discusses the anatomy and histology of the TMJ structures such as the condyle, articular disc, capsule, and ligaments. The development of the TMJ from fetal stages to adulthood is described. The muscles of mastication - masseter, temporalis, lateral pterygoid, and medial pterygoid - are outlined along with their origins, insertions, innervation and actions. The document also covers the positions and movements of the mandible as well as some relevant clinical considerations involving the TMJ.
This document describes the major muscles involved in mastication. There are 5 muscles that are the primary muscles of mastication - the masseter, temporalis, and medial, inferior lateral, and superior lateral pterygoid muscles. It provides details on the origin, insertion points, fiber orientation, and actions of each muscle. Additionally, it mentions some accessory muscles that can become symptomatic during temporomandibular disorders including suprahyoid, infrahyoid, and cervical muscles.
This document discusses the anatomy and functions of various muscles in the head and neck region that are relevant to complete denture construction. It describes the origins, insertions, and actions of the muscles of mastication (temporalis, masseter, lateral and medial pterygoid), tongue (genioglossus, hyoglossus), facial expression, soft palate, suprahyoid region, and pharynx. Knowledge of these muscle attachments and their roles in functions like chewing, swallowing and speech is important for determining denture borders and contours as well as jaw relation records.
The document discusses the muscles of mastication. There are 4 primary muscles - masseter, temporalis, lateral pterygoid, and medial pterygoid. These muscles develop from the first brachial arch and are innervated by the mandibular nerve. They work together to power the chewing cycle and move the mandible during opening, closing, and side-to-side motions. Secondary muscles like the digastric, mylohyoid, and geniohyoid can assist during difficult chewing. Conditions like tetanus and bruxism are also reviewed.
This document summarizes the muscles of mastication. It describes the four primary muscles - temporalis, masseter, lateral pterygoid, and medial pterygoid muscles. It discusses their embryology, blood supply, nerve innervation, actions, and clinical significance. A study found that around 26.8% of participants seeking dental care reported temporomandibular disorder pain. The muscles of mastication are important for chewing food and moving the jaw. Disorders can include pain, dysfunction, and infections or tumors in the mastication space.
The document discusses the muscles of mastication. It begins by introducing the four primary muscles - masseter, temporalis, medial pterygoid, and lateral pterygoid. For each muscle, it describes the origin, insertion, nerve supply, blood supply, actions, and clinical importance. It also briefly discusses the accessory muscles of mastication and some applied aspects like hypertrophy, bruxism, and myofascial pain dysfunction syndrome.
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
seminar 4-muscles of mastication tongue.pptxNikitaSaini11
The document provides information about the muscles of mastication, including their origins, insertions, nerve supply, actions, and classification. It discusses the primary muscles - temporalis, masseter, medial pterygoid, and lateral pterygoid - as well as secondary muscles like the digastric, mylohyoid, and geniohyoid. The muscles work together to enable movements of the jaw like opening, closing, protrusion, and lateral movements during chewing. The temporalis and masseter act as elevators while the lateral pterygoid acts as a depressor.
The muscles of mastication develop from the first pharyngeal arch and are supplied by the mandibular nerve. The four main muscles of mastication are the lateral pterygoid, medial pterygoid, masseter, and temporalis muscles. These muscles originate on bones of the skull and insert on the mandible, working in conjunction to elevate and close the mandible as well as protrude the mandible forward.
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), including its:
- Types (synovial, bicondylar, ginglymoarthroidal)
- Anatomy (bones, articular disc, ligaments, muscles)
- Histology of the articular surfaces
- Biomechanics and functions like opening and closing the mouth
- Age-related changes like flattening of bones and thinning of tissues
As we know that the muscles play an important role in stability and support of a prosthesis,hence we should be well learned about their peripheries and actions.
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.
This document discusses the muscles of mastication, including the four principal muscles - masseter, temporalis, medial pterygoid, and lateral pterygoid. It describes the origin, insertion, nerve supply, and actions of each muscle. Additionally, it mentions two accessory muscles of mastication - the buccinator and digastric muscles. The masseter, temporalis, and medial pterygoid muscles elevate the mandible, while the lateral pterygoid depresses the mandible and aids in protrusion along with the medial pterygoid.
The four main muscles of mastication are the masseter, temporalis, lateral pterygoid, and medial pterygoid muscles. These muscles work together to power the chewing cycle which involves three phases - opening, closing, and occlusion. The masseter elevates the jaw, the temporalis elevates and retracts the jaw, the lateral pterygoid depresses, protrudes and moves the jaw side to side, and the medial pterygoid elevates and protracts the jaw. A fifth muscle, the sphenomandibular muscle, is also sometimes included as it runs medial to the temporomandibular joint.
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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.
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.
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www.indiandentalacademy.com
skype:indiandentalacademy
+919248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
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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
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offering a wide range of dental certified courses in different formats.for more details please visit
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Use of modified tooth forms in complete denture occlusion / dental implant...Indian dental academy
This document discusses dental occlusion concepts and philosophies for complete dentures. It introduces key terms like physiologic occlusion and defines different occlusion schemes like balanced articulation and monoplane articulation. The document discusses advantages and disadvantages of using anatomic versus non-anatomic teeth for complete dentures. It also outlines requirements for maintaining denture stability, such as balanced occlusal contacts and control of horizontal forces. The goal of occlusion for complete dentures is to re-establish the homeostasis of the masticatory system disrupted by edentulism.
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
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This document discusses dental casting investment materials. It describes the three main types of investments - gypsum bonded, phosphate bonded, and ethyl silicate bonded investments. For gypsum bonded investments specifically, it details their classification, composition including the roles of gypsum, silica, and modifiers, setting time, normal and hygroscopic setting expansion, and thermal expansion. It provides information on how the properties of gypsum bonded investments are affected by their composition. The document serves as a comprehensive overview of dental casting investment materials.
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
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
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This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
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Muscles of mastication/ orthodontics courses in india
1. Muscles of Mastication
INDIAN DENTAL ACADEMY
Leader in continuing dental education
www.indiandentalacademy.com
www.indiandentalacademy.co
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2. Introduction
The muscles of mastication are
involved in the masticatory and
non masticatory movements of
the mandible .
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4. The masseterand temporalis are
superficially located, just deep to
the subcutaneous tissue, and can be
easily palpated.
The medial and lateral pterygoid,
however, lie more deeply and are
placed in the infratemporal fossa.
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5. MASSETER
• Quadrilateral muscle
• Covers lateral surface of mandible
coronoid process of the mandible.
• Consists of 2 portions
Origin
Superficial portion(larger)
- Lowerborderof ant. 2/3 of Zygomatic
arch
- Thick tendinous aponeurosis from the
zygomatic process of the maxilla
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6. Deep portion(smaller)
- Posterior 1/3of the
lowerborder
- Whole of the medial
surface of the
zygomatic arch
Insertion
Superficial fibres
– fibers pass downward
and backward to
insert into angle and
lowerhalf of the
lateral surface of thewww.indiandentalacademy.co
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7. Deep fibres.
- Fibers pass
downward
and forward,
to be
insertedinto
the upper
half of the
ramus and
the lateral
surface of
the coronoid
process of
the
mandible.
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8. • The deep portion of the muscle is partly
concealed, in front, by the superficial portion
• Behind , it is covered by the parotid gland.
• The fibers of the two portions are continuous at
theirinsertion.
• A portion of the parotid gland, the parotid duct,
transverse facial artery and branches of the
facial nerve lie superficially to the muscle.
Nerve supply :
Mandibularnerve via masseteric nerve that
enters its deep surface.
Arterial supply:
Masseteric branch of the maxillary artery.www.indiandentalacademy.co
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9. Action :
- Themasseter
elevates the
mandibleduring
thecentric
occlusion.
- Moves the
mandibleto the
sidein lateral
excursions,
- Retrudes the
mandiblewhen
in protrusion.
(deep fibres) www.indiandentalacademy.co
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10. Function of Masseter
Next Slide****Previous Slide****Slide avigatior
Home
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11. TemporalisTemporalis
A fan-shaped muscle covered by a fascia
sheet.
The large fan-like portion attaches to the
side of the skull and the smallertapering
portion attaches to the coronoid process
of the mandible.
It is a powerful masticatory muscle that
can easily be seen and felt during
closure of the mandible.
www.indiandentalacademy.co
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13. Origin :
- Floorof temporal fossa.
- deep surface of temporal fascia.
Insertion
fibers converge as they descend, and end in a
tendon, which passes deep to the zygomatic arch
and is inserted into the.
- Medial surface, apex, anteriorand posterior
borderof coronoid process.
- anteriorborderof the ramus of the mandible
nearly as farforward as the last molartooth.
superficial tendon - anteriorborderof coronoid.
process.
deep tendon - internal oblique line.www.indiandentalacademy.co
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15. Arterial supply :
anteriorand posteriordeep temporal arteries.
Nerve supply :
anteriorand posteriordeep temporal nerves from the
mandibulardivision of the trigeminal nerve (V)
Action :
- Elevation (bilateral)
- Retrusion (bilateral)
activated during end to end and centric occlusal biting
positions, and pulls the mandible back in retrusive.
- Ipsilateral excursion (unilateral)
- Resting tonus (bilateral)
maintains the rest position of the mandible when the
person is upright www.indiandentalacademy.co
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16. Due to the fan-shaped arrangement of the fibers of
temporalis, the pull of the muscle is a continuous
arc from the essentially vertical pull of the anterior
fibers (which elevate the mandible) to the
posteriorportion which pulls almost horizontally
and thereby retracts the mandible.
This is necessary in closing the mouth since in the
open position the head of the mandible has moved
anteriorly against the articulartubercle.
Note that the posteriorfibers of temporalis are the
only retractors of the mandible.
www.indiandentalacademy.co
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18. Temporal fascia
Thick aponeurotic sheet
that roofsover temporal
fossaand coversthe
temporalismuscle.
Superiorly attached to
superior temporal line
Inferiorly attached to
upper border of
zygomatic arch
Deep surfacegives
origin to afew fibresof
temporalis. www.indiandentalacademy.co
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19. Lateral pterygoid
It is a short, thick muscle, somewhat
conical in form, which extends almost
horizontally between the infratemporal
fossa and the condyle of the mandible
and has two heads superiorand inferior.
Only muscle of the fourmuscles of
mastication to occupy a horizontal
position.
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20. Origin : both heads
arise from sphenoid
bone.
• Upperhead (small) –
infratemporal surface
and
infratemporal crest of
greaterwing of sphe
noid bone
• Lowerhead - lateral
surface of lateral
pterygoid plate www.indiandentalacademy.co
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21. Insertion :
- Anteromedial
surface of articula
rcapsule
- Anteriorborderof
articulardisc
- Anteriorsurface of
mandibularneck
i.e. Pterygoid
fovea.
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22. Nerve supply
nerve to lateral pterygoid
Arterial supply
Pterygoid branch of the maxillary artery.
Action :
The purpose of the lateral pterygoids is to
work togetherto pull the mandible
forward ("advance" it), and to translate
the condyles (open the mouth).
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23. • Protrusion (bilateral)
Thelateral pterygoidsacting together aretheprime
protractersof themandible, moving it into a
protrusiveposition.
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24. • Depression (bilateral)
Contractions of both lateral pterygoids along
with the suprahyoid and infrahyoid muscles,
help depress oropen the mandible.
• Contralateral Excursion
(unilateral)
The lateral pterygoid can act singly to move
the mandible in lateral excursions.
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25. Medial Pterygoid
Thick, quadrilateral muscle.
This muscle mirrors the masseterin position
and action,togetherwith the masseterit
forms a "sling"around the ramus.
It is rhomboidal in shape and located deep
to the ramus of the mandible and runs
almost in the same direction.
Has small superficial head and large deep
head.
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26. Origin :
Superficial head
- Maxillary tuberosity
- Lateral surface of
pyramidal process
of palatine bone
Deep head
- Pterygoid fossa
- Medial surface of
lateral pterygoid pl
ate
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27. Insertion :
fibers pass downward,
lateral and backward,
and are inserted, by a
strong tendinous
lamina, into
the lowerand back
part of the medial
surface of the ramus
angle of the
mandible, as high
as(inferiorto) the
mandibularforamen.www.indiandentalacademy.co
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28. Arterial supply :
pterygoid branch of the maxillary
Nerve supply :
nerve to medial pterygoid
Action :
The medial pterygoid elevates and orientates the
mandible laterally during chewing in conjunction with
the masseter.
Elevation (bilateral)
The medial pterygoid acts with the masseterto
elevate.
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29. • Protrusion
(bilateral)
The insertion of the
muscle is posterior
to its origin so the
right and left
muscles aid in
protrusion.
• Contralateral
Excursion
(unilateral)
The insertion of this
muscle is also
lateral to its origin,
so the muscle fibers
www.indiandentalacademy.co
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30. Sphenomandibularis
Origin
- Sphenoid bone, behind
orbit
Insertion
- temporal crest (internal
obliqueline) of the
mandible
Most efficient asnon-
working sideelevator of
mandible
Had previously been
thought to be"medial belly
of temporalis" www.indiandentalacademy.co
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31. Zygomandibularis
Origin:
Posterior region of theorbital part of the
zygomatic boneand thesphenoid bone
Insertion :
Anterior mandibular ramus
Function:
Believed to aid in elevating themandible
www.indiandentalacademy.co
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32. Non masticatory muscles
Depressorsof themandible
Platysma
Suprahyoid muscles
Infrahyoid muscles
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33. Suprahyoid muscles
- This group of muscles is located superiorto
the hyoid bone and connects to this bone
and the skull.
- Includes the mylohyoid, geniohyoid,
stylohyoid and digastric muscles.
Infrahyoid muscles
- These muscles are often referred to as strap
muscles due to theirribbon-like appearance.
- They are located inferiorto the hyoid bone.
- These muscles anchorthe hyoid bone and
depress the hyoid and larynx during
swallowing and speaking.www.indiandentalacademy.co
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34. SUPRAHYOID MUSCLES
Muscle Origin Insertion Action
DIGASTRIC
ANTERIOR
digastric
fossa of
mandible
Intermediate
tendon at hyoid
depresses
the mandible
and raises the
hyoid bone,
steadies the
hyoid bone
during
swallowing
and speaking.
POSTERIOR
DIAGASTRIC
mastoid
notch of
temporal
bone.
Intermediate
tendon at hyoid
STYLOHYOID
Styloid
process
Hyoid elevates and
retracts the
hyoid bone,
elongating the
floorof thewww.indiandentalacademy.co
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37. STERNO –THYROID
Origin - Sternum
Insertion - Side of thyroid cartilage
Action - depresses the hyoid bone and
larynx afterit has been elevated by muscles
during swallowing and vocal movements.
THYROHYOID
Origin - oblique line of thyroid cartilage.
Insertion - Cornu and body of hyoid
Action - responsible forpreventing food from
entering the larynx during swallowing (it
pulls the larynx and hyoid bone together)..
www.indiandentalacademy.co
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38. Platysma
Subcutaneous sheet of striated muscle, located
in the superficial fascia.
Origin-fascia and skin overthe pectoralis
majorand deltoid muscles.
Insertion - inferiorborderof the mandible and
skin of the lowerface
Actions –
- tenses the skin of the neck.
-It draws the corners of the mouth inferiorly and
assists in depressing the mandible.
-one of the muscles of facial expression that we
use to express sadness, horror, or frightwww.indiandentalacademy.co
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39. Mandibular Division Of Trigeminal
Nerve (Cn-v).
All the muscles of mastication are supplied
by branches of the mandibularportion of the
trigeminal.
This nerve carries the motorroot of CN-V.
Afterpassing through the foramen ovale, its
short trunk branches immediately into
sensory and motornerves.
The Sensory Nerves include:
-InferiorAlveolar
-Lingual,
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40. - Auriculotemporal
- Buccal
The motornerves
include
- Anteriorand
posteriordeep
temporal
- Nerve to the
medial pterygoid
muscle
- Masseteric
- Nerve to the
lateral pterygoid
muscle
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42. Pterygoid venous plexus
This large venous plexus lies partly between
the lateral pterygoid and temporalis muscles
and the two pterygoid muscles.www.indiandentalacademy.co
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43. Development
The muscles of mastication arise from the
mesoderm of the mandibulararch. The
mandibulardivision of the trigeminal
nerve enters this premuscle mass before
it splits into the Temporal, Masseterand
Pterygoideus.
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44. Review of actions of the muscles
of mastication
DEPRESSION OF MANDIBLE
Gliding and hinge movements. Lateral
pterygoid aided by Suprahyoid and
Platysma.
ELEVATION OF MANDIBLE
Masseter, medial pterygoids and anterior
fibers of temporalis.
PROTRUSION OF MANDIBLE:
Lateral and medial pterygoids on both sides.
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45. RETRUSION OF MANDIBLE:
Post (horiz.) fibers of temporalis.
LATERAL MOVEMENT:
Medial and lat pterygoids on one side only
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46. Clinical considerations
The muscles of mastication are involved in the
masticatory movements of the mandible and
also the non masticatory .
In complete denture prosthodontics the non
masticatory movements and contacting of
teeth during these movements are of more
concern.
As a group they are very powerful.
Only the MASSETERinfluences the contourof
the distobuccal cornerof the buccal flange.
The magnitude of its force is felt in the molar
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47. The denture should be contoured to accommodate the
contraction of the masseteras it force the buccinator
onto the retromolarpad,otherwise it will lead to
anteriordisplacement of the denture.
The temporal muscle does not participate in biting
force when mandible is in protrusion and can be used
as a test to determine if patient is closing in centric
relation.
The muscles that protrude the mandible and move it
side to side are strongerthan the retractors.
The precise control and coordination existing
between the muscles enables them to apply powerful
force to piece of food and yet bring teeth into
occlusion without jarring,by the neuromuscular
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48. Premature contact of the teeth causes discomfort
and damage to the underlying muscles and hence
dentures should not be fitted with increased
vertical dimension,and is a common cause of
denture failure.
When vertical dimension is reduced,the muscles
lose theirpower,as they develop maximum
powerwithin a short range of vertical dimension.
In protrusion when posteriorteeth are present
the forward pull of the muscle fibres of the
pterygoids are balanced but the gradual
relaxation of the posteriorfibres of the temporalis
and masseterand anteriorteeth and vice versa.www.indiandentalacademy.co
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49. When posteriorteeth are lost,mastication is
performed on anteriorteeth,orlong period of
edentulism abnormal habits of chewing are
developed with loss of the delicate balance between
the groups of muscles and the protrusive muscles
become dominant,and leads to difficulty in recording
anteroposteriorocclusal relationship.
When the masticatory muscles try to bring the teeth
into occlusion and there are interfering inclines within
the closing and opening paths of mandibular
movement, the muscles of mastication may become
furtherirritated resulting in muscle tenderness and
muscle pain. Muscles that are irritated can affect the
"quality" of mandibularmovement, function andwww.indiandentalacademy.co
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50. The freeway space is the space between the
occlusal surfaces of the teeth when the
mandible is at rest and the muscles in a
state of minimum contraction.
When recording jaw relations the centric
relation is recorded with aid of posterior
fibres of temporalis.
The function of the muscles is not only the
mastication but also the mandibular
movements which is of importance to the
prosthodontist.
The mandible attached to the TMJis
capable of various movements aided by thewww.indiandentalacademy.co
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51. -opening mvt
-closing mvt
-shearing mvt
-lateral and chewing mvts.
Bruxism-the grinding of teeth for
nonfunctional purposes in response to an
increased tonus of the muscles of mastication.
It usually happens during sleep
Clenching- forceful clamping of jaws in static
relationship
Trismus –
Arthritis of the TMJcould affect the tone of the
lateral pterygoid muscle, the patient cannot
open the mouth. www.indiandentalacademy.co
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52. Summary
Themasticatory system isextremely
complex,primarily madeof bonesmuscles
ligamentsand teeth.
Precisemovement of themandibleby the
musculatureisrequired to movetheteeth
efficiently acrosseach other during function.
Theknowledgeof theanatomy ,physiology and
mechanicsof thismovement arebasic to
understanding thismovement.
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53. references
William’s :Grays anatomy
Chaurasia :human anatomy vol3.head and neck ,2nd
edition 1992,varghese
Grants;method of anatomy
Zarb&Bolender:Boucher’s ;prosthodontic treatment or
edentulous patients,9th
edition,CBS
Heartwell :syllabus of complete dentures,1992,4th
edition,Varghese
Jeffery P.Okeson:Management of TMJdisorders and
occlusion,4th
edition,1998Mosby
Ramfjord/Ash:Occlusion,3rd
edition,WBSaunders
www.drjimboyd.com
Federal services board review 2000 website
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