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.
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
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
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
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
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: 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
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
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
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.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
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 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
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
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
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
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 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
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
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
Optimal occlusion and muscles of mastication (2) /certified fixed orthodontic...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
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 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.
Diagnostic records /certified fixed orthodontic courses by Indian dental acad...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.
Muscle function & malocclusion /certified fixed orthodontic courses by Indian...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
Class2 malocclusion /certified fixed orthodontic courses by Indian dental aca...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 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
Muscle function in orthodontics /certified fixed orthodontic courses by Indi...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 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 is the most complex and unique joint of the body and to understand its surgical anatomy is very important in the surgical management of its 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
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.
Tmj/certified fixed orthodontic courses by Indian dental academyIndian 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
A brief ppt on stomatognathic system and its working.Function can influence the overall pattern and the relationship of parts, the very foundations of stomatognathic system.
We should do more than just analyze teeth in occlusion.
It is equally important to appreciate respiration, mastication, deglutition, speech and even maintenance of head in constant postural position.
power point has a detailed description about muscles of mastication and mechanism of action of muscles and the important facts related to muscles of mastication as well as clinical importance, pathology related to all the muscles of mastication.
Similar to Muscles of mastication/ orthodontics courses in india (20)
Opportunity for Dentists (BDS/MDS )to relocate to United kingdom -Register as a DENTAL HYGIENIST/ DENTAL THERAPIST without Board exams and after approval you can register in GDC as a DH/DT and start working as a DH/DT Immediately and get paid.
You can complete the whole process in 3-4 months.Salary range for DH/DT is around 2500-3500 Pounds per month.
Eligibility / requirements-
1. An International English Language Testing System (IELTS) certificate
at the appropriate level.(Within 2 yrs of application date )
2: A recent primary dental qualification that has been taught and examined in English..(Within 2 yrs of application date )
3: A recent pass in a language test for registration with a regulatory authority in a country where the first language is English.
If you are interested Please contact us for more details.
1ST, 2ND AND 3RD ORDER BENDS IN STANDARD EDGEWISE APPLIANCE SYSTEM /Fixed ort...Indian 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.
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.
I –Aligners are made with FDA approved transparent thermoplastic materials using 3D scanning, 3D Printing and finally Trays with Pressure vacuum formers.
Dear Doctor,
Indian Dental Academy Now offers comprehensive online Orthodontics course.
Course includes:
1.whiteboard lecture presentations
2.Case Discussions
3.with hundreds of pictures.
4.Demo on Models
5.Demo on Patients
6. subtitles in your own language
12 months unlimited access and support @350 USD only.
For Demo please visit :www.idalectures.com/preview/
For more details visit: www.idalectures.com
Please contact us for any clarifications:
idalectures@gmail.com
indiandentalacademy@gmail.com
Thanks & Regards
Indian Dental Academy
--
Indian Dental Academy
Leader in continuing dental education
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
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Cytotoxicity of silicone materials used in maxillofacial prosthesis / 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.for more details please visit
www.indiandentalacademy.com
Diagnosis and treatment planning in completely endntulous arches/dental 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
Properties of Denture base materials /rotary endodontic 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
Use of modified tooth forms in complete denture occlusion / dental implant...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 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
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
Dentalcasting alloys/certified fixed orthodontic courses by Indian dental aca...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
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Muscles of mastication/ orthodontics courses in india
1. Muscles ofMuscles of
MasticationMastication
Anatomy and Physiology.Anatomy and Physiology.
INDIAN DENTAL ACADEMY
Leader in continuing dental education
www.indiandentalacademy.com
www.indiandentalacademy.com
3. Introduction
• In general as one reads about muscles there
are five terms that are constantly seen, they
are
Origin
Insertion
Action
Nerve supply and
Blood supply
www.indiandentalacademy.com
4. Origin: it is generally considered to be the end
of the muscle that is attached to the least
movable structure.
Insertion: it is the other end of the muscle,
which is attached to the more movable
structures.
Action: it is the work that is accomplished when
the muscle fibers contract.
Terms
www.indiandentalacademy.com
5. Masticatory muscles
The muscles most immediately concerned with the
movement of the mandible in mastication and
speech are
Masseter
Temporalis
Medial pterygoid and
Lateral pterygoid
www.indiandentalacademy.com
6. • There are four pairs of muscles attached
to mandible, primarily responsible for
• Elevating
• Depressing
• Protruding
• Retruding
• Lateral movement
www.indiandentalacademy.com
7. Development
• These muscles develop from first
pharyngeal arch [mandibular]
• Thus innervated by the nerve of the
first arch, the fifth cranial nerve
[trigeminal nerve]more specifically,
by the third part of the fifth cranial
nerve; mandibular division.
www.indiandentalacademy.com
8. • Blood supply to all the muscles is
by the maxillary artery, branch of
external carotid artery.
www.indiandentalacademy.com
9. Clinical examination
• Masseter:
• It can be palpated
extra orally by placing fingers
over the lateral surfaces of the
ramus of mandible
www.indiandentalacademy.com
10. • Temporalis:
• Fingers are placed
over the patients temples to
feel the muscle.
www.indiandentalacademy.com
11. • Medial pterygoid:
• Index finger is used to
touch the medial pterygoid
muscle on the inner surface of
the ramus.
www.indiandentalacademy.com
12. • lateral pterygoid:
• The little finger is
inserted facial to the maxillary
teeth and around distal to the
pterygomaxillary, [or] hamular
notch, to palpate the muscle.
www.indiandentalacademy.com
13. • The distance between maxillary
and mandibular incisors is
measured when the patient is
instructed to open ‘all the way’.
• Normal opening in an adult is
about 35-50 mm.
• Normal lateral movement is
about 8-10 mm.
www.indiandentalacademy.com
14. Masseter muscle:
• Masseter means to chew.
• It is a quadrilateral muscle in shape.
• It is one of the outermost muscles in the
skull.
• The muscle consists of three layers,
which blend anteriorly. They are.
The superficial layer
The middle layer
The deep layer
www.indiandentalacademy.com
16. The superficial layer
• It is the largest of the three layers.
• Origin: by a thick
aponeurosis from maxillary process
of zygomatic bone and from the
anterior 2/3’rd of the inferior
border of the zygomatic arch.
• Insertion: fibers pass
downwards and backwards to
insert into the angle and lower
posterior half of the lateral surface
of the ramus
www.indiandentalacademy.com
17. The middle layer:
• Origin: arises from the medial
aspect of the anterior two thirds of
the zygomatic arch and from the
lower border of the posterior third.
• Insertion: inserts into the central
part of the mandibular ramus.
www.indiandentalacademy.com
18. The deep layer
• this layer is also called as
‘zygomaticomandibular muscle’.
• Origin: from the deep
surface of the zygomatic arch.
• Insertion: these fibers travel
downwards, into the upper part of
the mandibular ramus and into its
coronoid process.
www.indiandentalacademy.com
19. • middle and deep layers ofmasseter
referred to as ‘cruciate muscle’.
• The superficial layer is covered
externally by continuous tendinous
tissue
• During clinical palpation the most active
region of the muscle is situated near the
mandibular angle.
• The fibers of deep and superficial layers
diverge from each other at an angle of 50
degrees.
www.indiandentalacademy.com
20. Actions:
• Masseter is considered to supply
‘power’, rather than positioning.
• It elevates the mandible to occlude
the teeth in mastication.
• It has small effect in side to side
movements, protraction and
retraction
www.indiandentalacademy.com
21. Temporalis muscle:
As it is close to temples,thus the name
temporalis.
It is characterized by its fan shape and
fairly thin muscle
It covers a great part of lateral area of the
skull -the temporal fossa.
-Narrow part of parietal bone
-Great part of temporal bone
-Sphenoid bone
‘Temporal fascia’ covers the temporalis
muscle.
Temporalis muscle:
www.indiandentalacademy.com
23. • Above: the fascia is single layered. it is
attached to superior temporal line.
• Below: the fascia is two layered. one attached
to lateral side and the other to the mesial
margin of the upper border of the zygomatic
arch.
• On the lateral portion of the skull, temporalis
inserts at the level of the temporal line and
divides into 3 parts.
1. The anterior bundle
2. The intermediate bundle
3. The posterior bundle
www.indiandentalacademy.com
24. 1. The anterior bundle:
• Origin: the upper extremity
attaches to the temporal bone.
• Insertion: the lower extremity
inserts onto the apex of the
coronoid process of the mandible
and to the anterior border of the
ramus.
www.indiandentalacademy.com
25. • This group is active at the closing phase and
inactive at the opening phase.
• No activity is seen during mandibular depression,
expect during maximum opening [or] opening
against resistance.
• This action prevents the accidental dislodgement
of the condyles out of the articular fossa if the
resistance is suddenly removed.
• This bundle is more active in mandibular elevation,
swallowing and rest position.
• This bundle is frequently adapted to crush and
chew food close to centric occlusion. No activity
at normal protrusive movements
www.indiandentalacademy.com
26. 2. The intermediate bundle.
• Vigorous action of this bundle
has been observed during
protrusive movements.
www.indiandentalacademy.com
27. 3. The posterior bundle.
• Anatomically posterior bundle is
oriented to elevate the mandible
• They function primarily as
mandibular retractors [or]
positioners.
• These remain inactive during
mandibular depression and
protrusion
www.indiandentalacademy.com
28. Nerve supply:
• It is supplied by the deep
temporal branches of the
anterior trunk of the
mandibular nerve.
www.indiandentalacademy.com
29. Action:
• It elevates the mandible and thus
closes the mouth and approximates
the teeth.
• Thus it acts as a postioner.
• This movement requires the
upward pull of the anterior fiber
and backward pull of the posterior
fibers.
• Because the head of the condyles
rests on the articular eminence
when the mouth is open.
• It is active in forcible elevation.
www.indiandentalacademy.com
30. Medial pterygoid:
• Pterygoid means wing like.
• It is a thick, quadrilateral
muscle.
• It is located on the internal
surface of the ramus.
• It lies along the length of the
masseter muscle.
• It is less potent than masseter.
www.indiandentalacademy.com
32. Origin:
• It originates from the medial
surface of the lateral pterygoid
plate and from the grooved surface
of the pyramidal process of the
palatine bone.
• A more superficial slip arises from
the lateral surface of the pyramidal
process and maxillary tuberosity.
www.indiandentalacademy.com
33. Insertion:
• the fibers descend postero
laterally and are attached by a
strong tendinous lamina to
postero inferior part of the
medial surfaces of the ramus
and angle as high as the
mandibular foramen and
almost as far forward as the
mylohyoid groove.
www.indiandentalacademy.com
35. Lateral pterygoid:
• It is a short, thick muscle.
• It is also referred to as
“sphenomeniscus muscle”.
• It has two heads
• Upper head- smaller.
• Lower head- larger.
• it is deeply located in the
infratempoal fossa.
www.indiandentalacademy.com
37. Origin
• Lower head: the larger one in the
lower position has its origin in the
external surface of the lateral
pterygoid lamina.
• Upper head: the smaller one in the
upper position originates from the
infratemporal surface of the
sphenoid bone.
www.indiandentalacademy.com
38. Insertion
• The two separate bellies are
oriented posterior where they fuse
at the level of the
temporomandibular joint.
• The most superior fibers of the
upper belly are directly connected
to the anterior surface of the
articular capsule.
• Thus are indirectly attached to
the anterior portion of the condylar
neck.
www.indiandentalacademy.com
39. Action
• It assists in opening the mouth by pulling forward the condyles and the articular disk.
• Slow elongation of the lateral pterygoid is seen during the closure of the mouth,
backward gliding of articular disc and condyle.
• Ipsilateral medial and lateral pterygoid advance the condyle of that side so that jaw
rotates about a vertical axis through opposite condyle.
• When both medial and lateral pterygoid act together they protrude the mandible, so
that the lower incisors project in front of upper.
• Upper head is involved mainly in chewing.
• Lower head is involved in protrusion, but the primary function is to move the disk and
condyle head forward.
• No activity is seen during closing and swallowing.
• The lower belly is synergistic with suprahyoid muscle during protrusive and opening
movements of mandible.
• It is antagonist to suprahyoid muscle during closure movement in mastication and
tooth clenching.
• This bundle acts as a antigravity muscle during certain swallowing movements.
• This muscle is responsible for opening of mandible.
• External pterygoid is active only at uncontrolled opening of mouth.
• This is used to place the condyles in a favorable position as the mandible progresses
in its depressing movement as this muscle is not essential for opening the
mouth,stabalizing force of the external pterygoid is used necessary to prevent the
dislodgement of the mandible during the masticatory function.
www.indiandentalacademy.com
40. THE ACCESSORY MUSCLES
OF MASTICATION
1. Suprahyoid group-
DIGASTRIC
MYLOHYOID
GENIOHYOID
STYLOHYOID
2. Infra hyoid group-
STERNOHYOID
THROHYOID
OMOHYOID
STERNOTHYROID
www.indiandentalacademy.com
41. DIGASTRIC
• Origin: There are muscle fibers at either end
with a collagenous tendon at the middle.
• One end: digastric notch just medial to the
mastoid process behind the ear.
• Other end: digastric fossa on the inferior
surface of the mandible at the midline.
• Action: is two fold.
• By contracting, it can create a backward pull on
the mandible. When the jaws are clenched.
Contraction of the muscle elevates the hyoid
bone, thus helps in the pulling the mandible
downwards.
• Nerve supply
• Anterior belly by the trigeminal nerve.
• Posterior belly by the facial nerve.
www.indiandentalacademy.com
42. MYLOHYOID
• The floor of the mouth is formed by
the mylohyoid muscle.
• Origin: from the mylohyoid line on
the medial surface of the mandible.
• Insertion: to the hyoid bone.
• Nerve supply: mylohyoid branch of
the trigeminal nerve.
• Blood supply: branch of the inferior
alveolar artery.
www.indiandentalacademy.com
43. GENIHYOID
• Origin: inferior genial tubercle
or mental spine on the lingual
surface of the mandible.
• Insertion: hyoid bone.
• Action: depresses the mandible.
• Nerve supply: C1.
• Blood supply: lingual artery.
www.indiandentalacademy.com
44. INFRA HYOID GROUP
• OMOHYOID
• It has an inferior belly, common tendon and
superior belly.
• Arises from the inferior belly and inserted
through superior belly.
• Origin: upper border of the scapula.
• Insertion: lower border of the body of hyoid
bone lateral to sternohyoid.
• Action: depresses hyoid bone ,fixes the hyoid in
mandibular depression.
• Nerve supply: C2 and C3.
• Blood supply: superior thyroid arteries.
www.indiandentalacademy.com
45. STERNOHYOID
• Origin: posterior surface of the
manubrium sterni.
• Insertion: medial part of the lower
border of the hyoid bone.
• Nerve supply: C2 and C3.
• Action: depresses the hyoid,fixes
hyoid in mandibular depression.
www.indiandentalacademy.com
46. STERNOTHYROID
• Origin: posterior surface of the
manubrium sterni.
• Insertion: thyroid cartilage.
• Action: depresses the larynx.
• Nerve supply: C2 and C3.
• Blood supply: superior thyroid
artery.
www.indiandentalacademy.com
47. THYROHYOID
• Origin: oblique line of the thyroid
cartilage.
• Insertion: hyoid bone.
• Action: depresses the hyoid and
elevates the larynx.
• Nerve supply: C1through
hypoglossal.
• Blood supply: superior thyroid
artery.
www.indiandentalacademy.com
48. BUCCINATOR
• Origin: it is a wide muscle that arises from a horse
shoe shaped line along the outer surfaces of the
maxillary and mandibular alveolar processes in the
area of the molar teeth.
• It originates from pterygomandibular ligament.
• Buccinator fibers arising from the mandible follow
the external oblique line to the mesial aspect of the
first molar and ascend slightly towards the corner
of mouth.
www.indiandentalacademy.com
49. Insertion
• Some fibers insert into the
mucous membrane of cheek and
modiolus.
• Remaining fibers enter the upper
and lower lips to become a part
of the orbicularis oris muscle.
www.indiandentalacademy.com
50. Action
• It pulls the corners of the mouth laterally
and posteriorly.
• Major function is to keep the cheeks taut.
• If it were not so, when jaw closes, the
cheeks collapse and be caught between the
teeth. This is seen in senile patients or
individuals with facial paralysis.
• This muscle helps in deglutition.
• Provides support and mobility for the soft
tissues of cheek.
www.indiandentalacademy.com
52. Masseter muscle:
• The contraction of masseter muscle pushes the buccinator
fibers against the denture border. For this reason, the
borders must converge rapidly towards the retro-molar pad.
• At the time of preliminary impression is made, while the
compound on the borders of the impression tray in this
region is still soft, considerable downward force should be
exerted on the lower jaw by dentist.
• Now the patient is attempting to counteract this downward
pressure which will cause the masseter muscle to contract.
• This forces the softened compound away from impingement
in this region.
• Thus the denture border can also be contoured to
accommodate this action. If this is not done the muscle
interaction will displace the mandibular denture and force it
in an anterior direction
www.indiandentalacademy.com
53. Temporalis muscle
• Temporalis does not participate in biting
force when the mandible is in
protrusion.
• Therefore the action of this muscle is
sometimes used as a test to determine
whether the patient is closing in centric
relation.
• When the mandible is in protrusion, no
bulging can be felt with fingers on the
side of the head.
• This muscle is more sensitive to occlusal
interferences than any muscle.
www.indiandentalacademy.com
54. Mylohyoid muscle
• It elevates the hyoid bone, the tongue and the
membranous floor of the mouth during
swallowing.
• If the denture flange is extended below and
under the mylohyoid line, it will impinge on the
mylohyoid muscle and can affect its action
adversely.
• Thus the action of the muscle can unseat the
denture.
• As the fibers are directed downwards, the
denture flange can extend below but not under
the mylohyoid line. This places the inferior
border of the denture in a compatible position
with tongue.
www.indiandentalacademy.com
55. Buccinator muscle
• The action of buccinator muscle does not
directly dislodge the denture because the muscle
fibers contract in a line parallel to the plane of
occlusion.
• When masseter is activated, it pushes the
buccinator medially against the denture border
in the area of retro molar pad.
• This is a dislodging force and the denture base
should be contoured to accommodate this
interaction between the buccinator and
masseter.
• This is termed as` masseter groove’.
• The position of attachment of buccinator muscle
in the upper jaw determines the vertical height
of the disto buccal flange of the maxillary
denture.
www.indiandentalacademy.com
56. References
• Gray’s anatomy -
• Anatomy and physiology - Rod.R.Steley.
• Anatomy of orofacial structures - Brand – 6th edition.
• Occlusion - Major Ash.
• Occlusion principles and concepts - José dos Santos -
2’nd edition.
• Text book of complete dentures - Rahn. -5’Th edition.
• Boucher’s prosthodontic treatment for edentulous
patients – 10’Th edition.
• Fundamentals fixed prosthodontics -
H.T.Shillingburg.Jr
www.indiandentalacademy.com
57. For more details please visit
www.indiandentalacademy.com
www.indiandentalacademy.com
Editor's Notes
Lower head: the larger one in the lower position has its origin in the external surface of the lateral pterygoid lamina