SlideShare a Scribd company logo
Role of Facial Muscles in Complete Denture
Prosthesis
A REVIEW ARTICLE
Journal of indian Dental association
Dr. Anindita Majumder1, Prof. (Dr.) Sugata Mukherjee2, Prof.
(Dr.) Tapan Kumar Giri3, Dr Ashish Barui1, Dr Dibyatanu
Majumder1
CONTENT
• Introduction
• Development of facial muscles
• Facial muscles
Muscles of mastication and its accessory muscles
Muscles of facial expression
• Role of facial muscles in complete denture prosthesis
• Conclusion
• References
Introduction
• Musculature is involved directly in several
important phases of complete dentures.
• They exert a direct influence upon the peripheral
extensions, shape and thickness of denture bases,
position of teeth both horizontally and vertically and
facial appearances.
• In addition they are active during mastication,
speech and deglutition.
• The muscles that are intimately involved with
prosthedontics are skeletal muscles.
• In the majority of skeletal muscles ,the origins and
insertions are in bone.
• However, many skeletal muscles involved in
complete denture construction have a bony origin but
insert into an aponeurosis, a raphe, or another muscle.
• Following group of muscles are studied in relation
to complete dentures:
Muscles of mastication and its accessory
muscles
Muscles of facial expression
Development of facial muscles
Myology:
Defionition: GPT9
MUSCLES OF MASTICATION
 TEMPORALIS
 MEDIAL PTERYGOID
 LATERAL PTERYGOID
 MASSETER
MUSCLES OF MASTICATION
ACCESSORY MUSCLES OF MASTICATION
 DIGASTRIC
 MYLOHYOID
 GENIOHYOID
 INFRAHYOID
DIGASTRIC
MYLOHYOID
GENIOHYOID
INFRAHYOID
MUSCLES OF FACIAL EXPRESSION
• These muscles generally donot insert into the bone.
They are subcutaneous in position and produces
wrinkles or fold in the skin when they contract.
• They are responsible for expression of different
emotions of an individual.
• Also called mimetic muscles.
MUSCLES OF FACIAL EXPRESSION
MUSCLES OF FACIAL EXPRESSION
Role of facial muscles in complete denture
prosthesis
• Buccinator, Orbicularis oris, Incisivus superioris and
inferioris and Bucco- labial groups are of main concern to
the Prosthodontist.
• Orbicularis oris - This muscles rest on the labial
flange and gingival third of anterior teeth. Its tone is
determined by the support it receives.
• Buccinator - In the lower jaw buccinator muscles
becomes part of denture bearing area
• the action of buccinator does not dislodge the denture
directly because the muscle fibres contract in a line
parallel to plane of occlusion, but they are at right
angle to the fibres of masseter.
Masseteric Groove :
• In complete denture prosthesis, it helps in retention of
maxillary denture.
• Buccal surface of the maxillary denture which
incline inward from the border towards the teeth, is in
direct contact with the lateral forces from the
contracting buccinator muscle.
• Modiolus - (LATIN, “A HUB OF AWHEEL”) - It is a
fibro muscular mass formed by the convergence of
various muscles towards a focus just lateral to the
buccal angle
• It is formed by nine muscles. They are divided into
two groups
• 1. Cruciate modiolar muscles - Zygomaticus major,
Levator anguli oris, Depressor anguli oris, Platysma
pars modiolaris.
• 2. Transverse muscles - Buccinator, Risorius,
Orbicularis oris, Incisivus superior & inferior.
Prosthetic significance :
• Border molding: The functional movements are
made during the border moulding procedure by
holding the modiolus with thumb and index finger.
• It helps in establishing the height of occlusal plane
of occlusal rim
Influence of muscles of facial expression on the borders of
maxillary dentures :
• Labial flange of the denture - lies in the labial vestibule
area extending from buccal frenum in the canine region of
one side to the other side.
• The main muscle of the lip is orbicularis oris, which
forms the outer surface of labial vestibule. Its tone
depends on the support it receives from flange and
position of the teeth
Buccal flange of the denture –
• It lies in the buccal vestibule extending from the
buccal frenum to hamular notch
• It is in relation with three muscles
• 1. Levator anguli oris – which lies beneath
the frenum and affects its position.
• 2. Orbicularis oris – which pulls the
frenum forward.
• 3. Buccinator – pulls it back.
• Buccal vestibule –
• Width of the vestibule is influenced by the action of
buccinator. Distobuccal end of flange is affected by
the masseter and coronoid process.
• Hamular notch -
• area is influenced by action of buccinator and suprior
constrictor into pterygomandibular raphe. When the
mouth is open wide, pterygomandibular raphe
becomes taut and pulled forward and overextension
of the denture may traumatise the tissue
• Influence of muscles of facial expression on the
borders of mandibular dentures –
• Labial frenum :
• It contains a band of fibrous connective tissue that
helps to attach to orbicularis oris.
• Hence this frenum is active and proper relief must be
given to permit its movement.
Orbicularis oris :
• also influences the flange thickness.
• When the mouth is open wide it becomes stretched
narrowing the sulcus and if the flanges are thick it
will displace the denture.
• Similarly flange thickness would affect the lip
support and aesthetics.
• Mentalis
• elevates the skin of the chin and the lip outward. It
renders the vestibule shallow
• Buccal flange of the denture –
• Denture should completely cover the buccal shelf
despite the fact that it rest on buccinator because
fibres of buccinator runs parallel to the base and it
contract parallel to the border and not perpendicular
to it
• Distobuccal area of the vestibule is influenced by the
action of masseter which press inward against the
buccinator, thereby reducing space in that area
• Distal extension of the denture base is up to the
retromolar pad , which is lined by thin non keratinised
epithelium and sub-mucosa containing glandular
tissues, fibres of the temporalis, attachments of the
buccinator and superior constrictor in the
pterygomandibular raphe.
• When the patient opens the mouth, the
pterygomandibular raphe is pull forward and
overextension of denture base may cause dislodgement
of the denture
CONCLUSION
• Successful denture construction and comfortable
wearing of the prosthesis is depended on various
factors but amongst all, role of muscles are influential
one, and facial muscles are important for coordination
between prosthesis performance and facial expression
of emotion. Their action must be understood and
recorded at all step of fabrication of prosthesis
REFERENCES
• 1. O. Rahn, Charles M. Heartwell. Textbook of Complete
Dentures. 5th Edition, BC Decker, 2002.
• 2. Debasis Pramanick. Principles of Physiology. 5th Edition.
Jaypee. 2015.
• 3. A. K. Dutta. Essentials of Human Anatomy – Head and
Neck. 6th Edition. Current Books International.
• 4. George A. Zarb, Charles L. Bolender, Steven Eckert,
Rhonda Jacob, Aaron Fenton, Regina Mericske-Stern.
Bouche’s Prosthodontic Treatment for Edentulous Patients. 9th
and 12th Edition. Elsevier.
• 5. Martone A. L. The Phenomenon of Function Of Complete
Denture Prosthodontics. J Prosthet Dent, 1962; 12(6): 1020-
1041.
• 6. Beresin VE, Schiesser FJ. The Neutral Zone in Complete
Denture. 2006, 95(2): 93-100.
Role of facial muscles  in complete denture  prosthesis

More Related Content

What's hot

Luting agents used in prosthodontics
Luting agents used in prosthodonticsLuting agents used in prosthodontics
Luting agents used in prosthodontics
aruncs92
 
posterior palatal seal
 posterior palatal seal posterior palatal seal
posterior palatal sealParth Thakkar
 
impression techniques of complete denture
impression techniques of complete dentureimpression techniques of complete denture
impression techniques of complete dentureakanksha arya
 
Soft liners and tissue conditioners
Soft liners and tissue conditionersSoft liners and tissue conditioners
Soft liners and tissue conditioners
DHANANJAYSHETH1
 
Neutral zone in complete dentures
Neutral zone in complete denturesNeutral zone in complete dentures
Neutral zone in complete dentures
DR PAAVANA
 
Lingualized occlusion in rdp
Lingualized occlusion in rdpLingualized occlusion in rdp
Lingualized occlusion in rdp
Dr Mujtaba Ashraf
 
Prosthodontics - realeff relevance in complete denture
Prosthodontics - realeff relevance in complete dentureProsthodontics - realeff relevance in complete denture
Prosthodontics - realeff relevance in complete denture
KIIT ,BHUBANESWAR
 
hard and soft palate in prosthodontics
 hard and soft palate in prosthodontics hard and soft palate in prosthodontics
hard and soft palate in prosthodontics
madhushreepatil5
 
Stability in complete denture
Stability in complete dentureStability in complete denture
Stability in complete denture
Dr Mujtaba Ashraf
 
theories of impression making in complete denture
theories of impression making in complete denturetheories of impression making in complete denture
theories of impression making in complete denture
dipalmawani91
 
Die materials and die systems
Die materials and die systemsDie materials and die systems
Die materials and die systems
smidsprostho
 
Journal Club for prosthodontics
Journal Club for prosthodonticsJournal Club for prosthodontics
Journal Club for prosthodontics
Dr Mujtaba Ashraf
 
Horizontal Jaw Relation
Horizontal Jaw RelationHorizontal Jaw Relation
Horizontal Jaw Relation
Dr. Anshul Sahu
 
Primary impression
Primary impressionPrimary impression
Primary impression
Talal Al-Dham
 
Resisual Ridge Resorption
Resisual Ridge ResorptionResisual Ridge Resorption
Resisual Ridge Resorption
Jehan Dordi
 
Occlusion In Fixed Partial Denture
Occlusion In Fixed Partial DentureOcclusion In Fixed Partial Denture
Occlusion In Fixed Partial Denture
Self employed
 
Relining and rebasing of complete dentures
Relining and rebasing of complete denturesRelining and rebasing of complete dentures
Relining and rebasing of complete dentures
Ramesh Maharjan
 
Muscles surrounding Complete Denture
Muscles surrounding Complete DentureMuscles surrounding Complete Denture
Muscles surrounding Complete Denture
Naveed AnJum
 
Ligaplants, the next‑generation prosthodontic implants
Ligaplants, the next‑generation prosthodontic implantsLigaplants, the next‑generation prosthodontic implants
Ligaplants, the next‑generation prosthodontic implants
Nishu Priya
 
Anatomical Landmarks of Mandible
Anatomical Landmarks of MandibleAnatomical Landmarks of Mandible
Anatomical Landmarks of Mandible
Sabnoor Aujla
 

What's hot (20)

Luting agents used in prosthodontics
Luting agents used in prosthodonticsLuting agents used in prosthodontics
Luting agents used in prosthodontics
 
posterior palatal seal
 posterior palatal seal posterior palatal seal
posterior palatal seal
 
impression techniques of complete denture
impression techniques of complete dentureimpression techniques of complete denture
impression techniques of complete denture
 
Soft liners and tissue conditioners
Soft liners and tissue conditionersSoft liners and tissue conditioners
Soft liners and tissue conditioners
 
Neutral zone in complete dentures
Neutral zone in complete denturesNeutral zone in complete dentures
Neutral zone in complete dentures
 
Lingualized occlusion in rdp
Lingualized occlusion in rdpLingualized occlusion in rdp
Lingualized occlusion in rdp
 
Prosthodontics - realeff relevance in complete denture
Prosthodontics - realeff relevance in complete dentureProsthodontics - realeff relevance in complete denture
Prosthodontics - realeff relevance in complete denture
 
hard and soft palate in prosthodontics
 hard and soft palate in prosthodontics hard and soft palate in prosthodontics
hard and soft palate in prosthodontics
 
Stability in complete denture
Stability in complete dentureStability in complete denture
Stability in complete denture
 
theories of impression making in complete denture
theories of impression making in complete denturetheories of impression making in complete denture
theories of impression making in complete denture
 
Die materials and die systems
Die materials and die systemsDie materials and die systems
Die materials and die systems
 
Journal Club for prosthodontics
Journal Club for prosthodonticsJournal Club for prosthodontics
Journal Club for prosthodontics
 
Horizontal Jaw Relation
Horizontal Jaw RelationHorizontal Jaw Relation
Horizontal Jaw Relation
 
Primary impression
Primary impressionPrimary impression
Primary impression
 
Resisual Ridge Resorption
Resisual Ridge ResorptionResisual Ridge Resorption
Resisual Ridge Resorption
 
Occlusion In Fixed Partial Denture
Occlusion In Fixed Partial DentureOcclusion In Fixed Partial Denture
Occlusion In Fixed Partial Denture
 
Relining and rebasing of complete dentures
Relining and rebasing of complete denturesRelining and rebasing of complete dentures
Relining and rebasing of complete dentures
 
Muscles surrounding Complete Denture
Muscles surrounding Complete DentureMuscles surrounding Complete Denture
Muscles surrounding Complete Denture
 
Ligaplants, the next‑generation prosthodontic implants
Ligaplants, the next‑generation prosthodontic implantsLigaplants, the next‑generation prosthodontic implants
Ligaplants, the next‑generation prosthodontic implants
 
Anatomical Landmarks of Mandible
Anatomical Landmarks of MandibleAnatomical Landmarks of Mandible
Anatomical Landmarks of Mandible
 

Similar to Role of facial muscles in complete denture prosthesis

Stability in complete dentures
Stability in complete denturesStability in complete dentures
Stability in complete dentures
NikitaChhabariya
 
Stomatognathic system
Stomatognathic systemStomatognathic system
Stomatognathic systemEnosh Steward
 
New Microsoft PowerPoint Presentation.pptx
New Microsoft PowerPoint Presentation.pptxNew Microsoft PowerPoint Presentation.pptx
New Microsoft PowerPoint Presentation.pptx
malti19
 
Mastication, orientatory lines and dental xray
Mastication, orientatory lines and dental xrayMastication, orientatory lines and dental xray
Mastication, orientatory lines and dental xray
KarolinaSczkowska2
 
Landmarks of mandible
Landmarks of mandible Landmarks of mandible
Landmarks of mandible
Dr. Khushbu Samani
 
4 a - Introduction - jaw relation
4 a - Introduction - jaw relation4 a - Introduction - jaw relation
4 a - Introduction - jaw relation
AmalKaddah1
 
Jaw Relation Record - introduction jaw relation
Jaw Relation Record  - introduction jaw relation Jaw Relation Record  - introduction jaw relation
Jaw Relation Record - introduction jaw relation
Amal Kaddah
 
Mandibular anatomical landmarks
Mandibular anatomical landmarksMandibular anatomical landmarks
Mandibular anatomical landmarks
Nishu Priya
 
Conservative prosthodontic procedures to improve mandibular denture stability...
Conservative prosthodontic procedures to improve mandibular denture stability...Conservative prosthodontic procedures to improve mandibular denture stability...
Conservative prosthodontic procedures to improve mandibular denture stability...
Aswati Soman
 
02 occlusion in prosthodontics. balanced occlusion
02 occlusion in prosthodontics. balanced occlusion02 occlusion in prosthodontics. balanced occlusion
02 occlusion in prosthodontics. balanced occlusion
Amal Kaddah
 
Anatomical landmarks for edentulous patients and facial landmarks
Anatomical landmarks for edentulous patients and facial landmarksAnatomical landmarks for edentulous patients and facial landmarks
Anatomical landmarks for edentulous patients and facial landmarks
Mohammed Aziz
 
Myology related to complete denture.pdf
Myology related to 
 complete denture.pdfMyology related to 
 complete denture.pdf
Myology related to complete denture.pdf
Kirkuk University
 
Forces of occlusion.ppt
Forces of occlusion.pptForces of occlusion.ppt
Forces of occlusion.ppt
Maher Fouda
 
OCCLUSION (Seminar).doc
OCCLUSION (Seminar).docOCCLUSION (Seminar).doc
OCCLUSION (Seminar).doc
ajaymohan79
 
Stability/ dental implant courses
Stability/ dental implant coursesStability/ dental implant courses
Stability/ dental implant courses
Indian dental academy
 
Stability in complete dentures
Stability in complete denturesStability in complete dentures
Stability in complete dentures
Priyam Javed
 
02- Occlusion in prosthodontics. Balanced occlusion
02- Occlusion in prosthodontics. Balanced occlusion02- Occlusion in prosthodontics. Balanced occlusion
02- Occlusion in prosthodontics. Balanced occlusion
Amal Kaddah
 
Growth and development of mandible / dental crown & bridge courses
Growth and development of mandible / dental crown & bridge coursesGrowth and development of mandible / dental crown & bridge courses
Growth and development of mandible / dental crown & bridge courses
Indian dental academy
 
Stability in complete dentures
Stability in complete denturesStability in complete dentures
Stability in complete dentureszainab khan
 
Growth and development of mandible/dental implant courses
Growth and development of mandible/dental implant coursesGrowth and development of mandible/dental implant courses
Growth and development of mandible/dental implant courses
Indian dental academy
 

Similar to Role of facial muscles in complete denture prosthesis (20)

Stability in complete dentures
Stability in complete denturesStability in complete dentures
Stability in complete dentures
 
Stomatognathic system
Stomatognathic systemStomatognathic system
Stomatognathic system
 
New Microsoft PowerPoint Presentation.pptx
New Microsoft PowerPoint Presentation.pptxNew Microsoft PowerPoint Presentation.pptx
New Microsoft PowerPoint Presentation.pptx
 
Mastication, orientatory lines and dental xray
Mastication, orientatory lines and dental xrayMastication, orientatory lines and dental xray
Mastication, orientatory lines and dental xray
 
Landmarks of mandible
Landmarks of mandible Landmarks of mandible
Landmarks of mandible
 
4 a - Introduction - jaw relation
4 a - Introduction - jaw relation4 a - Introduction - jaw relation
4 a - Introduction - jaw relation
 
Jaw Relation Record - introduction jaw relation
Jaw Relation Record  - introduction jaw relation Jaw Relation Record  - introduction jaw relation
Jaw Relation Record - introduction jaw relation
 
Mandibular anatomical landmarks
Mandibular anatomical landmarksMandibular anatomical landmarks
Mandibular anatomical landmarks
 
Conservative prosthodontic procedures to improve mandibular denture stability...
Conservative prosthodontic procedures to improve mandibular denture stability...Conservative prosthodontic procedures to improve mandibular denture stability...
Conservative prosthodontic procedures to improve mandibular denture stability...
 
02 occlusion in prosthodontics. balanced occlusion
02 occlusion in prosthodontics. balanced occlusion02 occlusion in prosthodontics. balanced occlusion
02 occlusion in prosthodontics. balanced occlusion
 
Anatomical landmarks for edentulous patients and facial landmarks
Anatomical landmarks for edentulous patients and facial landmarksAnatomical landmarks for edentulous patients and facial landmarks
Anatomical landmarks for edentulous patients and facial landmarks
 
Myology related to complete denture.pdf
Myology related to 
 complete denture.pdfMyology related to 
 complete denture.pdf
Myology related to complete denture.pdf
 
Forces of occlusion.ppt
Forces of occlusion.pptForces of occlusion.ppt
Forces of occlusion.ppt
 
OCCLUSION (Seminar).doc
OCCLUSION (Seminar).docOCCLUSION (Seminar).doc
OCCLUSION (Seminar).doc
 
Stability/ dental implant courses
Stability/ dental implant coursesStability/ dental implant courses
Stability/ dental implant courses
 
Stability in complete dentures
Stability in complete denturesStability in complete dentures
Stability in complete dentures
 
02- Occlusion in prosthodontics. Balanced occlusion
02- Occlusion in prosthodontics. Balanced occlusion02- Occlusion in prosthodontics. Balanced occlusion
02- Occlusion in prosthodontics. Balanced occlusion
 
Growth and development of mandible / dental crown & bridge courses
Growth and development of mandible / dental crown & bridge coursesGrowth and development of mandible / dental crown & bridge courses
Growth and development of mandible / dental crown & bridge courses
 
Stability in complete dentures
Stability in complete denturesStability in complete dentures
Stability in complete dentures
 
Growth and development of mandible/dental implant courses
Growth and development of mandible/dental implant coursesGrowth and development of mandible/dental implant courses
Growth and development of mandible/dental implant courses
 

More from Ravi banavathu

Management of temporomandibular disorders
Management of temporomandibular disordersManagement of temporomandibular disorders
Management of temporomandibular disorders
Ravi banavathu
 
Dental Implant failures
Dental Implant failuresDental Implant failures
Dental Implant failures
Ravi banavathu
 
Complete denture case history
Complete denture case historyComplete denture case history
Complete denture case history
Ravi banavathu
 
Orientation jaw relation
Orientation jaw relationOrientation jaw relation
Orientation jaw relation
Ravi banavathu
 
Facial nerve palsy
Facial nerve palsyFacial nerve palsy
Facial nerve palsy
Ravi banavathu
 
Development of salivary glands , saliva and its role in prosthodontics
Development of salivary glands , saliva and its role in prosthodonticsDevelopment of salivary glands , saliva and its role in prosthodontics
Development of salivary glands , saliva and its role in prosthodontics
Ravi banavathu
 
Temporomandibular joint development and applied aspects
Temporomandibular joint development and applied aspectsTemporomandibular joint development and applied aspects
Temporomandibular joint development and applied aspects
Ravi banavathu
 
Calcium metabolism
Calcium metabolismCalcium metabolism
Calcium metabolism
Ravi banavathu
 
Silver nanoparticle incorporation effect on
Silver nanoparticle incorporation effect onSilver nanoparticle incorporation effect on
Silver nanoparticle incorporation effect on
Ravi banavathu
 

More from Ravi banavathu (9)

Management of temporomandibular disorders
Management of temporomandibular disordersManagement of temporomandibular disorders
Management of temporomandibular disorders
 
Dental Implant failures
Dental Implant failuresDental Implant failures
Dental Implant failures
 
Complete denture case history
Complete denture case historyComplete denture case history
Complete denture case history
 
Orientation jaw relation
Orientation jaw relationOrientation jaw relation
Orientation jaw relation
 
Facial nerve palsy
Facial nerve palsyFacial nerve palsy
Facial nerve palsy
 
Development of salivary glands , saliva and its role in prosthodontics
Development of salivary glands , saliva and its role in prosthodonticsDevelopment of salivary glands , saliva and its role in prosthodontics
Development of salivary glands , saliva and its role in prosthodontics
 
Temporomandibular joint development and applied aspects
Temporomandibular joint development and applied aspectsTemporomandibular joint development and applied aspects
Temporomandibular joint development and applied aspects
 
Calcium metabolism
Calcium metabolismCalcium metabolism
Calcium metabolism
 
Silver nanoparticle incorporation effect on
Silver nanoparticle incorporation effect onSilver nanoparticle incorporation effect on
Silver nanoparticle incorporation effect on
 

Recently uploaded

CLASS 11 CBSE B.St Project AIDS TO TRADE - INSURANCE
CLASS 11 CBSE B.St Project AIDS TO TRADE - INSURANCECLASS 11 CBSE B.St Project AIDS TO TRADE - INSURANCE
CLASS 11 CBSE B.St Project AIDS TO TRADE - INSURANCE
BhavyaRajput3
 
Language Across the Curriculm LAC B.Ed.
Language Across the  Curriculm LAC B.Ed.Language Across the  Curriculm LAC B.Ed.
Language Across the Curriculm LAC B.Ed.
Atul Kumar Singh
 
Instructions for Submissions thorugh G- Classroom.pptx
Instructions for Submissions thorugh G- Classroom.pptxInstructions for Submissions thorugh G- Classroom.pptx
Instructions for Submissions thorugh G- Classroom.pptx
Jheel Barad
 
Phrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXX
Phrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXXPhrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXX
Phrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXX
MIRIAMSALINAS13
 
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
siemaillard
 
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
siemaillard
 
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdf
Welcome to TechSoup   New Member Orientation and Q&A (May 2024).pdfWelcome to TechSoup   New Member Orientation and Q&A (May 2024).pdf
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdf
TechSoup
 
The geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideasThe geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideas
GeoBlogs
 
1.4 modern child centered education - mahatma gandhi-2.pptx
1.4 modern child centered education - mahatma gandhi-2.pptx1.4 modern child centered education - mahatma gandhi-2.pptx
1.4 modern child centered education - mahatma gandhi-2.pptx
JosvitaDsouza2
 
The Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdfThe Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdf
kaushalkr1407
 
How to Make a Field invisible in Odoo 17
How to Make a Field invisible in Odoo 17How to Make a Field invisible in Odoo 17
How to Make a Field invisible in Odoo 17
Celine George
 
Model Attribute Check Company Auto Property
Model Attribute  Check Company Auto PropertyModel Attribute  Check Company Auto Property
Model Attribute Check Company Auto Property
Celine George
 
Unit 8 - Information and Communication Technology (Paper I).pdf
Unit 8 - Information and Communication Technology (Paper I).pdfUnit 8 - Information and Communication Technology (Paper I).pdf
Unit 8 - Information and Communication Technology (Paper I).pdf
Thiyagu K
 
The French Revolution Class 9 Study Material pdf free download
The French Revolution Class 9 Study Material pdf free downloadThe French Revolution Class 9 Study Material pdf free download
The French Revolution Class 9 Study Material pdf free download
Vivekanand Anglo Vedic Academy
 
Cambridge International AS A Level Biology Coursebook - EBook (MaryFosbery J...
Cambridge International AS  A Level Biology Coursebook - EBook (MaryFosbery J...Cambridge International AS  A Level Biology Coursebook - EBook (MaryFosbery J...
Cambridge International AS A Level Biology Coursebook - EBook (MaryFosbery J...
AzmatAli747758
 
How libraries can support authors with open access requirements for UKRI fund...
How libraries can support authors with open access requirements for UKRI fund...How libraries can support authors with open access requirements for UKRI fund...
How libraries can support authors with open access requirements for UKRI fund...
Jisc
 
TESDA TM1 REVIEWER FOR NATIONAL ASSESSMENT WRITTEN AND ORAL QUESTIONS WITH A...
TESDA TM1 REVIEWER  FOR NATIONAL ASSESSMENT WRITTEN AND ORAL QUESTIONS WITH A...TESDA TM1 REVIEWER  FOR NATIONAL ASSESSMENT WRITTEN AND ORAL QUESTIONS WITH A...
TESDA TM1 REVIEWER FOR NATIONAL ASSESSMENT WRITTEN AND ORAL QUESTIONS WITH A...
EugeneSaldivar
 
Synthetic Fiber Construction in lab .pptx
Synthetic Fiber Construction in lab .pptxSynthetic Fiber Construction in lab .pptx
Synthetic Fiber Construction in lab .pptx
Pavel ( NSTU)
 
The approach at University of Liverpool.pptx
The approach at University of Liverpool.pptxThe approach at University of Liverpool.pptx
The approach at University of Liverpool.pptx
Jisc
 
Supporting (UKRI) OA monographs at Salford.pptx
Supporting (UKRI) OA monographs at Salford.pptxSupporting (UKRI) OA monographs at Salford.pptx
Supporting (UKRI) OA monographs at Salford.pptx
Jisc
 

Recently uploaded (20)

CLASS 11 CBSE B.St Project AIDS TO TRADE - INSURANCE
CLASS 11 CBSE B.St Project AIDS TO TRADE - INSURANCECLASS 11 CBSE B.St Project AIDS TO TRADE - INSURANCE
CLASS 11 CBSE B.St Project AIDS TO TRADE - INSURANCE
 
Language Across the Curriculm LAC B.Ed.
Language Across the  Curriculm LAC B.Ed.Language Across the  Curriculm LAC B.Ed.
Language Across the Curriculm LAC B.Ed.
 
Instructions for Submissions thorugh G- Classroom.pptx
Instructions for Submissions thorugh G- Classroom.pptxInstructions for Submissions thorugh G- Classroom.pptx
Instructions for Submissions thorugh G- Classroom.pptx
 
Phrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXX
Phrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXXPhrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXX
Phrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXX
 
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdf
Welcome to TechSoup   New Member Orientation and Q&A (May 2024).pdfWelcome to TechSoup   New Member Orientation and Q&A (May 2024).pdf
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdf
 
The geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideasThe geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideas
 
1.4 modern child centered education - mahatma gandhi-2.pptx
1.4 modern child centered education - mahatma gandhi-2.pptx1.4 modern child centered education - mahatma gandhi-2.pptx
1.4 modern child centered education - mahatma gandhi-2.pptx
 
The Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdfThe Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdf
 
How to Make a Field invisible in Odoo 17
How to Make a Field invisible in Odoo 17How to Make a Field invisible in Odoo 17
How to Make a Field invisible in Odoo 17
 
Model Attribute Check Company Auto Property
Model Attribute  Check Company Auto PropertyModel Attribute  Check Company Auto Property
Model Attribute Check Company Auto Property
 
Unit 8 - Information and Communication Technology (Paper I).pdf
Unit 8 - Information and Communication Technology (Paper I).pdfUnit 8 - Information and Communication Technology (Paper I).pdf
Unit 8 - Information and Communication Technology (Paper I).pdf
 
The French Revolution Class 9 Study Material pdf free download
The French Revolution Class 9 Study Material pdf free downloadThe French Revolution Class 9 Study Material pdf free download
The French Revolution Class 9 Study Material pdf free download
 
Cambridge International AS A Level Biology Coursebook - EBook (MaryFosbery J...
Cambridge International AS  A Level Biology Coursebook - EBook (MaryFosbery J...Cambridge International AS  A Level Biology Coursebook - EBook (MaryFosbery J...
Cambridge International AS A Level Biology Coursebook - EBook (MaryFosbery J...
 
How libraries can support authors with open access requirements for UKRI fund...
How libraries can support authors with open access requirements for UKRI fund...How libraries can support authors with open access requirements for UKRI fund...
How libraries can support authors with open access requirements for UKRI fund...
 
TESDA TM1 REVIEWER FOR NATIONAL ASSESSMENT WRITTEN AND ORAL QUESTIONS WITH A...
TESDA TM1 REVIEWER  FOR NATIONAL ASSESSMENT WRITTEN AND ORAL QUESTIONS WITH A...TESDA TM1 REVIEWER  FOR NATIONAL ASSESSMENT WRITTEN AND ORAL QUESTIONS WITH A...
TESDA TM1 REVIEWER FOR NATIONAL ASSESSMENT WRITTEN AND ORAL QUESTIONS WITH A...
 
Synthetic Fiber Construction in lab .pptx
Synthetic Fiber Construction in lab .pptxSynthetic Fiber Construction in lab .pptx
Synthetic Fiber Construction in lab .pptx
 
The approach at University of Liverpool.pptx
The approach at University of Liverpool.pptxThe approach at University of Liverpool.pptx
The approach at University of Liverpool.pptx
 
Supporting (UKRI) OA monographs at Salford.pptx
Supporting (UKRI) OA monographs at Salford.pptxSupporting (UKRI) OA monographs at Salford.pptx
Supporting (UKRI) OA monographs at Salford.pptx
 

Role of facial muscles in complete denture prosthesis

  • 1. Role of Facial Muscles in Complete Denture Prosthesis A REVIEW ARTICLE Journal of indian Dental association Dr. Anindita Majumder1, Prof. (Dr.) Sugata Mukherjee2, Prof. (Dr.) Tapan Kumar Giri3, Dr Ashish Barui1, Dr Dibyatanu Majumder1
  • 2. CONTENT • Introduction • Development of facial muscles • Facial muscles Muscles of mastication and its accessory muscles Muscles of facial expression • Role of facial muscles in complete denture prosthesis • Conclusion • References
  • 3. Introduction • Musculature is involved directly in several important phases of complete dentures. • They exert a direct influence upon the peripheral extensions, shape and thickness of denture bases, position of teeth both horizontally and vertically and facial appearances. • In addition they are active during mastication, speech and deglutition. • The muscles that are intimately involved with prosthedontics are skeletal muscles.
  • 4. • In the majority of skeletal muscles ,the origins and insertions are in bone. • However, many skeletal muscles involved in complete denture construction have a bony origin but insert into an aponeurosis, a raphe, or another muscle. • Following group of muscles are studied in relation to complete dentures: Muscles of mastication and its accessory muscles Muscles of facial expression
  • 7. MUSCLES OF MASTICATION  TEMPORALIS  MEDIAL PTERYGOID  LATERAL PTERYGOID  MASSETER
  • 9. ACCESSORY MUSCLES OF MASTICATION  DIGASTRIC  MYLOHYOID  GENIOHYOID  INFRAHYOID
  • 14. MUSCLES OF FACIAL EXPRESSION • These muscles generally donot insert into the bone. They are subcutaneous in position and produces wrinkles or fold in the skin when they contract. • They are responsible for expression of different emotions of an individual. • Also called mimetic muscles.
  • 15. MUSCLES OF FACIAL EXPRESSION
  • 16. MUSCLES OF FACIAL EXPRESSION
  • 17. Role of facial muscles in complete denture prosthesis • Buccinator, Orbicularis oris, Incisivus superioris and inferioris and Bucco- labial groups are of main concern to the Prosthodontist.
  • 18. • Orbicularis oris - This muscles rest on the labial flange and gingival third of anterior teeth. Its tone is determined by the support it receives.
  • 19. • Buccinator - In the lower jaw buccinator muscles becomes part of denture bearing area • the action of buccinator does not dislodge the denture directly because the muscle fibres contract in a line parallel to plane of occlusion, but they are at right angle to the fibres of masseter.
  • 21. • In complete denture prosthesis, it helps in retention of maxillary denture. • Buccal surface of the maxillary denture which incline inward from the border towards the teeth, is in direct contact with the lateral forces from the contracting buccinator muscle.
  • 22. • Modiolus - (LATIN, “A HUB OF AWHEEL”) - It is a fibro muscular mass formed by the convergence of various muscles towards a focus just lateral to the buccal angle
  • 23. • It is formed by nine muscles. They are divided into two groups • 1. Cruciate modiolar muscles - Zygomaticus major, Levator anguli oris, Depressor anguli oris, Platysma pars modiolaris. • 2. Transverse muscles - Buccinator, Risorius, Orbicularis oris, Incisivus superior & inferior.
  • 24. Prosthetic significance : • Border molding: The functional movements are made during the border moulding procedure by holding the modiolus with thumb and index finger. • It helps in establishing the height of occlusal plane of occlusal rim
  • 25. Influence of muscles of facial expression on the borders of maxillary dentures : • Labial flange of the denture - lies in the labial vestibule area extending from buccal frenum in the canine region of one side to the other side. • The main muscle of the lip is orbicularis oris, which forms the outer surface of labial vestibule. Its tone depends on the support it receives from flange and position of the teeth
  • 26. Buccal flange of the denture – • It lies in the buccal vestibule extending from the buccal frenum to hamular notch • It is in relation with three muscles • 1. Levator anguli oris – which lies beneath the frenum and affects its position. • 2. Orbicularis oris – which pulls the frenum forward. • 3. Buccinator – pulls it back.
  • 27. • Buccal vestibule – • Width of the vestibule is influenced by the action of buccinator. Distobuccal end of flange is affected by the masseter and coronoid process. • Hamular notch - • area is influenced by action of buccinator and suprior constrictor into pterygomandibular raphe. When the mouth is open wide, pterygomandibular raphe becomes taut and pulled forward and overextension of the denture may traumatise the tissue
  • 28. • Influence of muscles of facial expression on the borders of mandibular dentures – • Labial frenum : • It contains a band of fibrous connective tissue that helps to attach to orbicularis oris. • Hence this frenum is active and proper relief must be given to permit its movement.
  • 29. Orbicularis oris : • also influences the flange thickness. • When the mouth is open wide it becomes stretched narrowing the sulcus and if the flanges are thick it will displace the denture. • Similarly flange thickness would affect the lip support and aesthetics.
  • 30. • Mentalis • elevates the skin of the chin and the lip outward. It renders the vestibule shallow
  • 31. • Buccal flange of the denture – • Denture should completely cover the buccal shelf despite the fact that it rest on buccinator because fibres of buccinator runs parallel to the base and it contract parallel to the border and not perpendicular to it
  • 32. • Distobuccal area of the vestibule is influenced by the action of masseter which press inward against the buccinator, thereby reducing space in that area
  • 33. • Distal extension of the denture base is up to the retromolar pad , which is lined by thin non keratinised epithelium and sub-mucosa containing glandular tissues, fibres of the temporalis, attachments of the buccinator and superior constrictor in the pterygomandibular raphe. • When the patient opens the mouth, the pterygomandibular raphe is pull forward and overextension of denture base may cause dislodgement of the denture
  • 34. CONCLUSION • Successful denture construction and comfortable wearing of the prosthesis is depended on various factors but amongst all, role of muscles are influential one, and facial muscles are important for coordination between prosthesis performance and facial expression of emotion. Their action must be understood and recorded at all step of fabrication of prosthesis
  • 35. REFERENCES • 1. O. Rahn, Charles M. Heartwell. Textbook of Complete Dentures. 5th Edition, BC Decker, 2002. • 2. Debasis Pramanick. Principles of Physiology. 5th Edition. Jaypee. 2015. • 3. A. K. Dutta. Essentials of Human Anatomy – Head and Neck. 6th Edition. Current Books International. • 4. George A. Zarb, Charles L. Bolender, Steven Eckert, Rhonda Jacob, Aaron Fenton, Regina Mericske-Stern. Bouche’s Prosthodontic Treatment for Edentulous Patients. 9th and 12th Edition. Elsevier. • 5. Martone A. L. The Phenomenon of Function Of Complete Denture Prosthodontics. J Prosthet Dent, 1962; 12(6): 1020- 1041. • 6. Beresin VE, Schiesser FJ. The Neutral Zone in Complete Denture. 2006, 95(2): 93-100.