This document discusses the applied anatomy of the maxilla and mandible as it relates to dental implant surgery. It covers the anatomy of the maxillary sinus, pterygoid plates, mandibular canal containing the inferior alveolar nerve, mental foramen containing the mental nerve, and retromolar area. The goal is to understand the surgical anatomy to safely place dental implants and avoid injuries to nearby structures like blood vessels and nerves.
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.
this presentation describes the detail anatomy of Temporo-mandibular joint with respect to its articulating surfaces, ligaments, muscles and blood and nerve supply.
This seminar explains about the development, relations, ligaments, various attachments, vascular and nervous supply and various surgical approaches and its modifications to TMJ
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.
this presentation describes the detail anatomy of Temporo-mandibular joint with respect to its articulating surfaces, ligaments, muscles and blood and nerve supply.
This seminar explains about the development, relations, ligaments, various attachments, vascular and nervous supply and various surgical approaches and its modifications to TMJ
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.
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.
Anatomy of the maxilla and its surgical implications /cosmetic dentistry 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.
MANDIBULAR ANATOMICAL LANDMARKS
PRESENTED BY
ROSHALMARIA THOMAS
IV/II
THE ANATOMY OF EDENTULOUS RIDGES IN THE MAXILLA AND MANDIBLE IS VERY IMPORTANT FOR THE DESIGN OF THE COMPLETE DENTURE
THE TOTAL AREA OF SUPPORT FROM THE MANDIBLE IS SIGNIFICANTLY LESS THAN FROM THE MAXILLA.
THE AVERAGE AVAILABLE DENTURE BEARING AREA FOR AN EDENTULOUS MANDIBLE IS 14cm2 , WHEREAS FOR EDENTULOS MAXILLA IT IS 24cm2. THEREFORE THE MANDIBLE IS LESS CAPABLE OF RESISTING OCCLUSAL FORCES THAN THE MAXILLA.
Labial frenum
Fibrous band
Muscles incisivus and orbicularis oris
Active
Labial vestibule
Space between residual alveolar ridge and lips
Length and thickness of labial flange-influences lip support and retention
Buccal frenum
Overlies depressor anguli oris
Fibers of buccinators attached
Buccal vestibule
Extends- posteriorly from buccal frenum to retromolar pad region
Residual alveolar ridge on one side and buccinators on other
Influenced by action of masseter
Lingual frenum
Should be relieved
High lingual frenum is called tongue tie –affects stability
Alveololingual sulcus
Extends from lingual frenum to retromylohyoid curtain
Divided into 3 parts- anterior, middle and posterior
Anterior region- from lingual frenum to premylohyoid fossa
Flange is shorter anteriorly and should touch the floorof the mouth whentip of tongue touches upper incisors
Middle- extends from premylohyoid fossa to distal end of mylohyoid ridge
Shallower due to prominence of mylohyoid ridge and action of mylohyoid muscle
Posterior- retromylohyoid fossa
Typical S form of lingual sulcus
Retromolar pad
Posterior seal of mandibular denture
Pear shaped
Triangular keratinized soft pad of tissue at distal end of ridge
Bounded posteriorly by tendons of temporalis, laterally by buccinators and medially by pterygomandibular raphe and superior constrictor
Denture should extend one half to two thirds of retromolar pad
Buccal shelf area
Area between buccal frenum and anterior border of masseter
Width increases as resorption continues
Lies at right angles to occlusal forces- primary stress bearing area
Residual alveolar ridge
Edentulous mandible may become flat with concave denture bearing surface
In such cases, structures attaching on lingual side of ridge attach over the ridge
Due to resorption mandible inclines outwards and becomes progressively wider
Mylohyoid ridge
Runs along lingual surface of mandible
Anteriorly lies close to inferior border of mandible, posteriorly lies flush along the ridge
Thin mucosa- easily traumatized- hence should be relieved
Undercut present under the ridge
Mental foramen
Between first and second premolar region
Relieved- as pressure may cause paresthesia
Genial tubercles
Pair of bony tubercles
Present anteriorly on lingual side of body of mandible
Due to resorption may become increasingly prominent- denture usage difficult
Anatomical considerations for placing dental implants.
all the basic anatomical landmarks and considerations which are to be taken care off before and while placing a dental implant.
any type of implant it may be...wether endossous or subperiosteal or tranosteal.
lack of knowledge of basic anatomy will never lead to success of implant.
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.
Repositioning and fixation of simple, non displaced mandibular angle fractures by means of minimum exposure of the fracture site and fixation by wiring osteosynthesis.
Dentist in pune.(BDS) MDS- OMFS - Dr. Amit T. Suryawanshi.. Mandibular fractu...All Good Things
Dentist in pune. (BDS. MDS) - Dr. Amit T. Suryawanshi. Seminar-Canine Impaction.
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Contact -Ph no.-9405622455
Subscribe our channel on youtube - https://www.youtube.com/channel/UC_gylEXTrjmEbbOTSXjuZ4Q/videos?view_as=public
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A periodontal flap is a section of gingiva and/mucosa that is surgically separated from the underlying tissue to provide visibility and the access to the bone and the root surface. The flap also allows the gingiva to be displaced to a different location in patients with mucogingival involvement.
In this PowerPoint presentation, the periodontal flap is described under the headings: indication, contraindications, classification of flaps, flap design, horizontal and vertical incisions and various flap technique such as modified widman flap, undisplaced flap, palatal flap, apically displaced flap, papilla preservation flap and distal molar surgery for maxillary and mandibular molars. It also contains healing after flap surgery.
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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.
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Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
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2. Introduction
Applied anatomy of maxilla
Pterygoid area
Applied anatomy of mandible.
Retromolar area
Summary
References
3. Normal vs abnormal anatomy from tooth loss
generates a compromised repaired structure both in
function and form.
Goal will be to develop a view of surgical anatomy as
it relates to surgical procedures
4. Hollow and cuboid
shaped Paired bone
with pyramidal base
facing
medially,separted by
nasal fossa.
Septum in
center,bordered
inferiorly ,bilaterally
by oral cavity.
5. Hollow maxilla is
covered by a 3 layered
mucoperiosteum.
Color –purple –red
Elastic consistency
Thin ,yellow and
friable-smokers
7. Most common complication.
Repair of relatively small (5-10 mm) tears is
commonly done using fast resorbing collagen
membranes and/or by allowing the sinus
membrane to overlap on itself.
A technique using a cross-linked type I collagen
membrane for predictable repair of large
perforations (> 10 mm) as well as for
circumstances in which no membrane is found is
described.
Implant Dent 2008;17:24–31
12. • Incisive canal ,found
adjacent to nasal
septum ,8-18 mm
behind anterior
aspect of floor of
nasal fossa.
• May be at level of
crest in resorbed
ridges
13. May be chosen by
surgeons for implants
Goal-engage
pterygoid process
without bone
augmentation-
creating abutment for
FPD.
14. Caution-pterygoid
fossa lying superiorly is
avoided_severe
hemorrhage may occur.
Ptergomaxillary butress
–an area of increased
bone density and
volume is responsible
for transmitting
masticatory forces.
15. Anatomic features of
dentulous and
edentulous mandible.
The muscles,
innervation are of
prime importance
19. Retraction of alveolar
nerve.
3 branches of mental
nerve
20. Some clinicians consider Mental nerve to be in
Halfway between inferior border of mandible and
alveolar ridge.
Generally,it is located slightly inferior toward the
border of mandible,although it can be found 1/3rd
inferiorly to mandible than superiorly.
21. Relation of inferior
alveolar canal to 1st
2nd and 3rd molars.
22. Injury to IAN that remains in atrophied bone and
does not innervate soft tissues is of less
consequence.
Nerves in bone,when in contact with implant
,account for tenderness,even though implant is
rigid and healthy.
23. Lingual nerve-Improper flap reflection may cause
an injury.
Ipsilateral paresthesia
Anaesthesia of innervated mucosa.
Loss of taste.
reduction of salivary secretion.
27. ◦ Fibres insert into
condyle, TMJ disk.
◦ Because of angulation
of lateral pterygoid
muscle,mandibular
flexure may be caused
–causing alteration in
mandibular arch
width,pain in patients
with sub-periosteal
implants
28. Insertion is into coronoid
process of mandible.
Surgical exposure
,medially in ramus may
injure tendon of
temporalis-while
harvesting bone from
external oblique ridge,or
placing incision for
subperiosteal implants.
29. Complete reflection of
mentalis muscles for
purpose of extension of
subperiosteal implant or
symphyseal intraoral
graft may result in witch’s
chin.
If muscle is completely
detached to expose
symphysis,then elastic
bandage is applied
externally to chin for 4
days to help in
reattachment of muscle.
30. Some patients wearing lower sub-periosteal
implants c/o episodic swelling and pain at the site
of origin of heavymastication or bruxism.
Myositis of detached muscle may cause it.
31. Massetric space infection may result. during
surgery to expose bone for ramus extension
needed for lateral support of sub-periosteal
implant.
32. Anatomic sites for
dental implants.
Orthodontic anchorage
can be derived.
Healthy teeth can be
moved upto 15 mm
within alveolar process
without compromising
position of remaining
dentition.
33. Implant placement is 5
mm distal to 3rd molar.
Engage between
cortical bone ,between
mandibular retromolar
area and ascending
mandibular ramus.
Prevent entry into
mandibular canal.
34. Surgical anatomy of maxilla and mandible provide
foundation required for safe insertion of dental
implants.
The anatomy is requisite to understanding of
complications that may occur during surgery ,like
injury to blood vessels or nerves,as well as post –
op complication such as infection.
This information is important for operator, to deal
with confidence and to avoid complications.
35. Misch 3rd edition
Babbush:art and science
Maxillary Sinus Membrane Repair: Update on
Technique for Large and Complete Perforations
Implant Dent 2008;17:24–31)
http://jiacd.com/
Human anatomy BD chaurasia 4th edition
Snell’s anatomy
Editor's Notes
Normal vs abnormal anatomy from tooth loss generates a compromised repaired structure both in function and form.
Goal will be to develop a view of surgical anatomy as it relates to surgical procedures
Schneiderian membrane or sinus membrane -0.3-0.8mm
1.2nd pm and 1st molar.
2.Negative pressure during inspiration and lack of fn stimulation by teeth-cause pneumatization of maxillary sinus.
Generally, in case of maxillary antroplasties ,sinus membrane is not torn due to elasticity
.
Accessory ostia are found in 30-40% cases ,in cases with extremly resorbed maxillas,in which floor of sinus is level with the floor of the nose,it is wise to identify anatomic structures using nasal endoscopy.
It helps as pre-op diagnostic tool to allow identification of potential complications with sinus bone grafts,before obliterating the accessory ostium or contaminating the graft.
An implant in this region ,its path comes from maxillary tuberosity and aims into pterygoid portion of of maxillary bone,passing lateral pterygoid plate medially,pterygoid process posteriorly,and superiorly to avoid pterygoid fossa
Placement of any implant in this dangerous zone can cause severe hemorrhage of pterygoid muscles and pterygoid plexus.
Pterygomaxillary buttress has an area of increased bone density and volume,responsible for transmitting posterior masticatory forces originating from tuberosity to skull base..
Posterior mandible is ltd for implant placement because of bone loss and subsequent proximity to IAN and vessels.in dentate indivisuals,distance from mand 1st molar is about 3mm.eg if root length of 1st molar is 12mm,and immd implant is planned ,it is recommended ,that implant is longer than the tooth root….but,if canal is close by,use shorter implant.
Bilateral swelling-tracheostomy may have to be performed.
Superior pair is attached to muscle-while making impression of subperiosteal implant ,avoid injury to structure.
Incisions of these swelling yield no purulent exudate.
Given by Eugene Roberts .
Surgical anatomy of maxilla and mandible provide foundation required for safe insertion of dental implants.The anatomy is requisite to understanding of complications that may occur during surgery ,like injury to blood vessels or nerves,as well as post –op complication such as infection.This information is important for operator, to deal with confidence and to avoid complications.
