DENT 5315/DH 2215 March 4, 2008 - PowerPoint PPT Presentation

Slide1 l.jpg
1 / 23

  • Uploaded on
  • Presentation posted in: General

DENT 5315/DH 2215 March 4, 2008. Here comes the Quiz!. Yes!. KEY. Temporomandibular Joint. Dr. Sandra Myers Director, NIDCR’s TIRR TMJ Implant Repository. N ational I nstitute of D ental and C raniofacial R esearch's T MJ I mplant R egistry and R epository. Splints.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

Download Presentation

DENT 5315/DH 2215 March 4, 2008

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript

Slide1 l.jpg

DENT 5315/DH 2215 March 4, 2008

Here comes

the Quiz!


Slide2 l.jpg


Slide3 l.jpg

Temporomandibular Joint

Dr. Sandra Myers

Director, NIDCR’s TIRR TMJ Implant Repository


Institute of

Dental and Craniofacial Research's



Registry and Repository

Splints l.jpg


Patient slides deleted to protect patient identity.

Temporomandibular joint tmj l.jpg

Temporomandibular Joint (TMJ)

Classification of Joints

Temporomandibular Joint

I classification of joints l.jpg

I. Classification of Joints

3 Types of Joints:

  • Fibrous

  • Cartilaginous

  • Synovial

I classification of joints7 l.jpg

I. Classification of Joints

Ii temporomandibular joint tmj l.jpg

II. Temporomandibular Joint (TMJ)

Type of Joint


Anatomy & Histology

D. Biomechanics

E. Innervation

F. Blood Supply

Ii temporomandibular joint tmj9 l.jpg

II. Temporomandibular Joint (TMJ)

Type of Joint

“synovial sliding-ginglymoid joint”

Ginglymoid means: Pertaining to, or resembling, a ginglymus, or hinge joint; ginglyform.

Ii temporomandibular joint tmj10 l.jpg

II. Temporomandibular Joint (TMJ)


Association of Meckel’s cartilage with mandible

Condylar cartilage appears 12th week

Ii temporomandibular joint tmj11 l.jpg

II. Temporomandibular Joint (TMJ)

Anatomy & Histology

Condylar head l.jpg

Condylar Head

Bovine Condyle

Condylar head13 l.jpg

Condylar Head

A - Fibrous layer

B - Reserve zone

C - Proliferative zone

D - Hypertrophic zone

E - Calcifying zone

F - Bone

Capsule l.jpg


  • Functions:

  • Seals joint space

  • Passive stability

  • Synovial lining

  • Proprioceptive nerve endings

Note synovial membrane over villi (arrow):

Articular disk l.jpg

Articular Disk

“Acres of Collagen”

Aneural & Avascular

Posterior ligament l.jpg

Posterior Ligament

Synovial membrane l.jpg

Synovial Membrane

  • Synovial Fluid:

  • Liquid environment

  • Lubrication

  • Nutrition?

Muscles l.jpg


Muscles of Mastication

Difference between unipennate, bipennate & multipennate:

Muscles with central tendon

Muscle fiber bundles attached to one side, two sides or around multiple central tendons

D biomechanics l.jpg

D. Biomechanics

Complex combinations of muscle activity

Disk enables complex movements

D innervation l.jpg

D. Innervation

Movements of synovial joint initiated & effected by muscle coordination.

Achieved in part through sensory innervation.

Hilton’s Law:

The muscles acting on a joint have the samenerve supply as the joint.

Therefore: Branches of the mandibular division of the fifth cranial nerve supply the TMJ (auriculotemporal, deep temporal, and masseteric)

D innervation21 l.jpg

D. Innervation

4 Types of nerve endings:

1. Ruffini’s corpuscles (limited to capsule)

2. Pacini’s corpuscles (limited to capsule)

3. Golgi tendon organs (confined to ligament)

4. Free nerve endings (most abundant)

Pacinian corpuscle l.jpg

Pacinian Corpuscle

“Onion-like encapusulated pressure receptors

Surrounding concentric lamellae respond to distortion, generate action potential in unmyelinated fiber in core

Bar = 100 microns

Ruffini s golgi corpuscle l.jpg

Ruffini’s & Golgi Corpuscle

Function: Ruffini’s = Posture (proprioception), dynamic and static balance

Golgi tendon organ = Static mechanoreception, protection (ligament)

Free nerve endings = Pain (nociception) protection (joint)

Ruffini’s Corpuscle MicroscopicAnatomy/Section06/Section06.shtml

  • Login