TMJ & characteristics of occlusion

Temporomandibular joint belongs to which of the following joint:

• Cartilaginous

• Fibrous

• Synovial

• Sterno-costal

Which of the following structures divides the TMJ in two?

• Right & left Condylar heads

• Articular disk

• Capsule and supportive ligaments

• Articular eminence

The right and left heads of the mandibular condyles articulate in which of the following structures?

• Condyloid process

• Coronoid process.

• Articular eminence

• Glenoid fossae

An unusual feature of temporomandibular joint as compared to all other joints in the human body is :

• Intra-articular disk divides joint cavity into two joint spaces

  Synovial joint with synovial fluid & synovial membrane

• Primary & secondary cartilages are present

• It is affected by osteoarthritis frequently

• It has muscles and ligaments supporting it

Which one of the following is not a function ascribed to the intra-articular disc:

• Acts as a shock absorber

• Improves the fit between the bony surfaces

• Provides instability during the movement

• Spread synovial fluid

Superior and anterior position of the mandible with the disc properly interposed is known as:

• Centric relation

• Centric occlusion

• Ideal occlusion

• Long centric

Which of the following describes the most stable position of the condyle?

• Centric occlusion

• Centric relation

• Long centric

• Ideal occlusion

Maximum intercuspation of teeth contacting in a position that the patient finds the most comfortable is known as :

• Centric occlusion
• Centric relation
• Maximum opening
• Lateral excursion

Early lateral movements of the mandible should ideally be :

• Guided by anterior teeth

• Guided by canines

• Guided by all the posterior teeth known as group function

• Guided by the cusp tips of the mandibular canines

Dental occlusion refers to:

• Relationship of teeth within the dental arches

• Relationship of the condyle in rest position of mandible

• Relationship of the dental arches when tooth contact is made

• curvature of the dental arches in the anterio-posterior direction