Principles of occlusion

Question 1

What is centric occlusion?

Answer 1

Posn of mandible when maximum teeth are in contact

Tooth related jaw position

Question 2

What is centric relation?

Answer 2

Maxillo-mandibular relation with muscles relaxed and condyles in the most anterior-superior position in the glenoid fossa

No intercuspation of teeth
Most reproducible position
Border position of mandible
Jaw relationship NOT tooth relationship

Question 3

What is retruded contact position?

Answer 3

The first tooth to contact in centric relation

10% people, RCP = ICP otherwise there is a slide between RCP and ICP

Question 4

What is canine guidance?

Answer 4

Path of guidance provided by the palatal surface of the maxillary canine teeth during lateral movement of the mandible

Question 5

What is group function?

Answer 5

Articulation between posterior teeth on the working side during lateral movement of the mandible

Question 6

What is anterior guidance?

Answer 6

Path of guidance provided by the palatal surfaces of the most anterior upper teeth during protrusive movements of the mandible