interdental occlusion

Question 1

maximal intercuspal position

Answer 1

the complete intercuspation of the opposing teeth independent of condylar position

Question 2

centric relation

Answer 2

condyles articulate with the thinnest avascular position of their respective discs, with complex in the anterior superior position

• independent of tooth contact
• only rotary movement

Question 3

what happens to working side when you move mandible to the right

Answer 3

teeth meet on the right of the intercuspal position

Question 4

what happens to the non-working side when you move to the right

Answer 4

• the left side
• teeth may or may not contact
• ideal is to NOT have contact

Question 5

interferences

Answer 5

if teeth make contact on the non-working side

Question 6

vertical forces

Answer 6

• occlusion

- eruption force

Question 7

horizontal forces

Answer 7

• tongue
• muscles (cheek, lips)
• proximal contact

Question 8

tongue force is counterbalanced by

Answer 8

lips resistance and facial muscles (buccinator muscle)

Question 9

proximal contacts counterbalance

Answer 9

forces acting towards middle line

Question 10

in ideal occlusion, the teeth have contact with ___ teeth in the opposing arch

Answer 10

2

*exceptions: mandibular ci, max 3rd molar

Question 11

posterior overjet and overhang of upper teeth

Answer 11

helps prevent bitting cheek or tongue

Question 12

horizontal overlap

Answer 12

overjet

Question 13

vertical overlap

Answer 13

overbite

Question 14

posterior cusps articulate with either

Answer 14

marginal ridges or fossa

Question 15

functional cusp

Answer 15

• max: lingual
• mand: buccal
• provide centric stops
• bear load

Question 16

non-functional cusp

Answer 16

• max: buccal
• mand: lingual
• guide movements