Occlusion

Question 1

3 rules to follow (BCE)

Answer 1

B - bilateral and even occlusion (check with articulating paper - when tooth interferences occur jaw will slide upon full closure)
C - canine guidance causes disocclusion of all posterior teeth
E* - uninterrupted envelope of function

*when chewing: md swings laterally, forward, when closing returns back into centric stop

Question 2

How may an excessive overbite affect denture fabrication?

Answer 2

have to open up bite, otherwise no room for denture

Question 3

Effect on incisors if envelope of function is violated.

Answer 3

thinning from wear

Question 4

What would you do for pt who comes in w gaps in front teeth and you are suspecting issue is occlusion?

Answer 4

1. take impressions
2. make study models
3. articulate in CR
4. see where early/contact/interferences are at with help of green paint-like ???
   reproduce in patients mouth

Question 5

benefits of canine/anteiror guidance

Answer 5

takes pressure of posteriors in lateral excursion as less force of mastication as you move further from the back

Question 6

What determines anterior guidance

Answer 6

shape n position of anterior teeth

Question 7

Which bite disorder has more detrimental effects to teeth and TMJ?

Answer 7

deep bite

Question 8

What exacerbates deep bite?

Answer 8

lack of posteriors

Question 9

What effect does parafunction have on TMJ?

Answer 9

ongoing remodelling

Question 10

Downside of NTI splint

Answer 10

can cause anterior open bite

Question 11

What is it called if more than 1 tooth contacting on lateral movements and what is a downside?

Answer 11

group function

can cause parafunction and occlusal wear

Question 12

What is CO and CR. Benefits of CR

Answer 12

CO - habitual bite

CR - relationship of mx to md when head of condyle is in most posterior portion of distal incline of glenoid fossa

reproducible

Question 13

What is VDO?

Answer 13

VD in CR

Question 14

What may be a clue of occlusal wear?

Answer 14

steep curve of spee