Mand. movement - Dr. Becker

Question 1

So if I asked you a question, what is the the most common lever system for the human dentition?

Answer 1

Class 3 lever

Question 2

what is position of the condyle in centric relation?

Answer 2

anterior-superior

centric relation = when the condyle is seated in the glenoid fossa in the most anterior/superior position

Question 3

Where is the position of condyle within the glenoid fossa in centric relation

Answer 3

anterior superior

Question 4

which occlusion prevents the posterior teeth from contacting in all eccentric movements?

Answer 4

anterior guidance
o the influence of the contacting surfaces of anterior teeth, limiting mand mvmts
o relationship of anterior teeth preventing posterior tooth contact in all eccentric mand mvmts
o “canine guidance”
o anterior teeth bear all the load in excursive mvmts
o posterior teeth are discluded in all excursive mvmts

Question 5

which muscle is responsible for protrusion?

Answer 5

lateral pterygoid

retrusion = posterior temporalis
 elevation = masseter

Question 6

left working mvmt = mandibular mvmt left, mastication on the left, = activation of…

Answer 6

right lateral pterygoid

Question 7

when do you want bilateral balanced occlusion?

Answer 7

removable prosthetics

Question 8

mutually protected occlusion includes what?

Answer 8

1) anterior guidance 2) stable posterior contacts
 *considered ideal = less likely to cause problems

Question 9

which has the greatest amt of force?

Answer 9

posterior teeth bc closest to focal point

Question 10

frontal view of border movements (shield), right dot =

Answer 10

max right lateral