Manual - Chapter 1

Question 1

The gnathological opinion is that each posterior maxillary ___ should have ___ contacts with the opposing mandibular teeth and each posterior mandibular ___ cusp should have ___ contacts with the opposing maxillary cusp in a ___ relationship.

Answer 1

• lingual
• 3
• buccal
• 3
• Class I

Question 2

True or false: Cusp-fossa contacts are acceptable, while cusp-marginal ridge are not.

Answer 2

FALSE. Both are acceptable.

Question 3

A patient’s occlusal adjustment involves the evaluation of their ___ as it relates to ___, ___, and ___.

Answer 3

• centric relation position
• maximum intercuspation
• laterotrusive
• protrusive movements

Question 4

What are the 4 goals of typodont adjustment to get a stable occlusion?

Answer 4

• to develop a stable occlusal relationship between the upper and lower members
• no anteroposterior or mediolateral rock
• a minimum of 3 bilateral posterior contacts (2 molars and 1 premolar) in maximum intercuspation
• a minimum of 3 anterior contacts (canines bilaterally and 1 incisor) in maximum intercuspation, if possible

Question 5

What is modified first when correcting the occlusion of your typodont?

Answer 5

the four screws that attach the hinge axis

Question 6

How is an occlusal prematurity identified when adjusting occlusion?

Answer 6

with Accufilm and/or feeling where the rotation point is when the typodont rocks back and forth

Question 7

When using Accufilm, what side is put toward the teeth that you intend to adjust?

Answer 7

red side

Question 8

Describe the proper Accufilm technique to eliminate the possibility of false marks.

Answer 8

• use Accufilm on whole arch with the red side toward the arch you will be adjusting and tap tap tap
• tap tap tap without the film after to identify the true contacts

contacts that have 2 colors are true contacts while contacts that have only 1 color are false marks

Question 9

If there is an occlusal prematurity on a functional cusp, how should it be adjusted?

Answer 9

do NOT shorten a functioning cusp to eliminate a maximum intercuspation occlusal prematurity; always deepen the opposing fossa

Question 10

How is an occlusal prematurity on the anteriors adjusted? Why?

Answer 10

• adjust the lingual of the maxillary anteriors to remove anterior prematurities
• loss of protrusive contact with maxillary anteriors prevents the patient’s ability to incise food; changing the interocclusal space between the incisors may also effect the patient’s phonation of “s”

Question 11

If there is an occlusal prematurity in the correct position, how should it be adjusted?

Answer 11

to lighten an occlusal contact that is in the correct position, adjust 2 the indicating mark; never remove the entire mark!

Question 12

Describe the method of using shim stock in occlusal adjustment.

Answer 12

• cut piece the width of the first premolar (when it is too wide, it is difficult to determine which tool is holding it)
• try to pull the shim stock out from between the maxillary and mandibular teeth when pressure is applied to make the teeth in maximum intercuspation
• if shim stock slides out, there is no contact

Question 13

What are the MUDL and BULL rules?

Answer 13

• MUDL: advises you to adjust the mesial incline of maxillary teeth and distal inclines of mandibular teeth
• BULL: advises you to adjust the buccal inclines of maxillary teeth and lingual inclines of mandibular teeth

Question 14

When mounting, the condylar inclination should be set at ___ and the incisal guide pin should be set at ___.

Answer 14

• 25 degrees

- 0

Question 15

Before mounting casts, you should place ___ on the bottom of the casts and ___.

Answer 15

• grooves

- soak the BASE for 5 minutes

Question 16

When mounting, anteriorly-posteriorly, the maxillary cast should have an incline of approximately ___.

Answer 16

10 degrees

Question 17

What are the 5 criteria for evaluating the custom incisal guide table?

Answer 17

• with centric latch engaged, the articulator hinges freely into and out of the intercuspal (centric) position without guide pin interferences
• resin anterior to the guide pin is removed
• guide pin makes continuous contact with the resin during all excursions; simultaneous contact occurs with the guiding surfaces of the anterior teeth
• resin surface allows free movement in the range from IP to any anterior edge-to-edge position with condylar elements containing each other
• the overall height of the resin is not over 8mm from the incisal table or 3 mm superior to the edge-to-edge border