Week 9 - Occlusal Equilibration

Question 1

What are the goals of occlusal equilibration?

Answer 1

1. To improve functional and esthetic relationships between maxillary and mandibular teeth.
2. To eliminate TMD.

Question 2

Permanent occlusal therapy is indicated only when ____.

Answer 2

Significant evidence exists to support that the occlusal condition is an etiological factor. One should not routinely alter occlusion without such evidence.

Question 3

How do you do treatment planning for occlusal therapy?

Answer 3

Generally, the best choice is to perform the least amount of dental alterations that will fulfill the treatment goals.

1. Selective grinding
2. Fixed prosthodontics
3. Orthodontic therapy
4. Orthognathic surgery

Question 4

According to the Rule of Thirds, what is best treatment if the offensive contact is in the inner third of a cusp?

Answer 4

Selective grinding

Question 5

According to the Rule of Thirds, what is best treatment if the offensive contact is in the middle third of a cusp?

Answer 5

Fixed prosthodontics

Question 6

According to the Rule of Thirds, what is best treatment if the offensive contact is in the outer third of a cusp?

Answer 6

Orthodontic treatment

Question 7

Vertical overlap slide?

Answer 7

?

Question 8

What factors influence occlusal equilibration treatment planning?

Answer 8

1. Symptoms
2. Condition of the dentition
3. Systemic health
4. Esthetics
5. Finances

Question 9

Define selective grinding.

Answer 9

Selective grinding is a procedure by which teeth are altered to improve the overall contact pattern. It is appropriate only when alteration of the tooth surfaces are minimal enough that all correction can be made within the enamel.

Question 10

The shorter the slide, the more likely it is that _____.

Answer 10

selective grinding can be accomplished within the confines of the enamel.

Question 11

When the slide has great horizontal component, it becomes difficult to ______.

Answer 11

eliminate within the confines of the enamel.

Question 12

What is the purpose of diagnostic casts?

Answer 12

Tooth alignment and the centric relation slide (CO/MI) are more easily evaluated on mounted diagnostic casts. Selective grinding is carefully performed on the diagnostic casts so that the final results can be visualized.

Question 13

What is the “hammer and anvil” principle of selective grinding?

Answer 13

Work on the fossa that the functional cusp fits in.

Question 14

How do you evaluate mandibular excursions?

Answer 14

1. Locate the tooth in the arch
2. Determine if it moves
3. Identify movement

Question 15

Study the mandibular excursion examples.

Answer 15

Study the mandibular excursion examples.

Question 16

Deviation forward (on closing) = ?

Answer 16

Grind MUDL, Mesial of Upper and Distal of Lower

Question 17

Deviation toward cheek (on closing) = ?

Answer 17

Grind BULL, Buccal of Upper and Lingual of Lower

Question 18

Deviation toward tongue (on closing) = ?

Answer 18

Grind LUBL, Lingual of Upper and Buccal of Lower

Question 19

Non-working interferences (on opening) = ?

Answer 19

BULL

Question 20

Working interferences (on opening) = ?

Answer 20

LUBL

Question 21

Protrusive interferences (on opening) = ?

Answer 21

DUML (mostly D of upper)