Lecture 9

Question 1

What is the approximate cost for six month smiles?

Answer 1

-$3000-4,500

Question 2

What is the first key to normal occlusion?

Answer 2

-Molar relationship

Question 3

where should the mesiobuccal cusp of the maxillary first molar be in ideal occlusion?

Answer 3

-In line with the buccal groove on the mandibular first molar

Question 4

What is the second key to normal occlusion?

Answer 4

-Crown angulation or tip

Question 5

What is the angle between the long axis of the brown and a line bearing 90 degrees from the occlusal plane?

Answer 5

-Degree of crown tip

Question 6

T/F Normal occlusion is dependent upon proper distal crown tip, especially of the upper anterior teeth since they have the longest crowns

Answer 6

True

Question 7

What is the third key to normal occlusion?

Answer 7

-Crown incliniation

Question 8

What is a plus reading in crown incliniation?

Answer 8

-If the gingival portion of the crown is lingual to the incisal portion

Question 9

What is the fourth key to normal occlusion?

Answer 9

-Teeth should be free of undesirable rotations

Question 10

What is the fifth key to normal occlusion?

Answer 10

-Tight contacts

Question 11

What is the sixth key to normal occlusion?

Answer 11

-Occlusal plane

Question 12

What should the curve of spee look like?

Answer 12

-Flat to slight curve

Question 13

What is the ideal overbite that you want a patient to have?

Answer 13

1-2 mm

Question 14

What is a class I occlusal relationship?

Answer 14

-Triangluar ridge of the mesiobuccal cusp of the maxillary first molar articulates with the buccal groove of the mandibular first molar

Question 15

Where does the maxillary canine lie in a class I occlusion?

Answer 15

-Between the mandibular canine and first premolar

Question 16

What is a class II occlusal relationship?

Answer 16

-The mesiobuccal cusp of the maxillary first molar falls approximately between the mandibular first molar and the second premolar

Question 17

What is a class III occlusal relationship?

Answer 17

-The mesiobuccal cusp of the maxillary first molar falls approximately between the mandibular first molar and second molar

Question 18

What is class II division 1 relationship?

Answer 18

-Class II molar relationship with protruded maxillary incisors

Question 19

What is a class II division 2?

Answer 19

-Calss II molar relationship where the maxillary lateral incisors are tipped labially and mesially where the central incisors are typically retruded

Question 20

When the mandible is proportionally smaller than the maxilla what dental class is formed?

Answer 20

-A class II with a convex profile

Question 21

When the mandible is relatively greater than the maxilla what dental class is formed?

Answer 21

-Class III relationships with a concave profile

Question 22

When describing primary molar relationships what teeth do you use?

Answer 22

-Distal aspect of the second primary molars called the terminal plane

Question 23

What is the normal relationship in the primary dentition?

Answer 23

-Flush terminal plane

Question 24

What is the maxillary primate space?

Answer 24

-Between the lateral incisors and the canine

Question 25

WHat is the mandibular primate space?

Answer 25

-Between the canine and the first molar

Question 26

What are the two types of movement of the mandible?

Answer 26

- Translation | - Rotation

Question 27

What is it called when the body of the mandible is turning about an axis and can happen in three planes?

Answer 27

-Rotation

Question 28

What is it called in which all points within a body have identical motion?

Answer 28

-Translation

Question 29

During translation what muscle moves the condyle articular disk assembly forward?

Answer 29

-Lateral pterygoid muscle

Question 30

The rotational limit of the mandible is how much?

Answer 30

12 mm of incisors separation

Question 31

What are mandibular movements limited by?

Answer 31

- TMJ - Ligaments - Neuromuscular system - Teeth

Question 32

What determines anterior movements of the mandible?

Answer 32

-The teeth

Question 33

Understanding the function of the anterior teeth and canines and their horizontal and vertical overlap determine what?

Answer 33

-The occlusal form of posterior teeth and their restorations

Question 34

The more horizontal overlap of the anterior teeth (increased overjet) what must the posterior cusps look like?

Answer 34

-They must be shorter

Question 35

The more vertical overlap of anterior teeth (Increased overbite) what do the posterior cusps look like?

Answer 35

-They may be taller

Question 36

A steeply sloped eminence creates a large downward component of condylar movement during lateral and protrusive excrusion and results in what?

Answer 36

-early separation of the posterior teeth allowing for taller posterior cusps

Question 37

What is it called when the condyles articulate with the thinnest avascular portion of their respective articular disks with the complex in the anterosuperior position?

Answer 37

-Centric Relations

Question 38

T/F Centric relation is independent of tooth contact

Answer 38

True

Question 39

Anterior movement of only one condyle will produce what type of movement in the opposite TMJ?

Answer 39

-Reciprocal lateral rotation

Question 40

If the inclination of the articular eminence is steeper are the posterior cusps taller or shorter?

Answer 40

-Taller