Physiological Tooth Form

Question 1

The mandibular first premolar lingual surface amount of the height of contour and its location is 0.75 mm in the cervical third. The mandibular second premolar lingual surface amount of contour and location is 0.5 mm in the cervical third.

A. Both statements are false
B. The first statement is true; the second statement is false
C. The first statement is false; the second statement is true
D. Both statements are true

Answer 1

A. Both statements are false

Question 2

The periodontal ligament fibers act as a shock absorber. They control and affect longitudinal and lateral forces to a tooth in the alveolus.

A. Both statements are false
B. The first statement is true; the second statement is false
C. The first statement is false; the second statement is true
D. Both statements are true

Answer 2

D. Both statements are true

Question 3

The permanent maxillary central incisor will deviate from the vertical axis approximately _____ degrees from the proximal and _________ degrees from the facial.

Answer 3

28 degrees from the proximal and 2 degrees from the facial

Question 4

Humans have an elliptical-shaped arch with significantly more curvature displayed in the posterior region. The molars have a straighter arch alignment within each quadrant, especially the maxillary molars.

A. Both statements are false
B. The first statement is true; the second statement is false
C. The first statement is false; the second statement is true
D. Both statements are true

Answer 4

A. Both statements are false

Question 5

Which permanent teeth contact some portion of the occlusal surface of a permanent maxillary second premolar?

Answer 5

Mandibular second premolar and mandibular first molar