Random to know

Question 1

First sign of tooth development

Answer 1

6-7 weeks in utero

Question 2

When tooth first erupts, _______ % of root is developed and ________% of tooth calcification is completed

Answer 2

only 50%; 50%

Question 3

6 year old =___ _______ teeth

Answer 3

20 primary

Question 4

9 year old = ______ primary, ______ permanent

Answer 4

12 primary, 12 permanent

Question 5

Maxillary central and lateral incisors, and mandibular molars, are the only permanent teeth where MD > FL

Question 6

The CEJ in a premolar has the greatest curvature toward the occlusal on the MESIAL surface

Question 7

In molars, pulp canals usually join chamber at level apical to the CEJ

Question 8

develops from the lingual lobe

Answer 8

Cingulum:

Question 9

where 3 surfaces of a tooth meet

Answer 9

Point angle:

Question 10

entire crown of the tooth, including part that may not be visible (CEJ to cusp tip)

Answer 10

Anatomical crown:

Question 11

Embrasures:

Anterior teeth: incisal < gingival facial = lingual

Posterior teeth: occlusal = gingival buccal < lingual

Question 12

elevation of gingival tissue found lingual to the embrasure between the maxillary central
incisor

Answer 12

Incisive papilla:

Question 13

triangular shaped gingiva that occupies the gingival embrasure

Answer 13

Gingiva papilla:

Question 14

space that exists mesial to primary maxillary canine and distal to primary mandibular canine

Answer 14

Primate space:

Question 15

In a partially erupted tooth, the clinical crown is ______ than anatomical crown, but during gum
recession, the clinical crown is longer

Answer 15

shorter; longer