DH 105 - Midterm (Study Guide) Questions with Correct Answers

DH 105 - Midterm (Study Guide) Questions
with Correct Answers 2026-2027
Mesial cusp ridge - CORRECT ANSWER -
runs from the cusp tip toward the mesial side of the tooth



Distal cusp ridge - CORRECT ANSWER -
runs from the cusp tip toward the distal side of the tooth



Buccal cusp ridge - CORRECT ANSWER -
runs from the cusp tip toward the buccal side of the tooth



Triangular ridge - CORRECT ANSWER -runs from the cusp tip to the central groove



Transverse ridge - CORRECT ANSWER -made from 2 triangular ridges



Structures of the periodontium - CORRECT ANSWER -
gingiva, cementum, periodontal ligament, alveolar bone



Periodontal ligament space - CORRECT ANSWER -
space between the root and bone, seen radiographically



Borders of the lingual fossa of an incisor tooth - CORRECT ANSWER -
cingulum, mesial marginal ridge, distal marginal ridge, incisal edge/ridge



Embrasures - CORRECT ANSWER -
spaces formed around the point of contact between proximal surfaces of adjacent teeth

, Curvature of the CEJ is greater on the X 2 X 2 X 2 X 2 X2 X 2 X 2 X 2 than on the
X2 X 2 X 2 X 2 - CORRECT ANSWER -
X
2 X2 X 2 X 2




mesial; distal
X2 X 2




The facial height of contour/crest of curvature on ALL teeth is in the -
X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




CORRECT ANSWER - cervical third
X 2 X 2 X 2 X2 X 2




Order of anatomic landmarks - CORRECT ANSWER -cervix, trunk, furcation, apex
X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




Enamel - CORRECT ANSWER -most calcified; outer surface of the crown of the tooth
X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




Dentin - CORRECT ANSWER - X 2 X 2 X 2 X 2




makes up bulk of the tooth; under the enamel and cementum
X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




Cementum - CORRECT ANSWER -outer surface of the root of the tooth X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




Pulp - CORRECT ANSWER -carries the blood supply and nerve supply of the tooth
X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




Posterior lingual height of contour is in the - CORRECT ANSWER -middle third
X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




Classes of teeth - CORRECT ANSWER -incisors, canines, premolars, molars
X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




Incisors are made of how many lobes - CORRECT ANSWER -4 - 3 facial and 1 lingual
X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




All incisor teeth:
X 2 angle more square/acute than the X 2 X 2 X2 X 2 X 2 X 2 X 2 X 2 angle -
X
2 X2




CORRECT ANSWER -mesioincisal; distoincisal
X2 X 2 X 2 X 2




The distoincisal angle is more rounded than mesioincisal angle on all incisors EXCEPT -
X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




CORRECT ANSWER -mandibular central incisors
X2 X 2 X 2 X 2 X 2