EXAM 100 QUESTIONS AND CORRECT ANSWERS
(DETAILED ANSWERS)
Mandibular Incisors- labial Incisal angles-sharp mesial and distal incisal angles
Incisal ridge is straight
Mesial and distal sides taper evenly from contact area to
narrow cervix
4. Labial face-smooth with a flattened incisal third.
Middle third is more convex
Lingual surface is smooth
Lingual fossa-found between marginal ridges above cingulum or at
incisal third
Mandibular Incisors-
Lingual
Cingulum is evident
No other tooth in the mouth, except the mandibular
lateral incisor, show so few developmental lines and groves
,Mandibular Incisors- Lingual outline-concave above cingulum
Mesial
Cervical line-curves incisally-less than on mesial
Cervical line-marked, curved incisally
4. Mesial surface of the crown is convex and smooth at incisal
one-third and then flattens
Mandibular Incisors- Distal Cervical line-curves incisally-less than on mesial
Distal surface is similar to the mesial surfaces
Mandibular Incisors- Incisal edge-almost at right angle to line bisecting crown labio-
Incisal lingually
2. Labial surface-see more than lingual surface
Mand lateral incisorslabial Tooth is asymmetrical-right side (M) does not match the left
(D) side of lateral
Lateral incisor is somewhat larger than the mandibular central
(exact opposite of maxillary incisors)
Mesial side is somewhat longer than the distal sideslopes
downwards somewhat
Incisal ridge-slopes downward in a distal direction
Crown is somewhat longer than mandibular central incisor
Mesial Surface and Distal Surface
, Lingual form-poorly formed
Mand Lateral incisorslingual
Cingulum-off centered toward distal
Mand Lateral 1. Incisal edge-is not at approximate right angle to a line
incisorsincisal bisecting the crown labiolingually.
Max canine- labial Crown is narrower mesiodistally than maxillary central incisor
(the mandibular
canine more so than the maxillary canine)
Cusp tip is in a line with the center of the root
Mesial and distal cusp ridge-mesial cusp is shorter
Shallow depressions-mesially and distally (dives labial lobes)
Of the labial lobes, the middle labial lobe is more developed
Developed Ridge runs from tip of cusp to cervical line
7. Mesial half of the crown resembles a portion of an incisor
whereas the distal half resembles a portion of a premolar
Max canine- lingual 1. Cingulum is better developed than maxillary central
2. Marginal ridges are strongly developed
3. Lingual ridge extends to point near the Cingulum
Mesial and Distal lingual fossae located between marginal ridges
and lingual ridge