A. 2 mm less distally than mesially
B. 1 mm less distally than mesially
C. 2 mm less lingually than buccally
D. 1 mm less lingually than buccally
✅ The correct answer is option B. 1 mm less distally than mesially.
Oral Anatomy
Oblique ridge in maxillary first molar joins which of the following cusps____________________?
A. DL and DB
B. ML and MB
C. ML and DB
D. DL and MB
✅ The correct answer is option C. ML and DB.
In normal occlusion , with which grooves / surface of the permanent mandibular first molar does the mesiobuccal cusp of the permanent maxillary first molar occlude______________?
A. Distobuccal groove
B. Mesial surface
C. Mesiobuccal surface
D. Transverse groove
✅ The correct answer is option C. Mesiobuccal surface.
A distinguishing characteristic of a maxillary first premolar that identifies it as right or left is the________________?
A. Height of the lingual cusp
B. Mesial inclination of the lingual cusp
C. Flattened area beneath the contact on the distal surface
D. Greater length of the mesial cusp ridge on the lingual cusp ( AIPG- 98)
✅ The correct answer is option B. Mesial inclination of the lingual cusp.
Which of the following is dental formula of a 9 years old child_____________?
A. 6 EDC21/ 6EDC21
B. 6EDCBA/ 6EDC21
C. EDC21/EDC21
D. 76EDC21/ 7EDC21
✅ The correct answer is option A. 6 EDC21/ 6EDC21.
Tooth with most variable occlusal anatomy________________?
A. Maxillary third molar
B. Mandibular third molar
C. Maxillary second premolar
D. Mandibular second premolar
✅ The correct answer is option A. Maxillary third molar.
The highest ( longest ) and sharpest cusp on the decidous mandibular first molar is____________?
A. Mesiolingual
B. Distolingual
C. Mesiobuccal
D. Distobuccal
✅ The correct answer is option A. Mesiolingual.
Which of the following features of a permanent maxillary lateral incisor aids in distinguishing it from a mandibular lateral incisor ?
A. Flattened root
B. More pronounced lingual fossa
C. Thinner incisal ridge
D. Sharper proximal incisal angles
✅ The correct answer is option B. More pronounced lingual fossa.
The pulp of first primary molar contains________________?
A. Four pulp horn and three root canal
B. Three pulp horn and three root canal
C. Two pulp horn and two root canal
D. Two pulp horn and three root canal
✅ The correct answer is option A. Four pulp horn and three root canal.
Which teeth show less curvature on the crown above the cervical line than any other teeth_____________?
A. Maxillary anterior
B. Mandibular canine
C. Mandibular anteriors
D. Maxillary canine
✅ The correct answer is option C. Mandibular anteriors.