A. First molar
B. Central incisors
C. Canines
D. Premolars
✅ The correct answer is option C. Canines.
Oral Anatomy
The tooth that is commonly seen in an abnormal relation and contact with its adjacent teeth of the same arch is ________________?
A. Mandibular first premolar
B. Mandibular lateral incisor
C. Maxillary central incisor
D. Maxillary lateral incisor
✅ The correct answer is option D. Maxillary lateral incisor.
Retrusion of mandible is achieved by _______________?
A. Lateral pterygoid
B. Temporalis
C. Masseter
D. None of the above
✅ The correct answer is option B. Temporalis.
Root completion of the mandibular first molar takes place by the age_______________?
A. 7-8 years
B. 8-9 years
C. 9-10 years
D. 10 – 11 years
✅ The correct answer is option C. 9-10 years.
Pulp chambers and roots canals in decidous teeth______________?
A. Wide and deep
B. Shallow and narrow
C. Wide and narrow
D. Shallow and wide
✅ The correct answer is option D. Shallow and wide.
The eruption age of maxillary permanent lateral incisor is________________?
A. 8-9 years
B. 6-7 years
C. 10-11 years
D. 8-9 months
✅ The correct answer is option A. 8-9 years.
According to Schour & Massler the crown completion of both permanent maxillary and mandibular first molars is________________?
A. 1½ 2 years
B. 2½ – 3 years
C. 3-4 years
D. 3-5 years
✅ The correct answer is option B. 2½ – 3 years.
The key to occlusion is_______________?
A. Maxillary permanent first molar
B. Maxillary permanent second molar
C. Maxillary primary first molar
D. Maxillary primary second molar
✅ The correct answer is option A. Maxillary permanent first molar.
The largest embrasure in posterior teeth is the__________?
A. Buccal
B. Distal
C. Lingual
D. Occlusal
✅ The correct answer is option C. Lingual.
Single central pit is formed on occlusal surface of_______________?
A. Mandibular first premolar
B. Mandibular second premolar
C. Maxillary first premolar
D. Maxillary second premolar
✅ The correct answer is option B. Mandibular second premolar.