A. 1 – 1.5 mm
B. 2 mm
C. 2 – 2.3 mm
D. 3 mm
✅ The correct answer is option A. 1 – 1.5 mm.
Oral Anatomy
In an ideal occlustion buccal cusps of maxillary teeth, occlude with______________?
A. Fossa and rdges
B. Grooves and embrasures
C. Lingual cusps of mandibular teeth
D. Occlusal pits and fissures of mandibular teeth
✅ The correct answer is option B. Grooves and embrasures.
Over jet is defined as______________?
A. Horizontal overlap
B. Vertical overlap
C. Transverse plane discrepancy
D. All the above
✅ The correct answer is option A. Horizontal overlap.
In the triangle formed by the projection of the orifices of the canals of a maxillary molar, the_________________?
A. Line connecting mesial with distal is longest
B. Line connecting mesial with lingual is longest
C. Line connecting distal with lingual is longest
D. Angle at the mesio facial canal is obtuse
✅ The correct answer is option B. Line connecting mesial with lingual is longest.
The direction of enamel rods in decidous teeth is_____________?
A. Same as permanent teeth
B. Inclined in an apical direction in the cervical third of crown
C. Inclined in an occlusal direction in the cervical third of crown
D. None of the above
✅ The correct answer is option C. Inclined in an occlusal direction in the cervical third of crown.
Group function occlusion is common in_____________?
A. 10 – 14 years
B. 15 -25 years
C. Above 30 years
D. Edentulous patients
✅ The correct answer is option C. Above 30 years.
Which of the portions of the intra articular disc is the thinnest ?
A. Anterior
B. Intermediate
C. Posterior
D. retrodiscal
✅ The correct answer is option B. Intermediate.
Which among the following is NOT a common finding of the decidous dentition ?
A. Tight contacts, absence of spacing
B. Shallow overjet and overbite
C. Flush terminal plane
D. Ovoid arch form
✅ The correct answer is option A. Tight contacts, absence of spacing.
Longest tooth of the maxillary arch is_____________?
A. Permanent incisor
B. First premolar
C. Permanent canine
D. Decidous incisor
✅ The correct answer is option C. Permanent canine.
Before eruption the position of permanent mandibular incisor buds relative to primary incisors is_____________?
A. Superior and facial
B. Inferior and facial
C. Superior and lingual
D. Inferior and lingual
✅ The correct answer is option D. Inferior and lingual.