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.Management Sciences
Category: Oral Anatomy
The term diphydont means____________?
A. Second dentition
B. Two same sets of dentition
C. Two separate sets of dentition
D. More than two sets of dentition
Primary teeth differ from permanent teeth in following aspects ?
A. Thickness of enamel and dentin
B. Pulp chambers are longer
C. Roots are flaring
D. All of the above
The shape of the occlusal surface of the permanent maxillary first molar is___________?
A. Oval
B. Trapezoidal
C. Triangular
D. Rhomboidal
Transverse ridge is prominent on occlusal surface of which of the following decidous teeth ?
A. Mandibular first molar
B. Maxillary first molar
C. Mandibular second molar
D. Maxillary second molar
First permanent molars begin to calcify at ______________?
A. 6 months of intra utrerine life
B. At birth
C. Before decidous incisors
D. About 1 year after birth
The maxillary molar crown of an early fossil primate featured a trigone made of three main cusps, these cusps were_____________?
A. Distrobuccal, distolingual and Mesiolingual
B. Distolingual, Mesiobuccal, and Linguo buccal
C. Mesiobuccal, Distobuccal and Mesiolingual
D. Mesiolingual, Mesiobuccal and distolingual
The interdental papilla is located in the______________?
A. Facial embrasure
B. Lingual embrasure
C. Cervical embrasure
D. Occlusal embrasure
The contact area on the distal surface of a maxillary first premolar should be placed in________________?
A. Middle 3rd of proximal surface with lingual embrasure greater than the facial embrasure
B. Occlusal 3rd of proximal surface with the lingual embrasure greater than facial embrasure
C. Occlusal 3rd of proximal surface with facial embrasure greater than lingual embrasure
D. Middle 3rd with facial embrasure greater than the lingual embrasure
Tooth with most variable occlusal anatomy________________?
A. Maxillary third molar
B. Mandibular third molar
C. Maxillary second premolar
D. Mandibular second premolar
In how many years, the central incisors erupt as permanent teeth ______________?
A. 8-9 years
B. 10-12 years
C. 6-7 years
D. 17-25 years
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