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.Management Sciences
Category: Permanent Dentition
Crown formation of all permanent teeth except third molars is completed between_____________?
A. Birth to 8 years
B. Birth to 12 years
C. Birth to 6 years
D. 6 years to 12 years
Which of the following is true of permanent first molar’s occlusal surface_____________?
A. Maxillary molar has 2 major fossa, 2 minor fossa, 4 triangular ridges,1 oblique ridge and 5 grooves
B. Mandibular molar has 1 major fossa, 2 minor fossa, 5 triangular ridges and 4 grooves
C. Rhomboidal shape in maxillary molars and hexagonal shape in Mandibular molars
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
On which of the following permanent teeth is it most difficult to distinguish between mesial and distal aspects ?
A. Maxillary central incisor
B. Mandibular central incisor
C. Mandibular lateral incisor
D. Mandibular second premolar
The maxillary lateral incisor is smaller than the maxillary central incisor on all aspects EXCEPT which one of the following______________?
A. Crown length
B. Mesiodistal crown width
C. Faciolingual crown width
D. Root length
In which of the tooth is the mesiodistal measurements is greater lingually than facially_____________?
A. Maxillary 1stpremolar
B. Mandibular 2ndpremolar
C. Mandibular 1st premolar
D. Maxillary 1st molar
The occlusal surface shape of a 3 cusped mandibular second premolar_________________?
A. Oval
B. Elliptical
C. Square
D. Tetrahedral
Largest tooth in the mandibular arch is_________________?
A. Canine
B. Decidous first molar
C. Permanent first molar
D. Third molar
The root trunk of permanent mandibular first molar buccally is______________?
A. Equal is length to the mesial bifurcation of the maxillary first molar
B. Equal is length to the buccal bifurcation of the maxillary first molar
C. equal in length to the crown
D. None of the above
The permanent anterior tooth, which is most 20. Commonly atypical , is_____________?
A. Maxillary central incisor
B. Maxillary lateral incisor
C. Mandibular central incisor
D. Mandibular 1st premolar
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