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Shape of the occlusal surface of the permanent maxillary first molar is ______ ?
A. Rhomboidal
B. Triangular
C. Oval
D. TrapezoidalWhat is the functional form of anterior teeth from the mesial or the distal aspect_____ ?
A. Elliptical
B. Rhomboidal
C. Wedge- shaped
D. TrapezoidalWhich line angle area is most acute when a permanent maxillary second molar is viewed occlusally?
A. Mesiolingual
B. Distolingual
C. Mesiofacial
D. DistofacialMaxillary molar crown of an early fossil primate featured a trigone made of three main cusps, these cusps were _______ ?
A. Mesiobuccal, Distobuccal and Mesiolingual
B. Mesiolingual, Mesiobuccal and distolingual
C. Distrobuccal, distolingual and Mesiolingual
D. Distolingual, Mesiobuccal, and Linguo buccalLingual cusp of lower first premolar is compared to the development of ______ ?
A. Lingual cusp of second premolar
B. Cingulam of canine
C. Cusp of carabelli
D. Distolingual cusp of molarsGeometric outline of the buccal surface of posterior teeth are _____ ?
A. Quadrilateral
B. Square
C. Trapezoidal
D. RhomboidalFourth canal is present in ____ ?
A. Distal root of mandibular first molar
B. Mesiobuccal roots of maxillary first molar
C. a and b
D. None of themPermanent mandibular second molar differs from the permanent mandibular first molar in number of ______ ?
A. Marginal ridges
B. Cusps
C. Roots
D. Lingual groovesMost constant and valuable trait to differentiate among maxillary first, second and third molars i ____ ?
A. Relative position of the distolingual grooves
B. Comparative size of the cusp of carabelli
C. Number of roots
D. Depth of central fossaeWhich of the following has a nonfunctional cusp ______ ?
A. Maxillary second premolar
B. Mandibular first premolar
C. Mandibular canine
D. None of them