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Questions
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Answer
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On the occlusal surface of posterior teeth triangular fossa are found
along the |
Proximal to marginal ridge
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If found, in anterior teeth, the triangular fossa is usually found on
the |
Palatal surface at edge of lingual fossa
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A long valley like depression in any surface of tooth often between
ridges/ cusp is the |
Sulcus
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A sulcus at its junction of its incline usually has a
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Groove
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A shallow line between primary parts of a crown or a root is the
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Developmental groove
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A shallow line on any surface of tooth that does not demarcate
primary parts of a tooth is the |
Supplemental groove
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The pinpoint depressions along the developmental grooves are the
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Pits
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Lobes are primary section of formation in the development of crown
and are represented by the |
Cusp; Mamelons; Cingulum
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The number of line angles and point angles in an anterior teeth
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6; 4
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The number of line angles and point angles in a posterior teeth
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8; 4
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The important indicator(s) of dental age used clinically often is
(are) |
Calcification extent; Level of root formation; Eruption of teeth
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The evidence of calcification for a deciduous dentition is observed
by |
4th month of intra uterine life. Near the end of the 6th month of
intrauterine life all deciduous teeth would have began their development. |
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The human deciduous mandibular central incisors erupt by
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6 months
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The human deciduous canine erupt by
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16 months
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The general order of deciduous teeth eruption is
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Central incisor, lateral incisor, 1st molar, canine, 2nd molar
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The deciduous teeth is use for approximately for
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5 to 11.5 years
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Second permanent tooth to erupt in the oral cavity is
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Mandibular central incisor. First molar is the first permanent teeth
to erupt in the oral cavity. |
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The follicles of developing anterior teeth are positioned
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Lingual. The developing premolars are placed within the bifurcation
of deciduous molars. |
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The general eruption schedule of permanent dentition in mandible is
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6123457. The maxillary schedule is 6124537
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The teeth that is subject to many anomalies and variation in the form
is the |
Permanent third molars
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Prof. Rooban Thavarajah
Oral and Maxillofacial Pathologist
List