Tooth morphology

Question	Answer
In the facial and lingual aspect the permanent teeth are ________ shaped with the base of crown at cervical margin being ________ of uneven side.	Trapezoid; shortest. The working surface is longest of the uneven side of the trapezoid
A single opposing tooth in the opposite arch is	Mandibular central incisors; Permanent maxillary third molars; Deciduous maxillary second molars. Each tooth in dental arch has two antagonists in the opposite arch except the above mentioned teeth.
From the mesial and distal aspect the permanent anterior teeth are	Triangular
The point at which the contact area is bisected will depend on the	Outline form of occlusal aspect; Alignment of teeth; Occlusal relation
Normal intact interproximal spaces are	Triangular
A buccal view of an interproximal contact area will demonstrate the size and location of the contact in the	Mesiodistal aspect
The embrasure (s) formed by 2 teeth in the same arch when in contact, their curvature adjacent to the contact area will form the	Occlusal embrasure; Facial and lingual embrasure; Gingival embrasure
Normal intact healthy interproximal spaces are filled by	Inter dental papillae
Radiographic distance between from crest of alveolar bone to cementoenamel junction in a healthy intact dentition is approximately	1 to 1.5 millimeters
The factors that maintain the gingival tissue in spite of micro-trauma and microbial invasion include	Keratinization of gingival; Density of gingival; Elasticity of gingiva