Which of the following is an example of a line angle?
A) Mesiolabioincisal
B) Buccolingual
C) Mesiodistal
D) Labioincisal
E) Inciso-occlusal

Question

Quizplus · Accepted Answer

Only the labioincisal description qualifies as a line angle because line angles separate two adjacent surfaces of a tooth by forming a junction.The labioincisal line angle represents the junction of the labial surface of an anterior tooth with its incisal edge;note these are two adjacent surfaces on anterior teeth.Buccolingual,inciso-occlusal,and mesiodistal junctions are not adjacent surfaces.A mesiolabioincisal line angle is not a line angle because it represents the junction of three adjacent surfaces and is thus a point angle.

Which of the Following Is an Example of a Line