Cavity Nomenclature

Question 1

cavity margins

Answer 1

junction between walls of cavity prep and external surface of the tooth

Question 2

cavo-surface margin angle

Answer 2

angle formed at any point, on the junction of a preparation with the unprepared surface of the tooth. should be 90* in amalgam

Question 3

line angles

Answer 3

line formed by the junction of two surfaces of a prepared surface

Question 4

point angles

Answer 4

angle formed by the junction of 3 surfaces

Question 5

occlusal/pulpal floor

Answer 5

occlusal floor of the cavity is the surface which is parallel to the occlusal plane and overlies the pulp

Question 6

gingival floor

Answer 6

cavity surface in an approximal cavity which is approximately parallel to the occlusal plane and is bounded externally by the gingival margin

Question 7

pulpal axial wall

Answer 7

axial wall is a cavity surface that is parallel to te long axis of the tooth

Question 8

buccal/lingual axial wall

Answer 8

cavity wall is the cavity surface which is bounded by the cavosurface angle and cavity floor

Question 9

isthmus

Answer 9

least wide part of the occlusal key cut in proximo-occlusal preparation as a retentive form