Cavity Preparation Flashcards
Tooth preparation that require specific form, depth and marginal form
Conventional preparation
Conventional preparation needed in
amalgam, gold or ceramic restorations
Tooth preparation has less need for specific depth, wall and marginal form
Modified preparations
Modified preparations is needed in
bonded direct restorations as composite or glass ionomer
the prepared surface that
extends to the external tooth surface.
external wall
the internal wall parallel to the long axis of the tooth.
axial wall
prepared wall that is reasonably horizontal and perpendicular to the occlusal forces that are directed occlusogingivally (generally parallel to the long axis of the tooth)
floor (or seat)
junction of two planar
surfaces of different orientation along a line
line angle
the line angle whose apex points into the tooth
internal line angle
the junction of three planal surfaces of different orientation
point angle