Violation
The contour of an occlusal rest area should be
flat and forming an obtuse angle to the proximal surface of the tooth
rounded and spoon shaped in general outline.
angular and box shaped with precision type vertical walls
The contour of an occlusal rest area should be
flat and forming an obtuse angle to the proximal surface of the tooth
rounded and spoon shaped in general outline.
angular and box shaped with precision type vertical walls