Retention of a gold inlay is improved by 1. addition of an occlusal dovetail. 2. increasing the parallelism of walls. 3. lengthening the axial walls. 4. placing a gingival bevel.
(2) and (4)
(1) (2) (3)
(1) and (3)
All of the above.
(4) only
1 explanations
oneguy
The retention of a cast restorations (inlay, onlay, crown, etc) of a tooth can be improved by increase the height of axial walls, increase the parallelism of walls, add occlusal dovetail.
oneguy