cavosurface angle for composite resin restoraions should be..
1.right angles
2.acute angles
3 obtuse angles..
i feel it should be obtuse angle in order to allow maximum surface area for etching...
answer key says right angles//
please explain ...
1.right angles
2.acute angles
3 obtuse angles..
i feel it should be obtuse angle in order to allow maximum surface area for etching...
answer key says right angles//
please explain ...