Dental What is the major difference between a class V cavity preparation for amalgam and one for composite resin by the acid-etch technique? A Depth B Convenience form C Position of retentive points D Angulation of enamel cavosurface margins 💡 Explanation What is the major difference between a class V cavity preparation for amalgam and one for composite resin by the acid-etch technique? ✓ Correct Answer: D. Angulation of enamel cavosurface margins