Dental The proximal retention grooves for anterior 3/4″ crown are placed A Parallel to middle and incisal thirds B Parallel to long axis of tooth C Parallel to middle and cervical thirds D Parallel to cervical, middle and incisal thirds 💡 Explanation The proximal retention grooves for anterior 3/4" crown are placed ✓ Correct Answer: A. Parallel to middle and incisal thirds