Dental When preparing a 3/4th crown on maxillary incisor tooth, the proximal grooves should generally be parallel to the A Long axis of the tooth B Gingival 2/3rd of the labial surface C Incisal 2/3rd of the labial surface D Short axis of the tooth 💡 Explanation When preparing a 3/4th crown on maxillary incisor tooth, the proximal grooves should generally be parallel to the ✓ Correct Answer: C. Incisal 2/3rd of the labial surface