Questions

The best instrument for removing a large supragingival deposit of calculus on the lingual surface of a mandibular anterior tooth would be:

• A sickle scaler.

Explanation:

1. Sickle Scaler:

   • The sickle scaler is an ideal instrument for removing large supragingival calculus deposits, especially on the lingual surfaces of anterior teeth. Its pointed tip and sharp cutting edges allow it to effectively remove heavy deposits of calculus from flat surfaces like the lingual aspect of mandibular anterior teeth.
   • The pointed design makes it efficient for accessing hard-to-reach areas, such as the lingual surfaces of mandibular anterior teeth.
   • The shank of a sickle scaler is designed for working on the anterior teeth, and its angle allows better control and effective removal of calculus from these surfaces.

2. Why Not Other Instruments:

   • Universal Curette: While effective for both supra- and subgingival deposits, the universal curette may not be as efficient for large supragingival deposits compared to a sickle scaler.
   • Gracey Curette: Generally used for subgingival instrumentation, a Gracey curette is less effective for large supragingival calculus removal, especially on flat tooth surfaces like the lingual surface of mandibular anteriors.

In conclusion, for removing large supragingival deposits of calculus on the lingual surface of a mandibular anterior tooth, the sickle scaler is the best choice due to its design and effectiveness in handling larger deposits on anterior teeth.