Indications:

Unilateral or bilateral free ends are missing, especially suitable for patients with small buccal-lingual diameters, long distances or small vertical distances;

The undercut of the fixed restoration abutment is too large, and the patient is reluctant to extract the ridge and grind more tooth tissue.

Precision attachment is a restoration method between fixed restoration and movable restoration. There is no snap ring, and adjacent teeth need to be involved, which requires high manufacturing process and is expensive.