Fig. 3.

Diagnosis of Case 2 (photograph and radiograph). a Intraoral view of Case 2 at the initial visit. A 7 × 6-mm lesion was observed on the buccal surface of the maxillary right canine and first premolar region with healthy-colored mucosa. b Dental radiograph of Case 2. No obvious bone resorption was observed at the maxillary right canine and first premolar region