Fig. 2
Case of a localised periodontal defect with a buccal sinus affecting tooth 23. a) The PA showed suboptimal obturation of tooth 23, but no frank apical pathology. b) Due to the localised distal probing depth and pattern of bone loss, a root fracture was suspected. Surgical exploration was undertaken and a broad circumferential defect was found circling the mid-third of the root. c, d) The root was stained, but no fracture was visualised. Guided tissue regeneration was undertaken. At one year, the sinus had resolved and the probing depths were ≤4 mm. e, f) Although the initial healing appears positive, the patient was warned of possible future failure given a root fracture was still suspect; although, one was not identified
