Clinical  and Radiographic Findings

The patient presented with a generally healthy dentition and average plaque control for a teenaged boy. The periodontal health was unremarkable except for a 10+ mm pocket located at the distobuccal of tooth #31, which was found to have subgingival inflammation and suppuration during probing. The contra-lateral tooth # 18 had a 5 6 mm probing depth with thickened retro-molar gingiva on the distal root surface. Radiographically, the lesion between teeth #s 31 32 appears as a narrow, buccal curve along the tooth with an osseous defect, with the developing crown of tooth #32 lying superiorly and horizontally impacted. The lamina dura and the periodontal ligaments around teeth #s 18 and 31 appear to be intact. No radiographic change was apparent around tooth #18 (Fig 2). Tooth # 31 is vital and responded so endodontically to the application of ice.

Figure 2.  Although a 5-6 mm probing depth was detected at the buccal aspect of tooth #18, there are no radiographic changes to correspond to it.