title: Bone regeneration following damage by polysulphide impression material. A case report.
abstract: Two days after polysulphide rubber impressions had been taken of gold inlay cavities in 6 and 7, a 22-year-old female dental student developed a painful swelling between 5 and 6. A radiograph revealed the presence of an irregular radiopaque body within the cancellous bone of the interdental septum between 5 and 6. At operation, 1 month later, the interdental septum was seen to have been destroyed and its position occupied by impression material and inflammatory tissue. When the lesion was reopened 2 years later to correct slight recurrent pocketing, significant regeneration of bone was found to have occurred.
mesh_terms: D000328:Adult; D001861:Bone Regeneration; D003760:Dental Impression Materials / Q000009:adverse effects*; D005260:Female; D005888:Gingival Pocket / Q000139:chemically induced* / Q000000981:diagnostic imaging; D006801:Humans; D010518:Periodontitis / Q000139:chemically induced*; D011859:Radiography; D012826:Silicone Elastomers; D014070:Tooth / Q000000981:diagnostic imaging / Q000473:pathology
chemical_list: D003760:Dental Impression Materials; D012826:Silicone Elastomers