| The purpose of this study was to compare alveolar ridge alteration after ridge preservation using autogenous bone covered with a connective tissue graft (CT) or acellular dermal matrix (ADM) membrane. Eighteen patients, with 20 non-molar teeth needing extraction, participated in the study. After the extraction, the sockets were debrided and grafted with autogenous bone, then covered with a CT or ADM membrane. After the healing period, measurements were performed of alveolar ridge changes. Soft tissue and bone core biopsies were obtained for histomorphometric analysis. Sixteen subjects (18 sites) completed the study. No statistical difference was found between the two treatment groups for any of the parameters when student t-tests were completed for statistical analysis. Histomorphometric analysis revealed a mean 40.67% versus 50.76% vital bone for CT and ADM, respectively. Microscopic evaluation of soft tissue biopsies indicated ADM was still present in the soft tissue between 16 and 20 weeks. |
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