Clinical and Histological Evaluation of Extraction Socket Preservation using Bio-Oss® Collagen: A Six Months Study

Aparna, Suresh (2011) Clinical and Histological Evaluation of Extraction Socket Preservation using Bio-Oss® Collagen: A Six Months Study. Masters thesis, Ragas Dental College and Hospital, Chennai.


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BACKGROUND: Socket preservation at the time of extraction is done in an attempt to reduce crestal bone loss, encourage more socket fill, minimize horizontal ridge resorption and ultimately reduce or eliminate the need for further ridge augmentation The present study was to evaluate clinically and histologically the soft and hard tissues parameters following placement of bone replacement graft (Bio-Oss® Collagen) in extraction sockets. MATERIALS AND METHODS: Ten patients selected from the Outpatient Department of Periodontics, Ragas Dental College & Hospital, Chennai, were included in this clinical trial for socket preservation using block xenograft. All these patients were assessed clinically and radiographically prior to the surgical procedure. The clinical parameters assessed were width of keratinised gingiva, distance between tip of papilla to CEJ of adjacent teeth, distance between CEJ of adjacent teeth and gingival margin, gingival thickness, buccolingual crest width 2m from the crest and 4mm from the crest, vertical plate labial position and the number of existing walls of the extraction socket at baseline,3 months and 6 months follow up. Histological analysis of the augmented site was done during the surgical re-entry for implant placement after 6 months. Statistical analysis was done using the Wilcoxon Signed-Rank Sum Test. RESULTS: At the end of 3 months, there was significant decrease in the width of keratinized gingiva (from 4.00mm ±0.54 to 2.88mm± 0.35). There was significant average decrease in the horizontal width at 2mm, which was more evident in the midbuccal region (from 7.75mm±1.28 to 6.25mm ±1.39). However no significant difference was observed in the horizontal width values at 4mm from the crest. Histological analysis revealed new bone formation along with minimal residual graft material; confirming the osteoconductive property of the bone substitute. CONCLUSION: This study proved the regenerative potential of cancellous –bone block placed in extraction sockets; and also its role in maintaining favourable alveolar bone topography for implant placement .Bio-Oss®Collagen seems to have the potential to limit but not avoid completely the postoperative contour shrinkage.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Extraction socket ; socket preservation ; bone substitutes ; bone regeneration ; endosseous implants.
Subjects: DENTAL > Periodontology
Depositing User: Kambaraman B
Date Deposited: 13 May 2018 08:27
Last Modified: 13 May 2018 11:02

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