Clinical analysis of extraction site preservation using Bio-Oss Collagen after extraction of maxillary molars

doi:10.12337/zgkqzzxzz.2023.04.004

Abstract

Abstract: Objective To investigate a clinical treatment method for extraction site preservation using Bio-Oss Collagen after extraction of maxillary molars. Methods The clinical data of 6 cases were retrospectively analyzed, and all 6 patients were treated with Bio-Oss Collagen for extraction site preservation after extraction of maxillary molar teeth. These six cases met the following characteristics: the affected tooth was destructed in the alveolar bone in the area of its furcation due to periodontitis or combined periodontal-endodontic lesions, and needed to be extracted; the remaining bone height in the top central part of the alveolar ridge was less than 3.5 mm after the extraction of the affected tooth; the bone walls of the buccal, lingual, mesial and distal parts of the extraction socket were nearly intact. After extraction of the affected tooth, the granulation tissue in the alveolar socket was thoroughly removed. Bio-Oss Collagen was placed in the alveolar sockets and the soft tissues were cross-sutured to hold the graft in place. The sutures are removed 7-10 days after surgery. CBCT was taken preoperatively, immediately postoperatively and at six months postoperatively. The vertical height of the remaining alveolar ridge was measured using Mimics 20.0 at five sites: buccal and lingual in the coronal position, mesial and distal in the median sagittal position, and central. Results Primary healing was obtained in all six patients. At 6 months after extraction, the patients had well healed alveolar sockets, normal gingival color and texture, and no change in attached gingival width. CBCT taken at 6 months after extraction showed no change or a small increase in alveolar crest height at the buccal, lingual, mesial and distal sites, but an increase of 3.48 to 7.89 mm at the central site, among the 5 sites measured. Conclusion After extraction of maxillary molars, Bio-Oss Collagen can be used for extraction site preservation if the surrounding bone wall height is adequate. This method causes less trauma, has a shorter operation time, and its results are similar to those of conventional extraction site preservation.

Key words: Extraction site preservation, Bio-Oss Collagen, Maxillary molar, Tooth extraction, Dental implant

Yu Jiuyue, Jia Wenhao, Fang Li, Wang Jian, Li Jiangming, Liu Han, Guo Qili. Clinical analysis of extraction site preservation using Bio-Oss Collagen after extraction of maxillary molars[J]. Chinese Journal of Oral Implantology, 2023, 28(2): 90-96.

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