1. Comparison of allografts and xenografts used for alveolar ridge preservation. A clinical and histomorphometric RCT in humans.
- Author
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Serrano Méndez CA, Lang NP, Caneva M, Ramírez Lemus G, Mora Solano G, and Botticelli D
- Subjects
- Adult, Allografts pathology, Alveolar Process pathology, Alveolar Process surgery, Animals, Cattle, Female, Heterografts pathology, Humans, Male, Alveolar Ridge Augmentation methods, Bone Transplantation methods
- Abstract
Background: Several types of bone grafts are used in ridge preservation procedures., Purpose: To compare the healing of allografts and xenografts applied for alveolar ridge preservation., Materials and Methods: Twenty volunteers in need of extraction of a single-rooted tooth prior to implant installation were randomized into two groups. One group received a deproteinized cancellous bovine bone xenograft embedded in a 10% collagen matrix and the other a demineralized freeze-dried cortical bone allograft. A collagen membrane was used to cover the grafts, flaps were sutured. At baseline and 6 months later, clinical measurements including vertical and horizontal bone dimensions were taken. Histomorphometric analysis was performed., Results: Both groups showed shrinkage of bone dimensions. At mesial, center and distal sites, the vertical changes in dimension were -0.6, 0.5, and -0.1 mm for the allograft and -1.1, -0.4, and -0.9 mm for the xenograft. The horizontal changes in dimensions were -1.4 mm for the allograft and -2.6 mm for the xenograft. New bone and residual graft material were 25.5 ± 10.1% and 33.8 ± 9.4% at the allograft and 35.3 ± 16.8% and 22.2 ± 13.4% at the xenograft sites. None of the differences was statistically significant., Conclusion: Both grafting materials are suitable for the preservation of the alveolar ridge., (© 2017 Wiley Periodicals, Inc.)
- Published
- 2017
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