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International Journal of Periodontics & Restorative Dentistry



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Int J Periodontics Restorative Dent 40 (2020), No. 4     30. June 2020
Int J Periodontics Restorative Dent 40 (2020), No. 4  (30.06.2020)

Page 519-527, doi:10.11607/prd.4575, PubMed:32559034

Histologic Outcomes After Guided Bone Regeneration of Peri-implant Defects Comparing Individually Shaped Block Versus Particulate Bone Substitutes
Laass, Andrea / Eisner, Barbara M. / Hämmerle, Christoph H. F. / Jung, Ronald E. / Thoma, Daniel S. / Benic, Goran I.
Peri-implant bone dehiscences were grafted either with deproteinized bovine bone mineral (DBBM) block or with particulate DBBM, both covered with a collagen membrane and stabilized with resorbable pins. After 6 months, 17 biopsy samples were included for histologic assessment. Block and particulate DBBM rendered successful tissue integration. Particulate DBBM showed a median of 25.2% of new bone and 31.3% of bone substitute. In the block group, there was a median of 11.5% of new bone and 36.0% of bone substitute. When interpreting the discrepancy in new bone between the groups, the difference in the size of the augmented hard tissue needs to be taken into account.