PMID- 32559034 OWN - Quintessenz Verlags-GmbH CI - Copyright Quintessenz Verlags-GmbH OCI - Copyright Quintessenz Verlags-GmbH TA - Int J Periodontics Restorative Dent JT - International Journal of Periodontics & Restorative Dentistry IS - 1945-3388 (Electronic) IS - 0198-7569 (Print) IP - 4 VI - 40 PST - ppublish DP - 2020 PG - 519-527 LA - en TI - Histologic Outcomes After Guided Bone Regeneration of Peri-implant Defects Comparing Individually Shaped Block Versus Particulate Bone Substitutes LID - 10.11607/prd.4575 [doi] FAU - Laass, Andrea AU - Laass A FAU - Eisner, Barbara M. AU - Eisner B FAU - Hämmerle, Christoph H. F. AU - Hämmerle C FAU - Jung, Ronald E. AU - Jung R FAU - Thoma, Daniel S. AU - Thoma D FAU - Benic, Goran I. AU - Benic G CN - AB - 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. AID - 854566