Histologic Outcomes After Guided Bone Regeneration of Peri-implant Defects Comparing Individually Shaped Block Versus Particulate Bone Substitutes

Laass, Andrea; Eisner, Barbara; Hämmerle, Christoph; Jung, Ronald; Thoma, Daniel; Benic, Goran

doi:10.11607/prd.4575

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Laass, A., Eisner, B., Hämmerle, C., Jung, R., Thoma, D., & Benic, G. (2020). Histologic Outcomes After Guided Bone Regeneration of Peri-implant Defects Comparing Individually Shaped Block Versus Particulate Bone Substitutes. International Journal of Periodontics and Restorative Dentistry, 40(4), 519–527. https://doi.org/10.11607/prd.4575

Abstract

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