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Re-osseointegration following reconstructive surgical therapy of experimental peri-implantitis. A pre-clinical in vivo study



Re-osseointegration following reconstructive surgical therapy of experimental peri-implantitis. A pre-clinical in vivo study



Clinical Oral Implants Research 30: 447–456



to evaluate the effect of bone substitute materials on hard and soft tissue healing in reconstructive surgical therapy of experimental peri-implantitis at implants with different surface characteristics. Six female, Labrador dogs were used. Three months after tooth extraction, 4 implants with 2 different surface characteristics (A and B) were installed on each side of the mandible. Experimental peri-implantitis was induced 3 months later. During surgical treatment of peri-implantitis the implants were cleaned with curettes and cotton pellets soaked in saline. The implant sites were allocated to one of 4 treatment categories; (i) Group C; no augmentation, (ii) Group T1; bone defect filled with deproteinized bovine bone mineral (iii) Group T2; bone defect filled with a biphasic bone graft material, (iv) Group T3; bone defect filled as T1 and covered with a collagen membrane. Clinical and radiological examinations were performed and biopsies were obtained and prepared for histological analysis 6 months after peri-implantitis surgery. Implant B (smooth surface) sites showed significantly (i) larger radiographic bone level gain, (ii) enhanced resolution of peri-implantitis lesions and (iii) larger frequency of re-osseointegration than implant A (moderately rough surface) sites. Implant B sites also showed superior preservation of the mucosal margin. Differences between bone substitute materials and control procedures were overall small with limited advantages for T1 and T2 sites. Healing following reconstructive surgical treatment of experimental peri-implantitis was superior around implants with a smooth surface than implants with a moderately rough surface. Benefits of using bone substitute materials during surgical therapy were overall small. This article is protected by copyright. All rights reserved.

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Accession: 066671897

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PMID: 30963619

DOI: 10.1111/clr.13430


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