2026-06-29T02:13:40Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1262252025-11-20T00:45:21Zcom_20.500.14352_14col_20.500.14352_15

Hard and soft tissue healing around teeth prepared with the biologically oriented preparation technique and restored with provisional crowns: An in vivo experimental investigation Palombo, David Rahmati, Maryam Vignoleti, Fabio Sanz Esporrín, Javier Salido Rodríguez-Manzaneque, María Paz Haugen, Havard Jostein Sanz Alonso, Mariano Aim: To evaluate the hard and soft tissues healing around teeth prepared with the biologically oriented preparation technique (BOPT) versus the chamfer technique versus non-prepared teeth. Materials and methods: Thirty-two teeth in eight beagle dogs were randomly prepared with the BOPT (test = 16) or chamfer (control = 16) techniques and covered with polymethylmethacrylate crowns as provisional restorations. Sixteen negative controls (non-prepared teeth) were also used for comparison. Histological description and histomorphometrical measurements of the periodontal tissues were collected at 4 and 12 weeks in 7 out of 8 dogs, including the soft tissue height and thickness, and the horizontal and vertical bone dimensions. Results: When compared with negative controls, test and control preparation techniques exhibited a more apical location of the free gingival margin with respect to the cement-enamel junction (∆ = 1.1 mm for both groups at 4 weeks (p < .05), 0.99 mm for the test group (p = .043) and 0.20 mm for control group (p = 1.000) at 12 weeks). There were no significant differences between test and control groups with respect to vertical and horizontal histometric measurements. Conclusions: The BOPT and chamfer tooth preparation protocols induced similar qualitative and quantitative changes in the healing of the supra-crestal soft tissue complex, when compared with non-prepared teeth. Despite the limited amount of power, it appeared that differences between the tested preparation techniques were not statistically significant. 2025-11-19T10:18:15Z 2025-11-19T10:18:15Z 2025-11-19T10:18:15Z 2023-05-30 journal article https://hdl.handle.net/20.500.14352/126225 0303-6979 10.1111/jcpe.13825 1600-051X eng Palombo D, Rahmati M, Vignoletti F, Sanz-Esporrin J, Salido MP, Haugen HJ, Sanz M. Hard and soft tissue healing around teeth prepared with the biologically oriented preparation technique and restored with provisional crowns: An in vivo experimental investigation. J Clin Periodontol. 2023 Sep;50(9):1217-1238. doi: 10.1111/jcpe.13825 http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 International Wiley