Palombo, DavidRahmati, MaryamVignoleti, FabioSanz Esporrín, JavierSalido Rodríguez-Manzaneque, María PazHaugen, Havard JosteinSanz Alonso, Mariano2025-11-192025-11-192023-05-30Palombo 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.138250303-697910.1111/jcpe.13825https://hdl.handle.net/20.500.14352/126225Aim: 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.engAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/journal article1600-051Xhttps://doi.org/10.1111/jcpe.1382537253614https://onlinelibrary.wiley.com/doi/10.1111/jcpe.13825https://pubmed.ncbi.nlm.nih.gov/37253614/open access616.314.17-008.1:[616.314-089.28+ 616.314-089.843]Animal modelComparativeDental prosthesisDental restorationHistologyTemporaryOdontología (Odontología)PeriodonciaPrótesis dentalImplantes dentalesAparatos y material odontológicos3201 Ciencias Clínicas3213 Cirugía3311.03 Instrumentos Para Odontología