PURPOSE: There is a need for more studies evaluating the marginal bone loss (MBL) of rehabilitations in the posterior regions of extremely resorbed maxillae and mandibles supported by short-length dental implants with a high crown/implant ratio (C/I-R). The aim of this study was to evaluate the influence of the C/I-R in implants on MBL considering dental implants with 4 mm of width and 7 mm of length. MATERIALS AND METHODS: This retrospective cohort study included 59 patients (mean age of 52.8 years) rehabilitated with at least one implant 4 mm in width and 7 mm in length, with an anodically oxidized surface and external connection on the premolar or molar positions, supporting a fixed prosthesis, and in function for a period of 36 months. Periapical radiographs at 36 months were used to calculate the C/I-R and MBL. The Spearman correlation coefficient was used to test the correlation between C/I-R and MBL. The level of significance was set at 5%. RESULTS: One hundred eighteen implants from 59 patients were evaluated. The mean ± SD MBL was 0.67 ± 0.63 mm. The C/I-R mean ± SD was 2.53 ± 0.79 mm. Thirty implants presented a C/I-R ≤ 2, while 88 implants had a C/I-R > 2. A weak nonsignificant inverse correlation (r = -0.081; P = .383, Spearman) was registered between C/I-R and MBL. CONCLUSION: Within the limitations of this study, it is possible to conclude that implant-supported fixed prostheses with C/I-R > 2 do not correlate positively with MBL.
PURPOSE: There is a need for more studies evaluating the marginal bone loss (MBL) of rehabilitations in the posterior regions of extremely resorbed maxillae and mandibles supported by short-length dental implants with a high crown/implant ratio (C/I-R). The aim of this study was to evaluate the influence of the C/I-R in implants on MBL considering dental implants with 4 mm of width and 7 mm of length. MATERIALS AND METHODS: This retrospective cohort study included 59 patients (mean age of 52.8 years) rehabilitated with at least one implant 4 mm in width and 7 mm in length, with an anodically oxidized surface and external connection on the premolar or molar positions, supporting a fixed prosthesis, and in function for a period of 36 months. Periapical radiographs at 36 months were used to calculate the C/I-R and MBL. The Spearman correlation coefficient was used to test the correlation between C/I-R and MBL. The level of significance was set at 5%. RESULTS: One hundred eighteen implants from 59 patients were evaluated. The mean ± SD MBL was 0.67 ± 0.63 mm. The C/I-R mean ± SD was 2.53 ± 0.79 mm. Thirty implants presented a C/I-R ≤ 2, while 88 implants had a C/I-R > 2. A weak nonsignificant inverse correlation (r = -0.081; P = .383, Spearman) was registered between C/I-R and MBL. CONCLUSION: Within the limitations of this study, it is possible to conclude that implant-supported fixed prostheses with C/I-R > 2 do not correlate positively with MBL.
Authors: Guillermo Pardo-Zamora; Antonio José Ortiz-Ruíz; Fabio Camacho-Alonso; José Francisco Martínez-Marco; Juan Manuel Molina-González; Núria Piqué-Clusella; Ascensión Vicente-Hernández Journal: Int J Environ Res Public Health Date: 2021-05-26 Impact factor: 3.390
Authors: Jakub Hadzik; Maciej Krawiec; Konstanty Sławecki; Christiane Kunert-Keil; Marzena Dominiak; Tomasz Gedrange Journal: Biomed Res Int Date: 2018-05-16 Impact factor: 3.411
Authors: Vittorio Moraschini; Carlos Fernando de Almeida Barros Mourão; Pietro Montemezzi; Ingrid Chaves Cavalcante Kischinhevsky; Daniel Costa Ferreira de Almeida; Kayvon Javid; Jamil Awad Shibli; José Mauro Granjeiro; Monica Diuana Calasans-Maia Journal: Healthcare (Basel) Date: 2021-03-12