Radiographic evaluation of marginal bone levels around implants supporting splinted fixed bridges: A retrospective study on 412 implants.

Autor: Manfredini M; Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Implant Center for Edentulism and Jawbone Atrophies, Maxillofacial Surgery and Odontostomatology Unit, Milan, Italy.; Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy., Poli PP; Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Implant Center for Edentulism and Jawbone Atrophies, Maxillofacial Surgery and Odontostomatology Unit, Milan, Italy.; Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy., Beretta M; Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Implant Center for Edentulism and Jawbone Atrophies, Maxillofacial Surgery and Odontostomatology Unit, Milan, Italy.; Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy., Rossi F; Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Implant Center for Edentulism and Jawbone Atrophies, Maxillofacial Surgery and Odontostomatology Unit, Milan, Italy.; Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy., Rigoni M; Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy.; Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy., Veronesi V; Bicocca Bioinformatics Biostatistics and Bioimaging Center - B4, School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy., Maiorana C; Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Implant Center for Edentulism and Jawbone Atrophies, Maxillofacial Surgery and Odontostomatology Unit, Milan, Italy.; Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy.
Jazyk: angličtina
Zdroj: Clinical oral implants research [Clin Oral Implants Res] 2024 May; Vol. 35 (5), pp. 547-559. Date of Electronic Publication: 2024 Feb 19.
DOI: 10.1111/clr.14250
Abstrakt: Objectives: The effect of the implant position within the prosthesis on bone remodeling is scarcely documented so far. Thus, the aim of the present study was to investigate whether central implants may suffer higher peri-implant marginal bone levels (MBL) compared to laterals in case of fixed splinted bridges supported by ≥ three implants.
Materials and Methods: Partially edentulous subjects rehabilitated with at least one fixed bridge supported by ≥ three dental implants were enrolled. MBL was assessed radiographically by means of intraoral radiographs acquired with phosphor plates and imported in a dedicated software. MBL was calculated as the distance between the implant platform level and the most coronal visible bone-to-implant contact. A three-level linear mixed effects model was used for investigating the fixed effect of patient-, prosthesis-, and implant-level variables on the MBL.
Results: Overall, 90 patients rehabilitated with 130 splinted fixed bridges supported by 412 implants were included. The median follow-up was 136 months. The mean peri-implant MBL resulted statistically significantly higher at central implants if compared to lateral implants (p < .01). The estimated MBL averages for central and external implants were 1.68 and 1.18 mm, respectively. The prosthesis-level variables suggested that a cement-retained bridge was prone to a significant 0.82 mm higher MBL than a screw-retained one. Implant surface showed an association with MBL changes, although less pronounced than implant retention.
Conclusions: In case of ≥3 adjacent implants supporting splinted bridges, central implants were more predisposed to MBL compared to laterals. At the prosthesis level, implants supporting cement-retained bridges were statistically more susceptible to MBL compared to screw-retained ones. Surface characteristics can also influence MBL stability at the implant level.
(© 2024 The Authors. Clinical Oral Implants Research published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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