Effect of platform switching on crestal bone levels around implants in the posterior mandible: 3 years results from a multicentre randomized clinical trial.
In: Journal of Clinical Periodontology, Jg. 43 (2016-04-01), Heft 4, S. 374-382
Online
academicJournal
Zugriff:
Objective Evaluation of differences in the clinical performance and crestal bone levels between implants restored with single crowns with platform-matched or platform-switched abutments after 3 years. Material and Methods The study enrolled adult patients missing two or more adjacent teeth in the posterior mandible with natural teeth mesial to the implant site. Randomization followed open-flap implant insertion and the corresponding matching or switching healing abutments placed at surgery. Conventional loading was made with cemented crowns. Clinical follow-up took place annually after loading up to 3 years. Bone level changes were measured in standardized radiographs as the variation in crestal bone from one evaluation to the next. Results Sixty-three patients with a total of 135 implants (66 platform matching, 69 platform switching) were analysed. From surgery to 36 months, mean bone loss was 0.28 ± 0.56 mm for the platform-switching group and 0.68 ± 0.64 mm for the platform-matching group. A statistically significant difference was found between groups ( p = 0.002) with an estimate of 0.39 mm (0.15-0.64, 95% CI) in favour of platform switching. Conclusions After 3 years, platform-switching restorations showed a significant effect in the preservation of marginal bone levels compared to platform-matching restorations. [ABSTRACT FROM AUTHOR]
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Titel: |
Effect of platform switching on crestal bone levels around implants in the posterior mandible: 3 years results from a multicentre randomized clinical trial.
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Autor/in / Beteiligte Person: | Rocha, Salomão ; Wagner, Wilfried ; Wiltfang, Jörg ; Nicolau, Pedro ; Moergel, Maximilian ; Messias, Ana ; Behrens, Eleonore ; Guerra, Fernando |
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Zeitschrift: | Journal of Clinical Periodontology, Jg. 43 (2016-04-01), Heft 4, S. 374-382 |
Veröffentlichung: | 2016 |
Medientyp: | academicJournal |
ISSN: | 0303-6979 (print) |
DOI: | 10.1111/jcpe.12522 |
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