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International Journal of Oral Implantology



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Int J Oral Implantol (Berl) 10 (2017), Nr. 1     21. Mär. 2017
Int J Oral Implantol (Berl) 10 (2017), Nr. 1  (21.03.2017)

Seite 85-93, PubMed:28327697, Sprache: Englisch

Seven mm long dental implants in posterior jaws: 3-year report of an ongoing prospective single cohort study
Maló, Paulo / Nobre, Miguel de Araújo / Lopes, Armando / Gonçalves, Inês / Nunes, Mariana
Purpose: To report on the outcome of 7 mm long implants in the rehabilitation of posterior areas of atrophic jaws 3 years after loading.
Materials and methods: This prospective study included 127 patients treated with 217 implants supporting 165 fixed prostheses. Final abutments were delivered at surgery stage and in the large majority of patients (n = 116) the implants (n = 199) were loaded after 4 months. Primary outcome measures were implant success and prosthetic success calculated at patient level; secondary outcome measures were complications, and marginal bone level changes calculated at patient level.
Results: Thirteen patients with 21 implants dropped out of the study after 3 years. Implant losses occurred in 10 of the 127 patients and 14 of the 217 implants placed failed, giving a cumulative success rate of 93.7% at 3 years, using the patient as unit of analysis. Eight prosthetic failures occurred in six patients, rendering a prosthetic success rate 95.3% at patient level. The average (standard deviation) marginal bone resorption after 3 years of follow-up was 1.46 mm (0.78 mm). Complications occurred in 13 patients (10.2%) and 15 implants (6.9%).
Conclusions: Within the limitations of this study, 7 mm long implants in posterior atrophic jaws can be a viable treatment option given the good prosthetic and implant success rates, low marginal bone loss and low incidence of complications. Nevertheless, longer follow-ups are needed to validate the long-term outcome.

Conflict-of-interest statement: This study was funded by grant no. 2015-1378 from Nobel Biocare Services. Paulo Maló is currently a consultant for Nobel Biocare. The remaining authors declare no conflicts of interest.

Schlagwörter: dental prosthesis, implant-supported, humans, follow-up study
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