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International Journal of Oral Implantology
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Int J Oral Implantol (Berl) 6 (2013), Nr. 1     7. Feb. 2013
Int J Oral Implantol (Berl) 6 (2013), Nr. 1  (07.02.2013)

Seite 51-59, PubMed:23513202, Sprache: Englisch


The prognosis of partial implant-supported fixed dental prostheses with cantilevers. A 5-year retrospective cohort study
Maló, Paulo / Nobre, Miguel de Araújo / Lopes, Armando
Purpose: To report the outcome of implant-supported fixed partial prostheses with cantilevers at 5 years after loading.
Material and methods: A total of 174 patients, 106 females and 68 males with 225 implants (maxilla: 149; mandible: 76), supporting 191 fixed dental prostheses (maxilla: 125; mandible: 66) were included. Inclusion criteria were patients rehabilitated with partial prostheses with cantilevers and sufficient amount of bone to place implants of at least 7 mm long. Primary outcome measures were prosthesis and implant success as well as biological and mechanical complications. The secondary outcome measure was peri-implant marginal bone loss.
Results: Sixteen patients with 21 implants dropped out (9.2% of patients; 9.4% of implants). Three implants were lost in 3 patients. Two prostheses were lost rendering a survival estimation of 99.0% at 5 years (Kaplan-Meyer). Overall mean (standard deviation) bone level was 0.15 mm (0.34 mm), 1.56 mm (0.88 mm) and 1.88 mm (1.05 mm) at implant insertion, and 1 and 5 years after implant placement, respectively. The frequency at patient level of biological and mechanical complications was 2.9% and 27.6%, respectively.
Conclusions: Within the limitations of this study, it is possible to conclude that it is viable to use fixed implant-supported partial rehabilitations with a cantilever, judging by the 99% prosthetic success rate at 5 years. However, there is a relatively high frequency of complications to cope with in these rehabilitations.

Schlagwörter: cantilever, complications, dental implants, dental prosthesis
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