J Korean Acad Prosthodont.  2013 Jul;51(3):183-189. 10.4047/jkap.2013.51.3.183.

Clinical outcomes of implant supported fixed-hybrid prostheses in the fully edentulous arches

• Huh YH
• Yi YJ
• Kwon MJ
• Kim YK
• Cha MS

• KMID: 2000167
• DOI: http://doi.org/10.4047/jkap.2013.51.3.183

Abstract

PURPOSE
The aim of this study was to evaluate clinical outcomes of implant supported fixed-hybrid prostheses (FHP) in the fully edentulous arches.
MATERIALS AND METHODS
Patients in this retrospective study were restored with fixed-hybrid prostheses supported by 4 to 6 implants and functioned more than 1 year of loading. Outcome measures were marginal bone change of implant related with sex, anatomical location (maxilla vs. mandible), opposing teeth, loading time of patients, tilting of posterior implant by Mann-Whitney U test and cantilever length of superstructure by regression analysis, and complication rates. Significance level was set P<.05.
RESULTS
A total number of 84 implants (16 restorations) placed in 16 patients were observed for 28 months and mean marginal bone loss was 0.53 +/- 0.39 mm. There were no differences of marginal bone loss according to sex, anatomical location (maxilla vs. mandible), opposing teeth, loading time of patients (P>.05), and cantilever length was not significantly related with a marginal bone loss of implant next to cantilever (P>.05). Complication was shown in 11 patients and veneer fracture and dislodging of artificial teeth were most prevalent.
CONCLUSION
Within the limitations of this study, although marginal bone loss of FHP was very little, complication rates were high. Irrespective of tilting of most posterior implants, marginal bone loss of most posterior implants next to cantilever was less than those of the other implants positioned anteriorly. Cantilever length (<17 mm) did not affect a marginal bone loss of most posterior implants.

Keyword

Angulation; Cantilever; Complication; Fixed-hybrid prosthesis; Fully edentulous; Marginal bone loss

MeSH Terms

Humans
Outcome Assessment (Health Care)
Prostheses and Implants
Retrospective Studies
Tooth
Tooth, Artificial

Figure

• 

  Fig. 1. Correlation between the marginal bone loss and cantilever length (R2=0.018).

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