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http://dx.doi.org/10.4047/jkap.2013.51.3.183

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

Huh, Yoon-Hyuk (Department of Prosthodontics, Sanbon Dental Hospital, Wonkwang University)
Yi, Yang-Jin (Department of Prosthodontics, Seoul National University Bundang Hospital)
Kwon, Min-Jung (Department of Prosthodontics, Seoul National University Bundang Hospital)
Kim, Young-Kyun (Department of Oral and maxillofacial suregery, Seoul National University Bundang Hospital)
Cha, Min-Sang (Division of Prosthodontics, Department of Dentistry, Gangneung Asan Hospital, University of Ulsan College of Medicine)
Publication Information
The Journal of Korean Academy of Prosthodontics / v.51, no.3, 2013 , pp. 183-189 More about this Journal
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 $0.53{\pm}0.39mm$. 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.
Keywords
Angulation; Cantilever; Complication; Fixed-hybrid prosthesis; Fully edentulous; Marginal bone loss;
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