J Korean Assoc Oral Maxillofac Surg.  2014 Apr;40(2):68-75. 10.5125/jkaoms.2014.40.2.68.

The seven-year cumulative survival rate of Osstem implants

• Kim YK
• Kim BS
• Yun PY
• Mun SU
• Yi YJ
• Kim SG
• Jeong KI

• KMID: 1960957
• DOI: http://doi.org/10.5125/jkaoms.2014.40.2.68

Abstract

OBJECTIVES
This study was performed to analyze the cumulative survival rate of Osstem implants (Osstem Implant Co., Ltd.) over a seven-year period.
MATERIALS AND METHODS
A total of 105 patients who had 467 Osstem implants that were placed at the Section of Dentistry, Seoul National University Bundang Hospital (Seongnam, Korea) from June 2003 through December 2005 were analyzed. The life table method and a cross-tubulation analysis, log rank test were used to evaluate the survival curve and the influence that the prognostic factors. The prognostic factors, i.e., age and gender of patients, diameter and length, type of implants, bone graft history and loading time were determined with a Cox proportional hazard model based on logistic regression analysis.
RESULTS
The seven-year cumulative survival rate of Osstem implants was 95.37%. The Cox proportional hazard model revealed that the following factors had a significant influence on survival rate; increased diameter, reduced prosthetic loading period and performance of bone grafting.
CONCLUSION
The osstem implants showed satisfactory results over the seven-year study period.

Keyword

Dental implants; Survival rate

MeSH Terms

Bone Transplantation
Dental Implants
Dentistry
Humans
Life Tables
Logistic Models
Proportional Hazards Models
Seoul
Survival Rate*
Transplants
Dental Implants

Figure

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  Fig. 1 Survival function curve.

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  Fig. 2 Hazard function curve.

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  Fig. 3 Comparison of the survival function curves between subgroups. SS II, US II, and GS II are Osstem implants (Osstem Implant Co., Ltd.).

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