J Adv Prosthodont.  2011 Dec;3(4):204-215. 10.4047/jap.2011.3.4.204.

A retrospective study on related factors affecting the survival rate of dental implants

• Jang HW
• Kang JK
• Lee K
• Lee YS
• Park PK

• KMID: 2054755
• DOI: http://doi.org/10.4047/jap.2011.3.4.204

Abstract

PURPOSE
The aim of this retrospective study is to analyze the relationship between local factors and survival rate of dental implant which had been installed and restored in Seoul Veterans Hospital dental center for past 10 years. And when the relationship is found out, it could be helpful to predict the prognosis of dental implants.
MATERIALS AND METHODS
A retrospective study of patients receiving root-shaped screw-type dental implants placed from January 2000 to December 2009 was conducted. 6385 implants were placed in 3755 patients. The following data were collected from the dental records and radiographs: patient's age, gender, implant type and surface, length, diameter, location of implant placement, bone quality, prosthesis type. The correlations between these data and survival rate were analyzed. Statistical analysis was performed with the use of Kaplan-Meier analysis, Chi-square test and odds ratio.
RESULTS
In all, 6385 implants were placed in 3755 patients (3120 male, 635 female; mean age 65 +/- 10.58 years). 108 implants failed and the cumulative survival rate was 96.33%. There were significant differences in age, implant type and surface, length, location and prosthesis type (P<.05). No significant differences were found in relation to the following factors: gender, diameter and bone quality (P>.05).
CONCLUSION
Related factors such as age, implant type, length, location and prosthesis type had a significant effect on the implant survival.

Keyword

Dental implants; Implant survival; Implant type and surface; Length; Location; Prosthesis type

MeSH Terms

Dental Implants
Dental Records
Hospitals, Veterans
Humans
Kaplan-Meier Estimate
Male
Prognosis
Prostheses and Implants
Retrospective Studies
Survival Rate
Dental Implants

Figure

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  Fig. 1 A: The survival curve according to gender, B: The survival curve according to age.

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  Fig. 2 The survival curve according to implant type and surface.

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  Fig. 3 The survival curve according to implant diameter.

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  Fig. 4 The survival curve according to implant length.

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  Fig. 5 The survival curve according to location.

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  Fig. 6 The survival curve according to prosthesis type.

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  Fig. 7 The survival curve according to bone quality.

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