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KMID : 0362720160540121024
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Journal of the Korean Dental Association
2016 Volume.54 No. 12 p.1024 ~ p.1034
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Comparative study of prosthetic complications associated with the bar-clip, milled bar, and Locator attachments for implant overdentures: a retrospective study
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Yoon Kye-Won
Hwang Hee-Sung
Kim Chul-Hoon
Kim Bok-Joo
Kim Jung-Han
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Abstract
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Purpose. The purpose of this study was to compare the type and frequency of prosthetic complications associated with
attachment types for implant overdenture.
Material and methods. In this retrospective study, 38 patients (mean age, 63.5 years) have been treated with implant
overdentures from 2007 to 2014. Ten patients received a bar-clip attachment. Eleven patients had received a milled bar with
Locator attachment. Seventeen patients had received a Locator attachment. The mean follow-up period was 36.9 months (range, 15-83 months). The type and frequency of prosthetic complications was recorded. The frequency was analyzed to determine the statistical difference among the 3 different attachments by using one-way ANOVA ( = .05) and Bonferroni post hoc method at a 5% level of significance.
Results. The total number of prosthetic complications was higher in the bar-clip attachment (55 events) than in the milled bar with Locator attachment (39 events) and the Locator attachment (34 events). There were no statistically significant differences, and the most common prosthetic complication was the loss of retention. In the bar-clip attachment group, the average frequency of prosthetic complications was 3.0 events per prosthesis during the first year. In the milled bar with Locator attachment and Locator attachment groups, the average frequencies were 1.45 events and 2.35 events, respectively. Statistically significant differences were observed in the frequency of the complication. (p = .043)
Conclusions. Compared to the bar-clip attachment, implant overdentures that use milled bars with the Locator attachment have a significantly lower incidence of prosthetic complications in the first year of follow-up after placement.
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KEYWORD
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implant overdenture, bar-clip, milled bar, Locator, complication
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