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评估球附体系统基台的容积性磨耗对种植覆盖义齿固位丧失的影响:一项体外研究。

Evaluation of volumetric wear of abutments on the retention loss of ball attachment systems in implant-retained overdentures: An in vitro study.

机构信息

Private Practice, Istanbul, Turkey.

Program of Dental Technicians, Istanbul University, Istanbul, Turkey.

出版信息

Clin Implant Dent Relat Res. 2018 Oct;20(5):778-784. doi: 10.1111/cid.12644. Epub 2018 Jul 20.

DOI:10.1111/cid.12644
PMID:30028561
Abstract

BACKGROUND

There is a lack of studies evaluating the wear of the male components of the ball attachment systems of implant-retained overdentures.

PURPOSE

The purpose of this study was to compare the volumetric wear patterns four commercially used ball abutments.

MATERIALS AND METHODS

Forty-eight identical polyethylene and acrylic blocks were fabricated and four groups consisting of 12 polyethylene blocks with two implants and 12 acrylic blocks, which were used as overdentures, were generated (two groups with plastic females, one group with gold and one group with titanium females). Every specimen underwent 5000 insertion and removal cycles (~4.5 years) and retention forces were measured. For the evaluation of volumetric wear, all the ball abutments were scanned before and after the 5000 cycles using a three-dimensional scanner and the data were analyzed using the software supplied by the manufacturer.

RESULTS

Statistically significant retention force differences were observed between the groups at each cycle (P < .05). Among the four groups, retention force was lowest in the group with titanium females (5.59 ± 2.27) and highest in the group with gold females (43.0 ± 6.3) at the end of 5000 cycles. Statistically significant dimensional changes in the male components were observed between the groups (P < .05). Volumetric losses were 11%-13% in Group I and II, 1% in Group III, and 25% in Group IV. Group III showed significantly lower volumetric wear whereas Group IV showed significantly higher volumetric wear than all the other groups (P < .001). No significance was detected between Group I and II (P > .05).

CONCLUSION

Within the limitations, it can be concluded that although clinical studies are needed to ensure the findings of the present study, due to severe retention loss and volumetric abutment wear, ball attachments with titanium female components should be used with caution.

摘要

背景

目前缺乏评估种植体支持覆盖义齿的球附体男性部件磨损的研究。

目的

本研究的目的是比较四种商业用球基台的体积磨损模式。

材料和方法

制作了 48 个相同的聚乙烯和丙烯酸块,并生成了四组,每组 12 个聚乙烯块和两个植入物,12 个丙烯酸块,用作覆盖义齿(两组为塑料女性,一组为金女性,一组为钛女性)。每个标本都经历了 5000 次插入和取出循环(约 4.5 年)并测量保持力。为了评估体积磨损,在 5000 次循环前后使用三维扫描仪扫描所有球基台,并使用制造商提供的软件分析数据。

结果

在每个循环中,组间保持力存在统计学显著差异(P <.05)。在四组中,钛女性组的保持力最低(5.59 ± 2.27),金女性组的保持力最高(43.0 ± 6.3),在 5000 次循环结束时。组间观察到男性部件的尺寸发生了统计学显著的变化(P <.05)。体积损失在第一组和第二组为 11%-13%,第三组为 1%,第四组为 25%。第三组的体积磨损明显低于其他组,第四组的体积磨损明显高于其他组(P <.001)。第一组和第二组之间无显著性差异(P >.05)。

结论

在限制条件下,可以得出结论,尽管需要临床研究来确保本研究的结果,但由于严重的保持力丧失和体积基台磨损,应谨慎使用带有钛女性部件的球附件。

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