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五种种植体印模技术的准确性：夹板材料和方法的影响。

Accuracy of five implant impression technique: effect of splinting materials and methods.

机构信息

Lee Yeon Hab Dental Clinic, Daegu, Korea.

出版信息

J Adv Prosthodont. 2011 Dec;3(4):177-85. doi: 10.4047/jap.2011.3.4.177. Epub 2011 Dec 28.

DOI:10.4047/jap.2011.3.4.177
PMID:22259700
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3259442/
Abstract

PURPOSE

The aim of this study was to evaluate the effect of dimensional stability of splinting material on the accuracy of master casts.

MATERIALS AND METHODS

A stainless steel metal model with 6 implants embedded was used as a master model. Implant level impressions were made after square impression copings were splinted using 5 different techniques as follows. (1) Splinted with autopolymerizing resin and sectioned, reconnected to compensate polymerization shrinkage before the impression procedure. (2) Splinted with autopolymerizing resin just before impression procedure. (3) Primary impression made with impression plaster and secondary impression were made over with polyether impression material. (4) Splinted with impression plaster. (5) Splinted with VPS bite registration material. From master model, 5 impressions and 5 experimental casts, total 25 casts were made for each of 5 splinting methods. The distortion values of each splinting methods were measured using coordinate measuring machine, capable of recordings in the x-, y-, z-axes. A one-way analysis of variance (ANOVA) at a confidence level of 95% was used to evaluate the data and Tukey's studentized range test was used to determine significant differences between the groups.

RESULTS

Group 1 showed best accuracy followed by Group 3 & 4. Group 2 and 5 showed relatively larger distortion value than other groups. No significant difference was found between group 3, 4, 5 in x-axis, group 2, 3, 4 in y-axis and group 1, 3, 4, 5 in z-axis (P<.0001).

CONCLUSION

Both Splinting impression copings with autopolymerizing resin following compensation of polymerization shrinkage and splinting method with impression plaster can enhance the accuracy of master cast and impression plaster can be used simple and effective splinting material for implant impression procedure.

摘要

目的

本研究旨在评估夹板材料的尺寸稳定性对工作模型准确性的影响。

材料和方法

使用带有 6 个种植体的不锈钢金属模型作为母模。使用 5 种不同技术对种植体水平印模进行夹板，然后制取印模。（1）夹板采用自凝树脂，在印模前分段、重新连接以补偿聚合收缩。（2）在印模前直接使用自凝树脂夹板。（3）初次印模使用印模膏，然后使用聚醚印模材料制取二次印模。（4）使用印模膏夹板。（5）使用 VPS 咬合记录材料夹板。从母模制取 5 个印模和 5 个工作模型，共 25 个工作模型，每个夹板技术制取 5 个。使用坐标测量机测量每个夹板技术的变形值，该测量机能够在 x、y、z 轴上进行记录。采用 95%置信水平的单因素方差分析（ANOVA）评估数据，并用 Tukey 学生化范围检验确定组间的显著差异。

结果

第 1 组（补偿聚合收缩后使用自凝树脂夹板）显示出最佳的准确性，其次是第 3 组和第 4 组。第 2 组和第 5 组的变形值明显大于其他组。在 x 轴上，第 3、4、5 组之间，y 轴上第 2、3、4 组之间，z 轴上第 1、3、4、5 组之间的差异无统计学意义（P<.0001）。

结论

补偿聚合收缩后使用自凝树脂夹板和使用印模膏夹板都可以提高工作模型的准确性，印模膏可以作为种植体印模的简单有效的夹板材料。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d2b9/3259442/8dd30f1802d7/jap-3-177-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d2b9/3259442/ea7d8c7d64c3/jap-3-177-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d2b9/3259442/c7f30bb01f6f/jap-3-177-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d2b9/3259442/7211612074eb/jap-3-177-g007.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d2b9/3259442/c7f30bb01f6f/jap-3-177-g006.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d2b9/3259442/2a7654ad1873/jap-3-177-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d2b9/3259442/26cc8b3d8273/jap-3-177-g009.jpg
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