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Locator®和ADD-TOC附着体与CAD-CAM铣削杆结合的固位力和磨损模式比较

Comparison of retentive force and wear pattern of Locator® and ADD-TOC attachments combined with CAD-CAM milled bar.

作者信息

Chae Sung-Ki, Cho Won-Tak, Choi Jae-Won, Bae Eun-Bin, Bae Ji-Hyeon, Bae Gang-Ho, Huh Jung-Bo

机构信息

Department of Prosthodontics, Dental Research Institute, Dental and Life Sciences Institute, Education and Research Team for Life Science on Dentistry, School of Dentistry, Pusan National University, Yangsan, Republic of Korea.

Research and Development Institute, Samwon D.M.P, Yangsan, Republic of Korea.

出版信息

J Adv Prosthodont. 2022 Feb;14(1):12-21. doi: 10.4047/jap.2022.14.1.12. Epub 2022 Feb 25.

DOI:10.4047/jap.2022.14.1.12
PMID:35284053
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8891684/
Abstract

PURPOSE

The purpose of this study was to investigate changes in retention and wear pattern of Locator® and ADD-TOC attachments on a digital milled bar by performing chewing simulation and repeated insertion/removal of prostheses in fully edentulous models.

MATERIALS AND METHODS

Locator (Locator®; Zest Anchors Inc., Escondido, CA, USA) was selected as the control group and ADD-TOC (ADD-TOC; PNUAdd Co., Ltd., Busan, Republic of Korea) as the experimental group. A CAD-CAM milled bar was mounted on a master model and 3 threaded holes for connecting a bar attachment was formed using a tap. Locator and ADD-TOC attachments were then attached to the milled bar. Simulated mastication and repeated insertion/removal were performed over 400,000 cyclic loadings and 1,080 insertions/removals, respectively. Wear patterns on deformed attachment were investigated by field emission scanning electron microscopy.

RESULTS

For the ADD-TOC attachments, chewing simulation and repeated insertion/removal resulted in a mean initial retentive force of 24.43 ± 4.89 N, which were significantly lower than that of the Locator attachment, 34.33 ± 8.25 N ( < .05). Amounts of retention loss relative to baseline for the Locator and ADD-TOC attachments were 21.74 ± 7.07 and 8.98 ± 5.76 N ( < .05).

CONCLUSION

CAD-CAM milled bar with the ADD-TOC attachment had a lower initial retentive force than the Locator attachment. However, the ADD-TOC attachment might be suitable for long-term use as it showed less deformation and had a higher retentive force after simulated mastication and insertion/removal repetitions.

摘要

目的

本研究的目的是通过在全口无牙颌模型中进行咀嚼模拟以及假体的反复插入/取出，来研究Locator®和ADD - TOC附着体在数字化铣削杆上的固位力和磨损模式的变化。

材料与方法

选择Locator（Locator®；美国加利福尼亚州埃斯孔迪多市的Zest Anchors公司）作为对照组，ADD - TOC（ADD - TOC；韩国釜山的PNUAdd有限公司）作为实验组。将一个CAD - CAM铣削杆安装在主模型上，并使用丝锥形成3个用于连接杆附着体的螺纹孔。然后将Locator和ADD - TOC附着体连接到铣削杆上。分别在超过400,000次循环加载和1,080次插入/取出操作下进行模拟咀嚼和反复插入/取出。通过场发射扫描电子显微镜研究变形附着体上的磨损模式。

结果

对于ADD - TOC附着体，咀嚼模拟和反复插入/取出导致平均初始固位力为24.43±4.89 N，显著低于Locator附着体的34.33±8.25 N（P <.05）。Locator和ADD - TOC附着体相对于基线的固位力损失量分别为21.74±7.07和8.98±5.76 N（P <.05）。

结论

带有ADD - TOC附着体的CAD - CAM铣削杆的初始固位力低于Locator附着体。然而，ADD - TOC附着体可能适合长期使用，因为在模拟咀嚼和插入/取出重复操作后，它显示出较小的变形且具有较高的固位力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ce/8891684/650484448e8d/jap-14-12-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ce/8891684/2351b6986392/jap-14-12-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ce/8891684/7a09e10c3f24/jap-14-12-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ce/8891684/d68bdf3d97c7/jap-14-12-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ce/8891684/c2802be450da/jap-14-12-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ce/8891684/fbdc098931f4/jap-14-12-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ce/8891684/6fe7c49c6a99/jap-14-12-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ce/8891684/650484448e8d/jap-14-12-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ce/8891684/2351b6986392/jap-14-12-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ce/8891684/7a09e10c3f24/jap-14-12-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ce/8891684/d68bdf3d97c7/jap-14-12-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ce/8891684/c2802be450da/jap-14-12-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ce/8891684/fbdc098931f4/jap-14-12-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ce/8891684/6fe7c49c6a99/jap-14-12-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ce/8891684/650484448e8d/jap-14-12-g007.jpg

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