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一种用于微型种植体正确放置的简易三维支架。

A simple three-dimensional stent for proper placement of mini-implant.

作者信息

Felicita A Sumathi

机构信息

Department of Orthodontics, Saveetha Dental College, Chennai, Tamil Nadu, India.

出版信息

Prog Orthod. 2013 Nov 12;14(1):45. doi: 10.1186/2196-1042-14-45.

DOI:10.1186/2196-1042-14-45
PMID:24326158
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3883515/
Abstract

BACKGROUND

This paper deals with the fabrication of a three-dimensional stent which is simple in design but provides an accurate placement of a mini-implant in three planes of space, namely, sagittal (root proximity), vertical (attached gingiva/alveolar mucosa) and transverse (angulation).

FINDINGS

The stent is made of 0.018×0.025 in. stainless steel archwire which consists of a 'u loop' angulated at 20°, a vertical limb, a horizontal limb and a stop. The angulation of the 'u' helps in the placement of the mini-implant at 70° to the long axis of the tooth. The vertical height is determined such that the mini-implant is placed at the mucogingival junction. The mini-implant is placed with the aid of the stent, and its angulation and proximity to the adjacent roots are checked with a cone beam computed tomography image. The cone beam computed tomography image showed the mini-implant at an angle of 70° to the long axis of the tooth. There is no contact between mini-implant and the roots of the adjacent teeth.

CONCLUSION

This stent is simple, easy to fabricate, cost-effective, and provides ease of insertion/removal, and three-dimensional orientation of the mini-implant.

摘要

背景

本文论述了一种三维支架的制作，该支架设计简单，但能在空间的三个平面（即矢状面（牙根附近）、垂直面（附着龈/牙槽黏膜）和横断面（角度））准确放置微型种植体。

研究结果

该支架由0.018×0.025英寸的不锈钢弓丝制成，包括一个呈20°角的“U形环”、一个垂直臂、一个水平臂和一个阻挡部。“U”形的角度有助于将微型种植体放置在与牙齿长轴成70°的位置。确定垂直高度，以便将微型种植体放置在龈黏膜交界处。借助该支架放置微型种植体，并通过锥形束计算机断层扫描图像检查其角度和与相邻牙根的距离。锥形束计算机断层扫描图像显示微型种植体与牙齿长轴成70°角。微型种植体与相邻牙齿的牙根之间无接触。

结论

该支架简单、易于制作、成本效益高，便于微型种植体的插入/取出以及三维定位。

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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca2b/3883515/e778f3a46c84/2196-1042-14-45-10.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca2b/3883515/ca9d116bfded/2196-1042-14-45-12.jpg
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