Accuracy of palatal orthodontic mini-implants placed by conventionally or CAD/CAM-based surgical guides: a comparative in vitro study.

IF 3 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Angle Orthodontist Pub Date : 2023-01-01 DOI:10.2319/011722-55.1

Maria R Mang de la Rosa, Ayse Safaltin, Paul-Georg Jost-Brinkmann, Annette Aigner, Petra Julia Koch

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引用次数: 1

Abstract

Objectives: To investigate and compare the transfer accuracy of five different surgical guides (SGs) for the insertion of orthodontic mini-implants (OMIs) in the anterior palate.

Materials and methods: Stereolithographic files of 10 maxillary patient models and their corresponding lateral cephalograms were virtually matched and used for planning the position of two parallel OMIs in the paramedian region of the anterior palate. For each patient model, three 3-dimensional (3D)-printed and two conventional SGs were manufactured from different materials, and a total of 96 OMIs were transferred to the anterior palates of the respective 50 molded resin models. The planned (T0) and the actual (T1) OMI positions were analyzed and compared after superimposition of the digitized models. The deviations between the OMI positions in T0 and T1 were described as the distance between the head and the tip, respectively, of each OMI in millimeters and the deviating angle between the OMI axes for each patient and SG.

Results: The conventionally manufactured SGs of Pattern Resin LS (GC Europe N.V., Leuven, Belgium) showed the highest linear and angular transfer accuracy for the insertion of OMIs. The highest deviations were found with the SGs made of IMPRIMO LC Splint (3D-printed; Scheu-Dental, Iserlohn, Germany) and Memosil 2 (conventional SG; Kulzer, Hanau, Germany).

Conclusions: The 3D-printed SGs did not reach the accuracy of the conventional SGs made of Pattern Resin but may provide sufficient accuracy for palatal OMI placement.

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传统或基于CAD/ cam的手术导板放置腭正畸微型种植体的准确性:一项体外比较研究。

目的:探讨和比较5种不同的手术导向器(SGs)在前腭植入正畸微型种植体(OMIs)时的转移准确性。材料与方法:对10例上颌患者模型的立体光刻档案及其相应的侧位头颅片进行虚拟匹配，并用于规划前腭旁正中区两个平行的OMIs的位置。对于每个患者模型，用不同的材料制造3个三维(3D)打印的和2个传统的SGs，并将96个OMIs转移到各自50个模塑树脂模型的前腭。在数字化模型叠加后，对计划(T0)和实际(T1) OMI位置进行了分析和比较。T0和T1时OMI位置的偏差分别为每个OMI的头部和尖端之间的距离，单位分别为毫米，以及每个患者的OMI轴线与SG之间的偏离角度。结果:常规制造的Pattern Resin LS (GC Europe n.v.， Leuven, Belgium)的SGs在插入OMIs时具有最高的线性和角度传递精度。IMPRIMO LC Splint (3d打印)制作的SGs偏差最高;Scheu-Dental, Iserlohn, Germany)和Memosil 2(常规SG;Kulzer, Hanau, Germany)。结论:3d打印的残体修复体的精度不及传统的Pattern Resin残体修复体，但可以提供足够的精度用于腭部OMI的放置。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Angle Orthodontist 医学-牙科与口腔外科

CiteScore

6.40

自引率

5.90%

发文量

审稿时长

3 months

期刊介绍： The Angle Orthodontist is the official publication of the Edward H. Angle Society of Orthodontists and is published bimonthly in January, March, May, July, September and November by The EH Angle Education and Research Foundation Inc. The Angle Orthodontist is the only major journal in orthodontics with a non-commercial, non-profit publisher -- The E. H. Angle Education and Research Foundation. We value our freedom to operate exclusively in the best interests of our readers and authors. Our website www.angle.org is completely free and open to all visitors.