Journal of Shandong University (Health Sciences) ›› 2019, Vol. 57 ›› Issue (4): 101-105.doi: 10.6040/j.issn.1671-7554.0.2019.092

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Comparison of the efficiency of rectangular attachment and optimized attachment in the distal movement of canine on invisalign aligner

JU Bo1,2,3, LI Deshui1,2, LIU Panpan1,2, GUO Jing1   

  1. 1. Department of Orthodontics, Hospital of Stomatology, Shandong University, Jinan 250012, Shandong, China;
    2. Shandong Provincial Key Laboratory of Oral Biomedicine, Jinan 250012, Shandong, China;
    3. Department of Stomatology, Jinan Peoples Hospital, Jinan 271100, Shandong, China
  • Published:2022-09-27

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Abstract: Objective To compare the efficiency of the rectangular attachment and optimized attachment in the distal movement of canine on invisalign aligner. Methods Altogether 16 individuals who received first premolars extraction surgery and invisalign aligner treatment were enrolled in this study. The rectangular attachment and optimized attachment were placed on the 2 lower canines of each individual randomly using Clincheck. The 3D digital models obtained at the initial and the end of 16th aligners were aligned with Geomagic studio 12. Then the mesiodistal, vertical and labiolingual movement, inclination, angulation and rotation of canines were measured and calculated in the same coordinate system. All measurement indexes were analyzed using SPSS 20.0 software. Results No statistic differences were observed in the mesiodistal, vertical and labiolingual movement (P>0.05). The rectangular attachment was approximately 1.46 times as effective as optimized attachment in the control of angulation. There was no significant difference in torque changes between the two groups. Highly significant difference (P<0.01) was found in terms of rotation. The efficiency of holistic teeth movement in the rectangular attachment group was 69.23% higher than that in the optimized attachment group. Conclusion In teeth extraction, the rectangular attachment is more effective in canine bodily movement than the optimized attachment.

Key words: Invisalign aligner, Rectangular attachment, Optimized attachment, Tooth movement, 3D digitalization 〓山〓东〓大〓学〓学〓报〓(医〓学〓版)57卷4期〓-鞠博,等.隐适美矫治器矩形附件与优化附件远移尖牙效率的对比研究〓\=-

CLC Number: 

  • R783.5
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