"The effects of lingual buttons, precision cuts, and patient-specific attachments during maxillary molar distalization with clear aligners: Comparison of finite element analysis"

作者全名："Jia, Lurong; Wang, Chunjuan; Li, Lingjie; He, Yao; Wang, Chao; Song, Jinlin; Wang, Lizhen; Fan, Yubo"

作者地址："[Jia, Lurong; Wang, Chunjuan; Li, Lingjie; He, Yao; Song, Jinlin] Chongqing Key Lab Oral Dis & Biomed Sci, Chongqing, Peoples R China; [Jia, Lurong; Wang, Chunjuan; Li, Lingjie; He, Yao; Wang, Chao; Song, Jinlin] Chongqing Med Univ, Stomatol Hosp, Chongqing, Peoples R China; [Jia, Lurong; Wang, Chunjuan; Li, Lingjie; He, Yao; Song, Jinlin] Chongqing Municipal Key Lab Oral Biomed Engn Highe, Chongqing, Peoples R China; [Wang, Chao; Wang, Lizhen; Fan, Yubo] Beihang Univ, Beijing Adv Innovat Ctr Biomed Engn, Sch Biol Sci & Med Engn, Sch Engn Med,Minist Educ,Key Lab Biomech & Mechano, Beijing, Peoples R China; [Song, Jinlin] Chongqing Med Univ, Dept Orthodont, Stomatol Hosp, 426 North Songshi Rd, Chongqing 401147, Peoples R China; [Wang, Chao] Beihang Univ, Sch Biol Sci & Med Engn, 37 Xueyuan Rd, Beijing 100191, Peoples R China"

通信作者："Song, JL (通讯作者)，Chongqing Med Univ, Dept Orthodont, Stomatol Hosp, 426 North Songshi Rd, Chongqing 401147, Peoples R China.; Wang, C (通讯作者)，Beihang Univ, Sch Biol Sci & Med Engn, 37 Xueyuan Rd, Beijing 100191, Peoples R China."

来源：AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS

ESI学科分类：CLINICAL MEDICINE

WOS号：WOS:000908698200001

JCR分区：Q1

影响因子：2.7

年份：2023

卷号：163

期号：1

开始页：E1

结束页：E12

文献类型：Article

关键词：　

摘要："Introduction: This study aimed to analyze the biomechanical effects of the combined use of clear aligners (CA) and auxiliaries (precision cuts, lingual buttons, and patient-specific attachments) on mesial tipping and extrusion of the premolars during maxillary molars distalization. Methods: Three-dimensional finite element method was employed to simulate clinical scenarios of CA with different auxiliaries for molar distalization. As such, 200 g of distal force was applied to the microimplants from the notches, lingual buttons, and hooks. Orthodontic tooth movement and the hydrostatic pressure in the periodontal ligament were compared. Results: Adding auxiliaries can provide the maxillary arch anchorage and promote the distal tipping of premolars and retroclination of maxil-lary incisors. In contrast, this effect was more pronounced in patient-specific attachment applications than in other types of auxiliaries. The independent application of the CA caused mesial tipping and extrusion of the premolar and also caused the incisor proclination. Conclusions: The anchorage loss caused by the CA alone could be alleviated with the assistance of auxiliaries. Notably, patient-specific attachments further reinforce the anchorage of the anterior arch by incorporating anchor teeth as 1 anchorage unit. (Am J Orthod Dentofacial Orthop 2023;163:e1-e12)"

基金机构：National Natural Science Foundation of China; Nat-ural Science Foundation of Beijing; Postdoctoral ScienceFoundation of China; Natural Science Foundation of Chongqing; Postdoctoral Program for Innovative Talents of Chongqing; Orthodontic research project of youth clinical research fund of Chinese Stomatological Asso-ciation; Municipal Graduate Tutor Team Con-struction Project; [11872135]; [12072055]; [12172034]; [U20A20390]; [82001081]; [L212063]; [2020M683266]; [csts2020jcyj-bshX0022]; [2010010006080066]; [CSA-O2020-07]

基金资助正文："This work was supported by the National Natural Science Foundation of China (Grant nos. 11872135, 12072055, 12172034, U20A20390, and 82001081) , Nat-ural Science Foundation of Beijing (Grant no. L212063) , Postdoctoral ScienceFoundation of China (Grant no. 2020M683266) , Natural Science Foundation of Chongqing (Grant no. csts2020jcyj-bshX0022) , Postdoctoral Program for Innovative Talents of Chongqing (Grant no. 2010010006080066) , Orthodontic research project of youth clinical research fund of Chinese Stomatological Asso-ciation (Grant no. CSA-O2020-07) , and Municipal Graduate Tutor Team Con-struction Project (Grant no. dstd201903) ."