中国实用口腔科杂志2025，Vol.18Issue(6)：703-710,8.DOI:10.19538/j.kq.2025.06.010
基于数字化间接粘接技术的正畸托槽体外粘接精准度研究
Research on the in vitro bonding accuracy of orthodontic brackets based on digital indirect bonding technology
摘要
Abstract
Objective To compare the accuracy of the digital indirect bonding technique(IDB)with that of the tradition-al IDB for in vitro orthodontic bracket bonding.Methods A total of 20 patients scheduled for fixed orthodontic treat-ment at the Department of Orthodontics,Stomatological Hospital of Xi'an Jiaotong University between September and No-vember 2023 were enrolled.Three dentition plaster models were fabricated for each patient.These models were allocated for use in the experimental and clinical stages of the tradi-tional IDB protocol,as well as the clinical stage of the dig-ital IDB protocol.In the experimental phase of the tradi-tional IDB protocol,brackets were manually positioned and bonded on the plaster models.These were then digital-ly scanned to create a working model.Using a double-layer transfer tray,the brackets were subsequently transferred and bonded onto the clinical-stage plaster models.Finally,these models were digitally scanned to form the patient model,which was designated as the traditional group.The clinical-stage plaster models for the digital IDB protocol were scanned to obtain digital models,on which the brackets were virtually positioned(creating a digital working model).Sub-sequently,using digital light processing(DLP)printing and a double-layer transfer tray,the brackets were fabricated and bonded onto the clinical-stage plaster models.These models were then digitally scanned to create the patient model,which was designated as the digital group.The working model served as the control for three-dimensional registration with the respective patient model.Subsequently,compare and analyze linear deviations(gingival-occlusal,mesial-distal,labial/buccal-lingual/palatal)and angular deviations(rotation,torque,angulation)between the two groups,followed by the calculation of the overall bracket pass rate.Results A total of 20 working models were included respectively in the digital group and traditional group.Brackets were bonded to the incisors,canines,premolars,and first molars,resulting in 480 brackets per group.Among them,thirteen brackets that debonded during the transfer process were excluded,yield-ing a final analysis of 473 brackets in the traditional group and 474 in the digital group.The digital group demonstrated significantly smaller deviations in the linear(gingival-occlusal,mesial-distal,labial/buccal-lingual/palatal)and angular(rotation,angulation)measurements,along with a significantly higher overall bracket success rate,compared to the tradi-tional group(all P＜0.05).No statistically significant differences were observed in the bracket torque deviation or its bracket success rate between the two groups(P＞0.05).A statistically significant difference between the two groups was observed only in the mesial-distal direction.The digital group exhibited a predominantly mesial offset,with mesially brackets accounting for 72.8％(x2=18.342,P＜0.001).Except for the gingival-occlusal and torque measurements,com-parisons of other bracket deviation parameters between the two groups showed statistically significant differences across all tooth positions(all P＜0.05).Conclusion Compared to the traditional technique,the digital IDB protocol demon-strates superior accuracy for in vitro orthodontic bracket bonding and achieves a higher clinically acceptable success rate.However,further improvements are warranted in torque control,individualized tooth positioning,and clinical appli-cation.关键词
正畸托槽/数字化间接粘接/三维配准/精准度Key words
orthodontic brackets/digital indirect bonding/three-dimensional registration/accuracy分类
医药卫生引用本文复制引用
Badr Sultan Saif,ZHAN Xiao-rui,TANG Yu,GUO Yu-cheng,GUO Yu-xin..基于数字化间接粘接技术的正畸托槽体外粘接精准度研究[J].中国实用口腔科杂志,2025,18(6):703-710,8.基金项目
陕西省杰出青年科学基金项目(2025JC-JCQN-101) （2025JC-JCQN-101）
西安交通大学研究生教育改革项目(XJG2024008) （XJG2024008）
