Modified orthodontic treatment of substitution of canines by first premolars:A case report  

作　　者：Fang-Fei Li Min Li Meng Li Xi Yang 

机构地区：[1]Department of Stomatological,Stomatological Hospital of Chongqing Medical University,Chongqing 401147,China [2]Department of Stomatological,Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences,Chongqing 401147,China [3]Department of Stomatological,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education,Chongqing 401147,China [4]Department of Stomatology,Daping Hospital,Third Military Medical University(Army Military Medical University),Chongqing 400042,China

出　　处：《World Journal of Clinical Cases》2022年第25期9078-9086,共9页世界临床病例杂志

摘　　要：BACKGROUND Canines are the most important teeth in the dentition.Usually,doctors choose to remove premolars rather than canines.Canine extraction is extremely rare in orthodontic treatment.However,dentists sometimes encounter situations in which canines require extraction due to defects caused by improper medical treatment.CASE SUMMARY The present study reports a case of a class II adult patient treated with the extraction of maxillary canines and right mandibular second premolar.After postactive treatment for 28 mo,then the canines were substituted by the upper first premolar,a satisfactory occlusal was established,the lips were competent,and the profile was improved.Intraoral pictures and X-ray data retrieved 3 years after the end of orthodontic treatment demonstrated the possibility of canine extraction and premolar substitution of canines in function and beauty.CONCLUSION The extraction of canines and substitution by first premolars could be a feasible orthodontic treatment.

关 键 词：Orthodontic treatment Canine extraction Tooth substitution Root resorption Case report 

分 类 号：R783.5[医药卫生—口腔医学]