Microscopic removal of type Ⅲ dens invaginatus and preparation of apical barrier with mineral trioxide aggregate in a maxillary lateral incisor:A case report and review of literature  

作　　者：Jie Liu Yue-Rong Zhang Fu-Yu Zhang Guang-Dong Zhang Hai Xu 

机构地区：[1]Department of General Dentistry,Affiliated Hospital of Stomatology,Nanjing Medical University,Nanjing 210029,Jiangsu Province,China [2]Jiangsu Key Laboratory of Oral Diseases,Nanjing Medical University,Nanjing 210029,Jiangsu Province,China [3]Department of Conservative Dentistry and Endodontics,Affiliated Hospital of Stomatology,Nanjing Medical University,Nanjing 210029,Jiangsu Province,China

出　　处：《World Journal of Clinical Cases》2020年第6期1150-1157,共8页世界临床病例杂志

基　　金：the Priority Academic Program Development of Jiangsu Higher Education Institutions,No.PAPD2018-87.

摘　　要：BACKGROUND Invaginated teeth pose greater challenges in clinical management because of their complex configuration.With advancements in equipment and materials,such as the dental operation microscope,cone-beam computed tomography and mineral trioxide aggregate,the preservation rate of type Ⅲ dens invaginatus could be greatly increased.CASE SUMMARY This case report presented a 31-year-old woman with complaints of spontaneous swelling and pain in the right maxillary lateral tooth.With the aid of cone-beam computed tomography,type Ⅲ dens invaginatus with apical periodontitis was diagnosed and confirmed.Three-visit endodontic treatment was performed.In the first visit,the invagination was carefully removed under the dental operation microscope,and chemomechanical preparation was done.In the second visit,mineral trioxide aggregate apical barrier surgery was performed in this tooth.In the third visit,the canal was finally obturated with thermoplastic gutta-percha to recover the crown morphology.A 26-mo follow-up revealed a satisfied outcome both in the radiographic and oral examinations.CONCLUSION In this case,removal of the entire abnormal structure provided great convenience for the follow-up treatment.When confronted with the same clinical case in the future,we can take a similar approach to address it.BACKGROUND Invaginated teeth pose greater challenges in clinical management because of their complex configuration.With advancements in equipment and materials,such as the dental operation microscope,cone-beam computed tomography and mineral trioxide aggregate,the preservation rate of type Ⅲ dens invaginatus could be greatly increased.CASE SUMMARY This case report presented a 31-year-old woman with complaints of spontaneous swelling and pain in the right maxillary lateral tooth.With the aid of cone-beam computed tomography,type Ⅲ dens invaginatus with apical periodontitis was diagnosed and confirmed.Three-visit endodontic treatment was performed.In the first visit,the invagination was carefully removed under the dental operation microscope,and chemomechanical preparation was done.In the second visit,mineral trioxide aggregate apical barrier surgery was performed in this tooth.In the third visit,the canal was finally obturated with thermoplastic gutta-percha to recover the crown morphology.A 26-mo follow-up revealed a satisfied outcome both in the radiographic and oral examinations.CONCLUSION In this case,removal of the entire abnormal structure provided great convenience for the follow-up treatment.When confronted with the same clinical case in the future,we can take a similar approach to address it.

关 键 词：TypeⅢdens invaginatus Mineral TRIOXIDE aggregate APICAL barrier Conebeam COMPUTED tomography Dental operation microscope Case report 

分 类 号：R781.05[医药卫生—口腔医学]