阻断性拔除乳尖牙引导异位下颌恒尖牙向正常方向萌出1例  

One case of blocking extraction of deciduous canine led to eruption of ectopic mandibular permanent canine in normal direction

作　　者：杜样 郭慧慧 汪璐璐 王军辉 陈宇江 王小竞 DU Yang;GUO Huihui;WANG Lulu;WANG Junhui;CHEN Yujiang;WANG Xiaojing(State Key Laboratory of Military Stomatology,National Clinical Research Center for Oral Diseases,Shaanxi Clinical Research Center for Oral Diseases,Department of Pediatric Dentistry,Stomatology Hospital,the Fourth Military Medical University,Shaanxi Province,Xi’an 710032,China;State Key Laboratory of Military Stomatology,National Clinical Research Center for Oral Diseases,Shaanxi Clinical Research Center for Oral Diseases,Shaanxi International Joint Research Center for Oral Diseases,Department of Emergency and Comprehensive Clinical,Stomatology Hospital,the Fourth Military Medical University,Shaanxi Province,Xi’an 710032,China)

机构地区：[1]军事口腔医学国家重点实验室,口腔疾病国家临床医学研究中心,陕西省口腔疾病临床医学研究中心,第四军医大学口腔医院儿童口腔科,陕西西安710032 [2]军事口腔医学国家重点实验室,国家口腔疾病临床医学研究中心,陕西省口腔疾病国际联合研究中心,第四军医大学口腔医院急诊与综合临床科,陕西西安710032

出　　处：《中国医药导报》2022年第11期185-187,192,共4页China Medical Herald

基　　金：国家自然科学基金资助项目(81670988、82100954)。

摘　　要：下颌尖牙异位是一种少见的牙齿萌出异常。下颌尖牙异位无明显临床症状,常因放射检查而意外发现。目前对于尖牙异位诊断手段主要为全口曲面断层片及锥形束计算机断层扫描。异位尖牙早期若未发现且未采取预防及阻断性措施,会导致尖牙阻生。尖牙阻生可导致严重的错合畸形,提高含牙囊肿风险,也可引起邻牙牙根吸收,给患者的咀嚼功能、美观及心理造成不良影响。本文报道了1例在下颌恒尖牙异位早期采取阻断性拔除乳尖牙并对拔除间隙进行管理的患儿,并取得了良好的效果。结合文献回顾发现,早期进行预防或阻断性拔除乳尖牙是最理想的治疗方法。早期干预可改善尖牙异位程度,降低尖牙阻生的发生风险,有助于口颌系统的稳定及邻牙健康。Ectopic mandibular canine is a rare abnormality of tooth eruption.Ectopic mandibular canine has no obvious clinical symptoms,and is often found accidentally by radiological examinations.The current diagnostic methods for ectopic canine is mainly full-mouth tomography and cone beam computerized tomography.If ectopic canine is not detected early,and prevention and blocking measures are not taken,it will lead to impacted canine.Impacted canine can lead to severe malocclusion,increase the risk of dentigerous cyst and can also root resorption of adjacent teeth,resulting in adverse effects on the masticatory function,aesthetics,and psychology of patients.This article reports one case of blocking extraction of deciduous canine in the early stage of ectopic mandibular permanent canine and the removal gap was managed and achieved good results.Combined with the literature review,it was found that early prevention or blocking extraction of deciduous canine is the most ideal treatment method.Early intervention can improve the degree of ectopic canine,reduce the risk of impacted canine,and contribute to the stability of the oral and maxillofacial system and the health of adjacent teeth.

关 键 词：近中异位 尖牙阻生 阻断性拔除 间隙保持 

分 类 号：R781[医药卫生—口腔医学]