815颗儿童上颌多生牙的回顾性分析  

A retrospective study on 815 maxillary supernumerary teeth in children

作　　者：陈云 曹灵[1] 王雅欣 于剑南 CHEN Yun;CAO Ling;WANG Yaxin;YU Jiannan(Department of Pediatric and Preventive Dentistry,The Affiliated Stomatological Hospital of Nanjing Medical University,Jiangsu Province Key Laboratory of Oral Diseases,Jiangsu Province Engineering Research Center of Stomatological Translational Medicine,Nanjing 210029,China)

机构地区：[1]南京医科大学附属口腔医院儿童口腔预防科,江苏省口腔疾病研究重点实验室,江苏省口腔转化医学工程研究中心,江苏南京210029 [2]南京医科大学附属口腔医院影像科,江苏南京210029

出　　处：《口腔医学》2023年第8期717-721,共5页Stomatology

基　　金：江苏省科教能力提升工程——江苏省研究型医院(YJXYYJSDW4);江苏省医学创新中心(CXZX202227)。

摘　　要：目的研究儿童上颌前部多生牙的三维特征,分析其对恒牙的影响。方法基于临床及CBCT资料回顾性分析594例儿童815颗上颌前部多生牙病例的年龄、性别、部位、数目、形态、萌出情况及对恒前牙的影响。结果594例患者共815颗多生牙,患者的平均年龄7.98岁,男女比例为3.37∶1;上颌前部多生牙中以1颗多生牙最常见(63.97%);形态以锥形多见;位置分布上,正中多生牙84.54%,冠在腭侧占大部分(78.28%);方向上440颗倒置(53.99%),其次是正向。儿童上颌前部多生牙大部分未萌或阻生,已萌多生牙占20.61%。对恒前牙影响中,多生牙中错[牙合]畸形555例,发生率高达68.10%,囊性变23例,恒牙牙根吸收14例。结论儿童上颌前牙区多生牙易引发错[牙合]畸形,需及时拔除。Objective To study the three⁃dimensional characteristics of anterior maxillary supernumerary teeth in children and their effects on permanent teeth.Methods Based on clinical and CBCT data,retrospective analysis was conducted in aspects of the age,gender,location,number,shape,eruption and effect on permanent anterior teeth of 815 maxillary supernumerary teeth from 594 chil⁃dren.Results There were 815 supernumerary teeth in the anterior maxilla in 594 children,whose average age was 7.98,and the male to female ratio was 3.37∶1.One supernumerary tooth was most common(63.97%).Conical shape was much more than others;84.54%among them were mesiodens,and the crowns located at the palatal side accounted for 78.28%.A total of 440 supernumerary teeth were in inverted direction(53.99%).Most supernumerary teeth were unerupted or impacted,and the eruption rate was 20.61%.There were 555 supernumerary teeth which caused malocclusion(68.10%).Cystic changes and root resorption of permanent teeth were respectively found in 23 cases and 14 cases.Conclusion Maxillary anterior supernumerary teeth in children are prone to malocclusion and need to be removed in time.

关 键 词：多生牙 CBCT 错[牙合]畸形 回顾性分析 

分 类 号：R783.5[医药卫生—口腔医学]