南京地区3～16岁儿童恒牙发育趋势初探  

Dental maturation assessment of Nanjing children aged 3-16 years

作　　者：李玲[1] 李虎[2] 孙超[3] 袁佳璐[1] 朱玲[1] 

机构地区：[1]南京医科大学口腔疾病研究江苏省重点实验室,南京医科大学附属口腔医院儿童口腔科·预防科,210029 [2]苏州大学附属儿童医院 [3]南京医科大学附属口腔医院放射科

出　　处：《实用口腔医学杂志》2015年第4期542-546,共5页Journal of Practical Stomatology

基　　金：江苏高校优势学科建设工程资助项目(编号:2014-37)

摘　　要：目的:运用Nolla法探索南京地区儿童恒牙钙化发育的规律和趋势。方法:共纳入符合要求的南京市儿童全口牙位曲面体层X线片549例,采用Nolla法对左下颌7颗恒牙的钙化发育进行计分、统计、分析。结果:得出恒牙发育平均值表,男孩恒牙各牙位发育值及总值均晚于女孩。恒牙发育值与年龄呈显著正相关,建立二者数学模型,并得出拟合曲线方程。结论:所得恒牙发育平均值表、恒牙发育时间表及恒牙发育值-年龄拟合曲线图基本反映了本地儿童恒牙生长发育的状况,可为南京地区儿童个体恒牙发育状况的评估提供参考。Objective： To estimate dental maturation norms of permanent dentition in a group of Nanjing children using Nollag tech- nique. Methods： 549 cases of panoramic radiographs （279 males and 270 females） of Nanjing children at the age range of 3 to 16 years were collected for the study. All permanent mandibular teeth on the left side （ except for the third molars） were scored according to Nollag method, and data were presented in tables and used to plot dental maturation curves for the Nanjing boys and girls. Results： Females were found to be more advanced in the degrees of dental development. Dental maturation is significantly associated with chron- ological age （ for males and females ： r = 0. 959, P 〈 0. 001 and r = 0. 953, P 〈 0. 001, respectively）. The mathematical model of them was established, and then the fitting equation was obtained. Conclusion： The dental maturation curve and chronology of permanent dentition can provide the growth norms of permanent teeth for Nanjing children and facilitate the way for dentists to assess the growing children during diagnosis and treatment planning.

关 键 词：恒牙发育 Nolla法 牙龄 

分 类 号：R788[医药卫生—口腔医学]