前牙开颌与正常垂直覆颌儿童的下颌牙弓尺寸：一项横断面研究
Lower Arch Dimensions in Children with Anterior Open Bite and Normal Vertical Overbite: A Cross-sectional Study.
作者信息
Valderrama Rodríguez Valentina, Sánchez Garzón Juliana, Botero-Mariaca Paola
机构信息
Department of Orthodontics, Universidad Cooperativa de Colombia, Envigado, Colombia.
Department of Epidemiology, Universidad Cooperativa de Colombia, Envigado - Colombia.
出版信息
J Int Soc Prev Community Dent. 2019 Nov 4;9(6):571-575. doi: 10.4103/jispcd.JISPCD_163_19. eCollection 2019 Nov-Dec.
AIM
Dental arch is a dynamic structure and its size depends on genetic and environmental factors. The aim of this study was to determine lower arch dimensions in children between 8 and 16 years with anterior open bite (AOB) and normal vertical overbite (NVO).
MATERIALS AND METHODS
A cross-sectional study was performed in 132 individuals with AOB and 132 with NVO between 8 and 16 years selected from public schools. Intercanine width, arch length, intermolar and interpremolar distances, and arch perimeter of the lower arch were measured in previously digitalized models using the GOM inspection program and an optical three-dimensional scanner.
RESULTS
Individuals with NVO presented smaller lower arch size with statistical differences in intercanine ( = 0.024, 95% confidence interval [CI]: 0.01, 0.02) and intermolar ( = 0.000, 95% CI: -1.76, -0.53) width and nonsignificant differences in the arch perimeter ( = 0.239, 95% CI: -1.57, 0.39) according to Mann-Whitney -test.
CONCLUSION
Individuals between 8 and 16 years of age with NVO showed smaller lower dental arch than individuals with AOB in most dimensions.
目的
牙弓是一个动态结构，其大小取决于遗传和环境因素。本研究的目的是确定8至16岁患有前牙开（AOB）和正常垂直覆（NVO）的儿童的下牙弓尺寸。
材料与方法
对从公立学校挑选出的132名8至16岁患有AOB的个体和132名患有NVO的个体进行了横断面研究。使用GOM检测程序和光学三维扫描仪，在先前数字化的模型中测量下牙弓的尖牙间宽度、牙弓长度、磨牙间和前磨牙间距离以及牙弓周长。
结果
根据Mann-Whitney U检验，患有NVO的个体下牙弓尺寸较小，尖牙间宽度（P = 0.024，95%置信区间[CI]：0.01，0.02）和磨牙间宽度（P = 0.000，95% CI：-1.76，-0.53）存在统计学差异，牙弓周长差异无统计学意义（P = 0.239，95% CI：-1.57，0.39）。
结论
8至16岁患有NVO的个体在大多数维度上的下牙弓比患有AOB的个体小。
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