Gaur Shashank, Singh Neha, Singh Reshu, Phukan Anuve H, Mittal Manoj, Kohli Anil
Department of Pediatric and Preventive Dentistry, Bhabha College of Dental Sciences, Bhabha University, Bhopal, Madhya Pradesh, India.
Department of Prosthodontics and Crown & Bridge, Government Dental College, Srimanta Sankaradeva University of Health Sciences, Guwahati, Assam, India.
Int J Clin Pediatr Dent. 2022 Sep-Oct;15(5):603-609. doi: 10.5005/jp-journals-10005-2470.
Mixed dentition space analysis helps in determining the discrepancy between the available and required space in each dental arch during the mixed dentition period; further, it helps to diagnose and plan the treatment of developing malocclusion.
The aim of this study is to evaluate the applicability of Tanaka and Johnston's and Moyer's methods of predicting the size of permanent canines and premolars and compare the tooth size between the right and left sides between males and females, and also to compare the predicted values of mesiodistal widths of permanent canines and premolars from Tanaka and Johnston and Moyer's method with the measured values.
The sample consisted of 58 sets of study models, of which 20 were girls and 38 were boys, that were collected from the children of the 12-15 year age-group. A digital vernier gauge, whose beaks were sharpened, was used to measure the mesiodistal widths of the individual teeth in order to increase accuracy.
The two-tailed paired -tests were used to assess the bilateral symmetry of the mesiodistal diameter of all measured individual teeth.
It was concluded that Tanaka and Johnston's method could not accurately predict the mesiodistal widths of unerupted canines and premolars of children of Kanpur city due to the high variability in estimation, whereas the least statistically significant difference was obtained only at 65% level of Moyer's probability chart for male, female, and combined sample.
Gaur S, Singh N, Singh R, Mixed Dentition Analysis in and around Kanpur City: An Existential and Illustrative Study. Int J Clin Pediatr Dent 2022;15(5):603-609.
混合牙列间隙分析有助于确定混合牙列期每个牙弓中可用空间与所需空间之间的差异；此外，它有助于诊断和规划正在发展的错牙合畸形的治疗。
本研究的目的是评估田中与约翰斯顿方法以及莫耶方法预测恒牙尖牙和前磨牙大小的适用性，并比较男性和女性左右两侧的牙大小，同时比较田中与约翰斯顿方法以及莫耶方法预测的恒牙尖牙和前磨牙近远中宽度的预测值与测量值。
样本包括58套研究模型，其中女孩20套，男孩38套，这些模型来自12至15岁年龄组的儿童。为提高准确性，使用了一种喙部经过打磨的数字游标卡尺来测量各个牙齿的近远中宽度。
使用双尾配对检验来评估所有测量的单个牙齿近远中直径的双侧对称性。
得出的结论是，由于估计的高变异性，田中与约翰斯顿的方法无法准确预测坎普尔市儿童未萌出尖牙和前磨牙的近远中宽度，而对于男性、女性和综合样本，仅在莫耶概率图的65%水平上获得了最小的统计学显著差异。
Gaur S, Singh N, Singh R, 坎普尔市及周边地区的混合牙列分析：一项实证与实例研究。《国际临床儿科牙科学杂志》2022年；15(5):603 - 609。
