基于三维数字化模型评估Pont指数在闽南地区的适用性研究

doi:10.13701/j.cnki.kqyxyj.2026.07.009

口腔医学研究 ›› 2026, Vol. 42 ›› Issue (7): 602-606.DOI: 10.13701/j.cnki.kqyxyj.2026.07.009

基于三维数字化模型评估Pont指数在闽南地区的适用性研究

陈玉萍^1,2, 何洁^1,2, 陈晓波^2,3*

1.厦门医学院附属口腔医院正畸二科福建厦门 361000;
2.厦门市口腔疾病诊疗重点实验室福建厦门 361000;
3.厦门医学院附属口腔医院正畸一科福建厦门 361000

收稿日期:2025-10-23 发布日期:2026-07-22
通讯作者: *陈晓波,E-mail:00179@xmmc.edu.cn
作者简介:陈玉萍(1986~ ),女,北京人,硕士,副主任医师,研究方向:口腔正畸学。
基金资助:
福建省科技创新联合资金项目(编号:2024Y9680)

Applicability Evaluation of Pont Index Based on Three-dimensional Digital Models in Southern Fujian

CHEN Yuping^1,2, HE Jie^1,2, CHEN Xiaobo^2,3*

1. Department of Orthodontics Ⅱ, Stomatological Hospital of Xiamen Medical College, Xiamen 361000, China;
2. Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361000, China;
3. Department of Orthodontics Ⅰ, Stomatological Hospital of Xiamen Medical College, Xiamen 361000, China

Received:2025-10-23 Published:2026-07-22

摘要/Abstract

摘要： 目的: 验证Pont指数在闽南地区的适用性,并建立适用于闽南地区的牙弓宽度预测方程。方法: 选取闽南地区462例成年患者,男198例,女264例,收集研究对象数字化口腔扫描资料,利用FusionAnalyser软件进行测量,分别获得上颌切牙宽度和(sum of maxillary incisors widths,SI)、上颌尖牙间牙弓宽度(inter-canine width,ICW)、前磨牙间牙弓宽度(inter-premolar width,IPW)及磨牙间牙弓宽度(inter-molar width,IMW),并根据Pont指数预测出上颌前磨牙间宽度及磨牙间宽度。采用SPSS 29.0软件对数据进行统计学分析,t检验验证Pont指数所预测牙弓宽度与实际测量牙弓宽度是否一致,并对比性别因素对牙冠宽度及牙弓宽度的影响;相关分析验证SI与牙弓宽度间是否存在相关性,通过线性回归建立牙弓宽度的预测方程。结果: Pont指数预测牙弓宽度大于实测牙弓宽,IPW差值3.28 mm、IMW差值3.46 mm,差异有统计学意义(P＜0.001);SI与ICW、IPW、IMW均呈显著正相关,相关系数分别为0.616、0.483、0.350;男性SI及各项牙弓宽度均显著大于女性(P＜0.001),SI差值1.22 mm,牙弓宽度差值1.31~2.14 mm;将总样本随机2∶1分组,利用训练集分别建立男、女性别牙弓宽度预测方程;经验证集检验后,新建方程所预测牙弓宽度与实测牙弓宽度相比无统计学差异(P＞0.05)。结论: Pont指数在闽南地区的应用存在局限性,根据闽南人群样本新建立方程可较准确预测上颌牙弓宽度。

关键词: Pont指数, 牙弓宽度, 牙冠宽度, 闽南地区

Abstract: Objective: To evaluate the applicability of Pont's index in Southern Fujian and to establish population-specific equations for predicting maxillary dental arch widths. Methods: A total of 462 adults (198 males, 264 females) from Southern Fujian were enrolled. Digital intraoral scans were obtained and analyzed using FusionAnalyser software to measure the sum of maxillary incisor widths (SI), inter-canine width (ICW), inter-premolar width (IPW), and inter-molar width (IMW). Pont's index was used to predict IPW and IMW. Data were analyzed with SPSS 29.0. Paired t-tests were used to compare the predicted and actual arch widths, and gender differences in tooth and arch widths were assessed. Correlation and linear regression analyses assessed the SI-arch widths relationship and established corresponding prediction equations. Results: Pont's index significantly overestimated arch widths, with mean differences of 3.28 mm for IPW and 3.46 mm for IMW (P<0.001). SI was positively correlated with ICW, IPW, and IMW (r=0.616,0.483,0.350, respectively). Males had larger SI and arch widths than females (P<0.001). Gender-specific prediction equations, developed from a training set with a random 2∶1 split, were validated. The validation showed no significant difference between the predicted and measured arch widths (P>0.05). Conclusion: Pont's index has limited applicability in the Southern Fujian population. The newly developed regression equations are more accurate and reliable for predicting maxillary arch widths in this regional group.

Key words: Pont's index, dental arch width, mesiodistal crown width, Southern Fujian

陈玉萍, 何洁, 陈晓波. 基于三维数字化模型评估Pont指数在闽南地区的适用性研究[J]. 口腔医学研究, 2026, 42(7): 602-606.

CHEN Yuping, HE Jie, CHEN Xiaobo. Applicability Evaluation of Pont Index Based on Three-dimensional Digital Models in Southern Fujian[J]. Journal of Oral Science Research, 2026, 42(7): 602-606.

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基于三维数字化模型评估Pont指数在闽南地区的适用性研究

Applicability Evaluation of Pont Index Based on Three-dimensional Digital Models in Southern Fujian

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