Department of Pedodontics, Orthodontics and Preventive Dentistry, College of Dentistry, University of Sulaimani, P.O. Box 334, Sulaymaniyah 46001, Iraq.
Comput Math Methods Med. 2020 Dec 21;2020:8869996. doi: 10.1155/2020/8869996. eCollection 2020.
The current study aimed to find a prediction equation to estimate the arch perimeter (AP) depending on various arch dimensions including intercanine width (ICW), intermolar width (IMW), interpremolar width (IPMW), and arch length (AL) in a sample of the Kurdish population in Sulaimani City. The study sample was 100 pairs of preorthodontic dental casts. Calculations of dental arch dimensions and perimeter were performed by a digital vernier. Statistical analysis was performed via using the SPSS version 25 software. The developed prediction equation for the upper arch was Y = +1.3 × (arch length) + 1 × (intermolar width), whereas the equation for the lower arch was Y = +0.9 × (intermolar width) + 0.92 × (intercanine width). Paired -test revealed no statistical difference between predicted and real arch perimeters. Two separate prediction equations for upper and lower arches were developed based on the arch length (AL) and intermolar width (IMW) for the maxillary arch, intermolar (IMW), and inter canine widths (ICW) for the lower arch. The developed equations could have further beneficial impacts on orthodontic diagnosis and treatment planning.
本研究旨在为苏莱曼尼市库尔德人群样本找到一个预测方程，以根据包括犬齿宽度（ICW）、磨牙宽度（IMW）、前磨牙宽度（IPMW）和牙弓长度（AL）在内的各种牙弓尺寸来估算牙弓周长（AP）。研究样本为 100 对正畸前牙模型。通过数字游标卡尺计算牙弓尺寸和周长。通过使用 SPSS 版本 25 软件进行统计分析。上颌牙弓的预测方程为 Y = +1.3 ×（牙弓长度）+ 1 ×（磨牙宽度），而下颌牙弓的方程为 Y = +0.9 ×（磨牙宽度）+ 0.92 ×（犬齿宽度）。配对检验显示预测和实际牙弓周长之间没有统计学差异。根据上颌的牙弓长度（AL）和磨牙宽度（IMW），以及下颌的磨牙宽度（IMW）和犬齿宽度（ICW），为上下牙弓分别开发了两个单独的预测方程。开发的方程可能对正畸诊断和治疗计划有进一步的有益影响。
