Sajjan M C Suresh, Eachempati Prashanti, Dhall Rupinder Singh, Fulari Deepthi, Shigli Kamal, Soe Htoo Htoo Kyaw
Department of Prosthodontics, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India.
Department of Prosthodontics, Faculty of Dentistry, Melaka Manipal Medical College, Manipal Academy of Higher Education, Melaka, Malaysia.
J Indian Prosthodont Soc. 2020 Oct-Dec;20(4):402-408. doi: 10.4103/jips.jips_313_20. Epub 2020 Oct 8.
A variety of anthropometric techniques have been proposed to determine the correct vertical dimension of occlusion. However, none have reported correlating thumb length (TL) with vertical dimension at rest (VDR). This study aimed to correlate the VDR to measurements of the thumb in a multi-national, multi-centric trial in participants with and without orthodontic treatment and establish a regression equation for each region.
A cross-sectional multi-national, multi-centric correlation trial.
A cross-sectional study was conducted in India and Malaysia with a total of 688 participants. Measurements of thumb and VDR were obtained using a modified Willi's gauge using a standard operating procedure.
Pearson's correlation coefficient was calculated to determine the correlation between TL and VDR. A multiple linear regression was done to correlate VDR from gender, orthodontic treatment, and length of thumb.
Correlation coefficient between TL and VDR in patients with orthodontic treatment was 0.829 and 0.774 in patients without orthodontic treatment. The correlation between TL and VDR in patients with orthodontic treatment in North India was 0.484, = 0.010 and Malaysia was 0.946, < 0.001. There were significant correlations between TL and VDR in patients without orthodontic treatment in all regions ( < 0.001). Regression equations were obtained for different ethnic groups for calculating the VDR.
There was an overall positive correlation between TL and VDR in patients with and without orthodontic treatment. The regression equations presented in this article could help clinicians in their clinical practice and researchers to conduct future trials.
已提出多种人体测量技术来确定正确的咬合垂直距离。然而，尚无研究报道拇指长度（TL）与静息垂直距离（VDR）之间的相关性。本研究旨在通过一项针对接受和未接受正畸治疗的参与者的多国、多中心试验，将VDR与拇指测量值相关联，并为每个地区建立回归方程。
一项横断面多国、多中心相关性试验。
在印度和马来西亚进行了一项横断面研究，共有688名参与者。使用改良的威利氏量规，按照标准操作程序获取拇指和VDR的测量值。
计算皮尔逊相关系数以确定TL与VDR之间的相关性。进行多元线性回归，以关联性别、正畸治疗和拇指长度与VDR的关系。
接受正畸治疗患者的TL与VDR之间的相关系数为0.829，未接受正畸治疗患者的相关系数为0.774。北印度接受正畸治疗患者的TL与VDR之间的相关性为0.484，P = 0.010，马来西亚为0.946，P < 0.001。所有地区未接受正畸治疗患者的TL与VDR之间均存在显著相关性（P < 0.001）。获得了不同种族群体计算VDR的回归方程。
接受和未接受正畸治疗的患者中，TL与VDR总体呈正相关。本文提出的回归方程可帮助临床医生进行临床实践，并有助于研究人员开展未来的试验。
