Martin-Romanillos Eugenia, Feijóo Gonzalo, Martín-Vacas Andrea, Mourelle-Martínez María Rosa, Gallardo-López Nuria E, Caleya Antonia M
PhD Program in Dentistry Science, Faculty of Dentistry, Complutense University of Madrid, 28040 Madrid, Spain.
Facultad de Odontología, Universidad Alfonso X El Sabio, Villanueva de la Cañada, 28691 Madrid, Spain.
Children (Basel). 2025 Mar 29;12(4):437. doi: 10.3390/children12040437.
The aim was to establish whether there is a relationship between the presence of unilateral posterior crossbite (u-PCB) and the mesio-distal inclination of permanent upper canines, the angulation of the occlusal plane, or the labial commissure inclination in children.
A cross-sectional association study was conducted. Panoramic radiography was used to measure the inclination of the canines and the occlusal plane, and frontal rest photography was used to measure the inclination of the labial commissure. The measurements were performed with tpsDig264 software version 2.25, 2016, Ecology & Evolution, SUNY), and the data obtained were analyzed with SPSS 22.0 software, using ANOVA and Kruskal-Wallis tests for the statistical analysis.
A total of 106 patients with u-PCB and 41 patients in the control group were studied. No statistically significant differences were observed in the inclination of the right and left canines in patients with u-PCB compared to patients in the control group. There is a relationship between the presence of u-PCB and the inclination of the occlusal plane. No statistically significant differences were observed in the inclination of the labial commissure in patients with u-PCB compared to patients in the control group.
There is no relationship between the presence of u-PCB and the alteration in the eruptive trajectory of the permanent upper canines or in the inclination of the labial commissure. However, a relationship between the presence of u-PCB and altered occlusal plane inclination was found.
旨在确定儿童单侧后牙反合（u-PCB）的存在与恒牙上颌尖牙的近远中倾斜度、咬合平面的角度或口角倾斜度之间是否存在关联。
进行了一项横断面关联研究。使用全景X线摄影测量尖牙和咬合平面的倾斜度，使用正面静息照片测量口角的倾斜度。测量使用tpsDig264软件版本2.25（2016年，纽约州立大学生态与进化系）进行，所获得的数据使用SPSS 22.0软件进行分析，采用方差分析和Kruskal-Wallis检验进行统计分析。
共研究了106例u-PCB患者和41例对照组患者。与对照组患者相比，u-PCB患者左右尖牙的倾斜度未观察到统计学上的显著差异。u-PCB的存在与咬合平面的倾斜度之间存在关联。与对照组患者相比，u-PCB患者口角的倾斜度未观察到统计学上的显著差异。
u-PCB的存在与恒牙上颌尖牙萌出轨迹的改变或口角倾斜度之间不存在关联。然而，发现u-PCB的存在与咬合平面倾斜度改变之间存在关联。
