Ardani I Gusti Aju Wahju, Wicaksono Ageng, Hamid Thalca
Orthodontics Department, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, East Java, Indonesia.
Clin Cosmet Investig Dent. 2020 Apr 24;12:163-171. doi: 10.2147/CCIDE.S248983. eCollection 2020.
The occlusal plane is very important in the stomatognathic and aesthetic dentofacial system. Manipulation of the occlusal plane plays an important role in class III malocclusion correction. For this reason, the strategy in establishing the diagnosis, prognosis and treatment plan becomes more complex, so a more comprehensive analysis of the occlusal plane inclination as a parameter of diagnosis is needed for more effective and efficient treatments.
The aim of this study was to determine the comparison of occlusal plane inclination between class III and class I malocclusions and to knowing the correlation of occlusal plane inclination in class III malocclusions with the direction of facial growth.
Samples were secondary lateral cephalograms collected at the Universitas Airlangga (UNAIR) Dental Hospital in October 2017-2018. Cephalograms were traced using the Orthovision software; then, the Mann-Whitney comparative statistical test (p<0.05) was carried out followed by the canonical correlation test.
Differences in class III and class I malocclusions were found in the OP-AB and OP-FH angles. The OP-AB angle is the occlusal plane inclination which has the strongest correlation compared to others. OP-AB angle is strongly correlated with horizontal growth parameter, especially theSNB. The OP-AB angle is also correlated with vertical growth parameters: the Y axis and the Facial axis.
The OP-AB angle is a parameter that can distinguish between class III and class I malocclusions. The OP-AB angle has a strong correlation with vertical and horizontal growth directions.
咬合平面在口腔颌面部及美学牙颌面系统中非常重要。咬合平面的调整在III类错颌畸形矫治中起着重要作用。因此,建立诊断、预后和治疗计划的策略变得更加复杂,所以需要对咬合平面倾斜度作为诊断参数进行更全面的分析,以实现更有效和高效的治疗。
本研究的目的是确定III类错颌畸形与I类错颌畸形之间咬合平面倾斜度的比较,并了解III类错颌畸形中咬合平面倾斜度与面部生长方向的相关性。
样本为2017年10月至2018年在艾尔朗加大学(UNAIR)牙医院收集的双侧头颅侧位片。使用Orthovision软件对头颅侧位片进行描图;然后,进行曼-惠特尼比较统计检验(p<0.05),随后进行典型相关检验。
在OP-AB角和OP-FH角中发现了III类错颌畸形与I类错颌畸形的差异。OP-AB角是与其他角度相比相关性最强的咬合平面倾斜度。OP-AB角与水平生长参数密切相关,尤其是SNB。OP-AB角还与垂直生长参数相关:Y轴和面部轴。
OP-AB角是一个可以区分III类错颌畸形和I类错颌畸形的参数。OP-AB角与垂直和水平生长方向密切相关。