Department of Medical Statistics, University Medical Center Göttingen, Robert-Koch-Straße 40, D-37099 Göttingen, Germany.
Eur J Orthod. 2012 Aug;34(4):437-41. doi: 10.1093/ejo/cjr039. Epub 2011 Apr 20.
A thorough understanding of the intraoral pressure conditions of patients with different forms of malocclusion may help to characterize their aetiology in more detail and improve orthodontic treatment approaches by adding strategies to achieve a normalization of intraoral pressure levels. These pressure curve analyses should not only provide information on intraoral activity or during rest but also detail characterization of swallowing features and pressure plateau stages. For this purpose, algorithms for extracting swallowing peaks and plateau stages were developed and evaluated. Established curve characteristics such as the average or maximum pressure as well as the number of swallowing peaks or resting phases were compared between each other. Their usefulness and correlation (Kendall's τ) were evaluated in a data example of different occlusal groups (Angle Class I: n = 30; Angle Class II division 1: n = 12; and Angle Class II division 2: n = 13). Curve characteristics were compared among these groups using the Kruskal-Wallis test. Some of the derived curve characteristics were found to be uncorrelated, thus providing different information concerning the intraoral pressure condition of subjects. Based on these findings, it is recommended to employ the curve characteristics described in this study to obtain a holistic image of factors that may affect the formation of the dentition.
深入了解不同错颌畸形患者的口腔内压力状况，可能有助于更详细地描述其病因，并通过添加策略来实现口腔内压力水平的正常化，从而改善正畸治疗方法。这些压力曲线分析不仅应提供关于口腔活动或休息期间的信息，还应详细描述吞咽特征和压力平台阶段的特征。为此，开发并评估了用于提取吞咽峰值和平台阶段的算法。比较了每个阶段的平均或最大压力以及吞咽峰值或休息阶段的数量等已建立的曲线特征。在不同咬合组（安氏 I 类：n = 30；安氏 II 类 1 分区：n = 12；安氏 II 类 2 分区：n = 13）的一个数据示例中评估了它们的有用性和相关性（Kendall's τ）。使用 Kruskal-Wallis 检验比较了这些组之间的曲线特征。发现一些衍生的曲线特征彼此不相关，从而提供了有关受试者口腔内压力状况的不同信息。基于这些发现，建议采用本研究中描述的曲线特征，以获得可能影响牙列形成的因素的整体图像。
