Hsiao Szu-Yu, Chen Ying-An, Ting Chun-Chan
School of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
Department of Dentistry for Child and Special Needs, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
Biomed Res Int. 2021 Jul 15;2021:5536464. doi: 10.1155/2021/5536464. eCollection 2021.
The aim of the present study was to investigate the pharyngeal airway dimensions and their correlations among the craniocervical angle and skeletal patterns.
Cephalometric radiographs were obtained from 300 patients (≥15 years of age), of whom 150 were male patients and 150 were female patients. The patients were divided into three groups according to their skeletal patterns. The following dimensions were measured: NP: nasopharyngeal airway; PS: shortest distance from the soft palate to the pharyngeal wall; MP: Me-Go line intersecting the pharyngeal airway; TS: shortest distance from posterior tongue to pharyngeal wall; LP: laryngopharyngeal airway; UE length: shortest distance from the uvula to the epiglottis; PW: width of soft palate; PL: length of soft palate; ANB angle; palatal angle; and craniocervical angle. Paired -test, one-way analysis of variance (ANOVA), and Pearson correlation were applied for statistical analysis. The null hypothesis was that there were no differences among skeletal patterns in terms of pharyngeal airway dimensions.
The C4C2-SN angle of the Class II pattern (108.1°) was significantly greater than that of the Class III pattern (104.4°). The Class II PL was significantly longer than the Class III PL in the all patients and female patients groups. The ANB angle exhibited moderate positive correlation with palatal angle (: 0.462) and moderate negative correlation with TS (: -0.400) and MP (: -0.415) length. No significant differences were found in vertical hyoid lengths among all skeletal patterns. Class III (PS, TS, and MP) lengths were significantly greater than Class I and Class II in the all patients group. Regarding the LP length, no significant difference was found in the all patients group. Therefore, the null hypothesis was rejected.
Class III had significantly greater pharyngeal airway dimensions (PS, TS, and MP) than Class I and Class II. In all skeletal patterns, NP length was moderately correlated with the palatal angle. The PS was weakly negatively correlated with the ANB and PL. The TS and MP were moderately negatively correlated with the ANB angle.
本研究旨在探讨咽气道尺寸及其与颅颈角和骨骼模式之间的相关性。
对300例（≥15岁）患者进行头影测量X线片检查，其中男性患者150例，女性患者150例。根据骨骼模式将患者分为三组。测量以下尺寸：NP：鼻咽气道；PS：软腭至咽壁的最短距离；MP：与咽气道相交的Me-Go线；TS：后舌至咽壁的最短距离；LP：喉咽气道；UE长度：悬雍垂至会厌的最短距离；PW：软腭宽度；PL：软腭长度；ANB角；腭角；以及颅颈角。采用配对t检验、单因素方差分析（ANOVA）和Pearson相关性分析进行统计分析。原假设是骨骼模式在咽气道尺寸方面没有差异。
II类模式的C4C2-SN角（108.1°）显著大于III类模式（104.4°）。在所有患者和女性患者组中，II类PL显著长于III类PL。ANB角与腭角呈中度正相关（r = 0.462），与TS长度（r = -0.400）和MP长度（r = -0.415）呈中度负相关。在所有骨骼模式中，舌骨垂直长度未发现显著差异。在所有患者组中，III类（PS、TS和MP）长度显著大于I类和II类。关于LP长度，在所有患者组中未发现显著差异。因此，原假设被拒绝。
III类比I类和II类具有显著更大的咽气道尺寸（PS、TS和MP）。在所有骨骼模式中，NP长度与腭角呈中度相关。PS与ANB和PL呈弱负相关。TS和MP与ANB角呈中度负相关。
