Jadhav Pallavi Jeetesh, Sonawane Shivprasad Vasant, Mahajan Nikhil, Chavan Bhushan Gorakh, Korde Swapnil J, Momin Naufil Mushtaque, Mahale Priyanka R
Department of Orthodontics and Dentofacial Orthopedics, Bharati Vidyapeeth (Deemed to be) Dental College and Hospital, Navi Mumbai, Maharashtra, India.
Department of Orthodontics and Dentofacial Orthopedics, SMBT Institute of Dental Sciences and Research, Nashik, Maharashtra, India.
J Pharm Bioallied Sci. 2021 Nov;13(Suppl 2):S1111-S1114. doi: 10.4103/jpbs.jpbs_349_21. Epub 2021 Nov 10.
To test the hypothesis that there is no positive correlation between skeletal Class II and mandibular morphology with pharyngeal dimensions in subjects with different growth patterns.
Lateral cephalograms of 60 patients were collected and divided into 2 groups, comprising of 30 in each group. Group 1 consisted of cephalograms of patients having Class I malocclusion, and was further divided into subgroups. 1a) Class I with normal growth 1b) Class I with vertical growth. Group 2 consisted of cephalograms of patients having class II malocclusion and was further divided into subgroups 2a) Class II with normal growth, 2b) Class II with vertical growth.
The results showed that the estimated marginal mean for upper pharyngeal width in class I malocclusion group was 8.56 mm, for class II malocclusion group was 7.80 mm, for normal growth individuals was 9.73 mm and that for vertical growth individuals was 6.63 mm. The estimated marginal mean for lower pharyngeal width in class I malocclusion group was 9.62 mm, in class II malocclusion group was 9.10 mm, in normal growth individuals was 8.95 mm and that in vertical growth individuals was 9.77 mm. The estimated marginal mean for pharyngeal area in class I malocclusion group is 330.13 sq.mm, in class II malocclusion group is 308.17 sq.mm, in normal growth individuals is 328.47sq.mm and that in vertical growth individuals is 309.83 sq.mm.
The null hypothesis for this study, as per the statistical analysis, has been rejected.
检验不同生长模式受试者中骨骼II类错合与下颌形态和咽部尺寸之间不存在正相关这一假设。
收集60例患者的头颅侧位片并分为2组，每组30例。第1组由安氏I类错合患者的头颅侧位片组成，并进一步分为亚组。1a）生长正常的安氏I类；1b）垂直生长型安氏I类。第2组由安氏II类错合患者的头颅侧位片组成，并进一步分为亚组2a）生长正常的安氏II类，2b）垂直生长型安氏II类。
结果显示，安氏I类错合组上咽部宽度的估计边际均值为8.56mm，安氏II类错合组为7.80mm，生长正常个体为9.73mm，垂直生长个体为6.63mm。安氏I类错合组下咽部宽度的估计边际均值为9.62mm，安氏II类错合组为9.10mm，生长正常个体为8.95mm，垂直生长个体为9.77mm。安氏I类错合组咽部面积的估计边际均值为330.13平方毫米，安氏II类错合组为308.17平方毫米，生长正常个体为328.47平方毫米，垂直生长个体为309.83平方毫米。
根据统计分析，本研究的原假设被拒绝。
