Characteristics of mandibular masticatory movement path in the youth with AngleⅡ1 malocclusion
10.3969/j.issn.1001-3733.2016.01.025
- VernacularTitle:青年安氏Ⅱ类1分类错牙合患者下颌咀嚼运动轨迹特征的研究
- Author:
Xiaoyu LAI
;
Xuefeng LIN
;
Xiayi WU
- Publication Type:Journal Article
- Keywords:
Malocclusion;
Masticatory movement path;
Cephalometrics
- From:
Journal of Practical Stomatology
2016;32(1):115-119
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate characteristics of masticatory movement path in young adults with AngleⅡ1 malocclusion.Meth-ods:1 5 youths with normal occlusion(group Ⅰ)and 1 5 with AngleⅡ1 malocclusion(group Ⅱ)were included.Mandibular movement paths of the incisal point of the incisor during unilateral-sided gum-chewing were recorded by the BioEGN mandibular kinesiography an-alyzer.Both maximal distances and directions (FH-opening/closing angles)in sagittal plane were analyzed.The statistic analyses were performed with SPSS 1 3.0 software.Results:Lateral distances of left masticatory movement path in Group I and Group II were (8.24 ±1 .48)mm and (6.58 ±2.49)mm,those of right(8.05 ±1 .05)mm and (6.42 ±2.47)mm,respectively(P <0.05).The aver-age of FH-opening/closing angle of masticatory movement path in Group I was higher than that in Group II at each level(P <0.05)ex-cept 0.5 mm point in the left masticatory movement path.Conclusion:Maximal lateral distance and FH-opening/closing angle of mas-ticatory path in young adults with AngleⅡ1 malocclusion are less than those with normal occlusion.
