CAJ | 학술논문

目的研究未治疗的安氏Ⅰ类错(牙合)患者下颌骨生长发育特点,为临床上安氏Ⅰ类错(牙合)的治疗提供参考.方法收集安氏Ⅰ类错(牙合)病例909例,按性别和颈椎骨龄(cervical vertebral maturation,CVM)分期分组,通过头影测量片测量不同性别不同颈椎分期患者下颌骨的长度及高度变化,方差分析后进行组间多重对比.结果无论男女SNB、SND角均逐渐增大,但差值并无统计学意义.在CS1-CS2和CS3-CS4期男性下颌骨升支生长量分别为3.54 mm、3.70 mm,下颌骨水平部生长量分别为3.86 mm和4.27 mm,下颌骨总长度生长量为6.46 mm和6.22 mm,增长都很显著(P＜0.01).女性CS1-CS2和CS3-CS4期间下颌升支生长量为3.42 mm和3.00 mm,下颌骨总长度生长为5.94 mm和3.69 mm,下颌骨水平部在CS1-CS4出现持续增长(P＜0.05).下面高在CS1-CS4期间出现明显的增长(P＜0.05),但女性在CS4期之后增长缓慢.结论男女性患者下颌骨生长发育高峰期均出现在CS1-CS2和CS3-CS4期,女性下颌水平部在CS1-CS4期呈持续增长.下前面高生长较早,后面高增长较下前面高快,导致下颌平面角减小.
목적 연구미치료적안씨Ⅰ류착(아합)환자하합골생장발육특점,위림상상안씨Ⅰ류착(아합)적치료제공삼고.방법 수집안씨Ⅰ류착(아합)병례909례,안성별화경추골령(cervical vertebral maturation,CVM)분기분조,통과두영측량편측량불동성별불동경추분기환자하합골적장도급고도변화,방차분석후진행조간다중대비.결과 무론남녀SNB、SND각균축점증대,단차치병무통계학의의.재CS1-CS2화CS3-CS4기남성하합골승지생장량분별위3.54 mm、3.70 mm,하합골수평부생장량분별위3.86 mm화4.27 mm,하합골총장도생장량위6.46 mm화6.22 mm,증장도흔현저(P＜0.01).녀성CS1-CS2화CS3-CS4기간하합승지생장량위3.42 mm화3.00 mm,하합골총장도생장위5.94 mm화3.69 mm,하합골수평부재CS1-CS4출현지속증장(P＜0.05).하면고재CS1-CS4기간출현명현적증장(P＜0.05),단녀성재CS4기지후증장완만.결론 남녀성환자하합골생장발육고봉기균출현재CS1-CS2화CS3-CS4기,녀성하합수평부재CS1-CS4기정지속증장.하전면고생장교조,후면고증장교하전면고쾌,도치하합평면각감소.
Objective To investigate the characteristics of mandibular growth in untreated Class Ⅰ malocclusion subjects.Methods The sample consisted of 909 subjects with Class Ⅰ malocclusion who were divided into six groups according to their gender and CVM(cervical vertebral maturation).The length and height of mandible were measured from their cephalograms.The data were analyzed by SPSS18.0.Results SNB angle and SND angle increased in all groups,but no statistically significant difference was found.During the stage of CS1-CS2,Co-Go,Go-Gn,Co-Gn increased by 3.54 mm,3.86 mm and 6.46 mm in males,and in females Co-Go,Go-Gn,Co-Gn increased by 3.42 mm,2.94 mm and 5.94 mm,respectively,and all of them showed statistically significant difference.During the stage of CS3-CS4,Co-Go,Go-Gn,Co-Gn also showed statistically significant increment in males and females,the average value were 3.70 mm,4.27 mm and 6.22 mm in males,3.00 mm,1.73 mm and 3.69 mm in females.The average value of ANS-Me increased from CS1 to CS4,but after CS4 it grew slowly in females.Conclusions The length of mandible had greatest growth in CS1-CS2 and CS3-CS4 in both males and females.The mandibular body length increased significantly from CS1 to CS4.Anterior facial height increased in the earlier stage.Because the posterior facial height increased faster than anterior facial height,the average value of mandibular plane angle decreased.