CAJ | 학술논문

背景:国内外学者研究发现Twinblock矫治器能有效促进安氏Ⅱ类错(牙合)患者的下颌骨生长,并改善其下颌后缩的侧貌.那么Twinblock矫治器除了促进下颌生长外,还具有哪些生长改良的作用而改变了Ⅱ类错牙厶患者颅颌面的软硬组织结构呢?目的:观察Twinblock矫治器治疗后Ⅱ类错(牙合)者颅颌面软硬组织的改变.方法:选择河北医科大学附属口腔医院正畸科的替牙晚期和恒牙早期安氏Ⅱ类1分类错牙合患者48例,男30例,女18例,年龄9.58～12.37岁,平均11.6岁.接受Twinblock治疗的恒牙早期安氏Ⅱ类1分类患者27例为治疗组,根据病例对照原则,选择放弃治疗的矫治恒牙早期安氏Ⅱ类1分类的患者21例为对照组.采用头影测量分析,比较治疗组治疗前后和对照组的变化.结果与结论:通过治疗组和对照组的对比分析,发现Twinblock矫治器一方面能增强自然生长过程中下颌长度的增长,出现上唇突度的减小和颏唇沟角减小的趋势,另一方面,Twinblock矫治器能抑制自然生长过程中面部垂直距离减小和面突度增加的趋势,使治疗后上下颌骨间在矢状方向的位差缩小,面型趋于协调.提示Twinblock对颌面部软硬组织有生长改良作用,Twinblock矫治器对安氏Ⅱ类错牙厶患者生长促进和生长抑制协同作用,使Ⅱ类错牙台患者的骨面型更加协调.
배경:국내외학자연구발현Twinblock교치기능유효촉진안씨Ⅱ류착(아합)환자적하합골생장,병개선기하합후축적측모.나요Twinblock교치기제료촉진하합생장외,환구유나사생장개량적작용이개변료Ⅱ류착아사환자로합면적연경조직결구니?목적:관찰Twinblock교치기치료후Ⅱ류착(아합)자로합면연경조직적개변.방법:선택하북의과대학부속구강의원정기과적체아만기화항아조기안씨Ⅱ류1분류착아합환자48례,남30례,녀18례,년령9.58～12.37세,평균11.6세.접수Twinblock치료적항아조기안씨Ⅱ류1분류환자27례위치료조,근거병례대조원칙,선택방기치료적교치항아조기안씨Ⅱ류1분류적환자21례위대조조.채용두영측량분석,비교치료조치료전후화대조조적변화.결과여결론:통과치료조화대조조적대비분석,발현Twinblock교치기일방면능증강자연생장과정중하합장도적증장,출현상진돌도적감소화해진구각감소적추세,령일방면,Twinblock교치기능억제자연생장과정중면부수직거리감소화면돌도증가적추세,사치료후상하합골간재시상방향적위차축소,면형추우협조.제시Twinblock대합면부연경조직유생장개량작용,Twinblock교치기대안씨Ⅱ류착아사환자생장촉진화생장억제협동작용,사Ⅱ류착아태환자적골면형경가협조.
BACKGROUND:Twin block appliance has been shown to effectively promote mandibular bone growth of Class Ⅱ malocclusion patients and improve lateral appearance of mandibular retrusion.The other improvement of Twin block appliance on hard-soft tissues remains unclear.OBJECTIVE:To assess the hard-soft tissue changes following Twinblock appliance treatment.METHODS:Atotal of 48 adolescent patients,30 males and 18 females,aged 11.6 years (range 9.58-12.37) with Class Ⅱ malocclusion were selected from Department of Orthodontics,Affiliated Stomatology Hospital of Hebei Medical University.Of them,27 were treated with Twinblock appliance as the treatment group,and 21 adolescent patients without treatments were selected as the control group.Cephalonetric analysis was used to compare the changes before and after treatment.RESULTS AND CONCLUSLON:Comparative analysis showed that Twinblock could effectively adjust or improve the effect of the natural growth,reduced upper lip convexity and mentolabial furrow angle.Moreover,Twinblock inhibited facial vertical distance reduction and facial convexity increase to decrease the potential differences between maxillary and mandibular bones in sagittal plance.Results show that Twinblock could effectively improve the profile of soft-tissues of Class Ⅱ malocclusion cases,