CAJ | 학술논문

目的：研究垂直生长型安氏Ⅱ类1分类拔牙病例矫治前后鼻唇角的变化及其改变的相关性分析，为临床对错畸形的诊断与分析以及预测矫治后的疗效提供依据。方法选取38例垂直生长型安氏Ⅱ类1分类拔牙病例，矫治前后拍摄头颅侧位片，对18个软硬组织测量指标进行测量，对青少年与成人治疗前后变化量进行比较，并分析鼻唇角改变的相关性。结果青少年组与成人组鼻唇角均增大，但成人组鼻唇角改变更显著；U1?to?FH、U1?to?NA、U1-NA、Spr-Ptm在矫治后均减小，成人组减小更显著；青少年组上唇凹点厚度、上唇凸缘厚度、A’-Ptm、上唇长度以及鼻突度矫治后均增加，而成人均有一定程度的减小，差异有统计学意义。鼻唇角改变的相关性分析显示，两组U1?to?FH、U1?to?NA、U1-NA均有显著性的负相关，上唇倾角均有显著的正相关，并且成人相关性更显著；青少年组上唇凸缘厚度与鼻唇角呈负相关，而上唇凹点厚度与鼻唇角呈正相关，成人组这两项则无明显相关性。结论垂直生长型安氏Ⅱ类1分类青少年拔牙矫治后鼻唇角改变与上前牙硬组织以及上唇软组织均有相关性，而成人则只与上前牙硬组织相关。
목적：연구수직생장형안씨Ⅱ류1분류발아병례교치전후비진각적변화급기개변적상관성분석，위림상대착기형적진단여분석이급예측교치후적료효제공의거。방법선취38례수직생장형안씨Ⅱ류1분류발아병례，교치전후박섭두로측위편，대18개연경조직측량지표진행측량，대청소년여성인치료전후변화량진행비교，병분석비진각개변적상관성。결과청소년조여성인조비진각균증대，단성인조비진각개변경현저；U1?to?FH、U1?to?NA、U1-NA、Spr-Ptm재교치후균감소，성인조감소경현저；청소년조상진요점후도、상진철연후도、A’-Ptm、상진장도이급비돌도교치후균증가，이성인균유일정정도적감소，차이유통계학의의。비진각개변적상관성분석현시，량조U1?to?FH、U1?to?NA、U1-NA균유현저성적부상관，상진경각균유현저적정상관，병차성인상관성경현저；청소년조상진철연후도여비진각정부상관，이상진요점후도여비진각정정상관，성인조저량항칙무명현상관성。결론수직생장형안씨Ⅱ류1분류청소년발아교치후비진각개변여상전아경조직이급상진연조직균유상관성，이성인칙지여상전아경조직상관。
Objective This?study?aims?to?evaluate?the?nasolabial?angle?change?and?the?correlation?analysis?of?Angle’s?Class?Ⅱ?division?1?malocclusion?patients?with?vertical?growth?pattern?after?tooth?extraction?orthodontic?treatment?and?provide?experimental?results?to?help?in?making?orthodontic?treatment?plan?and?treatments.?Methods???A?total?of?38?Angle’s?Class?Ⅱ?division?1?malocclusion?patients?with?vertical?growth?pattern?and?tooth?extraction?orthodontic?treatment?were?included?in?this?study.?Pre-?and?post-treatment?cephalometric?X-rays?were?performed,?and?18?measurement?items?were?measured.?The?change?values?of?pre-?and?post-treatment,?youngsters,?and?adults?were?compared?to?analyze?the?correlation?of?the?nasolabial?angle?change.?Results???The?nasolabial?angle?between?youngsters?and?adults?was?enlarged?after?treatment,?but?the?nasolabial?angle?of?the?adult?group?changed?more?significantly.?U1?to?FH,?U1?to?NA,?U1-NA,?Spr-Ptm?were?reduced?after?treatment,?and?the?adult?group?decreased?more?significantly.?The?upper?lip?sulcus?and?flange?thickness,?A’-Ptm,?upper?lip?length,?and?nose?prominence?were?enlarged?after?the?adolescent?treatment,?but?the?adult?had?a?certain?degree?of?decrease.?The?difference?had?statistical?significance.?In?the?correlation?of?the?nasolabial?angle?change?analysis?of?the?two?groups,?namely,?U1?to?FH?,?U1-NA?and?U1?to?NA?had?significant?negative?correlation,?significant?positive?correlation?to?the?upper?lip?inclination?angle,?and?more?significant?correlation?in?the?adult?group.?Upper?lip?flange?thickness?and?nasolabial?angle?were?negatively?correlated,?and?the?upper?lip?sulcus?thickness?was?positively?correlated.?However,?no?significant?correlation?was?observed?between?these?two?in?the?adult?group.?Conclusion???The?nasolabial?angle?change?of?adolescents?with?vertical?growth?pattern?in?class?Ⅱ?division?1?malocclusion?after?extraction?treatment?is?related?to?the?upper?anterior?teeth?hard?tissue?and?upper?lip?soft?tissue,?whereas?only?adults?and?upper?anterior?teeth?hard?tissue?are?related.