下颌第二磨牙阻生的预防及其早期矫治的初步研究
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摘要
目的:探寻下颌第二磨牙阻生的危险因素,为早期矫治提供理论依据。方法:选取119例12-16岁正畸患者,根据下颌第二磨牙萌出情况分为阻生组和萌出组。测量上下颌骨多个变量进行两独立样本t检验,应用logistic回归分析确定下颌第二磨牙阻生的危险因素。结果:阻生组的SNB、ANB、下颌平面角(MP-FH)大于萌出组(P<0. 05),而下颌体长度(Go-Po)小于萌出组(P<0. 05)。两组间SNA、Y轴角、下颌骨长度(Co-Po)、下颌升支长度(Co-Go)、前下面高(ANS-Me)、下颌升支长度与下颌骨长度的比值(Co-Go/Co-Po)的差异没有统计学意义(P> 0. 05)。SNB、ANB、MP-FH是下颌第二磨牙阻生的危险因素。随访达2年时,两组间的ANB、MP-FH、Go-Po和SNB均没有统计学意义(P> 0. 05)。结论:骨性Ⅱ类高角患者更易发生下颌第二磨牙阻生。
Objective: To explore the risk factors of impacted mandibular second molar and provide theoretical basis for early orthodontic treatment. Methods: 119 orthodontic patients aged 12-16 year old were selected to the impaction group and the eruption group. Two independent samples t test and logistic regression analysis were used to determine the risk factors of impacted mandibular second molars. Results: SNB、ANB and MP-FH in the impaction group were larger than those in the eruption group(P<0.05), while Go-Po was less than that in the eruption group(P<0.05). There was no significant difference in SNA, Y-axis, Co-Po, Co-Go, ANS-Me and Co-Go/Co-Po between the two groups(P>0.05). SNB, ANB and MP-FH are risk factors for impaction of mandibular second molars. There was no statistically significant difference in ANB,MP-FH, Go-Po and SNB between the two groups at the end of the 2 years' follow-up(P>0.05). Conclusion: The mandibular second molar impaction is more likely to occur in the patients with skeletal pattern II with high angle.
Objective: To explore the risk factors of impacted mandibular second molar and provide theoretical basis for early orthodontic treatment. Methods: 119 orthodontic patients aged 12-16 year old were selected to the impaction group and the eruption group. Two independent samples t test and logistic regression analysis were used to determine the risk factors of impacted mandibular second molars. Results: SNB、ANB and MP-FH in the impaction group were larger than those in the eruption group(P<0.05), while Go-Po was less than that in the eruption group(P<0.05). There was no significant difference in SNA, Y-axis, Co-Po, Co-Go, ANS-Me and Co-Go/Co-Po between the two groups(P>0.05). SNB, ANB and MP-FH are risk factors for impaction of mandibular second molars. There was no statistically significant difference in ANB,MP-FH, Go-Po and SNB between the two groups at the end of the 2 years' follow-up(P>0.05). Conclusion: The mandibular second molar impaction is more likely to occur in the patients with skeletal pattern II with high angle.
引文
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[13]任家银,王虎,李果,等.成都地区12岁青少年第三磨牙发育的X线分析[J].国际口腔医学杂志,2012,39(3):297-300
[14]刘家强,吴勇,孙良严,等.不同年龄段正畸初诊患者颞下颌关节结构分析[J].口腔颌面修复学杂志,2016,17(6):338-341
[15]刘加强,吴勇,孙良严,等.颌骨垂直向异常患者中颞下颌关节结构的情况分析[J].口腔颌面修复学杂志,2015,16(6):335-338
[2]Cho Shiu yin,Ki Yung,Chu Vanessa,et al.Impaction of permanent mandibular second molar in ethic Chinese schoolchildren[J].J Can Dent Assoc,2008,74(2):e521
[3]Kenrad J,Vedtofte H,Andreasen JO,et al.A retrospective overview of treatment choice and outcome in 126 cases with arrested eruption of mandibular second molars[J].Clin Oral Investig,2011,15(1):81-87
[4]Cath rine MS,H eidrun KB.Impaction and retention of second molars:dignosis,treatment and outcome:A retrospective Follow-up study[J].Angle Orth od,2009,79(3):422-427
[5]李章一.下颌第三磨牙阻生与骨面型形态特征的相关性研究[J].实用口腔医学杂志,2014,30(1):106-109
[6]付雅丽,隋华超,王春玲.下颌骨形态与下颌第三磨牙阻生的相关性[J].山东医药,2014,54(8):81-83
[7]Srinivasan MR,Poorni S,Venkatesh A,et al.Prevalence of impacted permanent mandibular second molars in South Indian population:A cross-sectional study[J].Indian J Dent Res,2016,27(5):540-543
[8]乔峰,左志刚,张健.不同矢状骨面型患者下颌磨牙后间隙特征分析[J].天津医药,2014,42(3):268-270
[9]于泉,龚昕,嵇国平,等.正畸拔除下颌前磨牙对第三磨牙萌出影响的测量研究[J].实用口腔医学杂志,2010,26(1):103-107
[10]李菁,吕婴.青春发育高峰期骨性Ⅱ类女性正畸患者下颌骨生长量预测的研究[J].北京口腔医学,2010,18(3):158-161
[11]Jacob H B,LeMert S,Alex ander RG,et al.Second molar impaction associated with lip bumper therapy[J].Dental Press J Orth od,2014,19(6):99-104
[12]邓凯雄,刘进.拔除磨牙矫治对青少年第三磨牙牙根发育的影响[J].临床口腔医学杂志,2014,30(8):470-474
[13]任家银,王虎,李果,等.成都地区12岁青少年第三磨牙发育的X线分析[J].国际口腔医学杂志,2012,39(3):297-300
[14]刘家强,吴勇,孙良严,等.不同年龄段正畸初诊患者颞下颌关节结构分析[J].口腔颌面修复学杂志,2016,17(6):338-341
[15]刘加强,吴勇,孙良严,等.颌骨垂直向异常患者中颞下颌关节结构的情况分析[J].口腔颌面修复学杂志,2015,16(6):335-338