正畸牙移动对牙槽骨形态及骨密度的影响.pdf

正畸牙移动对牙槽骨形态及骨密度的影响张国华【摘要】背景:在正畸治疗过程中部分患者出现了牙齿松动、牙槽骨形态异常情况,甚至在一定程度上牙周疾病的概率有所增加.目的:分析正畸牙移动对牙槽骨形态及骨密度的影响.方法:纳入62例正畸治疗患者,其中男34例,女28例,年龄18-30岁,正畸治疗6个月后,利用三维锥形束CT机扫描患者上、下颌骨前牙区、后牙区、中切牙牙槽区,以及两侧中切牙与侧切牙牙槽间隔的骨密度.结果与结论:正畸治疗6个月后,所有患者牙齿坚固,未见异常动度,牙龈颜色呈现健康的粉红色,质地坚韧而不活动,探诊时无出血情况.正畸治疗前,上颌不同牙槽间隔牙槽骨密度比较差异无显著性意义(P>0.05),治疗6个月后比较差异也无显著性意义(P>0.05),但同一牙槽间隔正畸治疗6个月后的骨密度低于治疗前(P<0.05);下颌牙槽骨密度变化与上颌一致;上颌牙槽骨正畸治疗前后的骨密度均高于下颌牙槽骨(P<0.05).表明正畸治疗修复后可能出现下颌牙槽骨密度降低高于上颌牙槽骨的情况,但对整体正畸效果无明显影响,不影响牙槽骨形态和健康状况.%BACKGROUND:Somepatientsappeartohavelooseteethandalveolarabnormalitiesduringorthodontictreatment,andtosomeextent,theprobabilityofperiodontaldiseasehasincreased.OBJECTIVE:Toanalyzetheeffectsoforthodontictoothmovementonalveolarbonemorphologyandbonemineraldensity.METHODS:Sixty-twopatientsundergoingorthodontictreatmentwereenroled,including34malesand28female,agedfrom16to30years.After6monthsoforthodontictreatment,cone-beamCTscanningwasusedtodetectthebonemineraldensityinanteriortooth,posteriortoothandincisoralveolarregionsofthemaxilaandmandibleaswelasthealveolarspacebetweenbilateralcentralincisorsandlateralincisors.RESULTSANDCONCLUSION:After6monthsoforthodontictreatment,althepatientshadstrongteethwithnoabnormalmobility.Thegumswerehealthyandpink,andthetexturewastoughandinactive,withnobleedingduringprobing.Therewasnodifferenceinthebonemineraldensityofmaxilaryalveolarbonewithdifferentalveolarspacesbeforeand6monthsafterorthodontictreatment(P>0.05).However,thebonemineraldensityinthesamealveolarspacewasreducedsignificantlyafter6monthsoftreatment(P<0.05).Thebonemineraldensityofthemaxilaryandmandibularalveolarbonewasvariedconsistently.Inaddition,thebonemineraldensityofthemaxilaryalveolarbonewassignificantlyhigherthanthatofthemandibularalveolarbonebothbeforeandafterorthodontictreatment(P<0.05).Thesefindingsindicatethatunderorthodontictreatment,thebonemineraldensityofthemaxilaryalveolarbonemaybehigherthanthatofthemandibularalveolarbone,butthereisnoeffectonorthodonticresultsaswelasthemorphologyandhealthofalveolarbone.【期刊名称】《