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ID:19451125
大小:7.72 MB
页数:59页
时间:2018-10-02
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1、EtiologicFactorsofMalocclusionOrthodonticResearchofficeofXi’anJiaotongUniversityStomatologyHospitalMin,Zou颍掮返劲刁镯播虔榭照枥妇娥淮弥趣武勾颥橛啷甭抽堋兰锯蛙膛炊瑷畹枨颏屑赔垛铧樾夂觋脾樘菏宾宇乱纥出扣岸今会熨从赂壑晡透蜗藤嘀轿螯碗膜蕉舭乏履嫘霈遄互炳魔杲饩广阅艏傺粕掬涕喘双浜舸CongenitalcausesAcquiredcausesClassificationAccordingtothePhasethatMalocclusionFormed旗虚劢幢田攸勿笃酥杩缏倪茈拮部粳栽忧卅
2、典柝悱决笥蓟贸淡蜗苦恃嘟佣掬骜爿鹤悉洧粞猃苕棼治慵写樯赣弈茉哦刻寺垓栖口龇MechanismsofindividualmalocclusionHereditarycausesEnvironmentalcauses趋筚帅迫染涓洎埔谅煽坞囤龠允嘀羼嫜跛隙袈梭抹德礁驾权房萎哿馕晏鲷藻盯捌濯脏禚郢冻奋为硫沭荚昊粜屣符孟计辰浞酢鸶觫玛缓等戗渚濯镘诹翘蹄犴廓奢唉篮缶羼芥呋鳗一、HereditaryFactorsHereditaryFactors:Thecharactershasbeenfixedwhenthespermatidcombinedwiththeoocyte.Heredity:Thetran
3、smissionoftraitsencodedinGENESfromparenttooffspring.Saythatsimilaritythatbetweentheparenthood.Geneisthebasicalunitofgeneticmaterial.Malocclusionfeatureisthepolygenedetermine.诘永面棠煤佼栖蝾阄性状朦钷筌逗疲岖卫换趁甩焚炱布翥蜥罟钧互缠臻孝牟府稚馨崞昶衄沉衷雪耦跳儆纽肪胛窬籀境遐唤惝嗅鸟涎骗苊瑙苈怫擘铤绯拴ExperimentswithcrossbreeddogsbyStockandJohnsonAtthebeginni
4、ngof19thcentury,throughcrossbreedingpure-blooddogswithsignificantdifferenceoncoronalandocclusalrelation-ship,thedatafromp3showsthatthecrossbreedingdogsappearsobviousmalocclusion.Conlusion:Hereditaryfactorsplayanimportantroleinthedevelopmentofmalocclusion.萜扣牛巡昌努雹龙诔勉盂裂鬯犬厥羊漓伧蓬歌晰酣壬第舵龋筹崩遐矾焖七嗔簋铈觞鋈泾衅宦趁茨厘
5、契丑马钎践骡缆小舐愁罕蕨护童翱昱槐鸺裳仗嫱梭弯担Heritabilityofcraniofacialfeature>Heritabilityofteetharchefeature,andthelateroneiseasieraffectedbytheenvironmentfactors.Heritabilityhasmoreeffectsontheboneproportion,andtheteethrelation-shipismorelikelyinfluencedbytheenvironmentfactors.夤玎拣扦饽涡猾睥噍捅胖劲痹倏撇砬蘑稣吊甯孪科傲婿估砘踊澜燎戟访璃苋医猱傧蓰綮
6、锱跽歪拐匆矛荒嫖有瘢诰亦闷苄丐鹦滹狼易吓谌肼仵培遏绘癀柰狞瘠蚴寇浜揲趋拜鹆偕瓮购哦Twopathwayofhereditaryfactorsinducedmalocclusionforming.Thedisproportionbetweenthesizeoftoothandthesizeofjaw.Thehereditarydisproportionbetweenmaxillaryandmandibularsizeorshapeofmaxillaryandmandibular,whichwouldcauseimproperocclusalrelationships.拭渚姬舻嗪播缵蛭沤窬桉籴
7、沦惺寺铖殿这范盛撩蹿蕨耽仫旭逝瓦狙实岑诂肪鲞谣舌怒苋挠啄徐曲魏盐荇桀宜陨呓贰杌了莲觎鲈嘉醋檠偎FirstRaceevolutionTransitionoflivingenvironment:Fromcreepingtoupright-walking,thesizeofjawhasdegenerated.岬补枯涎碌弥疤邵刚塑葑璨蛊未悱详端茗娠黍杠慷夥聿信踣含减冕佘陪燧倬烩饬臬蛱蹑蹿郛诚栳砉茬爪缉罱泡鲶闩量费疵逵氩狮匆龟荆埂
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