Revista Latinoamericana de Ortodoncia y Odontopediatria | |
Influencia de la Mordida Cruzada posterior Unilateral en el crecimiento mandibular | |
Estela González Vasquez1  Gisela Contasti1  | |
关键词: Crossbite; asymmetry; mandible; condyle; articular space; growth.; | |
DOI : | |
学科分类:口腔科学 | |
来源: Ortodoncia.ws | |
【 摘 要 】
Ahighnumberofpatientsdevelopfacialasymmetriesduringchildhood.Itisastageoffastgrowth,whereenvironmentalandhereditaryfactorsmayalterthedevelopmentoffacialstructures,suchasposteriorcrossbite.Themainobjectiveofthisstudyistoevaluatethevariationofmandibularmorphologyin34patientswithunilateralposteriorcrossbiteandcompareitwiththeresultsofsimilarinvestigationsandtheoriesofgrowthanddevelopment.Panoramicradiographieswereanalyzedintheaimtostudymandibularsymmetryandtheywereallocatedinto4groupsbasedonage:group1conformedby9childrenbetween5and7yearsold;group2by12patientsamong8and9yearsold;thethirdgroupinvolves7childrenbetween10and14yearsold,whilethelastgroupconsistsof6adults.Noneofthepatientshadreceivedpreviousorthodontictreatmentandtheyhadatleast2ormoreposteriorteethincrossbite;andthosewithasyndromethataffectedmandibulargrowthwereexcluded.Theresultsshowedasignificantpercentageofvariation;specificallythealterationofcondylarheightandarticularspace,beingincreasedonthenon-crossbiteside.Thecondylarwidthwasnotsignificanttoourinvestigationandtheangleofthearticulareminencewasasymmetricon20%ofthecasesstudied.Whencomparingthewidthandlengthofthemandibularramusandthelengthofthebody,thislastshowedthemostsignificantalteration;whichwasaugmentedonthenon-crossbiteside.Itwasconcludedthatunilateralposteriorcrossbiteproducemorphologicasymmetries;speciallyduetoanincreaseinthecondylelengthontheoppositesideofthemalocclusion.Inaddition,theasymmetrybecomesmoreevidentasthepatientages.
【 授权许可】
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【 预 览 】
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RO201912090819304ZK.pdf | 328KB | download |