Influencia de la Mordida Cruzada posterior Unilateral en el crecimiento mandibular

Revista Latinoamericana de Ortodoncia y Odontopediatria

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】

Unknown