Malpositions of anterior teeth can aesthetical influence, self appearance, the function of mastication and speech. Tooth Malpositions caused by imbalance between jaw and tooth. In general, male’s jaw is bigger than female’s. This enable to makes difference risk of malpositions of anterior teeth between male and female. The aim of this study to find information about to detect risk difference malpositions of anterior teeth in student of SMPN 6 Yogyakarta based on sex.
Research used observational method with cross sectional. The subjects of study were entire student of class VII SMPN 6 Yogyakarta that fulfil criteria and got that is 211 student are 91 students of male and 120 of female students. The objects of this study are jaw of anterior teeth on and lower jaw. The evaluation malpositions of anterior teeth was conducted by using form investigation based on sex are male and female, evaluation appropriate criteria prevalence malpositions of anterior teeth which cover mesioversion, distoversion, buccoversion, palatoversion, linguoversion, labioversion, torsiversion, transversion and axiversion was scored 1, while normal position was scored 0.
The results of the research were obtained by applying statistics method which used cross tabulation to obtain Odds Ratio (OR) and appropriate magnitude OR= 0,59, OR.
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