Dental Erosion and Its Risk Factors in 12-year-old School Children in Mashhad

Statement of problem: the dental hard tissues might be destroyed by differentfactors. one is dental erosion defined as the progressive loss of hard dental tissuesby a chemical process not involving bacterial action.purpose: the purpose of this study was to determine the prevalence of dentalerosion and its risk factors in 12-year-old school children.materials and methods: this cross-sectional study was carried out on 48312-year-old school children in mashhad, 2007. dental erosion was recorded forthe labial and palatal surfaces of the upper incisors. for measurement purposes,the o'sullivan's index was adopted, and the results were statistically analyzed byt-student and chi-square tests.results: the prevalence of dental erosion was 38.1%, with no significant sexdifference. dental erosion was significantly higher in private school children(p<0.001) and in underprivileged areas (p=0.005). matt appearance of the enamelwas the most prevalent type of dental erosion (21.2% central incisors, 5.2% lateralincisors). in most of the involved cases, more than half of their surfaces werediagnosed as affected by erosion (24.4% central incisors, 5.2% lateral incisors).the frequency consumption of carbonated beverages and night drinks illustrated asignificant relation with dental erosion (p=0.01, p=0.023). children who swamprofessionally in swimming pools had significantly higher dental erosion(p<0.001).conclusion: based on the findings of this study, individually tailored preventiveprograms may be recommended to patients and a comprehensive case historyshould be taken so that all risk factors can be revealed.