Dental erosion among South Brazilian adolescents: A 2.5‐year longitudinal study

Abstract

Objectives: This population-based longitudinal study investigated the incidence, progression and risk factors for dental erosion among South Brazilian adolescents.Methods: Eight hundred and one schoolchildren attending 42 public and private schools were clinically examined at 12 years of age; clinical examinations were repeated after 2.5 years (SD=0.3). After tooth cleaning and drying, permanent incisors and first molars were classified using the Basic Erosive Wear Examination (BEWE) scoring criteria. Questionnaires were used to collect data on socio-demographic characteristics, dietary habits, toothbrushing frequency and general health. Poisson regression analysis was used to assess the association between dental erosion incidence and explanatory variables, with adjusted incidence risk ratios (IRR) and 95% CI estimated.Results: Among those who did not have dental erosion at baseline, 49 of 680 schoolchildren (7.1%; 95% CI=5.2-9.1) developed erosive lesions over the follow-up period. Among schoolchildren who had dental erosion at baseline, 31 of 121 (25.4%; 95% CI=17.6-33.3) had new or more severe lesions. Boys were more likely to develop dental erosion than girls (IRR=1.88; 95% CI=1.06-3.32).Conclusions: A moderate incidence of dental erosion was observed among South Brazilian adolescents, with boys being at higher risk. The high progression rate of 25% observed here is very concerning, and it should be taken in consideration when designing preventive strategies for dental erosion.epidemiology, tooth erosion, public health, risk assessment | INTRODUCTIONThere is growing evidence that the incidence of dental erosion among children and adolescents might be on the rise.1 Prevalence estimates in the last 10 years range between 13% and 75% among 12-year-olds in different populations, 2-9 and a recent systematic review estimated that approximately one-third of children and adolescents have erosive wear in permanent teeth. 10 These estimates seem to indicate that dental erosion will become a major dental public health concern in the near future.In spite of the wealth of data from cross-sectional studies, little is known about the incidence, and progression of dental erosion (or its risk factors) among youth. In a 2-year prospective cohort study of 1308 12-year-old adolescents from the UK, an incidence rate of 12.3% and progression rate of 27.0% were observed. 11 Boys, whites, and children living in conditions of social deprivation were more affected by dental erosion. El Aidi et al. 12 followed 395 12-year-old Dutch children attending a paediatric dental clinic for 1.5 years. The incidence rate of dental erosion was 15.8%, and new or more advanced lesions were found in 29.0% of individuals; dental erosion incidence and progression in molars were higher in boys than in girls.Recently, 175 13-14-year-old Swedish adolescents were followed for 4 years, 13 with an incidence of 76.0% and a progression rate at the individual level of 30.0% over the study period. Whereas very limited data on the incidence of and risk ...

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