Abstract
PURPOSE: To evaluate the epidemiological characteristics of erosive tooth wear in primary school students aged 6-12 in Jinzhou, including: prevalence, severity, extent, intraoral distribution and associated risk factors. MATERIALS AND METHODS: The data collection consists of two parts: the first part is the clinical examination of the participants. All erupted teeth were clinically assessed by three calibrated examiners, and classified according to the basic erosive wear examination (BEWE); The second part is a questionnaire about demographic information, parafunctional movement and lifestyle, completed by the parents or their guardians. RESULTS: A total of 1,469 children were included in this experiment; erosive tooth wear (ETW) prevalence (BEWE ≥ 1) was 54.9%. According to cumulative BEWE index, the proportion of different ETW severity (high, medium, low, none) was 6.8%, 16.3%, 27.0% and 49.9%, respectively. In an analysis of risk factors, family factor, age, gender, extracurricular study time, oral hygiene habit, bruxism, unilateral mastication and acid diet was associated with the prevalence of ETW. CONCLUSIONS: This study shows that ETW has a high prevalence in students aged 6-12, and more common in deciduous molars and deciduous canine. Abrasion, attrition and erosion play an important role in ETW.