Aging and erosive tooth wear in subjects with normal occlusion: a 47-year follow-up

• Autor(a) principal: Eto, Henrique Campos
• Data de Publicação: 2021
• Tipo de documento: Dissertação
• Idioma: eng
• Título da fonte: Biblioteca Digital de Teses e Dissertações da USP
• Texto Completo: https://www.teses.usp.br/teses/disponiveis/25/25144/tde-23112021-124037/
• topic: Aging; Dental models; Desgaste dentário; Diagnosis; Diagnóstico; Envelhecimento; Estudos longitudinais; Longitudinal studies; Modelos dentários; Tooth wear

Introduction: The aim of this study was to assess the erosive tooth wear (ETW) occurred along five decades, from adolescence to 60 years of age, in subjects with normal occlusion; and to evaluate the predictive potential of ETW index in adolescence or early adulthood as a discriminator factor of ETW degree in the mature adulthood. Methods: The sample consisted of digital dental models of 23 subjects with natural normal occlusion (10 female, 13 male) and no need of orthodontic treatment. Dental models were taken longitudinally at 13 (T1), 17 (T2) and 60 years of age (T3). Evaluation of ETW was performed using a modified BEWE index (The Basic erosive wear examination). Interphase changes were evaluated using Friedman test and Dunns Method. Logistic regression was used to assess the influence of sex, dental arch, tooth and dental surfaces on the degree of ETW. Linear regression was used to evaluate if ETW degree in T1 and T2 could discriminate the degree of ETW in T3. The significance level adopted was 5%. Results: Erosive tooth wear showed a significant increase with aging. The median ETW index at T1, T2 and T3 was 2, 4 and 7, respectively. Erosive tooth wear was greater in male, in the incisors and canines and in the occlusal and lingual surfaces. No differences were found between the maxillary and mandibular teeth. The ETW index at 17 years of age (T2) was an adequate predictive factor of tooth wear at 60 years of age. The critical limit for BEWE score at T2 was 4. Conclusions: Erosive tooth wear significantly increased during aging in subjects with normal occlusion. The greater the degree of tooth wear at early adulthood, the greater the degree of tooth wear at mature adulthood. Preventive care should be recommended during early adulthood for patients with a critical BEWE greater than 4.