Ex vivo Evaluation of the Erosive Effect of Acid Tea Widely Consumed in Brazil

Introduction: Dental erosion is defined as the pathological, irreversible, chronic, and localised loss of dental enamel by prolonged acid action and often without bacterial involvement. Aim: To evaluate ex vivo, the erosive potential of widely consumed teas in Brazil by measuring the pH, titratable acidity of beverages and the roughness and surface microhardness of dental enamel before and after erosive challenges. Materials and Methods: Thirty human maxillary third molars, extracted for clinical reasons and obtained from Human Teeth Bank of the Dental School from 8th May 2017 to 18th May 2017 (Federal University of Juiz de Fora), were used to perform erosive cycles, which were exposed to Morinda citrifolia, Uncaria tomentosa, Caesalpinia ferrea, Schizolobium amazonicum, Schinus aroeira teas and 1% citric acid. The samples were immersed in the solutions for two minute, five times a day, at intervals of two hours for four days. Between the erosive cycles, the specimens remained in artificial saliva. Statistical analyses were performed using the IBM SPSS statistics version 22.0 software. The accepted significance was set has p-value