Maroneze MC, et al. - Via performing a sequential explanatory mixed methods design, researchers assessed and understood the effect of dental treatment on adolescents' oral health-related quality of life (OHRQoL). Study participants included 182 adolescents (aged 10 to 15 years) who had finished their dental treatment at the adolescent dental clinic of Federal University of Santa Maria from 2010 to 2016. Investigators found that the effect sizes ranged from 0.35 to 1.00 and the most important effect was the oral symptoms domain. For adolescents, dental treatment has an uncountable meaning because it has a psychosocial meaning in this phase of life and it can improve their OHRQoL.