Prevalence and morphometric analysis of three-rooted mandibular first molars in a brazilian subpopulation - Rodrigues, Clarissa Teles; Oliveira-Santos, Christiano de; Bernardineli, Norberti; Duarte, Marco Antonio Hungaro; Bramante, Clovis Monteiro; Minotti-Bonfante, Paloma Gagliardi; Ordinola-Zapata, Ronald (Journal of Applied Oral Science, 2016)