Affiliation: | 1. Dental School, The University of Passo Fundo, PO Box 611/613, Campus I, BR 285, Km 171, Passo Fundo, RS 99001-970, Brazil;2. Dental Materials Division, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil;3. Division of Biomaterials & Biomechanics, Oregon Health & Science University, Portland, OR, USA |