[1] Univ Estadual Ponta Grossa, Sch Dent, Ponta Grossa, Brazil
[2] Univ Chile, Fac Dent, Inst Res Dent Sci, Santiago, Chile
[3] Finis Terrae Univ, Fac Dent, Santiago, Chile
[4] Univ Northern Parana, Postgrad Program Dent, Londrina, Brazil
[5] Univ Chile, Fac Dent, Dept Restorat Dent, Santiago, Chile
[6] Univ Autonoma Chile, Inst Ciencias Biomed, Providencia, Chile
[7] Univ Estadual Ponta Grossa, Dept Restorat Dent, Ponta Grossa, Brazil