Biography
Kássia de Carvalho Dias, PhD Student, Department of Dental Materials and Prosthodontics, Araraquara School of Dentistry, UNESP (Univ. Estadual Paulista), Centro, 14801903, Araraquara, Sao Paulo, Brazil, Tel: 55 1633016300; E-mail: kassiaodonto@hotmail.com