1. Department of Endodontics, School of Dentistry, Federal University of Uberlândia, Uberlândia, MG, Brazil.
2. Functional and New Nanostructured Materials Laboratory, Physics Institute, Federal University of Alagoas, Maceió, AL, Brazil.
3. Institute of Chemistry, Federal University of Uberlândia, Uberlândia, MG, Brazil.
4. Department of Pediatric Dentistry, School of Dentistry, Federal University of Uberlândia, Uberlândia, MG, Brazil.