1. Weintraub Center for Reconstructive Biotechnology, Section of Prosthodontics, School of Dentistry, University of California, Los Angeles , Los Angeles, CA 90095, USA
2. Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais , Belo Horizonte, Minas Gerais, Brazil
3. Section of Restorative Dentistry, School of Dentistry, University of California, Los Angeles , Los Angeles, CA 90095, USA
4. Department of Bioengineering, Henry Samueli School of Engineering and Applied Sciences, University of California, Los Angeles , Los Angeles, CA 90095, USA