1 Clinical Dentistry, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, California, USA.
2 IMSC (Integrated Media Systems Center), Viterbi School of Engineering, University of Southern California, Los Angeles, California, USA.
3 Department of Prosthodontics, Showa University School of Dentistry, Tokyo, Japan.
4 Clinical Dentistry, Orofacial Pain and Oral Medicine, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, California, USA.