Kevin Rion
Professor
krion@bridgew.edu
Department of Mathematics
Bridgewater State University
MA 02325, USA

Irina Seceleanu
Professor
iseceleanu@bridgew.edu
Department of Mathematics
Bridgewater State University
MA 02325, USA

Wanchunzi Yu
Associate Professor
wyu@bridgew.edu
Department of Mathematics
Bridgewater State University
MA 02325, USA

We would like to extend our gratitude to Dr. Nicoleta Corcodel, DDS, for her assistance in identifying pertinent dental studies for this handbook and for her guidance in clarifying dental concepts to us.