Dr.SHIVA LIVE: Building Awareness of Masks, Oral Health, Systems Health. Science and Public Policy Implications Dr.SHIVA Ayyadurai, MIT PhD in Biological Engineering, the Inventor of Email, Scientist, Educator, Statesman discusses the need to share the science of masks and oral health, as well as to build awareness of the many public policy implications. Oral health is the gateway to systems health of the entire body.