Himalaya Hmm I know those students. They have already graduated. The picture was taken during white coat ceremony. BTW We are conducting studies on OZONE and Chlorhexidine varnish to prevent dental caries. We do all the FILLINGS and compensate for all the visits. If anyone interested call 617 636 3932 and ask for a Nepali Dentist, if you are not skeptical about researsch studies.