Prof. Dr. Sathyanarayanan Ramarao is restorative dentist and endodontist. He has open source knowledge base web site in his speciality along with his wife Prof. Dr. Carounanidy Usha. Their profile is available in the website www.onlinedentallearning.com. Clinical practice: Healthy smiles, Dental solution centre,21, s.v.patel road,Pondicherry. [email protected]