Science and Education Publishing Journal of Materials Physics and Chemistry 1 1 2013 10 31 The Study of the Electrochemical Deterioration of Human Teeth in Oral Cavity and the Role of Saliva 45 50 EN Nathan Meka Department of Chemistry, College of Natural Sciences, Bahir Dar University, Bahir Dar, Ethiopia Assefa Sergawie Khalid Siraj JMPC2013134 10.12691/jmpc-1-3-4 2013 08 05 2013 10 06 2013 10 31 This work is carried out to confirm the existence of the surface potentials in extracted tooth by electrochemical method. The surface potentials were measured between enamel crown’s buccal side and tooth root. Surface potentials examined in all the teeth in the presence of KCl. It is found that potential increased with increasing KCl concentration and after acid corroded. The results suggest that potentials can be affected by the surrounding electrolytes and establish an electrical double layer. It is also found that on passing electric current through enamel causes degradation.