Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403


공학

한국표면공학회지 (41권5호 226-231)

Electrochemical Characteristics of Dental Implant in the Various Simulated Body Fluid and Artificial Saliva

다양한 유사체액과 인공타액에서 치과용 임플란트의 전기화학적 특성

김태한;박근형;손미경;김원기;장승현;최한철;
Kim, T.H.;Park, G.H.;Son, M.K.;Kim, W.G.;Jang, S.H.;Choe, H.C.;

조선대학교 치과대학 생체재료학교실 및 생체재료나노계면활성화센터, 2단계 BK21;
Department of Dental Materials & Research Center of Nano-Interface Activation for Biomaterials, College of Dentistry, 2nd Stage of Brain Korea 21 for College of Dentistry;

DOI : 10.5695/JKISE.2008.41.5.226

Abstract

Titanium and its alloy have been widely used in dental implant and orthopedic prostheses. Electrochemical characteristics of dental implant in the various simulated body fluids have been researched by using electrochemical methods. Ti-6Al-4V alloy implant was used for corrosion test in 0.9% NaCl, artificial saliva and simulated body fluids. The surface morphology was observed using scanning electron microscopy (SEM) and energy dispersive x-ray spectroscopy (EDX). The electrochemical stability was investigated using potentiosat (EG&G Co, 263A). The corrosion surface was observed using scanning electron microscopy (SEM). From the results of potentiodynamic test in various solution, the current density of implant tested in SBF and AS solution was lower than that of implant tested in 0.9% NaCl solution. From the results of passive film stability test, the variation of current density at constant 250 mV showed the consistent with time in the case of implant tested in SBF and AS solution, whereas, the current density at constant 250mV in the case of implant tested in 0.9% NaCl solution showed higher compared to SBF and AS solution as time increased. From the results of cyclic potentiodynamic test, the pitting potential and |$E_{pit};-;E_{corr}$| of implant tested in SBF and AS solution were higher than those of implant tested in 0.9% NaCl solution.

Keywords

Dental implant;Simulated body fluid;Artificial saliva;Electrochemical characteristics;Pitting potential;