“…The effect of the crevice gap on the solution conductivity, iR drop, and charge density in the titanium crevice solution is investigated in detail. Models of similar purpose have been constructed by several authors-Oldfi eld and Sutton, 1 Bernhardsson, et al, [2][3] Fu and Chan, 4 Alkire and Siitari, 5 Hebert and Alkire, 6 Turnbull and Ferris, 7 Sharland, [8][9] Watson, 10 Watson and Postlethwaite, [11][12] Evitts, et al, [13][14][15][16] Evitts,17 Postlethwaite, et al, 18 Walton, et al, 19 Oldfi eld, et al, 20 Heppner, et al, [21][22] and others. The present work uses the mass-transport model of Watson and Postlethwaite [11][12] but improves the solution through adjustment of chemical equilibrium for nonideality and through incorporating the effect of solution charge density on ionic migration.…”