EFFECT OF ROOT-CANAL TREATMENTS ON DENTIN PERMEABILITY

Calcium hydroxide has been used to slow or reverse external root resor ption subsequent to trauma. In this study, an experimental model was e stablished to study the diffusion of calcium ions from the canal to th e root periphery after various intracanal treatments. Analyses of calc ium ion concentrations from extraradicular samples revealed that denti n specimens varied in their rates of diffusion of calcium and that tre atment of the canals with various agents affected the amounts of calci um recovered.