Effect of Irrigants and Cementum Injury on Diffusion of Hydroxyl Ions Through the Dentinal Tubules
Sherma Saif, Clifton M. Carey, Patricia Tordik
The purpose of this study was to measure hydroxyl ion diffusion through dentinal tubules. Eighty single-rooted teeth were instrumented and divided into 8 groups. Groups 1 and 3 were irrigated with 10 mL saline and 10 mL sodium hypochlorite (NaOCl), respectively. Groups 5 and 7 were irrigated with 3 mL and 1 mL of 17% ethylenediaminetetraacetic acid (EDTA) and 10 mL NaOCl, respectively. Groups 2, 4, 6 and 8 were irrigated as in groups 1, 3, 5 and 7, but calcium hydroxide was placed in the root canals. The pH was recorded for 30 days, a defect was made in the cementum, and the pH recorded for an additional 30 days. The greatest rise in post-defect pH was for group 6, which was significantly greater (p < 0.01) than all other groups. A final irrigation with 3 mL EDTA and 10 mL NaOCl allowed greater hydroxyl ion diffusion.
, Carey, C.
and Tordik, P.
Effect of Irrigants and Cementum Injury on Diffusion of Hydroxyl Ions Through the Dentinal Tubules, Journal of Endodontics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=852567
(Accessed December 5, 2023)