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Reduction in Dentin Permeability Using a Slurry Containing Dicalcium Phosphate and Calcium Hydroxide



Ai-Shuan(Maria) Cherng, Shozo Takagi, Laurence C. Chow


Treatments that obdurate dentin tubules have been used for reducing dentin hypersensitivity. This study was to determine the effect of a treatment with a slurry of micron sized calcium phosphate on the hydraulic conductance (Lp) of etched dentin discs in vitro. The treatment slurry was prepared by mixing a powder mixture of dicalcium phosphate anhydrous and calcium hydroxide (Ca (OH) 2) with a solution that contained NaF and carboxymethyl cellulose. The mean baseline Lp (in L cm-2 sec 1 H2O cm-1) was 2.07 1.45 (mean S.D.; n = 13, L cm-2 sec 1 H2O cm-1= 10.20 in L cm-1 min-1 Kpa- 1). After one treatment and 3, 5, and 8 days of incubation in a saliva like solution (SLS) the mean relative Lp, presented as % of baseline, were 65 16, 42 27, 36 26, and 33 27 (n = 13), respectively. The Lp values of the baseline and treatment after incubation in the SLS were significantly (p
Journal of Biomedical Materials Research


calcium phosphate, dentin permeability, hydraulic conductance, obruration, slurry


Cherng, A. , Takagi, S. and Chow, L. (2005), Reduction in Dentin Permeability Using a Slurry Containing Dicalcium Phosphate and Calcium Hydroxide, Journal of Biomedical Materials Research, [online], (Accessed May 22, 2024)


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Created September 9, 2005, Updated February 19, 2017