Revista de Odontologia da UNESP
Revista de Odontologia da UNESP
Original Article

Evaluation of calcium release and pH value of light-cured cavity liners for pulp-capping materials

Avaliação da liberação de cálcio e alteração de pH de forradores cavitários fotoativados para capeamento pulpar

Kamila de Figueiredo PEREIRA; Rosymere Freitas de Sousa CRUVINEL; Andrea Abi Rached DANTAS; Milton Carlos KUGA


Abstract: Introduction: Cavity liners based calcium hydroxide present low strength and high solubility that is consider a disadvantage. In order to enhance these properties it was developed a light-cured cavity liner based calcium hydroxide containing resin.

Objective: The purpose of this study was to evaluate the pH and calcium release of light-cured cavity liners.

Material and method: There were prepared specimens (n=10) with the Ultra-Blend ® plus, Biocal® (light cured cements) and Hydro C® (control). The samples were stored in 10 mL of distilled water and maintained at 37 °C. After 24 hours, 7, and 14 days, there were analyzed pH and the release of calcium levels. The data were statistically analyzed by ANOVA and Tukey test (α = 0.05).

Result: The results of pH showed Hydro C > Ultra-Blend plus > Biocal. Biocal presented worst calcium release.

Conclusion: Light-cured materials present lower calcium release and alteration in pH values.


Calcium hydroxide, dental cavity lining, dydrogen-ion concentration


Resumo: Introdução: Forradores cavitários à base de hidróxido de cálcio apresentam baixa resistência e alta solubilidade. Para resolver este problema, foi desenvolvido forradores à base de hidróxido de cálcio fotoativáveis contendo resina para melhorar suas propridades.

Objetivo: A proposta deste estudo foi avaliar a alteração de pH e liberação de cálcio de forradores fotoativáveis.

Material e método: Foram preparadas amostras (n=10) com Ultra-Blend® plus, Biocal ® (cimentos fotoativáveis) e Hydro C® (controle). As amostras foram armazenadas com 10 mL de água destilada e mantidas em estufa à 37 °C. Depois de 24 horas, 7 e 14 dias, foram avaliados os níveis de liberação de cálcio e a alteração de pH. Os dados foram analisados estatisticamente pelo teste ANOVA, seguido do pós teste Tukey (α = 0.05).

Resultado: Os resultados de pH mostraram Hydro C > Ultra-Blend plus > Biocal. Biocal apresentou a pior liberação de cálcio.

Conclusão: Materiais fotoativados apresentam menor liberação de cálcio e alteração nos valores de pH.


Hidróxido de cálcio, forrador cavitário dental, concentração de íon de hidrogênio


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