title: Glycerol Salicylate-based Pulp-Capping Material Containing Portland Cement.
abstract: The purpose of this study was to evaluate the water sorption, solubility, pH and ability to diffuse into dentin of a glycerol salicylate-based, pulp-capping cement in comparison to a conventional calcium hydroxide-based pulp capping material (Hydcal). An experimental cement was developed containing 60% glycerol salicylate resin, 10% methyl salicylate, 25% calcium hydroxide and 5% Portland cement. Water sorption and solubility were determined based on mass changes in the samples before and after the immersion in distilled water for 7 days. Material discs were stored in distilled water for 24 h, 7 days and 28 days, and a digital pHmeter was used to measure the pH of water. The cement's ability to diffuse into bovine dentin was assessed by Raman spectroscopy. The glycerol salicylate-based cement presented higher water sorption and lower solubility than Hydcal. The pH of water used to store the samples increased for both cements, reaching 12.59 ± 0.06 and 12.54 ± 0.05 after 7 days, for Hydcal and glycerol salicylate-based cements, respectively. Both cements were able to turn alkaline the medium at 24 h and sustain its alkalinity after 28 days. Hydcal exhibited an intense diffusion into dentin up to 40 µm deep, and the glycerol salicylate-based cement penetrated 20 µm. The experimental glycerol salicylate-based cement presents good sorption, solubility, ability to alkalize the surrounding tissues and diffusion into dentin to be used as pulp capping material.
authors: Dental Materials Laboratory, Dental School, UFRGS - Federal Universidade of Rio Grande do Sul, Porto Alegre, RS, BR.
authors: Fernando Freitas
authors: FF
authors: Portella
authors: Dental Materials Laboratory, Dental School, UFRGS - Federal Universidade of Rio Grande do Sul, Porto Alegre, RS, BR.
authors: Fabrício Mezzomo
authors: FM
authors: Collares
authors: Dental Materials Laboratory, Dental School, UFRGS - Federal Universidade of Rio Grande do Sul, Porto Alegre, RS, BR.
authors: Paula Dapper
authors: PD
authors: Santos
authors: Dental Materials Laboratory, Dental School, UFRGS - Federal Universidade of Rio Grande do Sul, Porto Alegre, RS, BR.
authors: Cláudia
authors: C
authors: Sartori
authors: Dental Materials Laboratory, Dental School, UFRGS - Federal Universidade of Rio Grande do Sul, Porto Alegre, RS, BR.
authors: Everton
authors: E
authors: Wegner
authors: Dental Materials Laboratory, Dental School, UFRGS - Federal Universidade of Rio Grande do Sul, Porto Alegre, RS, BR.
authors: Vicente Castelo Branco
authors: VC
authors: Leitune
authors: Dental Materials Laboratory, Dental School, UFRGS - Federal Universidade of Rio Grande do Sul, Porto Alegre, RS, BR.
authors: Susana Maria Werner
authors: SM
authors: Samuel
mesh_terms: D003785:Dental Pulp Capping / Q000295:instrumentation*; D005990:Glycerol / Q000737:chemistry*; D012459:Salicylates / Q000737:chemistry*
chemical_list: D012459:Salicylates; D005990:Glycerol