6533b852fe1ef96bd12ab7e5

RESEARCH PRODUCT

Hot air stream reduces cytotoxicity of light-cured calcium hydroxide based cements

Flávia-carolina AbichKeiichi HosakaCelso-afonso Klein-juniorDiana-lina-bronca BorghettiFernando-freitas PortellaRoberto ZimmerEduardo-galia RestonDaniel-rodrigo Marinowic

subject

CementAir streamCalcium hydroxideChemistryResearchDental Pulp Cappingtechnology industry and agriculture:CIENCIAS MÉDICAS [UNESCO]Operative Dentistry and Endodonticschemistry.chemical_compoundPolymerizationDental cementUNESCO::CIENCIAS MÉDICASPulp (tooth)CytotoxicityGeneral DentistryNuclear chemistry

description

Background The light-cured calcium hydroxide based cements have incomplete polymerization and unconverted monomers can cause pulp cell damage. The aim of this study was to evaluate the influence of a warm and hot air stream on the cytotoxicity of light-cured calcium hydroxide based cements. Material and methods The materials Dycal (conventional cement), Biocal, Hidrox-Cal, and Ultra-Blend Plus (light-cured calcium hydroxide cements) were submitted to cytotoxicity analysis after polymerization, without vs. with previous heat treatment with a warm (37°C) and a hot (60°C) air stream. Following polymerization, cements were maintained in culture medium for 24 hours and 7 days, and subjected to the MTT test. Data were analyzed using analysis of variance (ANOVA) followed by post-hoc Student-Newman-Keuls ( Results The results indicated significant differences between the materials according to their composition, i.e., light-cured cements treated with a jet of warm air showed similar cytotoxicity levels to those observed for conventional cement, suggesting that they may be considered alternatives in cases requiring pulp-capping treatment. Conclusions Application of a hot air stream reduced cytotoxicity of materials tested. Key words:Dental pulp capping, dental cements, calcium hydroxide, cell survival.

yearjournalcountryeditionlanguage
2019-11-20
https://hdl.handle.net/10550/76020