title: Intrapulpal Thermal Changes during Setting Reaction of Glass Carbomer® Using Thermocure Lamp.
abstract: Objectives. To measure the temperature increase induced during thermocure lamp setting reaction of glass carbomer and to compare it with those induced by visible light curing of a resin-modified glass ionomer and a polyacid-modified composite resin in primary and permanent teeth.Materials and Methods. Nonretentive class I cavities were prepared in extracted primary and permanent molars. Glass carbomer (GC) was placed in the cavity and set at 60°C for 60 sn using a special thermocure lamp. Resin-modified glass ionomer (RMGIC) and polyacid-modified composite resin (PMCR) were placed in the cavities and polymerized with an LED curing unit. Temperature increases during setting reactions were measured with a J-type thermocouple wire connected to a data logger. Data were examined using two-way analysis of variance and Tukey's honestly significant difference tests.Results. The use of GC resulted in temperature changes of 5.17 ± 0.92°C and 5.32 ± 0.90°C in primary and permanent teeth, respectively (p> 0.05). Temperature increases were greatest in the GC group, differing significantly from those in the PMCR group (p< 0.05).Conclusion. Temperature increases during polymerization and setting reactions of the materials were below the critical value in all groups. No difference was observed between primary and permanent teeth, regardless of the material used.
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Selcuk University, Konya, Turkey.
authors.forename: Firdevs
authors.identifier: 0000-0003-4216-0849
authors.initials: F
authors.lastname: Kahvecioglu
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Selcuk University, Konya, Turkey.
authors.forename: Gül
authors.initials: G
authors.lastname: Tosun
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentistry, Selcuk University, Konya, Turkey.
authors.forename: Hayriye Esra
authors.identifier: 0000-0002-2967-5680
authors.initials: HE
authors.lastname: Ülker
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry / Q000528:radiation effects / Q000627:therapeutic use*; D003188:Composite Resins / Q000737:chemistry / Q000528:radiation effects / Q000627:therapeutic use*; D055117:Curing Lights, Dental; D001840:Dental Bonding; D003764:Dental Materials / Q000737:chemistry / Q000627:therapeutic use; D003786:Dental Pulp Cavity / Q000187:drug effects* / Q000601:surgery; D003804:Dentin / Q000473:pathology / Q000528:radiation effects; D005899:Glass Ionomer Cements / Q000528:radiation effects / Q000627:therapeutic use; D006801:Humans; D008963:Molar / Q000187:drug effects* / Q000473:pathology; D058105:Polymerization
chemical_list: D000180:Acrylic Resins; D003188:Composite Resins; D003764:Dental Materials; D005899:Glass Ionomer Cements; C479038:carbomer