title: Influence of the internal conditioning of indirect restorations of resin composite in relation to microleakage using LEDs and QTH units.
abstract: The current study evaluated in-vitro microleakage of indirect composite inlays fixed with flowable composite and resinous cement and cured by LEDs and QTH units, thus modifying the internal conditioning of the inlays. Thirty-two non-carious teeth were selected and 64 cavity preparations were performed in both enamel and cementum. These teeth were divided into four groups: I--Elipar FreeLight appliance and Filtek Flowable composite; II--Ultralux appliance and Filtek Flowable composite; III--Elipar FreeLight appliance and RelyX cement and IV--Ultralux appliance and RelyX cement. The inlays were internally sandblasted with aluminum oxide, etched with 37% phosphoric acid, washed and silanized. The dental etching was carried out with 37% phosphoric acid for 15 seconds in dentin and 30 seconds in enamel. After being washed and dried, Single Bond dentinal adhesive was then applied, and the inlays were fixed with their respective luting agents, cured in close contact with their surfaces for 60 seconds, thermocycled and immersed in 0.5% basic fuchsine solution. The teeth were then washed and sectioned through the center of the restoration in order for the microleakage readings to be performed using the Image Tool Software. Then, ANOVA and Tukey's statistical tests were applied. In enamel, there was no significant difference for both groups with regard to microleakage; in cementum, the significant difference was 5% (p > 0.005). In agreement with the results, the inlays can be fixed with RelyX and Filtek Flowable resins.
authors: Department of Restorative Dentistry, School of Dentistry, University of Uberaba, Uberaba, MG, Brazil. saturnino.filho@uniube.br
authors: Saturnino
authors: S
authors: Calabrez-Filho
authors: Viviane Cardoso do Nascimento
authors: VC
authors: Calabrez
authors: Eduardo Gália
authors: EG
authors: Reston
authors: Marcelo Ferrarezi
authors: MF
authors: de Andrade
authors: Luis Henrique
authors: LH
authors: Borges
mesh_terms: D000134:Acid Etching, Dental; D000537:Aluminum Oxide / Q000737:chemistry; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D004396:Coloring Agents; D003188:Composite Resins / Q000737:chemistry / Q000528:radiation effects*; D055117:Curing Lights, Dental / Q000145:classification*; D003737:Dental Cavity Preparation / Q000379:methods; D003739:Dental Cementum / Q000473:pathology; D003743:Dental Enamel / Q000473:pathology; D045662:Dental Etching; D003763:Dental Leakage / Q000145:classification*; D003764:Dental Materials / Q000737:chemistry / Q000528:radiation effects*; D017220:Dentin-Bonding Agents / Q000737:chemistry; D006801:Humans; D007284:Inlays; D008422:Materials Testing; D010756:Phosphoric Acids / Q000737:chemistry; D011108:Polymers / Q000737:chemistry / Q000528:radiation effects; D019279:Resin Cements / Q000737:chemistry / Q000528:radiation effects; D012394:Rosaniline Dyes; D012821:Silanes / Q000737:chemistry; D013499:Surface Properties; D013696:Temperature
chemical_list: D004396:Coloring Agents; D003188:Composite Resins; D003764:Dental Materials; D017220:Dentin-Bonding Agents; C467913:Filtek Flow; D010756:Phosphoric Acids; D011108:Polymers; C528569:Rely-X; D019279:Resin Cements; D012394:Rosaniline Dyes; D012821:Silanes; C115612:single bond; D017438:Bisphenol A-Glycidyl Methacrylate; C025485:basic fuchsin; C030242:phosphoric acid; D000537:Aluminum Oxide