title: Microleakage of glass ionomer formulations after erbium:yttrium-aluminium-garnet laser preparation.
abstract: The aim of this study was to investigate the microleakage in class V cavities restored with four conventionally setting glass ionomers (CGIs) and one resin-modified glass ionomer (RMGI) following erbium:yttrium-aluminium-garnet (Er:YAG) laser or conventional preparation. Four hundred class V cavities were assigned to four groups: A and B were prepared by an Er:YAG laser; C and D were conventionally prepared. In groups B and D, the surface was additionally conditioned with Ketac conditioner. Each group was divided into five subgroups according to the glass ionomer cement (GIC) used: groups 1 (Ketac Fil), 2 (Ketac Molar), 3 (Ionofil Molar), 4 (Ionofil Molar Quick) and 5 (Photac Fil Quick). After thermocycling, a 2% methylene blue solution was used as dye. Scanning electron microscope (SEM) photographs were taken to show the conditioner's effect. Complete marginal sealing could not be reached. PhotacFil showed less microleakage than the conventionally setting glass ionomer cements (CGICs) investigated. Conditioning laser-prepared cavities did not negatively influence microleakage results except for Ionofil Molar Quick.
authors: Department of Operative Dentistry and Endodontology, Ghent Dental Laser Center, Dental School, Ghent University Hospital, Ghent University, De Pintelaan 185/P8, 9000 Gent, Belgium. katleen.delme@ugent.be
authors: Katleen I M
authors: KI
authors: Delmé
authors: Peter J
authors: PJ
authors: Deman
authors: Mieke A A
authors: MA
authors: De Bruyne
authors: Samir
authors: S
authors: Nammour
authors: Roeland J G
authors: RJ
authors: De Moor
mesh_terms: D003731:Dental Caries / Q000628:therapy; D003737:Dental Cavity Preparation / Q000379:methods*; D003743:Dental Enamel / Q000528:radiation effects / Q000648:ultrastructure; D003763:Dental Leakage / Q000209:etiology / Q000517:prevention & control; D018772:Dental Marginal Adaptation; D003793:Dental Restoration, Permanent / Q000379:methods; D003804:Dentin / Q000528:radiation effects / Q000648:ultrastructure; D005899:Glass Ionomer Cements; D006801:Humans; D066298:In Vitro Techniques; D053844:Lasers, Solid-State / Q000627:therapeutic use*; D008855:Microscopy, Electron, Scanning; D019279:Resin Cements
chemical_list: D005899:Glass Ionomer Cements; D019279:Resin Cements