Microleakage of silorane- and methacrylate-based class V composite restorations. 2012

Stephanie Krifka, and Marianne Federlin, and Karl-Anton Hiller, and Gottfried Schmalz
Department of Operative Dentistry and Periodontology, University of Regensburg Medical Centre, Franz Josef Strauß Allee 11, 93042 Regensburg, Germany. Stephanie.Krifka@klinik.uni-regensburg.de

The marginal integrity of class V restorations in a silorane- and a group of methacrylate-based composite resins with varying viscosities was tested in the present study. Different adhesives (OptiBond FL, KerrHawe; AdheSE One, Vivadent; or Silorane System Adhesive, 3M ESPE) were applied to 168 standardized class V cavities. The cavities (n = 12) were filled with a wide range of different viscous composite resins: Filtek Silorane, 3M ESPE; els and els flow, Saremco; Tetric EvoCeram and Tetric EvoFlow, Vivadent; Grandio, Voco; and Ultraseal XT Plus, Ultradent. Microleakage of the restoration was assessed by dye penetration (silver staining) on multiple sections with and without thermocycling and mechanical loading (TCML: 5,000 × 5-55°C; 30 s/cycle; 500,000 × 72.5 N, 1.6 Hz). Data were statistically analyzed with the Mann-Whitney U test and the Error Rates Method (ERM). The silorane-based composite resin yielded the lowest dye penetration after TCML. Microleakage of methacrylate-based composite restorations, in general (ERM), was statistically significantly influenced by the adhesive system, Moreover, dye penetration at enamel margins was significantly lower than dye penetration at dentin margins. The chemical basis of composite resins and adjacent tooth substance seems to strongly influence marginal sealing of class V restorations for methacrylate-based materials. Moreover, the steps of dental adhesives used affected marginal integrity. The silorane-based composite resin evaluated in the present study exhibits the best marginal seal. The three-step adhesive yielded better marginal sealing than the one-step adhesive for methacrylate-based class V composite restorations.

UI MeSH Term Description Entries
D008422 Materials Testing The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility. Biocompatibility Testing,Biocompatible Materials Testing,Hemocompatibility Testing,Testing, Biocompatible Materials,Testing, Hemocompatible Materials,Hemocompatibility Testings,Hemocompatible Materials Testing,Materials Testing, Biocompatible,Materials Testing, Hemocompatible,Testing, Biocompatibility,Testing, Hemocompatibility,Testing, Materials,Testings, Biocompatibility
D008689 Methacrylates Acrylic acids or acrylates which are substituted in the C-2 position with a methyl group. Methacrylate
D010895 Pit and Fissure Sealants Agents used to occlude dental enamel pits and fissures in the prevention of dental caries. Dental Sealant,Dental Sealants,Fissure Sealant,Fissure Sealants,Pit And Fissure Sealant,Pit Fissure Sealant,Sealants, Tooth,Pit Fissure Sealants,Sealants, Dental,Fissure Sealant, Pit,Fissure Sealants, Pit,Sealant, Dental,Sealant, Fissure,Sealant, Pit Fissure,Sealant, Tooth,Sealants, Fissure,Sealants, Pit Fissure,Tooth Sealant,Tooth Sealants
D003188 Composite Resins Synthetic resins, containing an inert filler, that are widely used in dentistry. Composite Resin,Resin, Composite,Resins, Composite
D003736 Dental Cavity Lining An inner coating, as of varnish or other protective substance, to cover the dental cavity wall. It is usually a resinous film-forming agent dissolved in a volatile solvent, or a suspension of calcium hydroxide in a solution of a synthetic resin. The lining seals the dentinal tubules and protects the pulp before a restoration is inserted. (Jablonski, Illustrated Dictionary of Dentistry, 1982) Varnish, Cavity,Cavity Liner, Dental,Cavity Lining Varnish,Cavity Lining Varnishes,Cavity Lining, Dental,Cavity Linings, Dental,Cavity Varnishes,Dental Cavity Liner,Dental Cavity Liners,Dental Cavity Linings,Liners, Dental Cavity,Lining, Dental Cavity,Linings, Dental Cavity,Cavity Liners, Dental,Cavity Varnish,Liner, Dental Cavity,Varnish, Cavity Lining,Varnishes, Cavity,Varnishes, Cavity Lining
D003737 Dental Cavity Preparation An operation in which carious material is removed from teeth and biomechanically correct forms are established in the teeth to receive and retain restorations. A constant requirement is provision for prevention of failure of the restoration through recurrence of decay or inadequate resistance to applied stresses. (Boucher's Clinical Dental Terminology, 4th ed, p239-40) Cavity Preparation, Dental,Cavity Preparations, Dental,Dental Cavity Preparations,Preparation, Dental Cavity,Preparations, Dental Cavity
D003743 Dental Enamel A hard thin translucent layer of calcified substance which envelops and protects the dentin of the crown of the tooth. It is the hardest substance in the body and is almost entirely composed of calcium salts. Under the microscope, it is composed of thin rods (enamel prisms) held together by cementing substance, and surrounded by an enamel sheath. (From Jablonski, Dictionary of Dentistry, 1992, p286) Enamel,Enamel Cuticle,Dental Enamels,Enamel, Dental,Enamels, Dental,Cuticle, Enamel,Cuticles, Enamel,Enamel Cuticles,Enamels
D003763 Dental Leakage The seepage of fluids, debris, and micro-organisms between the walls of a prepared dental cavity and the restoration. Dental Leakages,Leakage, Dental,Leakages, Dental
D003764 Dental Materials Materials used in the production of dental bases, restorations, impressions, prostheses, etc. Dental Material,Material, Dental,Materials, Dental
D003793 Dental Restoration, Permanent A restoration designed to remain in service for not less than 20 to 30 years, usually made of gold casting, cohesive gold, or amalgam. (Jablonski, Dictionary of Dentistry, 1992) Dental Fillings, Permanent,Dental Filling, Permanent,Dental Permanent Filling,Dental Permanent Fillings,Dental Restorations, Permanent,Filling, Dental Permanent,Filling, Permanent Dental,Fillings, Dental Permanent,Fillings, Permanent Dental,Permanent Dental Filling,Permanent Dental Fillings,Permanent Dental Restoration,Permanent Dental Restorations,Permanent Filling, Dental,Permanent Fillings, Dental,Restoration, Permanent Dental,Restorations, Permanent Dental

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