Comparison of the effect of storage media on shear punch strength of resin luting cements. 2010

Rafat Bagheri, and Ayşe Mese, and Michael F Burrow, and Martin J Tyas
School of Dental Science, Shiraz University of Medical Science, Shiraz, Iran. bagherir@unimelb.edu.au

OBJECTIVE To measure the shear punch strength of eight resin-containing luting cements before and after immersion in acidic solution and ethanol at different temperatures (37 degrees C and 60 degrees C). METHODS Specimens were prepared from six resin luting cements; Set (SDI), Panavia F (Kuraray), RelyX Veneer (3M/ESPE), VarioloinkII (Ivoclar), Maxcem (Kerr), Nexus2 (Kerr) and two Resin-modified glass-ionomer luting cements (RM-GICs); GC Fuji Plus (GC Corporation), RelyX Luting 2 (3M/ESPE). For each material a total of 114 disc-shaped specimens were prepared. Six specimens were immersed in distilled water for 24 h at 37 degrees C, polished and subjected to baseline measurement for shear punch strength. The remaining 108 specimens were randomly divided into 18 groups of six, and immersed in three solutions; distilled water, 0.01 mol/L lactic acid, and 50% ethanol at 37 degrees C or 60 degrees C, for 1 week, 1 month or 3 months. Specimens were washed, dried and tested for final shear punch strength. RESULTS Values were material and solution dependent. Values of Nexus 2 and Rely X Veneer are the highest, and Rely X Luting 2 the lowest. Ethanol and lactic acid specimens showed significantly lower values compared with the distilled water specimens. CONCLUSIONS The shear punch strengths of the resin-containing luting cements were affected by time and storage solution. While some of the resin luting cements had significantly higher values compared to that of the RM-GICs, there were no significant differences between the RM-GICs and resin cements such as Panavia F and Set.

UI MeSH Term Description Entries
D007101 Immersion The placing of a body or a part thereof into a liquid. Submersion,Immersions,Submersions
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
D011140 Polyurethanes A group of thermoplastic or thermosetting polymers containing polyisocyanate. They are used as ELASTOMERS, as coatings, as fibers and as foams. Polyisocyanates,Ostamer,Pellethane,Spandex,Ostamers,Pellethanes,Polyisocyanate,Polyurethane,Spandices
D003188 Composite Resins Synthetic resins, containing an inert filler, that are widely used in dentistry. Composite Resin,Resin, Composite,Resins, Composite
D003775 Dental Polishing Creation of a smooth and glossy surface finish on a denture or amalgam. Dental Burnishing,Dental Finishing,Burnishing, Dental,Finishing, Dental,Polishing, Dental
D004356 Drug Storage The process of keeping pharmaceutical products in an appropriate location. Drug Storages,Storage, Drug,Storages, Drug
D005899 Glass Ionomer Cements A polymer obtained by reacting polyacrylic acid with a special anion-leachable glass (alumino-silicate). The resulting cement is more durable and tougher than others in that the materials comprising the polymer backbone do not leach out. Glass Ionomer Cement,Glass Polyalkenoate Cement,Polyalkenoate Cement,Polyalkenoate Cements,Glass Polyalkenoate Cements,Glass-Ionomer Cement,Cement, Glass Ionomer,Cement, Glass Polyalkenoate,Cement, Glass-Ionomer,Cement, Polyalkenoate,Cements, Glass Ionomer,Cements, Glass Polyalkenoate,Cements, Glass-Ionomer,Cements, Polyalkenoate,Glass-Ionomer Cements,Ionomer Cement, Glass,Polyalkenoate Cement, Glass
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000431 Ethanol A clear, colorless liquid rapidly absorbed from the gastrointestinal tract and distributed throughout the body. It has bactericidal activity and is used often as a topical disinfectant. It is widely used as a solvent and preservative in pharmaceutical preparations as well as serving as the primary ingredient in ALCOHOLIC BEVERAGES. Alcohol, Ethyl,Absolute Alcohol,Grain Alcohol,Alcohol, Absolute,Alcohol, Grain,Ethyl Alcohol

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