Results 181 to 190 of about 8,132 (229)
Some of the next articles are maybe not open access.
Working qualities of glass-ionomer cements
The Journal of Prosthetic Dentistry, 1981G lass-ionomer cements, relatively new and promising materials, are presently advocated for clinical use as Class III and V restorative materials, fissure sealants, and cementing agents for castings.‘-7 The setting mechanism of the glass ionomers has been characterized by Crisp et al.*-lo The physical properties and resistance to solubility appear ...
openaire +3 more sources
Pulpal effects of glass ionomer cements
International Endodontic Journal, 1984Summary. The incidence of pulpal damage beneath cavities filled with ASPA, Chemfil and Chembond was studied in class I cavities in human premolar teeth after 1–10 days, 11–30 days, and 31 or more days. Cavities filled with Kalzinol or zinc oxide/eugenol acted as controls.
Roger M. Browne +4 more
openaire +3 more sources
Glass ionomer cements in orthodontics—An update
American Journal of Orthodontics and Dentofacial Orthopedics, 1988Because conventional bands continue to be used in clinical orthodontics, it is essential to evaluate new dental cements to establish their suitability as a cementing medium for orthodontic bands. This study was undertaken to determine the failure rate of bands cemented with a glass ionomer cement to premolar and molar teeth. The sample consisted of 100
openaire +3 more sources
Depth microhardness of glass ionomer cements
Biomaterials, 1996The purpose of this study was to observe the effect of different conditions of storage on the surface and in the depth of luting glass ionomer cement by measuring microhardness. The hardness of a glass ionomer cement was measured after storage in wet and dry conditions and in an atmosphere of 80% relative humidity, for times up to 1000 h.
Jacques Payan +5 more
openaire +3 more sources
Microleakage of glass ionomer cement composite resin and glass ionomer resin cement.
The Journal of clinical pediatric dentistry, 1998An in vitro dye leakage study was performed to compare the sealing ability of glass ionomer, composite resin and glass ionomer/resin cement when used as restorative materials for G. V. Black class V cavities. In this research, standard Class V cavities were prepared in sound premolar teeth extracted for orthodontic reasons.
Erdilek N., Ozata F., Sepetcioglu F.
openaire +2 more sources
Chemistry of glass-ionomer cements: a review
Biomaterials, 1998Studies of the setting of glass-ionomer cements have been carried out for over twenty years, and there is now a considerable body of information concerning the steps that lead to the conversion of a freshly mixed cement paste into a solid, durable dental restorative. This paper reviews these studies, paying particular attention to more recent work. The
openaire +2 more sources
Glass Ionomer Cements: Chemistry of Erosion
Journal of Dental Research, 1976A three-month study of the chemistry of the water erosion of two forms of ASPA cement has been made. The effect of varying cement consistency and cure time was investigated. The results are discussed in terms of the known chemistry and structure of the cement.
Alan D. Wilson +2 more
openaire +2 more sources
Wear and Microhardness of Glass-Ionomer Cements
Journal of Dental Research, 1987Pin-and-disc wear and Knoop Hardness measurements were made on three commercial glass-ionomer cements having slightly different compositions. The specific objective was to determine whether these cements have potential for use in posterior teeth, and, if not, what modifications in composition and structure would be appropriate to enhance their ...
Joseph M. Antonucci +2 more
openaire +3 more sources
Biological evaluation of glass ionomer cements [PDF]
International Endodontic Journal, 1986 Summary. Sixty human premolar and canine teeth were used in this study. Class V cavities were prepared with a turbine handpiece. The experimental material was ASPA, with silicate cement and zinc oxide‐eugenol cements being used as controls. The teeth were extracted approximately 4 days, 30 days or 90 days after insertion of the filling material.
openaire +2 more sources
Composition and Characteristics of Glass Ionomer Cements
The Journal of the American Dental Association, 1990Glass ionomer cement materials are currently available for restoration, cavity lining and basing, luting, and preventive applications. The in vitro performance is a function of composition, manipulation, and placement. In general, the cements may be characterized as strong, stiff, hard materials that are adhesive to calcified tissue, have low toxicity,
openaire +3 more sources