Dental restoratives

Technology Assessment Conference Statement on Effects and Side Effects of Dental Restorative Materials, National Institute of Dental Research, NIH, Bethesda, Md., Aug. 26-29,1991. 

Pattern Waxes. The pattern waxes, ie, inlay casting, base-plate, and sheet and shape waxes, are used to constmct the prototype or pattern from which a finished dental restoration is produced. 

Processing Waxes. The extensive amount of handwork and craftsmanship necessary in the fabrication of most dental restorations and apphances has created a need for several types of wax compositions. These are known as boxing, sticky, utihty, or study waxes. 

GoldJilloys, Cast Types. Four types of gold alloys have been recognized for cast dental restorations (Table 5). They provide desired material for specific uses. The appropriate specifications for these alloys is ANSI/ADA specification no. 5. 

To achieve such compatibility the primary requisite is that the restorative adheres to tooth material. This concept of adhesion is hardly to be foimd in the literature of the 1920s and 1930s. For that reason we find no attempt at developing tooth adhesives in that period. Adhesion was, apparently, only recognized as a desirable property in the 1950s. It seems for some reason to be associated with the introduction of simple resins as dental restorative materials. Although they were not a great success, attempts were made to bond them to tooth material. 

Bergenholtz, G., Cox, C. F., Loesche, W. J. Syed, S. A. (1982). Bacterial leakage around dental restorations its effect on dental pulp. Journal of Oral Pathology, 11, 439-50. 

Goldman, M. (1985). Fracture properties of composite and glass ionomer dental restorative materials. Journal of Biomedical Materials Research, 19, 771-83. 

Tobias, R. S., Browne, R. M. Wilson, C. A. (1985). Antibacterial activity of dental restorative materials. International Dental Research, 18, 161-71. 

Going, R. E., Massler, M. Dute, H. L. (1960). Marginal penetration of dental restorations as studied by crystal violet dye and Journal of the American Dental Association, 61, 285-300. 

Hannah, C. M. Smith, D. C. (1971). Tensile strengths of selected dental restorative materials. Journal of Prosthetic Dentistry, 26, 314-23. 

McComb, D. (1982). Tissue reactions to silicate, silicophosphate, glass ionomer cements and restorative materials. In Smith, D. C. Williams, D. F. (eds.) Biocompatibility of Dental Materials. Volume III. Biocompatibility of Dental Restorative Materials, Chapter 4. Boca Raton CRC Press Inc. 

Matsui, A., Buonocore, M. G., Sayegh, F. Yamaki, M. (1967). Reactions to implants of conventional and new dental restorative materials. Journal of Dentistry for Children, 34, 316-22. 

Mjor, I. A. (1977). Histological demonstration of bacteria subjacent to dental restorations. Scandinavian Journal of Dental Research, 85, 169-74. 

Updegraff, D. M., Change, R. W. H. Joos, R. W. (1971). Antibacterial activity of dental restorative materials. Journal of Dental Research, 50, 382-7. 

Ansetk, K. S., Newman, S. AL and Bowman, C. N.i Polymeric Dental Composites Properties and Reaction Behavior of Multimethacrylate Dental Restorations. VoL 122, pp. 177-218. 

Dental Materials. One very practical application of photopolymer materials is in dental restoratives. Photopolymer chemistry has been adapted for use in composite fillings (67), surface coatings (68) and in the formation of impressions (69). 

It was found, when an attempt was made to conduct ship trials that the paint applier would be required to wear long sleeves, gloves, safety glasses, and a protective face shield. It is also a requirement that an eyewash fountain be nearby. These requirements were imposed because acrylates are skin, eye and respiratory tract irritants, but the problem lies mostly with the acrylated reactive diluent rather than with the acrylated resin (2,3). To avoid these problems, tests have been performed with use of trimethylolpropane trimethacrylate (TMPTMA) as a replacement for TMPTA. TMPTMA has been shown to be much less of an irritant than TMPTA, and is used in dental restorations. 

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