Amalgam substitutes: a critical analysis

Journal of Esthetic Dentistry
F Lutz, I Krejci

Abstract

Quality standards for restorations recently have been defined in Switzerland. Amalgam substitutes must meet restoration Grade 2 requirements (i.e., pulp and dental hard substance must be preserved, and both form and function of the tooth have to be reconstituted). The pertinent operative technique has to be simple and amalgam-like. A minimum service life of 8 years is required. This in vitro study investigated the clinical potential of several amalgam substitutes, taking into account the operative requirements, the defined restorative guidelines, and the required service life. Potential amalgam substitutes evaluated in this study included compomers (Compoglass, Dyract, Dyract AP, Elan, F 2000) and resin-based composites (Alert, Ariston, Definite, Nulite, Solitaire, Surefil). The composites Adaptic and Tetric Cream, using a simplified placement technique, were tested as negative and positive controls, respectively. Marginal adaptation and wear properties were measured in vitro in mixed Class II cavities. Relative radiopacity was measured in terms of millimeters of equivalent aluminum. All compomers showed a radiopacity of 2.5 mm or more aluminum. Only Dyract AP and Elan were more wear resistant than amalgam. After stressing, the...Continue Reading

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Dec 31, 2003·Dental Materials : Official Publication of the Academy of Dental Materials·Kraig S VandewalleRonald L Sakaguchi
Oct 17, 2002·Journal of Dentistry·T N GöhringP R Schmidlin
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May 27, 2020·Dental Materials : Official Publication of the Academy of Dental Materials·Roland FrankenbergerNorbert Krämer

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