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Relevance of in-vitro tests of adhesive and composite dental materials. A review in 3 parts. Part 2: non-standardized tests of composite materials



Relevance of in-vitro tests of adhesive and composite dental materials. A review in 3 parts. Part 2: non-standardized tests of composite materials



Schweizer Monatsschrift für Zahnmedizin 121(10): 916-930



Summary The first part of this review examined ISO approval requirements and in vitro testing. In the second part, non-standardized test methods for composite materials are presented and discussed. Physical tests are primarily described. Analyses of surface gloss and alterations, as well as aging simulations of dental materials are presented. Again, the importance of laboratory tests in determining clinical outcomes is evaluated. Differences in the measurement protocols of the various testing institutes and how these differences can influence the results are also discussed. Because there is no standardization of test protocols, the values determined by different institutes cannot be directly compared. However, the ranking of the tested materials should be the same if a valid protocol is applied by different institutes. The modulus of elasticity, the expansion after water sorption, and the polishability of the material are all clinically relevant, whereas factors measured by other test protocols may have no clinical correlation. The handling properties of the materials are highly dependent on operators' preferences. Therefore, no standard values can be given.

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Accession: 055476538

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PMID: 22025204



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