SANDBLASTING SURFACE TREATMENT METHOD FOR CHANGE IN SURFACE MORPHOLOGY AND IMPROVEMENT IN RESIDUAL STRESS OF THREE TYPES OF DENTAL ZIRCONIA
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United States of America Patent
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Jul 6, 2023
app pub date -
Nov 29, 2022
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Nov 30, 2021
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Abstract
The present invention relates to a surface treatment method for dental zirconia, including sandblasting the surface of three types of dental zirconia (3Y-TZP, 4Y-PSZ and 5Y-PSZ) with alumina particles, and this method optimizes sandblasting conditions for each type of zirconia and enhances mechanical properties by strengthening residual stress. In addition, a dental article including dental zirconia made by the surface treatment method for zirconia, and suitable protocols for the durable bond between resin cements and high-translucent zirconia are suggested.
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