“... in the degree of perceived whitening. The aim of this study is to assess the effects of potassium nitrate...”
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“...碩士 === 國立成功大學 === 口腔醫學研究所 === 94 === Tooth whitening is a widely used procedure to improve...”
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“... agents is a popular method to whiten discolored teeth. Carbamide peroxide (CP) is an oxidizing agent...”
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