To evaluate the effectiveness (versus a placebo or another active product) and side effects of over-the-counter or dentist-dispensed chemically-based tooth whitening products designed for home use.
评估市售或由牙医师提供含化学成份之牙齿美白产品的效用(与安慰剂或其他有效的产品相比较)以及副作用。
To evaluate the effectiveness (versus a placebo or another active product) and side effects of over-the-counter or dentist-dispensed chemically-based tooth whitening products designed for home use.
评估市售或由牙医师提供含化学成份之牙齿美白产品的效用(与安慰剂或其他有效的产品相比较)以及副作用。
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