论文部分内容阅读
目的评价PearlWhite专业美白牙膏延长冷光美白的临床效果。方法选择2010年9月至2011年2月首都医科大学附属北京口腔医院门诊就诊的外源性染色牙患者40例,随机分为2组,各20例。试验组:Beyond冷光美白后使用PearlWhite专业美白牙膏;对照组:Beyond冷光美白后使用普通牙膏。分别于治疗后即时(基线)及治疗后3、6个月由同一名医生采用比色仪对左上中切牙进行比色,记录色彩学参数L*、a*、b*,并计算治疗后3、6个月色彩学参数与基线的差值。结果治疗后3个月时试验组和对照组牙面的总体美白效果与基线相比轻度减弱,但两组间ΔE值差异无统计学意义(P>0.05);6个月时试验组牙面美白效果保持较好,而对照组变化较为明显,与对照组相比,试验组牙颈部ΔE、Δb*值差异有统计学意义(P<0.01)。结论与普通牙膏相比,使用PearlWhite专业美白牙膏可以有效延长冷光美白的效果。
Objective To evaluate the clinical efficacy of Pearl Whit Whitening toothpaste to prolong cold whitening. Methods From September 2010 to February 2011, 40 patients with extrinsic stained teeth from Beijing Stomatological Hospital Affiliated to Capital Medical University were randomly divided into 2 groups with 20 in each. The experimental group: Beyond cold white after whitening PearlWhite professional whitening toothpaste; control group: Beyond cold whitening ordinary toothpaste. The left upper central incisor was colorimetrically measured by the same doctor immediately after treatment (baseline) and 3 and 6 months after treatment, and the colorimetric parameters L *, a * and b * were recorded. After treatment 3,6 months difference between colorimetric parameters and baseline. Results At 3 months after treatment, the overall whitening effect of the tooth surface of the experimental group and the control group was slightly weaker than that of the baseline, but there was no significant difference in ΔE between the two groups (P> 0.05). At 6 months, The facial whitening effect remained good, while the changes in the control group were more obvious. Compared with the control group, there was significant difference in the values of ΔE and Δb * in the experimental group (P <0.01). Conclusion Compared with ordinary toothpaste, using PearlWhite professional whitening toothpaste can effectively extend the effect of cold light whitening.