Tsubura Shuichi, Yamaguchi Ryuji
Department of Biochemistry, The Nippon Dental University School of Dentistry at Niigata, 1-8 Hamaura-cho, Niigata 951-8580, Japan.
Odontology. 2005 Sep;93(1):52-5. doi: 10.1007/s10266-005-0047-8.
Home bleaching techniques have been applied as a safe and effective bleaching procedure. Many manufacturers are now marketing home tooth-bleaching products. The purpose of this study was to compare a new bleaching product, Polanight (PN) with a widely used home bleaching product, Opalescence (OP). Fifty-eight healthy Japanese volunteers of both sexes (18 to 47 years of age) were selected. Using a simultaneous split-mouth protocol, custom-made trays with PN and OP were applied to the maxillary right anterior teeth and left anterior teeth, respectively. The shades of the maxillary canine teeth were measured with a portable chromameter (Shade Eye Ex) at the first examination and at 4 weeks (after 2-week bleaching and 2-week rest). Tooth shade changes were analyzed using the Commission Internationale d'Eclairage (CIE) Lab units. Means of whiteness-blackness difference (DeltaL*), redness-greenness difference (Deltaa*), and yellowness-blueness difference (Deltab*) were 4.00, -1.28 and -7.53 for PN, and 2.54, -0.99, and -5.56 for OP, respectively. Means of color difference (DeltaE*) were 9.23 and 7.78 for PN and OP, respectively. Treatment with either agent demonstrated significant bleaching effects produced by the treatment. The new product, PN, showed significant differences in DeltaL* (P < 0.05) and Deltab* (P < 0.005), but not in the redness-greenness (a*) value when compared with OP. Bleaching with PN was considered more effective than that with OP in the young patient group and in the women.
家庭漂白技术已被应用为一种安全有效的漂白方法。现在许多制造商都在销售家用牙齿美白产品。本研究的目的是比较一种新型漂白产品——Polanight（PN）与一种广泛使用的家用漂白产品——Opalescence（OP）。选取了58名年龄在18至47岁之间的健康日本志愿者（男女均有）。采用同步双盲对照试验方案，分别将装有PN和OP的定制托盘应用于上颌右侧前牙和左侧前牙。在第一次检查时以及4周后（经过2周漂白和2周休息），使用便携式色差仪（Shade Eye Ex）测量上颌尖牙的色度。使用国际照明委员会（CIE）Lab色空间单位分析牙齿色度变化。PN的白度-黑度差值（DeltaL*）、红度-绿度差值（Deltaa*）和黄度-蓝度差值（Deltab*）的平均值分别为4.00、-1.28和-7.53，OP的相应平均值分别为2.54、-0.99和-5.56。PN和OP的色差（DeltaE*）平均值分别为9.23和7.78。两种药剂治疗均显示出显著的漂白效果。与OP相比，新产品PN在DeltaL*（P < 0.05）和Deltab*（P < 0.005）方面存在显著差异，但在红度-绿度（a*）值方面无显著差异。在年轻患者组和女性中，PN漂白被认为比OP更有效。
