Clinical evaluation of a new bleaching product "Polanight" in a Japanese population

• Published in: Odontology Vol. 93; no. 1; pp. 52 - 55
• Main Authors: Tsubura, Shuichi, Yamaguchi, Ryuji
• Format: Journal Article
• Language: Japanese; English
• Published: Japan The Society of the Nippon Dental University 01.09.2005; Springer Nature B.V
• Subjects: Adolescent; Adult; Age Factors; Color; Colorimetry - methods; Dentin Sensitivity - chemically induced; Drug Combinations; Female; Gels; Gingivitis - chemically induced; Health & beauty aids; Humans; Japan; Male; Middle Aged; Oxidants - administration & dosage; Oxidants - therapeutic use; Peroxides - administration & dosage; Peroxides - therapeutic use; Self Care; Sex Factors; Teeth; Tooth - pathology; Tooth Bleaching - instrumentation; Tooth Bleaching - methods; Urea - administration & dosage; Urea - analogs & derivatives; Urea - therapeutic use; Japan
• ISSN: 1618-1247; 1618-1255
• 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 (ΔL*), redness-greenness difference (Δa*), and yellownessblueness difference (Δb*) 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 (ΔE*) 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 ΔL* (P < 0.05) and Δb* (P < 0.005), but not in the rednessgreenness (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.