Three-month evaluation of vital tooth bleaching using light units

• Verfasst von: Polydorou, Olga [VerfasserIn]
• Verfasst von: Wirsching, Mira Stefanie [VerfasserIn]
• Verfasst von: Wokewitz, M [VerfasserIn]
• Verfasst von: Hahn, P [VerfasserIn]
• Titel: Three-month evaluation of vital tooth bleaching using light units
• Titelzusatz: a randomized clinical study
• Verf.angabe: O Polydorou · M Wirsching · M Wokewitz · P Hahn
• E-Jahr: 2013
• Jahr: January 01 2013
• Umfang: 12 S.
• Fussnoten: Gesehen am 06.12.2021
• Titel Quelle: Enthalten in: Operative dentistry
• Ort Quelle: Indianapolis, Ind. : Operative Dentistry, Inc., 1976
• Jahr Quelle: 2013
• Band/Heft Quelle: 38(2013), 1, Seite 21-32
• ISSN Quelle: 1559-2863
• DOI: doi:10.2341/12-041-C
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1780378335

Abstract

The aim of this study was to evaluate the color stability of vital bleaching using a halogen unit, laser, or only chemical activation up to three months after treatment. A total of 60 patients were divided into three groups, and their teeth were bleached with 38% hydrogen peroxide using three methods: acceleration of the bleaching process with halogen (eight minutes), laser (30 seconds), or chemical activation only. All teeth were bleached a maximum of four times (4 × 15 minutes) until a change of six shade tabs took place. The color was evaluated both visually and with a spectrophotometer before bleaching, immediately after bleaching, and one and three months after bleaching. Directly after bleaching, the use of halogen showed better results than laser (p≤0.05). One and three months after bleaching, no significant difference was found between the tested methods relative to the shade change, independent of the method of shade evaluation (p>0.05). As far as the color stability is concerned, bleaching with halogen resulted in stable color throughout the three months (p>0.05), whereas the other two methods resulted in whiter teeth after one and three months compared with the color directly after bleaching (p≤0.05). Bleaching with laser needed more time than halogen for the desired shade change (p≤0.05). Although directly after treatment bleaching with halogen resulted in better results, one and three months after bleaching the kind of acceleration used in the bleaching process did not have any effect on the esthetic results.