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Study the hardness and temperature changes during tooth bleaching using different Laser Sources | ||
| Journal of baghdad college of dentistry | ||
| Article 1, Volume 22, Issue 4, 2010, Pages 41-46 | ||
| Authors | ||
| ZainabM. Abdul-Ameer; Abdulla K. Abass; Sinan M. Abdul-Satar | ||
| Abstract | ||
| ABSTRACTBackground: Today, the processes of teeth bleaching by utilizing oxidation chemical components became a publicand important as a cosmetically operative. Particularly the demanding on these processes increased with thedeveloping in bleaching techniques, where laser light is used as catalyzer agent to increasing the efficiency andspeed of these processes, and the latter known as office bleaching. In this paper, we evaluate the effect of differentlaser wavelengths of bleaching on the surface hardness of the tooth and the temperature rise of the pulp due to theinfluence of laser light in conjunction with the bleaching gel.Materials and methods: Three different laser sources (KTP 532nm, LD 810nm and Nd:YAG 1064nm) were used asaccelerator agent in-office bleaching utilizing Hydrogen Peroxide at 37.5%, where the enamel micro hardnessmeasurements in the teeth (invitro study) pre and post operative was done.Results: Then by using analysis of variance (ANOVA-Tukey’s test r = 0.05 ) the results shows there are insignificanteffects on tooth hardness due to the changes in the laser wavelengths in both pre and post bleaching.Conclusion: Thereafter to evaluate the pulp chamber temperature rise induced by three different light sourcesemployed in this laser-activated tooth bleaching, the pulp chamber temperature was measured during the radiationprocesses and the results shows that the minimum temperature rise was seen at the 532nm. So, we can say that theKTP (SHG) Nd:YAG laser at the wavelength (532 nm) represent the best choice to use in-office bleaching processes.Keywords: Hardness, Tooth Bleaching, (SHG) Nd:YAG laser, (J Bagh Coll Dentistry 2010;22(4):41-46). | ||
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