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. 2016 Summer;7(3):197-200.
doi: 10.15171/jlms.2016.34. Epub 2016 Jul 18.

A Comparative Study of Enamel Surface Roughness After Bleaching With Diode Laser and Nd: YAG Laser

Mansoreh Mirzaie  1 , Esmaiel Yassini  1 , Saber Ganji  2 , Zohreh Moradi  1 , Nasim Chiniforush  3
Affiliations

A Comparative Study of Enamel Surface Roughness After Bleaching With Diode Laser and Nd: YAG Laser

Mansoreh Mirzaie et al. J Lasers Med Sci. 2016 Summer.

Abstract

Introduction: Bleaching process can affect surface roughness of enamel, which is a vital factor in esthetic and resistance of tooth. The aim of this study was to compare surface roughness of enamel in teeth bleached using Diode and Neodymium-Doped Yttrium Aluminium Garnet (Nd: YAG) lasers with those bleached using conventional method. Methods: In this study, 75 anterior human teeth from upper and lower jaws (These teeth extracted because of periodontal disease) were randomly divided into 5 groups. Group 1: Laser white gel (Biolase, USA) with 45% hydrogen peroxide concentration and GaAlAs Diode laser (CHEESETM, GIGAA, China), group 2: Heydent gel (JW, Germany) with 30% Hydrogen peroxide concentration and Diode laser, group 3: Laser white gel and Nd:YAG laser (FIDELISTM, Fotona, Slovenia), group 4: Heydent gel and Nd:YAG laser and group 5: The Iranian gel Kimia (Iran) with 35% hydrogen peroxide concentration were used. Surface roughness of the samples was measured using the Surface Roughness Tester system (TR 200 Time Group, Germany) before and after bleaching. In each group, one sample was randomly selected for SEM analysis. Results: The results showed that the mean surface roughness of the teeth before and after bleaching had a significant difference in all the study groups. It was indicated that after bleaching, the mean surface roughness had increased in all the study groups. The highest surface roughness was seen in the conventional bleaching group and the lowest surface roughness was reported in group 3 (laser white gel + diode laser), in which the average surface roughness increased by only 0.1 μm. Conclusion: It was concluded that using the Laser white gel and the diode laser for bleaching resulted in the least surface roughness compared to conventional method.

Keywords: bleaching; hydrogen peroxide; laser; micro roughness.

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References

    1. Leonard RH, Haywood VB, Eagle JC. et al. Nightguard vital bleaching of tetracycline-stained teeth: 54 months post treatment. J Esthet Dent. 1999;11:265–277. doi: 10.1111/j.1708-8240.1999.tb00408.x. - DOI - PubMed
    1. Ahamed S, Thayyil S, Sathyanarayana SS, Kulandaivelu A, Satheesh Kumar KS, Deepa VK. The effect of power bleaching on enamel microhardness activated by three different light sources: an in vitro study. J Dent Lasers. 2013;7:48–53. doi: 10.4103/0976-2868.124262. - DOI
    1. Goldstein RE, Garber DA. Complete Dental Bleaching. Chicago: Quintessence Books; 1995. 3.
    1. Fasanaro TS. Bleaching teeth: History, chemicals, and methods used for common tooth discolorations. J Esthet Dent. 1992;4:71–78. doi: 10.1111/j.1708-8240.1992.tb00666.x. - DOI - PubMed
    1. Marcondes M, Paranhos MP, Spohr AM. et al. The influence of the Nd:YAG laser bleaching on physical and mechanical properties of the dental enamel. J Biomed Mater Res B Appl Biomater. 2009;90(1):388–395. doi: 10.1002/jbm.b.31297. - DOI - PubMed

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