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The comparison between bleaching gels of FGM & BOOST along with laser on superficial micro hardness: In vitro study
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Keyvan Saati   , Mahdiyeh Karimi * , Nasim Chiniforush , Nasrin Akhoundi |
| , karimi.mahd@yahoo.com |
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Abstract: (7919 Views) |
Background and Aim: Nowadays, usage of laser in vital tooth bleaching is increasing in order to faster achievement to final results. This study aims to compare the effect of FGM و Opalescence® bleaching gels on enamel micro hardness using diode laser 810nm (1.5W).
Material and Methods: In this experimental study, twenty human premolars were then randomly assigned to two bleaching groups. Group one: Opalescence® Boos (HP 40%) using diode laser 810 nm, Group two: FGM (HP 35%) using diode laser 810 nm. The gel received three repetitive activation cycles (each cycle: 30 seconds laser switched on followed by 1 minute rest interval). Vickers micro hardness (VH) was evaluated at baseline and after the bleaching process. Variation of micro hardness in two groups was evaluated with Man-U-Whitney test.
Result: The variation of micro hardness of FGM and Boost group were -32±26 and 3±31 respectively.(p<0.04) Both gels were induced reduction in enamel micro hardness and the difference was significant between two groups. (p=0.01).
Conclusion: Laser bleaching with Diode 810 nm using FGM gel can cause more significant decrease in enamel micro hardness compared to bleaching technique with Opalescence® Boost and Diode 810 nm.
Key words: enamel, hardness test, tooth bleaching, diode lasers
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| Keywords: enamel, hardness test, tooth bleaching, diode lasers |
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Full-Text [PDF 220 kb]
(2112 Downloads)
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Type of Study: original article |
Subject:
restorative dentistry
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