IN VITRO EVALUATION OF ENAMEL MICROHARDNESS FOLLOWING AT-HOME BLEACHING AND LASER-ASSISTED IN OFFICE BLEACHING

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AHRARI FARZANEH; AKBARI MAJID; HAMZEI HANIYE

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Journal: Journal of Mashhad Dental School Year:2017 | Volume:41 | Issue:1 Page(s): 1-10

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Title

IN VITRO EVALUATION OF ENAMEL MICROHARDNESS FOLLOWING AT-HOME BLEACHING AND LASER-ASSISTED IN OFFICE BLEACHING

Author(s)

AHRARI FARZANEH | AKBARI MAJID | HAMZEI HANIYE | Issue Writer Certificate

Keywords

TOOTH BLEACHINGQ2

LASERQ2

MICROHARDNESSQ1

AT-HOME BLEACHINGQ1

IN-OFFICE BLEACHINGQ1

Abstract

Introduction: Researchers have reported conflicting results in terms of the effects of TOOTH BLEACHING on mechanical properties of enamel. This study aimed to evaluate the effect of AT-HOME BLEACHING and LASER-assisted IN-OFFICE BLEACHING on MICROHARDNESS of enamel.Materials and Methods: In this experimental study, 18 healthy bovine incisors were selected and divided into two groups. Home-bleaching with 15% carbamide peroxide was applied for the first group for eight hours a day over 15 days. On the other hand, IN-OFFICE BLEACHING was performed on the samples of the second group using 40% hydrogen peroxide and a GaAlAs diode LASER (wavelength 810 nm), applied to accelerate TOOTH BLEACHING at settings of 2 W as a continuous wave in non-contact mode. This process was performed for three sessions over 15 days. Specimens were stored in Fusayama Meyer artificial saliva during the study. Vickers hardness test was performed to assess the MICROHARDNESS of the specimens before and after bleaching in both groups. Data analysis was performed using paired and independent t -tests, and P-value of less than 0.05 was considered statistically significant.Results: While hardness of enamel decreased after both AT-HOME BLEACHING and LASER-assisted IN-OFFICE BLEACHING, this reduction was not significant (P>0.05). No significant difference was observed between the study groups in terms of enamel hardness before and after the bleaching procedures (P>0.05).Conclusion: According to the results of this study, none of the bleaching methods had a significant impact on mineral properties of intact enamel. Therefore, both procedures could be recommended as conservative methods for treatment of discolored teeth.

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APA: Copy

AHRARI, FARZANEH, AKBARI, MAJID, & HAMZEI, HANIYE. (2017). IN VITRO EVALUATION OF ENAMEL MICROHARDNESS FOLLOWING AT-HOME BLEACHING AND LASER-ASSISTED IN OFFICE BLEACHING. JOURNAL OF MASHHAD DENTAL SCHOOL, 41(1), 1-10. SID. https://sid.ir/paper/74228/en

Vancouver: Copy

AHRARI FARZANEH, AKBARI MAJID, HAMZEI HANIYE. IN VITRO EVALUATION OF ENAMEL MICROHARDNESS FOLLOWING AT-HOME BLEACHING AND LASER-ASSISTED IN OFFICE BLEACHING. JOURNAL OF MASHHAD DENTAL SCHOOL[Internet]. 2017;41(1):1-10. Available from: https://sid.ir/paper/74228/en

IEEE: Copy

FARZANEH AHRARI, MAJID AKBARI, and HANIYE HAMZEI, “IN VITRO EVALUATION OF ENAMEL MICROHARDNESS FOLLOWING AT-HOME BLEACHING AND LASER-ASSISTED IN OFFICE BLEACHING,” JOURNAL OF MASHHAD DENTAL SCHOOL, vol. 41, no. 1, pp. 1–10, 2017, [Online]. Available: https://sid.ir/paper/74228/en

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