Evaluation of the Effect of Different Laser Activated Bleaching Methods on Enamel Susceptibility to Caries; An In Vitro Model
Journal of Lasers in Medical Sciences,
Vol. 8 No. 3 (2017),
30 August 2017
,
Page S62-S67
Abstract
Introduction: Today bleaching is a routine noninvasive alternative for treatment of discolored teeth. The concern has been raised whether or not oxidizing reaction during this process, might endanger integrity of the teeth and raise the risk of caries formation. The aim of this study was to determine whether conventional or laser activated bleaching predispose teeth to develop caries or not.
Methods:
Sixty human molars were mounted on acrylic cylinders and Knoop microhardness (KHN) and DIAGNOdent (DD) values of them were recorded. They were divided into four experimental groups; G1)conventional bleaching with 40% Hydrogen peroxide gel G2) Diode laser assisted bleaching with same gel. G3)Nd;YAG laser assisted bleaching with the same gel. G4)control group. After bleaching, all samples were subjected to a three day pH cycling regimen and then, KHN and DD values were measured.
Results:
All groups had significant reduction in KHN values. . It seems that there is no statistically meaningful difference between changes in enamel microhardness of sample groups and all groups have changed in a similar amount. Reduction of DD scores were significant in Diode laser and conventional groups, however changes in Nd:YAG laser and control groups were not significant. Changes in DD values have followed a similar pattern among groups, except in G1-G4 and G2-G4 couples. Conventional and Diode laser group had a meaningful difference in reduction of DD values in comparison with control group.
Conclusion:
It can be concluded that bleaching whether conventional or laser activated method, does not make teeth vulnerable to develop carious lesions.
- Bleaching
- Diode laser
- Nd
- YAG laser
- Microhardness
- DIAGNOdent
How to Cite
References
Anaraki SN, Shahabi S, Chiniforush N, Nokhbatolfoghahaei H, Assadian H, Yousefi B. Evaluation of the effects of conventional versus laser bleaching techniques on enamel microroughness. Lasers Med Sci. 2015;30(3):1013-8. doi: 10.1007/s10103-014-1523-6.
Mirzaie M, Yassini E, Ganji S, Moradi Z, Chiniforush N. A comparative study of enamel surface roughness after bleaching with diode laser and Nd: YAG laser. J Lasers Med Sci. 2016;7(3):197-200. doi: 10.15171/jlms.2016.34. Epub 2016 Jul 18.
Kiomarsi N, Salim S, Sarraf P, Javad-Kharazifard M, Chiniforush N. Evaluation of the Diode laser (810nm,980nm) on dentin tubule diameter following internal bleaching. J Clin Exp Dent. 2016 Jul 1;8(3):e241-5. doi: 10.4317/jced.52666.
Dahl J, Pallesen U. Tooth bleaching—a critical review of the biological aspects. Crit Rev Oral Biol Med. 2003;14(4):292-304.
Barghi N. Making a clinical decision for vital tooth bleaching: at-home or in-office? Compend Contin Educ Dent. 1998;19(8):831-8; quiz 40.
Torres CRG, Wiegand A, Sener B, Attin T. Influence of chemical activation of a 35% hydrogen peroxide bleaching gel on its penetration and efficacy—In vitro study. J Dent. 2010;38(10):838-46.
Haywood VB. Number of in-office light-activated bleaching treatments needed to achieve patient satisfaction. Quintessence Int. 2006;37:115-20.
Marson F, Sensi L, Vieira L, Araújo E. Clinical evaluation of in-office dental bleaching treatments with and without the use of light-activation sources. Oper Dent. 2008;33(1):15-22.
Tezel H, Atalayin C, Erturk O, Karasulu E. Susceptibility of enamel treated with bleaching agents to mineral loss after cariogenic challenge. Int J Dent. 2011;2011.
Dostalova T, Jelinkova H, Housova D, Sulc J, Nemec M, Miyagi M, et al. Diode laser-activated bleaching. Braz Dent J. 2004;15:SI-3.
Goharkhay K, Schoop U, Wernisch J, Hartl S, De Moor R, Moritz A. Frequency doubled neodymium: yttrium–aluminum–garnet and diode laser-activated power bleaching—pH, environmental scanning electron microscopy, and colorimetric in vitro evaluations. Lasers Med Sci. 2009;24(3):339-46.
Oliveira Rd, Paes Leme AF, Giannini M. Effect of a carbamide peroxide bleaching gel containing calcium or fluoride on human enamel surface microhardness. Braz Dent J. 2005;16(2):103-6.
Faraoni-Romano JJ, Turssi CP, Serra MC. Concentration-dependent effect of bleaching agents on microhardness and roughness of enamel and dentin. Am J Dent. 2007;20(1):31-4.
Flaitz C, Hicks M. Effects of carbamide peroxide whitening agents on enamel surfaces and caries-like lesion formation: an SEM and polarized light microscopic in vitro study. ASDC J Dent Child. 1995;63(4):249-56.
Oltu Ü, Gürgan S. Effects of three concentrations of carbamide peroxide on the structure of enamel. J Oral Rehabil. 2000;27(4):332-40.
Potočnik I, Kosec L, Gašperšič D. Effect of 10% carbamide peroxide bleaching gel on enamel microhardness, microstructure, and mineral content. J Endod. 2000;26(4):203-6.
Basting R, Rodrigues JA, Serra M. The effect of 10% carbamide peroxide bleaching material on microhardness of sound and demineralized enamel and dentin in situ. Oper Dent. 2000;26(6):531-9.
Pretty I, Edgar W, Higham S. The effect of bleaching on enamel susceptibility to acid erosion and demineralisation. B Dent J. 2005;198(5):285-90.
Al-Qunaian T. The effect of whitening agents on caries susceptibility of human enamel. Oper Dent. 2005;30(2):265-70.
De Menezes M, Turssi CP, Faraoni-Romano JJ, Serra MC. Susceptibility of bleached enamel and root dentin to artificially formed caries-like lesions. Am J Dent. 2007;20(3):173-6.
Lussi A. Validity of diagnostic and treatment decisions of fissure caries. Caries Res. 1991;25(4):296-303.
Liu J-f, Liu Y, Stephen HC-Y. Optimal Er: YAG laser energy for preventing enamel demineralization. J Dent. 2006;34(1):62-6.
Spalding M, TAVEIRA LADA, ASSIS GF. Scanning electron microscopy study of dental enamel surface exposed to 35% hydrogen peroxide: alone, with saliva, and with 10% carbamide peroxide. J Esthet Restor Dent. 2003;15(3):154-65.
Lopes GC, Bonissoni L, Baratieri LN, Vieira LCC, MONTEIRO S. Effect of bleaching agents on the hardness and morphology of enamel. J Esthet Restor Dent. 2002;14(1):24-30.
Rotstein I, Dankner E, Goldman A, Heling I, Stabholz A, Zalkind M. Histochemical analysis of dental hard tissues following bleaching. J Endod. 1996;22(1):23-6.
Bistey T, Nagy IP, Simó A, Hegedűs C. In vitro FT-IR study of the effects of hydrogen peroxide on superficial tooth enamel. J Dent. 2007;35(4):325-30.
Zhang C, Wang X, Kinoshita J-I, Zhao B, Toko T, Kimura Y, et al. Effects of KTP laser irradiation, diode laser, and LED on tooth bleaching: a comparative study. Photomed Laser Surg. 2007;25(2):91-5.
de Magalhães MT, Basting RT, de Almeida ER, Pelino JEP. Diode laser effect on enamel microhardness after dental bleaching associated with fluoride. Photomed Laser Surg. 2009;27(6):937-41.
Ryge G, Foley DE, Fairhurst CW. Micro-indentation hardness. J Dent Res. 1961;40(6):1116-26.
BURGMAIER GM, Schulze I, Attin T. Fluoride uptake and development of artificial erosions in bleached and fluoridated enamel in vitro. J Oral Rehabil. 2002;29(9):799-804.
Kraigher A, Van der Veen M, Potočnik I. Caries occurrence in rats after bleaching with 10% carbamide peroxide in vivo. Caries Res. 2005;40(1):77-80.
Pinto CF, Oliveira Rd, Cavalli V, Giannini M. Peroxide bleaching agent effects on enamel surface microhardness, roughness and morphology. Braz Oral Res. 2004;18(4):306-11.
Perdigao J, Francci C, Swift Jr E, Ambrose W, Lopes M. Ultra-morphological study of the interaction of dental adhesives with carbamide peroxide-bleached enamel. Am J Dent. 1998;11(6):291-301.
TÜRKÜN M, Sevgican F, Pehlivan Y, Aktener BO. Effects of 10% carbamide peroxide on the enamel surface morphology: a scanning electron microscopy study. J Esthet Restor Dent. 2002;14(4):238-44.
Pinto CF, Leme AFP, Cavalli V, Giannini M. Effect of 10% carbamide peroxide bleaching on sound and artificial enamel carious lesions. Braz Dent J. 2009;20(1):48-53.
Falconer D, Hamilton J, Gregory W, Stoffers K. Tooth Bleaching and Its Effect on Diagnosing P&F Caries. ADEA/AADR/CADR Meeting & Exhibition; Orlando, March 2006.
Hitij T, Fidler A. Effect of dental material fluorescence on DIAGNOdent readings. Acta Odontol. 2008;66(1):13-7.
Rashidian A, Shahbazi Moghaddam M, Nadarvand S, Afsharian Zadeh M. Evaluation of the Effect of Aging, Staining and Bleaching on Diagnodent Findings in Composite Fillings (In Vitro). Res Dent Sci. 2013;9(4):206-12.
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