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:: Volume 3, Issue 4 (11-2025) ::
cofs 2025, 3(4): 0-0 Back to browse issues page
The Effect of At-Home Bleaching on the Increase of Enamel Microcracks
Roshanak Yousefi , Mohammad Reza Malekipour , Mehrdad Kazemian , Mona Fatemeh Rabiei *
Department of Operative Dentistry, Faculty of Dentistry, Isf.c, Islamic Azad University, Isfahan, Iran
Abstract:   (65 Views)
Background: Tooth bleaching materials have the potential to alter both the organic and mineral components of dental tissues, which may in turn affect enamel surface morphology. This study aimed to evaluate the effect of at-home bleaching on the increase of Enamel Microcracks.
Materials and Methods: In this in vitro experimental study, 40 extracted anterior teeth were randomly divided into two groups. Baseline stereomicroscopic images of the buccal surfaces were captured to record the initial number of enamel microcracks. Each tooth was measured at multiple regions before and after bleaching to allow repeated assessments. Group 1 was treated with 15% carbamide peroxide, and Group 2 with 20% carbamide peroxide, for ten consecutive days. Each day, teeth in Group 1 were exposed to the bleaching agent for 6 hours, and teeth in Group 2 for 4 hours. Stereomicroscopic images were taken after treatment, and the number of microcracks was recorded in all regions. Data were analyzed using a repeated-measures ANOVA with α = 0.05.
Results: The mean number of enamel microcracks increased significantly in both groups after bleaching compared to baseline measurements (p < 0.001). No statistically significant difference was observed between the two concentrations in terms of microcrack formation (p = 0.687).
Conclusion: At-home bleaching with both 15% and 20% carbamide peroxide significantly increased the mean number of enamel microcracks. However, the extent of microcrack formation did not differ significantly between the two concentrations.
 
     
Type of Study: Research | Subject: Operative dentistry
Received: 2025/09/29 | Accepted: 2025/10/30 | Published: 2025/11/7
References
1. Elfallah HM, Bertassoni LE, Charadram N, Rathsam C, Swain MV. Effect of tooth bleaching agents on protein content and mechanical properties of dental enamel. Acta Biomater. 2015;20:120-128 [DOI:10.1016/j.actbio.2015.03.035] [PMID]
2. Mondelli RF, Azevedo JF, Francisconi AC, Almeida CM, Ishikiriama SK. Comparative clinical study of the effectiveness of different dental bleaching methods - two year follow-up. J Appl Oral Sci. 2012;20(4):435-443. [DOI:10.1590/S1678-77572012000400008] [PMID] []
3. Attin T, Müller T, Patyk A, Lennon AM. Influence of different bleaching systems on fracture toughness and hardness of enamel. Oper Dent. 2004;29(2):188-195.
4. Banerji S, Mehta SB, Millar BJ. The management of cracked tooth syndrome in dental practice. Br Dent J. 2017;222(9):659-666. [DOI:10.1038/sj.bdj.2017.398] [PMID]
5. Mamoun JS, Napoletano D. Cracked tooth diagnosis and treatment: An alternative paradigm. Eur J Dent. 2015;9(2):293-303. [DOI:10.4103/1305-7456.156840] [PMID] []
6. Gursoy UK, Eren DI, Bektas OO, Hurmuzlu F, Bostanci V, Ozdemir H. Effect of external tooth bleaching on dental plaque accumulation and tooth discoloration. Med Oral Patol Oral Cir Bucal. 2008;13(4):E266-E269.
7. Hegedüs C, Bistey T, Flóra-Nagy E, Keszthelyi G, Jenei A. An atomic force microscopy study on the effect of bleaching agents on enamel surface. J Dent. 1999;27(7):509-515. [DOI:10.1016/S0300-5712(99)00006-8] [PMID]
8. Saati K, Sheikhi S, Esnaashari E, Valizadeh S. The Effects of Three Bleaching Agents on Tooth Discoloration Caused by Mineral Trioxide Aggregate. Iran Endod J. 2019;14(4):253-258.
9. Burrows S. A review of the efficacy of tooth bleaching. Dent Update. 2009;36(9):537-8, 541-4, 547-8 passim [DOI:10.12968/denu.2009.36.9.537] [PMID]
10. Bernardon JK, Vieira Martins M, Branco Rauber G, Monteiro Junior S, Baratieri LN. Clinical evaluation of different desensitizing agents in home-bleaching gels. J Prosthet Dent. 2016;115(6):692-696. [DOI:10.1016/j.prosdent.2015.10.020] [PMID]
11. Martins KV, Zanatta RF, Palhari FTL, D'Arce MBF, Liporoni PCS. Deleterious effects over enamel surface bleached with low and high concentration gels containing calcium - in vitro evaluation. Int J Odontostomat. 2022;16(1):120-124. [DOI:10.4067/S0718-381X2022000100120]
12. Pimenta-Dutra AC, Albuquerque RC, Morgan LS, Pereira GM, Nunes E, Horta MC, et al. Effect of bleaching agents on enamel surface of bovine teeth: A SEM study. J Clin Exp Dent. 2017;9(1):e46-e50.
13. Son JH, An JH, Kim BK, Hwang IN, Park YJ, Song HJ. Effect of laser irradiation on crystalline structure of enamel surface during whitening treatment with hydrogen peroxide. J Dent. 2012;40(11):941-948. [DOI:10.1016/j.jdent.2012.07.015] [PMID]
14. Oshiro M, Kurokawa H, Ando S, Irokawa A, Miyazaki M, Platt JA. The effect of bleaching on the elastic modulus of bovine enamel. Dent Mater J. 2007;26(3):409-413. [DOI:10.4012/dmj.26.409] [PMID]
15. Moosavi H, Darvishzadeh F. The Influence of Post Bleaching Treatments in Stain Absorption and Microhardness. Open Dent J. 2016;10:69-78. [DOI:10.2174/1874210616021000069] [PMID] []
16. Nematianaraki S, Fekrazad R, Naghibi N, Kalhori KA, Junior AB. Effects of the bleaching procedures on enamel micro-hardness: Plasma Arc and diode laser comparison. Laser Ther. 2015;24(3):173-177. [DOI:10.5978/islsm.15-OR-10] [PMID] []
17. Murchison DF, Charlton DG, Moore BK. Carbamide peroxide bleaching: effects on enamel surface hardness and bonding. Oper Dent. 1992;17(5):181-185.
18. Tong LS, Pang MK, Mok NY, King NM, Wei SH. The effects of etching, micro-abrasion, and bleaching on surface enamel. J Dent Res. 1993;72(1):67-71. [DOI:10.1177/00220345930720011001] [PMID]
19. Agarwal R, Vasani N, Mense US, Prasad N, Shetty A, Natarajan S, et al. Effects of online marketplace-sourced over-the-counter tooth whitening products on the colour, microhardness, and surface topography of enamel: an in vitro study. BDJ Open. 2024;10(1):67. [DOI:10.1038/s41405-024-00253-0] [PMID] []
20. Flaitz CM, Hicks MJ. 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. 1996;63(4):249-256.
21. Bitter NC. A scanning electron microscopy study of the effect of bleaching agents on enamel: a preliminary report. J Prosthet Dent. 1992;67(6):852-855. [DOI:10.1016/0022-3913(92)90600-F] [PMID]
22. McGuckin RS, Babin JF, Meyer BJ. Alterations in human enamel surface morphology following vital bleaching. J Prosthet Dent. 1992;68(5):754-760. [DOI:10.1016/0022-3913(92)90197-I] [PMID]
23. Altınışık H, Nezir M. Clinical evaluation of in-office bleaching with low, medium, and high concentrate hydrogen peroxide: a 6-month a double-blinded randomized controlled trial. Clin Oral Investig. 2025;29(5):260. [DOI:10.1007/s00784-025-06348-8] [PMID] []
24. Fioresta R, Melo M, Forner L, Sanz JL. Prognosis in home dental bleaching: a systematic review. Clin Oral Investig. 2023;27(7):3347-3361. [DOI:10.1007/s00784-023-05069-0] [PMID] []
25. Araujo Fde O, Baratieri LN, Araújo E. In situ study of in-office bleaching procedures using light sources on human enamel microhardness. Oper Dent. 2010;35(2):139-146. [DOI:10.2341/08-033-C] [PMID]
26. Alqahtani MQ. Tooth-bleaching procedures and their controversial effects: A literature review. Saudi Dent J. 2014;26(2):33-46. [DOI:10.1016/j.sdentj.2014.02.002] [PMID] []
27. Hilton TJ, Ferracane JL, Broome JC. Summitt's fundamentals of operative dentistry: a contemporary approach. 4th ed. Hanover Park: Quintessence; 2013.
28. Joiner A. The bleaching of teeth: a review of the literature. J Dent. 2006;34(7):412-419. [DOI:10.1016/j.jdent.2006.02.002] [PMID]
29. Llena C, Esteve I, Forner L. Effect of Hydrogen and Carbamide Peroxide in Bleaching, Enamel Morphology, and Mineral Composition: In vitro Study. J Contemp Dent Pract. 2017;18(7):576-582. [DOI:10.5005/jp-journals-10024-2087] [PMID]
30. Cvikl B, Lussi A, Moritz A, Flury S. Enamel Surface Changes After Exposure to Bleaching Gels Containing Carbamide Peroxide or Hydrogen Peroxide. Oper Dent. 2016;41(1):E39-E47. [DOI:10.2341/15-010-L] [PMID]
31. Weitzman SA, Weitberg AB, Stossel TP, Schwartz J, Shklar G. Effects of hydrogen peroxide on oral carcinogenesis in hamsters. J Periodontol. 1986;57(11):685-688. [DOI:10.1902/jop.1986.57.11.685] [PMID]
32. Vano M, Derchi G, Barone A, Genovesi A, Covani U. Tooth bleaching with hydrogen peroxide and nano-hydroxyapatite: a 9-month follow-up randomized clinical trial. Int J Dent Hyg. 2015;13(4):301-307. [DOI:10.1111/idh.12123] [PMID]
33. Wang X, Mihailova B, Klocke A, Fittschen UE, Heidrich S, Hill M, et al. Side effects of a non-peroxide-based home bleaching agent on dental enamel. J Biomed Mater Res A. 2009;88(1):195-204. https://doi.org/10.1002/jbm.a.31843 [DOI:10.1002/jbm.a.30919] [PMID]
34. Dey S, Pandey V, Kumar A, Awasthi N, Sahu A, Pujari SC. In vitro Comparison of Impact of Different Bleaching Agents on the Microhardness of Enamel. J Contemp Dent Pract. 2016;17(3):258-262. [DOI:10.5005/jp-journals-10024-1837] [PMID]
35. Ameli N, Kianvash Rad N, Nikpour F, Ghorbani R, Mohebi S. Effect of Short-and Long-term Use of Home and In-Office Bleaching with Carbamide Peroxide and Hydrogen Peroxide on Enamel Microhardness. J Dent Indones. 2020;27(2):50-55. [DOI:10.14693/jdi.v27i2.1118]
36. Gkavela G, Kakouris V, Pappa E, Rahiotis C. Effect of Bleaching Agents on Healthy Enamel, White Spots, and Carious Lesions: A Systematic Review and Meta-Analysis. Dent J (Basel). 2024;12(5):140.. [DOI:10.3390/dj12050140] [PMID] []
37. Melo M, Fioresta R, Sanz JL, Pecci-Lloret MP, Llena C. Effect of highly concentrated bleaching gels on enamel microhardness and superficial morphology, and the recovery action of four remineralizing agents. BMC Oral Health. 2022;22(1):645. [DOI:10.1186/s12903-022-02693-2] [PMID] []
38. Rix D, Foley TF, Mamandras A. Comparison of bond strength of three adhesives: composite resin, hybrid GIC, and glass-filled GIC. Am J Orthod Dentofacial Orthop. 2001;119(1):36-42. [DOI:10.1067/mod.2001.110519] [PMID]
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Yousefi R, Malekipour M R, Kazemian M, Rabiei M F. The Effect of At-Home Bleaching on the Increase of Enamel Microcracks. cofs 2025; 3 (4)
URL: http://cofs.khuisf.ac.ir/article-1-116-en.html
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Volume 3, Issue 4 (11-2025) Back to browse issues page
Contemporary Orofacial Science Contemporary Orofacial Science
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