Effect of 15% Carbamide Peroxide Agents with and without Potassium Nitrate and Fluoride(PF) on the Tooth Color and Surface Microhardness of Human Enamel

15% 치아미백제의 potassium nitrate와 fluoride(PF) 함유 여부에 따른 치아색조와 미세경도 변화

  • 우희선 (경운대학교 치위생학과) ;
  • 심연수 (청주대학교 치위생학과)
  • Received : 2011.11.10
  • Accepted : 2011.12.26
  • Published : 2012.01.28


The purpose of this study was to evaluate tooth color and microhardness after 15% carbamide peroxide(CP) bleaching treatments with/without potassium nitrate and fluoride(PF), which were used home bleaching. Thirty tooth specimens were obtained from thirty premolar and were randomly divided into three groups: 1, untreated controls(Distilled water): 2, treatment with 15% CP bleaching agent; 3, treatment with 15% CP bleaching agent (contained 3% potassium nitrate and 0.11% fluoride). All groups were treated 6h per day for 14 days then immersed in distilled water. Changes in enamel color were evaluated on Baseline and Day 14. Microhardness were evaluated on Baseline, Days 7 and 14. All the bleached enamel specimens revealed increased whiteness without control group. Groups 2 and 3 showed significantly decreased enamel microhardness compared to control group. On Day 7, Groups 2-3 showed significantly decreased enamel microhardness compared to control group and respective baseline data. The percentage microhardness loss(PML) look at Day 7 and 14 for Group 1, respectively, there was little difference between 1.7 and 0.8. However, Group 2 was 21.9 and 3.5, Group 3 was 16.7 and 1.4 as a baseline and Day 7 were significantly different (p<0.05). The PML of group 2 was significantly highest than that of group 3 on Day 7. As a result, the data indicate that the addition of PF did not influence the whitening efficacy of the bleaching agent negatively. PF-containing bleaching agent reduce the percentage microhardness loss. PF-containing tooth bleaching your teeth with a whitening effect can be reduced by decreasing the hardness of enamel.


Tooth Bleaching;Carbamide Peroxide;Tooth Color;Microhardness


  1. VMT. Zaragoza, "Bleaching of vital teeth : technique," EstoModeo, Vol.9, pp.7-30, 1984.
  2. M. Goldberg, A. Claisse-Crinquette, and Bourd- Boittin, "Tooth bleaching treatment," Ass. Dent. Francaise, Paris, pp.10-46, 2005.
  3. V. B. Haywood and H. O. Heymann, "Nightguard vital bleaching," Quintessence Int, Vol.20, pp.173-176, 1989.
  4. R. Goldstein and D. Garber, "Complete dental bleaching," Quintessence Int, pp.20-76, 1995.
  5. H. O. Heymann, "Bleaching of vital teeth," Quintessence Int, Vol.28, pp.420-427, 1997.
  6. R. T. Basting, A. L. Rodrigues, and M. C. Serra. "The Effect of 10% Carbamide Peroxide Bleaching Material on Microhardness of Sound and Demineralized Enamel and Dentin In Situ," Oper Dent, Vol.26, pp.531-539, 2001.
  7. A. L. Josey, L. A. Meyers, and K. Romaniuk, "The effect of a vital bleaching technique on eanamel surface morphology and the bonding of composite resin to enamel," J Oral Rehabil, Vol.23, pp.244-250, 1996.
  8. R. T. Basting, Y. Fernandez, and C. Fernandez, "Effects of a 10% carbamide peroxide bleaching agent on roughness and microhardness of packable composite resins," J Esthet Restor Dent, Vol.17, No.4, pp.256-262, 2005.
  9. J. W. Reinhardt, S. E. Eivins, and E. J. Swift, "A clinical study of nightguard vital bleaching," Quintessence Int, Vol.24, pp.379-384, 1993.
  10. S. Montgomery, I. Rotstein, and A. Stabholz, "External cervical resorption after bleacheing pulpless teeth," Oral Surg, Vol.57, No.2, pp.203-206, 1984.
  11. S. J. Bailey and E. J. Swift, "Effect of home bleaching products on composite resins," Quintessence Int, Vol.23, No.7, pp.489-494, 1992.
  12. S. A. Nathoo, M. B. Chmielewski, and R. E. Kirkup, "Effect of colgate platinum professional tooth whitening system on microhardness of enamel, dentin, and composite resins," Compend Contin Educ Dent, Suppl, pp.627-630, 1994.
  13. H. Ulukapi, Y. Bengerli, and I. Ulukapi, "Effects of pre-and -post operative bleaching on marginal effect of leakage of amalgam and composite restorations," Quintessence Int, Vol.34, pp.5053-5058, 2003.
  14. R. T. Basting, Y. Fernandez, and C. Fernandez, "Effects of a 10% carbamide peroxide bleaching agent on roughness and microhardness of packable composite resins," J Esthet Restor Dent, Vol.17, No.4, pp.256-262, 2005.
  15. N. Akal, H. Over, and A. Olmez, "Effect of carbamide peroxide containing bleaching agents on the morphology and subsurface hardness of enamel," Journal of Clinical Pediatric Dentistry, Vol.25, pp.293-296, 2001.
  16. R. H. Leonard, C. D. Bentley, and V. B. Haywood, "Salivary pH change during 10% carbamide peroxide bleaching," Quintessence Int, Vol.25, pp.547-550, 1994.
  17. M. S. McCraken and V. B. Haywood, "Effect of 10% carbamide peroxide on the subsurface hardness of enamel," Quintessence Int, Vol.26, pp.21-24, 1995.
  18. V. B. Haywood, "Current Status of Nightguard Vital Bleaching," Compend Contin Educ Dent Suppl, Vol.21(suppl 28), pp.S10-S17, 2000.
  19. 최재윤, 심연수, 임범순, "미백한 치아에 다양한 재광화 처리가 무기질 함량 변화에 주는 영향", 대한치과기재학회지, 제35권, 제3호, pp.255-264, 2008.
  20. J. D. White and G. H. Nancollas, "Physical and chemical considerations of the role of firmly and loosely bound fluoride in caries prevention," J Dent Res, Vol.69, pp.587-594, 1990.
  21. M. Sulieman, M. Addy, and E. Macdonald, "The bleaching depth of a 35% hydrogen peroxide based in-office product: a study in vitro," J Dent, Vol.33, No.1, pp.33-40, 2005.
  22. A. Joiner, "Tooth colour: a review of the literature," J Dent Dec, Vol.32, pp.3-12, 2004.
  23. S. A. Nathoo, "The chemistry and mechanisms of extrinsic and intrinsic discoloration," J Am Dent Assoc, Vol.128, pp.6S-10S, 1997.
  24. 김동준, 김영주, 김학근, "생활치 미백제가 우치 법랑질의 투명도에 미치는 영향", 대한치과보존학회지, 제30권, 제3호, pp.178-183, 2005.
  25. J. Shotwell and L. Razzog, "Color stability for long-term soft denture liners," J Prosthet Dent, Vol.68, No.5, pp.836-838, 1992.
  26. W. T. Wozniak, "Proposed guidelines for the acceptance program for dental shade guides," Am J Dent Assoc, Chicago, pp.1-2, 1987.
  27. J. E. Ruyter, K. Nilner, and B. Moller, "Color stability of dental composite resin materials for crown and bridge veneers," Dent Mater, Vol.3, pp.246-251, 1987.
  28. T. Fasanaro, "Bleaching teeth; history, chemicals, and methods used for common tooth discoloration," J Esthet Dent, Vol.4, pp.71-78, 1992.
  29. C. S. Delfino, M. A. Chinelatti, and L. D. Carrasco-Guerisoli, "Effectiveness of home bleaching agents in discolored teeth and influence on enamel microhardness," J Appl Oral Sci, Vol.17, No.4, pp.284-288, 2009.
  30. T. Attin, H. Betke, and F. Schippan, " Potential of fluoridated carbamide peroxide gels to support post-bleaching enamel re-hardening," J Dent, Vol.35, No.9, pp.755-759, 2007.
  31. I. Lewinstein, N. Fuhrer, and N. Churaru, "Effect of different peroxide bleaching regimens and subsequent fluoridation on the hardness of human enamel and dentin," Journal of Prosthetic Dentistry, Vol.92, pp.337-342, 2004.
  32. J. J. Faraoni-Romano, C. P. Turssi, and M. C. Serra, "Concentration-dependent effect of bleaching agents on microhardness and roughness of enamel and dentin," Am J Dent, Vol.20, No.1, pp.31-34, 2007.
  33. T. A. Qunaian, "The effect of whitening agents on caries susceptibility of human enamel," Oper Dent, Vol.30, pp.265-270, 2005.
  34. J. Perdigao, C. Francci, and E. J. Swift, "Ultra-morphological study of the interaction of dental adhesives with carbamide peroxide bleached enamel,", Am J Dent, Vol.11, pp.291-301, 1998.
  35. 심연수, 정미애, 오혜승, "35% hydrogen peroxide 에 dicalcium phosphate dihydrate를 함유한 치아 미백제가 치아의 색과 경도에 미치는 영향", 한국콘텐츠학회논문지, 제10권, 제11호 pp.235-242, 2010.

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