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Bleaching effect of carbamide peroxide gel on discolored nonvital teeth


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Bleaching effect of carbamide peroxide gel on discolored nonvital teeth

Article information

Restor Dent Endod. 2002;27(4):441-447
Publication date (electronic) : 2002 July 31
doi : https://doi.org/10.5395/JKACD.2002.27.4.441
Sun-Ah Park, Sun-Ho Kim, Yun-Chan Hwang, Byung-Ju Oh, Chang Youn, Yeong-Joon Park*, Sun-Wa Jeong**, In-Nam Hwang, Won-Mann Oh
Department of Conservative Dentistry, College of Dentistry, Korea.
*Department of Dental Materials, Dental Science Research Institute, Chonnam National University, Korea.
**Department of Dentistry, College of Medicine, Seonam University, Korea.

Abstract

The bleaching of discolored nonvital teeth is conservative treatment that satisfy the cosmetic desire. The most common method for this treatment, walking bleaching, is using 30% hydrogen peroxide and sodium perborate.

Many alternatives are suggested for preventing the external cervical root resorption that is the common complication of the nonvital teeth bleaching with 30% hydrogen peroxide.

The same extent of oxidation reactions as that resulted by the bleaching with the application of 30% hydrogen peroxide and sodium perborate can also be acquired more safely by materials that contain 10% carbamide peroxide, used primarily for the bleaching of vital teeth. Therefore, this study was performed to evaluate the efficacy of 10% and 15% carbamide peroxide bleaching gel in nonvatal teeth bleaching.

The internal bleaching of intentionally discolored teeth was performed in vitro with 10% carbamide peroxide (Group 1), 15% carbamide peroxide (Group 2), mixture of distilled water and sodium perborate (Group 3), and mixture of 30% hydrogen peroxide and sodium perborate (Group 4). The bleaching materials were refreshed following 3, 6, 9 and 12 days. To evaluate the bleaching effect, the color change of the crowns was measured at 1, 2, 3, 4, 7 and 15 days of bleaching using the colorimeter.

The results were as follows :

1. L* and ΔE* values were increased with time in all bleaching agents(p<0.01).

2. There was no significant difference in L* and ΔE* value among bleaching agents.

3. ΔE* value higher than 3 was shown after 3 days of bleaching with 10% carbamide peroxide gel, 1 day with 15% carbamide peroxide gel, 4 days with mixture sodium perborate and distilled water and 4 days with mixture sodium perborate and 30% hydrogen peroxide, respectively.

These results revealed that the use of 10% and 15% carbamide peroxide bleaching gel in non-vital teeth bleaching is as effective as mixture of distilled water and sodium perborate and mixture of 30% hydrogen peroxide and sodium perborate. Accordingly, carbamide peroxide could be used clinically to bleach discolored non-vital teeth.

Keywords: Bleaching; Nonvital teeth; Carbamide peroxide; Sodium perborate

References

1. Grossman LI. Endodontic Practice 1978. ed. 2th ed. Philadelphia: Lea & Febiger; 322–323.
2. Nutting EB, Poe GS. A new combination of bleaching teeth. J South Calif Dent Assoc 1963. 31289–291.
3. Latcham NL. Postbleaching cervical resorption. J Endod 1986. 12262–264.
4. Goon WWY, Cohen S, Borer RF. External cervical root resorption following bleaching. J Endod 1986. 12414–418.
5. Friedman S, Rotstein I, Libfeld H, Stabholz A, Heling I. Incidence of external root resorption and esthetic results in 58 bleached pulpless teeth. Endod Dent Traumatol 1988. 423–26.
6. Chivian N. In : Cohen S, Burns RC, eds. Root resorption. Pathways of the pulp 1987. 4th edth ed. St. Louis: C.V Mosby; 534–538.
7. Holmstrup G, Palm AM, Lambjerg-Hansen H. Bleaching of discolored root-filled teeth. Endod Dent Traumatol 1988. 4197–201.
8. Spasser HF. A simple bleaching technique using sodium perborate. NY State Dent J 1961. 27332–334.
9. Rotstein I, Alkind M, Mor C, Tarabeach A, Friedman S. In vitro efficacy of sodium perborate preparation used for intracoronal bleaching of discolored non-vital teeth. Endod Dent Traumatol 1991. 7177–180.
10. Rotstein I, Mor C, Friedman S. Prognosis of intracoronal bleaching with sodium perborate preparation in vitro: 1-year study. J Endod 1993. 1910–12.
11. Ho S, Goering AC. An in vitro comparison of different bleaching agents in the discolored teeth. J Endod 1989. 15106–111.
12. Costas FL, Wong M. Intracoronal isolating barriers : Effect of location root leakage and effectiveness of bleaching agents. J Endod 1991. 17365–368.
13. Rotstein I, Zyskind D, Lewinstein I, Baumberger N. Effect of different protective base materials on hydrogen peroxide leakage during intracoronal bleaching in vitro. J Endod 1992. 18114–117.
14. McInerney ST, Zillich R. Evaluation of intracoronal sealing ability of three materials. J Endod 1992. 18376–378.
15. Smith JJ, Cunningham CJ, Montgomery S. Cervical canal leakage after internal bleaching procedures. J Endod 1992. 18476–481.
16. Warren MA, Wong M, Ingram TA III. An in vitro comparison of bleaching agents on the crowns and root of discolored teeth. J Endod 1990. 16463–467.
17. Baratieri LN, Ritter AV, Monterio S Jr, Caldera de Andrada MA, Cardoso Vieira LC. Nonvital tooth bleaching: Guidelines for the clinician. Quintessence Int 1995. 26597–608.
18. Rotstein I. Role of catalase in the elimination of residual hydrogen peroxide following tooth bleaching. J Endod 1993. 19567–569.
19. Haywood VB, Heymann HO. Nightguard vital bleaching. Quintessence Int 1989. 20173–176.
20. Goldstein RE, Garbar DA. Complete dental bleaching 1995. Hongkong Quintessence Publishing Co; 25–33. 71–100.
21. Strassler HE. Insights and innovations: at-home bleaching. J Esthet Dent 1989. 1176.
22. Haywood VB, Heymann HO. Response of normal and tetracycline-stained teeth with pulp-size variation to nightguard vital bleaching. J Esthet Dent 1994. 6109–114.
23. Haywood VB. History, safty, and effectiveness of current bleaching techniques and applications of nightguard vital bleaching technique. Quintessence Int 1992. 23471–488.
24. Settembrini L, Gultz J, Kaim J, Scherer W. A technique for bleaching nonvital teeth : inside/outside bleaching. J Am Dent Assoc 1997. 1281283–1284.
25. Liebenberg WH. Intracoronal lightening of discolored pulpless teeth : A modified walking bleaching technique. Quintessence Int 1997. 28771–777.
26. Carillo A, Arrendondo Trevino MV, Haywood VB. Simultaneous bleaching of vital teeth and open-chamber nonvital tooth with 10% carbamide peroxide. Quintessence Int 1998. 29643–648.
27. Vachon C, Vanek P, Friedman S. Internal bleaching with 10% carbamide peroxide in vitro. Pract Periodontics Aesthet Dent 1998. 101145–1154.
28. Freccia WF, Peters DD. A technique for staining extracted teeth : a research and teaching aid for bleaching. J Endod 1982. 867–69.
29. Fasanaro T. Bleaching teeth: history, chemicals, and methods used for common tooth discolorations. J Esthet Dent 1992. 471–78.
30. Kleber CJ, Putt MS, Nelson BJ. In vitro tooth whitening by a sodium bicarbonate/peroxide dentifrice. J Clin Dent 1998. 916–21.
31. Bosch JJ, Coops JC. Tooth color and reflectance as related to light scattering and enamel hardness. J Dent Res 1995. 74374–380.
32. Lenhard M. Assessing tooth color change after repeated bleaching in vitro with a ten percent carbamide peroxide gel. J Am Dent Assoc 1996. 1271618–1624.
33. Kuehni FG, Marcus RT. An experiment in visual scanning of small color difference. Color Res Appl 1979. 483–91.
34. Ruyter IE, Nilnu K, Moller B. Color stability of dental composite resin materials for crown and bridge veneers. Dent Mater 1987. 3246–251.
35. Gross MD, Moser JB. A colorimetric study of coffee and tea staining of four composite resins. J Oral Rehabil 1977. 4311–322.
36. Seghi RR, Hewlett ER, Kim J. Visual and instrumental colorimetric assessments of small color differences on translucent dental porcelain. J Dent Res 1989. 681760–1764.

Article information Continued

Copyright © 2002 Korean Academy of Conservative Dentistry
(open-access) :

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Fig. 1

Fig. 1

The L* values of the teeth are shown.

Fig. 2

Fig. 2

The total color change of the teeth are shown.

Table 1

Description of the experimental groups

Table 1

Table 2

Mean color parameters(L*, a*, b*) and total color changes(ΔE*) before and after bleaching procedure for 15 days Mean(S.D), n=7

Table 2