The Journal of Contemporary Dental Practice

Register      Login

SEARCH WITHIN CONTENT

FIND ARTICLE

Volume / Issue

Online First

Archive
Related articles

VOLUME 20 , ISSUE 5 ( May, 2019 ) > List of Articles

ORIGINAL RESEARCH

Radicular Peroxide Penetration from Different Concentrations of Carbamide Peroxide Gel during Intracoronal Bleaching—An In vitro Study

Karayil Binu Nathan, Tisson Varghese Job, Puthan Veetil Nithin, Rajesh Karthik, Sailaja Choudary

Keywords : Bleaching, Carbamide peroxide, Discolored teeth, Hydrogen peroxide

Citation Information : Nathan KB, Job TV, Nithin PV, Karthik R, Choudary S. Radicular Peroxide Penetration from Different Concentrations of Carbamide Peroxide Gel during Intracoronal Bleaching—An In vitro Study. J Contemp Dent Pract 2019; 20 (5):587-592.

DOI: 10.5005/jp-journals-10024-2563

License: CC BY-NC 4.0

Published Online: 01-08-2015

Copyright Statement:  Copyright © 2019; The Author(s).


Abstract

Aim: The aim of this study is to evaluate and compare the amount of radicular peroxide penetration when various concentrations of carbamide peroxide (CP) bleaching gels (10, 15, and 35%) and a mixture of 30% hydrogen peroxide (HP) with sodium perborate are used for intracoronal bleaching. Materials and methods: Fifty extracted single-rooted premolars from young adults were used. The specimens were then divided into five groups such that teeth with varying sizes were equally distributed in all groups. Group I—distilled water (control group), group II—10% CP, group III—15% CP, group IV—35% CP, and group V—30% HP with sodium perborate. Intermediate restorative material (IRM) was used to seal access cavities and left for a week at 37 °C in an incubator. Following the bleaching process, suspended teeth from plastic tubes containing distilled water were removed and the water was used to determine the amount of peroxide levels. A UV-visible spectrophotometer at a wavelength of 480 nm was used to determine the quantity of peroxide based on the optical density. Results: Results showed the highest peroxide leakage in group V, followed by group IV, and then group III, whereas the least peroxide penetration was found in group II, and the control group or group I showed no penetration. The Kruskal–Wallis test showed a significant difference between the various groups tested. The Mann–Whitney test was done to find in which pair of groups there exists a significant difference. It was found that all the groups when compared among themselves showed a significant difference. Conclusion: The present study concluded that lower concentrations of CP 10 and 15% produced lower peroxide leakage. Hence, it could be tried as an alternate to traditional agents in cases with compromised tooth which shows cervical tooth defects where the risk of external root resorption is higher. Clinical significance: The management of discolored teeth involves different techniques; among various techniques, bleaching is considered to be a safe, effective, and relatively noninvasive technique to lighten discolored teeth and it also conserves dental hard tissue.


PDF Share
  1. Attin T, Paque F, et al. Review of the current status of tooth whitening with the walking bleach technique. Int Endod J 2003;36:313–329.
  2. Cappelletto Nogueira Teihexeira E, Hara AT, et al. Use of 37% carbamide peroxide in the walking bleach technique: A Case report. Quintessence Int 2003;35:97–102.
  3. Koulaouzidou E, Lambrianidis T, et al. Role of cementoenamel junction on the radicular penetration of 30% hydrogen peroxide during intracoronal bleaching—in vitro. Endod Dent Traumatol 1996;12:146–150
  4. Lim MY, Lum SOY, et al. An in vitro comparison of the bleaching efficacy of 35% carbamide peroxide with established intracoronal agents. Int Endod J 2004;37:483–488. DOI: 10.1111/j.1365-2591.2004.00829.x.
  5. Leonard RH, Sharma A, et al. Use of different concentrations of carbamide peroxide for bleaching teeth. An in vitro study. Quintessence Int 1998;29(8):503–507.
  6. Camps J, de franceschi H, et al. Time-course diffusion of hydrogen peroxide through human dentin: clinical significance for young tooth internal bleaching. J Endod 2007;33(4):455–459. DOI: 10.1016/j. joen.2006.12.006.
  7. Plotino G, Buono L, et al. Non vital tooth bleaching: a review of the literature and clinical procedures. J Endod 2008;34(4):394–407. DOI: 10.1016/j.joen.2007.12.020.
  8. Hoffmann ME, Meneghini R. Action of hydrogen peroxide on human fibroblast in culture. Photochem Photobiol 1979;30(1): 151–155.
  9. Schroeder E, Scherle WF. Cemento-enamel junction—revisited. J Periodontol Res 1988;23(1):53–59.
  10. Rotstein I, Zyskind D, et al. Effect of different protective base materials on hydrogen peroxide leakage during intracoronal bleaching in vitro. J Endod 1992;18(3):114–117. DOI: 10.1016/S0099-2399(06)81310-5.
  11. Smith JJ, Cunningham CJ, et al. Cervical canal leakage after internal bleaching procedure. J Endod 1992;18(10):476–481.
  12. Weiger R, Kuhn A, et al. Radicular penetration of hydrogen peroxide during intracoronal bleaching with various forms of sodium perborate. Int Endod J 1994;27:313–317.
  13. Gokay O, Ziraman F, et al. Radicular peroxide penetration from carbamide peroxide gels during intracoronal bleaching. Int Endod J 2008;41:556–560. DOI: 10.1111/j.1365-2591.2008.01384.x.
  14. Teixeira ECN, Hara AT, et al. Effect of non-vital tooth bleaching on microleakage of coronal access restorations. J Oral Rehabil 2003;30:1123–1127.
  15. Demarco FF, Freitas JM, et al. Microleakage in endodontically treated teeth: influence of calcium hydroxide dressing following bleaching. Int Endod J 2001;34:495–500.
  16. Sharafeddin F, Jamalipour GR. Effect of 35% carbamide peroxide gel on surface roughness and hardness of composite resins. J Dent 2010;7(1):6–12.
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.