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Radicular peroxide penetration from carbamide peroxide gels during intracoronal bleaching.
Int Endod J. 2008 Jul; 41(7):556-60.IE

Abstract

AIM

To evaluate and compare radicular peroxide diffusion from different concentrations of carbamide peroxide bleaching gels. METHODOLOGY; Fifty maxillary premolar teeth were separated into five groups (n = 10). Standardized endodontic access cavities were prepared in the occlusal surfaces, and the root canals were prepared using a step back technique and filled using the lateral compaction technique. The gutta-percha filling was removed 4 mm short of the cemento-enamel junction (CEJ) and a 2-mm-thick glass-ionomer cement base was placed. Outer root surfaces were sealed with wax and nail polish, leaving the coronal third of the tooth and the CEJ exposed. All teeth were immersed in a plastic tube containing 2 mL of distilled water, and the experimental groups were treated with a bleaching agent of either 10%, 17% or 37% carbamide peroxide (CP) or a mixture of 30% hydrogen peroxide (HP) and sodium perborate (SP) placed into the coronal pulp chamber of teeth and left for 24 h. Peroxide penetration was measured using the ferrothiocyanate method. Statistical analysis of data was conducted by using the Kruskal-Wallis Analysis of Variance and Mann-Whitney U test.

RESULTS

Higher peroxide penetration occurred with the 30% HP-SP mixture than with the CP bleaching gels, and the 37% CP group also promoted greater peroxide penetration than the other CP groups (P < 0.05). There was no statistically significant difference between 10% and 17% CP groups (P > 0.05).

CONCLUSION

Peroxide penetration of CP gels was significantly lower than that of a HP-SP mixture.

Authors+Show Affiliations

Department of Restorative Dentistry, Faculty of Dentistry, University of Ankara, Ankara, Turkey. ogokay@dentistry.ankara.edu.trNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

18355252

Citation

Gökay, O, et al. "Radicular Peroxide Penetration From Carbamide Peroxide Gels During Intracoronal Bleaching." International Endodontic Journal, vol. 41, no. 7, 2008, pp. 556-60.
Gökay O, Ziraman F, Cali Asal A, et al. Radicular peroxide penetration from carbamide peroxide gels during intracoronal bleaching. Int Endod J. 2008;41(7):556-60.
Gökay, O., Ziraman, F., Cali Asal, A., & Saka, O. M. (2008). Radicular peroxide penetration from carbamide peroxide gels during intracoronal bleaching. International Endodontic Journal, 41(7), 556-60. https://doi.org/10.1111/j.1365-2591.2008.01384.x
Gökay O, et al. Radicular Peroxide Penetration From Carbamide Peroxide Gels During Intracoronal Bleaching. Int Endod J. 2008;41(7):556-60. PubMed PMID: 18355252.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Radicular peroxide penetration from carbamide peroxide gels during intracoronal bleaching. AU - Gökay,O, AU - Ziraman,F, AU - Cali Asal,A, AU - Saka,O M, Y1 - 2008/03/18/ PY - 2008/3/22/pubmed PY - 2008/9/6/medline PY - 2008/3/22/entrez SP - 556 EP - 60 JF - International endodontic journal JO - Int Endod J VL - 41 IS - 7 N2 - AIM: To evaluate and compare radicular peroxide diffusion from different concentrations of carbamide peroxide bleaching gels. METHODOLOGY; Fifty maxillary premolar teeth were separated into five groups (n = 10). Standardized endodontic access cavities were prepared in the occlusal surfaces, and the root canals were prepared using a step back technique and filled using the lateral compaction technique. The gutta-percha filling was removed 4 mm short of the cemento-enamel junction (CEJ) and a 2-mm-thick glass-ionomer cement base was placed. Outer root surfaces were sealed with wax and nail polish, leaving the coronal third of the tooth and the CEJ exposed. All teeth were immersed in a plastic tube containing 2 mL of distilled water, and the experimental groups were treated with a bleaching agent of either 10%, 17% or 37% carbamide peroxide (CP) or a mixture of 30% hydrogen peroxide (HP) and sodium perborate (SP) placed into the coronal pulp chamber of teeth and left for 24 h. Peroxide penetration was measured using the ferrothiocyanate method. Statistical analysis of data was conducted by using the Kruskal-Wallis Analysis of Variance and Mann-Whitney U test. RESULTS: Higher peroxide penetration occurred with the 30% HP-SP mixture than with the CP bleaching gels, and the 37% CP group also promoted greater peroxide penetration than the other CP groups (P < 0.05). There was no statistically significant difference between 10% and 17% CP groups (P > 0.05). CONCLUSION: Peroxide penetration of CP gels was significantly lower than that of a HP-SP mixture. SN - 1365-2591 UR - https://www.unboundmedicine.com/medline/citation/18355252/Radicular_peroxide_penetration_from_carbamide_peroxide_gels_during_intracoronal_bleaching_ L2 - https://doi.org/10.1111/j.1365-2591.2008.01384.x DB - PRIME DP - Unbound Medicine ER -