Objectives: The present study is aimed at evaluating the long-term color stability of endodontically-treated teeth which have been subjected to in-office and the walking bleach treatment with carbamide peroxide. Methods and Materials: Sixty patients in need of dental bleaching following endodontic treatment were selected for the study. After endodontic treatment, the patients were subjected to in-office dental bleaching and the walking bleach technique with 10% carbamide peroxide. A color shade score was given to each patient before and after the bleaching procedures and at the final follow-up. Data were statistically analyzed. Results: At the 21-year follow-up, 42 out of 60 patients were eligible for the retrospective evaluation. Failures were noticed in 9 patients showing a color mismatch of two or more shades in comparison with adjacent teeth. A success rate of 78.6% was reported. The statistical analyses showed significant differences between Baseline vs End of Treatment and Baseline vs Follow-Up (p<0.0001) while no statistically significant differences were noticed between End of Treatment vs Follow-Up (p>0.05). The endodontic treatment failed in 3 patients. Discussion: The null hypothesis was rejected. The bleaching effect of carbamide peroxide in non vital teeth proved to be stable and reliable in the long-term. The clinical observations performed in the present investigation are consistent with the results of previous studies. No chronic sensitivity was observed in any patient. Although no root resorption was observed, few root fractures were noticed and the detrimental effects of peroxide on dental hard tissue may have contributed to such failures. Conclusions: Carbamide peroxide proved to be an effective dental whitening agent in the long-term for endodontically-treated teeth with both in-office and walking bleach techniques. Moreover, the vertical condensation technique of warm guttapercha did not seem to be affected by the intra-coronal application of carbamide peroxide. Clinical Significance: Carbamide peroxide can be considered a safe and effective bleaching agent to maintain color stability of non vital teeth in the long term.
In-office and walking bleach treatment of non-vital teeth with 10% carbamide peroxide: a 21-year retrospective evaluation
AMATO, Massimo;
2012-01-01
Abstract
Objectives: The present study is aimed at evaluating the long-term color stability of endodontically-treated teeth which have been subjected to in-office and the walking bleach treatment with carbamide peroxide. Methods and Materials: Sixty patients in need of dental bleaching following endodontic treatment were selected for the study. After endodontic treatment, the patients were subjected to in-office dental bleaching and the walking bleach technique with 10% carbamide peroxide. A color shade score was given to each patient before and after the bleaching procedures and at the final follow-up. Data were statistically analyzed. Results: At the 21-year follow-up, 42 out of 60 patients were eligible for the retrospective evaluation. Failures were noticed in 9 patients showing a color mismatch of two or more shades in comparison with adjacent teeth. A success rate of 78.6% was reported. The statistical analyses showed significant differences between Baseline vs End of Treatment and Baseline vs Follow-Up (p<0.0001) while no statistically significant differences were noticed between End of Treatment vs Follow-Up (p>0.05). The endodontic treatment failed in 3 patients. Discussion: The null hypothesis was rejected. The bleaching effect of carbamide peroxide in non vital teeth proved to be stable and reliable in the long-term. The clinical observations performed in the present investigation are consistent with the results of previous studies. No chronic sensitivity was observed in any patient. Although no root resorption was observed, few root fractures were noticed and the detrimental effects of peroxide on dental hard tissue may have contributed to such failures. Conclusions: Carbamide peroxide proved to be an effective dental whitening agent in the long-term for endodontically-treated teeth with both in-office and walking bleach techniques. Moreover, the vertical condensation technique of warm guttapercha did not seem to be affected by the intra-coronal application of carbamide peroxide. Clinical Significance: Carbamide peroxide can be considered a safe and effective bleaching agent to maintain color stability of non vital teeth in the long term.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
