International Journal of Clinical Pediatric Dentistry

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VOLUME 8 , ISSUE 1 ( January-April, 2015 ) > List of Articles


Effect of Catalase and Sodium Fluoride on Human Enamel bleached with 35% Carbamide Peroxide

Ruchi Thakur, Anand L Shigli, Divya S Sharma, Gagan Thakur

Keywords : In-office bleaching, Carbamide peroxide, Catalase, Sodium fluoride

Citation Information : Thakur R, Shigli AL, Sharma DS, Thakur G. Effect of Catalase and Sodium Fluoride on Human Enamel bleached with 35% Carbamide Peroxide. Int J Clin Pediatr Dent 2015; 8 (1):12-17.

DOI: 10.5005/jp-journals-10005-1276

License: CC BY-NC 4.0

Published Online: 00-04-2015

Copyright Statement:  Copyright © 2015; Jaypee Brothers Medical Publishers (P) Ltd.


Aim: To evaluate the effects of postbleaching antioxidant application fluoridation treatment on the surface morphology and microhardness of human enamel. Materials and methods: Ten freshly extracted human maxillary central incisors were cut at cementoenamel junction. Crown portion was sectioned into six slabs which were divided into five groups: group A—untreated controls; group B—35% carbamide peroxide (CP); group C—35% CP and catalase; group D—treatment with 35% CP and 5% sodium fluoride; group E – 35% CP, catalase and 5% sodium fluoride. Thirty-five percent carbamide peroxide application included two applications of 30 minutes each at a 5-day interval. After treatment, the slabs were thoroughly washed with water for 10 seconds and stored in artificial saliva at 37°C until the next treatment. Two percent sodium fluoride included application for 5 minutes. Three catalase included application for 3 minutes. Results: After 5 days, groups B and C showed significantly decreased enamel microhardness compared to control. Group D specimens showed relatively less reduction in enamel microhardness than group C specimens. There is a marked increase in enamel microhardness in group E specimens. Conclusions: Fluoride take up was comparatively enhanced after catalase application resulting in less demineralization and increased microhardness. How to cite this article: Thakur R, Shigli AL, Sharma DS, Thakur G. Effect of Catalase and Sodium Fluoride on Human Enamel bleached with 35% Carbamide Peroxide. Int J Clin Pediatr Dent 2015;8(1):12-17.

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