Abd-Elmotelb MA, Khattab N.M. And Moness A.M.,

ABSTRACT

Objectives: The Purpose Of The Study Was To Evaluate The Efficacy Of Two Different Bleaching Agents (Hydrogen Peroxide 10% Versus Carbamide Peroxide 10%) For Internal Bleaching Of Primary Teeth.

Materials and Methods: Thirty Extracted Human Primary Anterior Teeth With Intact Crowns Were Selected For The Study. Pulpectomy Was Performed And Baseline Color Evaluation With Spectrophotometer And Visual Method Was Obtained Then Each Tooth Was Artificially Stained With 2 Ml Of Fresh Rabbit Blood And Centrifuged. The Teeth Were Randomly Divided Into Three Experimental Groups Of 10 Teeth Each. 0.04 Ml Of The Each Tested Bleaching Agents Was Syringed Into The Access Cavity Of Each Tooth And, In The Control Group, 0.04 Ml Of Distilled Water Was Syringed Into The Access Cavity. Access Cavities Were Sealed With IRM. All Teeth Were Placed At 37�C In An Incubator Throughout The Experiment. The Color Of The Bleached Teeth Was Determined At 0,7 And 14 Days For Spectrophotometeric Evaluation And 0,3,7,10 And 14 Days For Visual One. The Data Obtained Were Collected, Tabulated And Subjected To Statistical Analysis Using Mann-Whitney Test.

Results: There Was Statistical Significance Among The Hydrogen Peroxide And Carbamide Peroxide Versus Control Groups Either Using Spectrophotometer Or Visual Evaluation (P=0.001). Also, There Was Significance Between Hydrogen Peroxide Versus Carbamide Peroxide At Different Observation Periods. Conclusion: The Bleaching Efficacy Of 10% Hydrogen Peroxide Gel Was More Effective Than 10% Carbamide Peroxide In Bleaching The Artificially Discolored Primary Teeth.