Abstract


Oral Presentation

COMPARATIVE EVALUATION OF THREE ANTIOXIDANTS ON THE CALCIUM: PHOSPHORUS RATIO OF ENAMEL BLEACHED WITH 35%HYDROGEN PEROXIDE: AN IN VITRO QUANTITATIVE ENERGY-DISPERSIVE X-RAY ANALYSIS(EDAX )

ANUSHA

Adhiparasakthi Dental College and Hospital, India

INTRODUCTION:
The study is to evaluate the calcium:phosphorus loss from the enamel surface following bleaching with 35%hydrogen peroxide and reversal with antioxidants- 10% sodium ascorbate, 10% green tea and 5% oregano, using energy dispersive x-ray analysis.

METHODOLOGY:
40 non carious, freshly extracted human permanent maxillary central incisors without any  visible effects were used in this study and were bleached with 35% H2O2 and divided in to 4 groups:
          Group 1: Control group
          Group 2: Treated with 10%sodium ascorbate
          Group 3: Treated with 10%green tea
          Group 4: Treated tooth with 5% oregano

The mineral content of each specimen after reversal was measured using EDAX analysis

SUMMARY OF RESULTS:
To be concluded after the completion of the study.