MICROLEAKAGE OF TERM USED WITH SODIUM PERBORATE WATER AND SODIUM PERBORATE/SUPEROXOL IN THE WALKING BLEACH TECHNIQUE/

This study compared the sealing ability of TERM as an interim restorat ion for the ''walking bleach'' technique when using either sodium perb orate/water or sodium perborate/superoxol. Thirty-three extracted maxi llary premolars were restored with TERM after placing either a cotton pellet (control), a paste of sodium perborate and water, or a paste of sodium perborate and superoxol in the chamber. Microleakage was asses sed at 24 h, 8 days, and 15 days using a fluid filtration method. Stat istical analysis revealed both ''walking bleach'' groups had significa ntly higher numbers of teeth demonstrating microleakage than the contr ol group. There was no statistically significant difference in microle akage between the two ''walking bleach'' groups. The results of this s tudy indicated that the temporary restorative material, TERM, provided an unsatisfactory seal when used with either walking bleach technique . When used over a cotton pellet, TERM provided an excellent seal.