Oxygen release of tetra acetyl ethylene diamine (TAED) and sodium perborate combination.
OBJECTIVE
To evaluate the effect of tetra acetyl ethylene diamine (TAED) on oxygen release from sodium perborate and to compare it with sodium perborate-hydrogen peroxide (H(2)O(2)) and sodium perborate-distilled water mixtures.


METHODS
Six groups were evaluated: control groups (groups I-III), sodium perborate was mixed with distilled water or 3% or 30% H(2)O(2); experimental groups (groups IV-VI), sodium perborate was mixed with TAED in different ratios and then distilled water was added to these mixtures. The amount of oxygen released from the samples was measured with a digital oxygen meter at room temperature (25 degrees C) and body temperature (37 degrees C) after 1 min, 1-6 h and 12 h and on each day up to 1 week. The results were statistically evaluated by one-way analysis of variance and post hoc Tukey's tests.


RESULTS
The TAED groups demonstrated significantly higher amounts of released oxygen after 1 min and 1 h at 25 degrees C and 1 min at 37 degrees C (P < 0.05). At all other measurement times, the amount of TAED in each mixture did not alter the amount or speed of oxygen release (P > 0.05).


CONCLUSIONS
Tetra acetyl ethylene diamine groups achieved their maximum oxygen release 2 h earlier at 25 degrees C and 1 h earlier at 37 degrees C than the other groups. Thus, TAED accelerated oxygen release from sodium perborate-distilled water mixtures regardless of its proportions up to 24 h.
Celik
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Department of Restorative Dentistry & Endodontics, Ege University School of Dentistry, Bornova, Izmir, Turkey. esrauzer@yahoo.com
Türkün
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Yapar
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D001881:Borates / Q000737:chemistry*; D004338:Drug Combinations; D005029:Ethylenediamines / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D016877:Oxidants / Q000737:chemistry*; D010100:Oxygen / Q000032:analysis; D014073:Tooth Bleaching; D014867:Water / Q000737:chemistry
D001881:Borates; D004338:Drug Combinations; D005029:Ethylenediamines; D016877:Oxidants; D014867:Water; D006861:Hydrogen Peroxide; D010100:Oxygen; C027707:sodium perborate