| Autor: |
Güngör, H. C., Turgut, M. D., Attar, N., Altay, N. |
| Předmět: |
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| Zdroj: |
Operative Dentistry; May/Jun2003, Vol. 28 Issue 3, p267-273, 7p |
| Abstrakt: |
This study evaluated the microleakage of a flowable polyacid-modified resin composite used as a fissure sealant on air-abraded teeth in comparison to a resin-based fluoride sealant. Sixty extracted human third molars were divided into six subgroups (n=10) under two main groups (fissure sealant materials). The occlusal surfaces of the teeth were air-abraded at 80 psi using 50 µm particles of aluminum oxide for 30 seconds, followed by rinsing and drying. Delton FS+(Dentsply International) and Dyract Flow (Dentsply DeTrey) were applied to the teeth in subgroups following application of: a) an acid etching and bonding agent, b) bonding agent alone or c) air-abrasion alone, respectively. Acid etching (Delton EZ Etch, Dentsply International) and bonding agent application (Prime & Bond NT, Dentsply DeTrey) were done according to the manufacturers' instructions. The teeth were thermocycled for 500 cycles between 5°C and 55°C with dwell time of 15 seconds. Basic fuchsin (0.5%) staining followed by buccolingual sectioning was performed. Microleakage was evaluated at 20x optical magnification. Kruskal-Wallis test was used to make comparisons among six subgroups. pairwise comparisons were done with the Mann-Whitney U test with the level of significance set as α=0.05. Dyract Flow application as a fissure sealant on air-abraded permanent teeth in combination with acid etching and/or bonding agent provided microleakage results comparable to Delton FS+Results also showed that the use of air abrasion, alone, resulted in significantly higher microleakage scores. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
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