الفهرس يوجد فقط 14 صفحة متاحة للعرض العام
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المستخلص
Aim This in vitro study was carried out to evaluate the effect of ultrasonic packing using SonicFill composite (compared to flowable and conventional composites), using different repair mechanical and chemical surface treatments protocols on the adaptation and void formation of repaired composite restorations. M&M: Sixty sound, non-carious human premolars were selected for the study. A standardized box-shaped class I cavity preparation, Pre-repair aging was done for one month at 37{u25E6}C in an incubator in saline. Following aging, teeth were divided into 2 main groups either roughened or not roughened. Then, each group was further divided into 4 subgroups, according to the surface pre-treatment protocol; where the first subgroup received no surface treatment, the second subgroup was pre-treated by acid etch only, while the third subgroup was pre-treated by etch-and-rinse protocol, then last subgroup was pre-treated with self-etch protocol. Sectioning of teeth into two halves. Images of both cut tooth halves were taken using a digital light microscope at a magnification of 70X. RESULTS: SonicFill, with its initial flow capacity, adapted well to the base of the defect, on the contrary to conventional viscosity composite which adapted well to the axial walls not to the base of the defect. Regarding adaptation to old composite, the tested materials showed proper adaptation, regardless of mechanical roughening or chemical surface pre-treatment utilized