JBR Journal of Interdisciplinary Medicine and Dental Science
Open Access

Abstract

This study compares the microleakage of cavities filled with bulk-fill flowable composite and those incrementally filled with FiltekZ250 micro-hybrid composite at the enamel and dentin margins. A total of 102 sound human premolars were collected and randomly divided into 6 groups of 17. In groups 1, 3 and 5, standard class II mesio-occlusal cavities with specific dimensions were prepared with their gingival margin 1 millimeter above the cementoenamel junction. In groups 2, 4 and 6, standard class II mesio-occlusal cavities with specific dimensions were prepared with their gingival margin 1 millimeter below the cementoenamel junction. After etching of the cavities, Single Bond 2 was applied as recommended by the manufacturer. In groups 1 and 2, all cavities were incrementally filled with FiltekZ250 composite. In groups 3 and 4, the gingival 2 mm of the cavity was filled with Filtek bulk-fill flowable composite and the rest of the cavity was restored with FiltekZ250. In groups 5 and 6, the gingival 4 mm of the cavity was restored with Filtek bulk-fill flowable composite and the remaining part was restored with FiltekZ250. The teeth were immersed in 2% basic fuchsine for 24 hours and after rinsing and drying, they were mesiodistally sectioned by a diamond disc. The sections were evaluated under a stereomicroscope at ×40 magnification. No significant difference was noted in the microleakage scores of the gingival margins of the 6 groups. No microleakage was noted in the enamel margins of the samples. Neither Filtek bulk-fill flowable nor FiltekZ250 could completely prevent gingival wall microleakage. Based on the results, Filtek bulk-fill flowable composite can be safely and reliably used in 4 mm thick increments.

Biography

Email: edwinsarkisians@outlook.com