Аутори:
1. Branislava Petronijević, Медицински факултет Универзитета у Новом Саду, Serbia
2. Sebastijan Baloš, Универзитет у Новом Саду, Технолошки факултет, Нови Сад, Serbia
3. Aleksandra Maletin, Медицински факултет Универзитета у Новом Саду, Serbia
4. Ivan Šarčev, Медицински факултет Универзитета у Новом Саду, Serbia

Апстракт:
Abstract: Background Flowable dental composite resin is low strength compared to conventional composite resin, due to a low amount of filler, necessary for achieving low viscosity and ease of handling. The aim of this study was to improve mechanical properties of flowable dental composite resin by adding small amount of nanoparticles, which would not compromise handling properties. Methods. A commercially available flowable dental composite resin material was mixed with 7 nm aftertreated hydrophobic fumed silica and cured by an UV lamp. Four sets of samples were made: control sample (unmodified), the sample containing 0.05%, 0.2% and 1% nanosilica. Microhardness of the samples were tested. One-way ANOVA followed by Tukey’s test with the significance value of p < 0.05 was performed to statistically analyze the obtained results. Results. It was found that 0.05% is the most effective nanosilica content. On the other hand, when 0.2% and 1% nanosilica content was tested, different results were obtained, some of the mechanical properties even dropped, while some were insignificantly improved. Conclusions. Low nanosilica addition proved more effective in improving mechanical properties compared to higher additions. Furthermore, handling properties are unaffected by nanosilica addition.

Кључне речи:
micro hardness, nanoparticles, flowable composite resin

Тематска област:
СИМПОЗИЈУМ Б - Биоматеријали и наномедицина

Датум пријаве сажетка:
23.07.2018.

Конференцијa:
Contemporary Materials 2018 - Савремени Материјали