Preparation nanocellulose based composite as a flowable dental composite

Dental composite resins due to their aesthetic properties are replacing with amalgam, that operate as same as natural tooth but dental composites are prematurely fracturing when placed in stressful areas and this leads to their short longevity. 1,2 When a little amount of herbal fibers incorporated in the composites lead to increase in their physical and mechanical properties.3 Cellulose has known as one of herbal fibers that we can used in composites for reinforcement. In this report, we have prepared nanocellulose by treating microcrystalline cellulose with sulfuric acid and added to flowable composite for evaluating its compressive strength by ISO 4049 six experimental groups included. Five resin composites containing nanocellulose at different concentrations of 1, 2, 3, 4 and 5 wt% and a control group without any additive have been prepared. The results shown that adding 2% of nanocellulose in flowable dental composites can be increased compressive strength about 74%.

Keywords:

Nanocellulose , Flowable dental composites , Compressive strength , Dental materials