Abstract
Aim: to evaluate the effect of adding an experimentally prepared microcapsule containing healing liquid to commercially available flowable composite on its fracture toughness and healing crack efficiency. Methodology: Seventy composite specimens were divided into two groups according to the material used, group C: as-received commercially available flowable composite while group HC: commercially available flowable composite modified by adding self-healing microcapsule. Preloading of the specimens with a fixed load (60 N) was done before the storage period. The fracture toughness (KIC) was measured for each group after three days of water storage. The crack healing efficiency of HC group was also evaluated mechanically, chemically and morphologically. Results: HC group revealed a statistically significant higher fracture toughness when compared to that of C group after three days of water storage. Moreover, there was significant higher percentage of crack healing efficiency recorded for the HC group (19%±2.53) when compared to that of the control group. Conclusion: The prepared healing composite model in the current study accomplished an improvement in the fracture toughness and crack healing efficiency when compared to the control group.
Published Version
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