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. Author manuscript; available in PMC: 2017 Apr 1.
Published in final edited form as: J Dent. 2016 Jan 22;47:86–93. doi: 10.1016/j.jdent.2016.01.008

Figure 4.

Figure 4

Effect of water-aging time on self-healing of composite containing 7.5% microcapsules. (A) Virgin and healed fracture toughness, and (B) self-healing efficacy (mean ± sd; n = 6). The cured composite specimens were water-aged for 1 d to 6 months (with 6 specimens for each time period), and then fractured to measure KIC-virgin. They were then healed in a humidor in air for 1 d and then re-fractured to measure KIC-healed. In (A), values with dissimilar letters are significantly different from each other (p < 0.05). In (B), all values are statistically similar (p > 0.1).