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. Author manuscript; available in PMC: 2014 Nov 1.
Published in final edited form as: Dent Mater. 2013 Sep 17;29(11):10.1016/j.dental.2013.08.207. doi: 10.1016/j.dental.2013.08.207

Fig. 3.

Fig. 3

Micrographs of crack tips (2 months bacteria treatment). a–b) Crack deflection and bridging at a fatigue crack tip in the 15BAG composite. c) Crack bridging at a fatigue crack tip in the Heliomolar composite. Direction of crack propagation was left to right.