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. Author manuscript; available in PMC: 2011 Nov 1.
Published in final edited form as: J Mech Behav Biomed Mater. 2010 Jul 16;3(8):623–629. doi: 10.1016/j.jmbbm.2010.07.004

Figure 4.

Figure 4

SEM image of a detailed view of the twist hackle region, indicated in Fig 3. The direction of crack propagation (dcp) is indicated by the arrow (moving downwards towards the gingival side)