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. Author manuscript; available in PMC: 2017 Mar 1.
Published in final edited form as: Dent Mater. 2016 Jan 11;32(3):442–449. doi: 10.1016/j.dental.2015.12.010

Fig. 2.

Fig. 2

Contact-induced splits in anatomically correct crowns loaded with tungsten carbide sphere of radius 3.2 mm in a mechanical testing machine, top views (upper) and side views (lower), for zirconia (Y-TZP), lithium disilicate CAD, and resin-based ceramic nanocomposite crowns. Side views are obtained after separating the split fragments. Split paths follow fissure valleys closely, but not exactly.