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. 2015 Apr 23;7(2):151–159. doi: 10.4047/jap.2015.7.2.151

Fig. 7. Sample 4 before steam-cleaning (A-D) with substantial debris on the cone and the contact surface as well as severely roughened surface and isolated defects. Particles could be removed after the ultra-sonic cleaning process; CAD/CAM milling roughnesses and defects remained (E-H).

Fig. 7