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There is shade mismatch when a porcelain-fused-Zirconia crown is tried in at #9 (Fig.11, as compared to Fig.1 (#8,9 splinted and #10 single unit PFM crowns). The misshade is corrected when a PFM crown is cemented at #9 (Fig.12).
Xin Wei, DDS, PhD, MS 1st edition 07/13/2018, last revision 09/02/2018