The implant and abutment at #6 are 4x15 mm and 4.5x5.5(4) mm, respectively.  The 2.5x14(2) mm 1-piece implant is placed deeper than earlier (Fig.10).  There is no bone loss 7 or 12 months postop, respectively (Fig.11,12).  With access holes at #6 and 7 (fabricated by mistake), crowns are bonded with minimal residual cement (Fig.14 <).  There is no hard (Fig.15,16) or soft (Fig.17 *) atrophy 26 months postop, i.e., 13 months post cementation, due to the presence of socket shield (Fig.15 <, as compared to Fig.6).  In fact the tooth #8 has mobility and fremitus (short root/poor crown/root ratio, Fig.16); occlusal adjustment is done 13 months post cementation.  The crown is dislodged 2 years 1 month post cementation; a prefabricated post is being tried in (Fig.18).

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Xin Wei, DDS, PhD, MS 1st edition 01/13/2020, last revision 03/04/2020