Buccolingual threads are also exposed 3 years 9 months post cementation (Fig.6).  An ideal treatment is probably to remove the 4.5x17 mm tissue-level implant and place a 3.8x10 mm bone-level one deeper and a little mesial with bone graft.

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Xin Wei, DDS, PhD, MS 1st edition 12/24/2019, last revision 12/25/2019