Twenty six months post cementation, periimplantitis develops buccally at #30 (Fig.1) due to buccal (B) placement (Fig.2) with buccal thread exposure (red line), as compared to the same sized implant at #19 (Fig.3).

Immediate Re-Place or Not Next Xin Wei, DDS, PhD, MS 1st edition 12/23/2018, last revision 12/23/2018