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The tooth is extracted with sectioning. Granulation tissue is removed from the furca. It is difficult to remove granulation tissue from the apical mesial socket. The buccal plate appears to be intact. The septum is flat (Fig.4,10a S). Osteotomy starts in the middle of the septum with the smallest pilot drill (1.2 mm) to avoid drill slipping (Fig.10b red circle).
Xin Wei, DDS, PhD, MS 1st edition 02/15/2015, last revision 02/16/2015