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Removal of the mesial curved root tip turns out to be difficult, requiring an early incision on the ridge (Fig.2 R) of #19 and bone removal mesial to the mesial socket (M). The position of the osteotomy at the latter site is aided by an implant spacer of 4 mm.
Xin Wei, DDS, PhD, MS 1st edition 05/07/2015, last revision 05/08/2015