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As expected, bone density is low at #31 during osteotomy. Underprep in depth (close to IAN) and diameter is done with satisfactory torque (~15 Ncm). What was not expected intraop is having to use one carpule of Septocaine in addition to Lidocaine. Postop PA shows why (closeness of the implant to IAN, Fig.1). The guide helps slightly subcrestal placement of the implant except lingual (equicrestal).
Xin Wei, DDS, PhD, MS 1st edition 07/14/2020, last revision 07/14/2020