To reduce patient's expense, two implants are to be placed in narrow mesiodistal space (#30 and 31) free hand.  Time is spent to determine where to place 4 mm tissue punch.  When initial osteotomy is established (Fig.1), effort is paid to deciding whether the osteotomy is close to the Inferior Alveolar Canal (Fig.2 red dashed line).  Attention is not paid to spacing!

Drawbacks of Free Hand Surgery Next

Xin Wei, DDS, PhD, MS 1st edition 04/20/2018, last revision 09/12/2018