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Finally a 6x14 mm tissue-level implant is placed with low insertion torque (30 Ncm) because of limited native bone height (Fig.5). Perfuse hemorrhage also contributes to surgical difficulty. Red line: superior border of the Inferior Alveolar Canal. After placement of bone graft (Fig.6 *) and a short abutment (5x3 mm, A), an immediate provisional is fabricated to keep the graft in the sockets. In 3 months, the bone graft and native bone become less distinguished (Fig.7, 7'). Impression is postponed because of local poor oral hygiene around the provisional.
Xin Wei, DDS, PhD, MS 1st edition 04/13/2017, last revision 01/19/2018