Fig.2 (CBCT sagittal section): Design of implants at the sites of #2-4. Set implant spacer 2.5 mm from #5, 6 mm between 3 and 4. Take PA after insertion of parallel pins.
Trephine Bur
Xin Wei, DDS, PhD, MS 1st edition 08/23/2015, last revision 08/23/2015