Osteotomy continues with drills until 4.1x14 mm, followed by insertion of E4 (2.4/3.7 mm, for trajectory confirmation) at #14, while osteotomy goes on until E3 (1.7/3.1 mm) at #15 (Fig.4).

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Xin Wei, DDS, PhD, MS 1st edition 07/31/2017, last revision 06/12/2019