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Fig.3: The osteotomies at #14 (immediate) and 15 (healed site) are going to change to red lines. The parallel pin at #15 has penetrated the sinus floor. The depth should be controlled more tightly (around 5.5 mm).
Xin Wei, DDS, PhD, MS 1st edition 10/31/2015, last revision 10/31/2015