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Primary stability is derived mainly from the implant body engagement into the septum (Fig.5 coronal section through the septum). If bone density in the septum is high, a smaller implant may be appropriate (Fig.6: 6.4x8 mm). Minor sinus lift is required (Fig.5' arrows).
Xin Wei, DDS, PhD, MS 1st edition 12/28/2014, last revision 12/28/2014