The first intraop PA shows that 5x20 mm tap penetrates the sinus floor (Fig.3 ^).  The osteotomy is further enlarged until 7x17 mm tap with stability (Fig.4); the corresponding implant should penetrate the sinus floor further for primary stability.

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Xin Wei, DDS, PhD, MS 1st edition 04/24/2013, last revision 01/19/2018