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The tooth #15 was replaced by an implant (Fig.2). Lateral window sinus graft was tried without success in preparation for $14 implant placeement. Recently the partial was lost. Two missing teeth are going to be restored by implants with sinus lift in the crestal approach. Although the bone height is limited (2 mm), the implant at the site of #14 is able to obtain primary stability by engaging into the sides of the sinus floor (arrowheads).
Xin Wei, DDS, PhD, MS 1st edition 05/17/2015, last revision 05/18/2015