Upon examination, he feels that the tooth #2 is mobile, requiring more urgent care (Fig.2). At either site, bone height is limited. Sinus lift is expected with PRF. Place an implant that just passes the sinus floor for stability, e.g., 5-6x10 mm at #2 (Fig.3), but not too long into the sinus.
Xin Wei, DDS, PhD, MS 1st edition 07/04/2018, last revision 07/04/2018