This case involves a 75 year old male patient. The question is related to the implant in #16 region. The CBCT showed 5.8 mm bone height from the sinus floor to the bone crest and 8.4 mm bone width bucco-palatally. I placed an ADIN 4.2x10mm implant in the #16 region. An immediate post-operative intraoral periapical radiograph has also been posted.
Initially I used the drills to prepare the osteotomy to the depth of 5mm followed by osteotomes to perform a crestal sinus lift without using any bone graft.
The sinus is not perforated as I confirmed by Valsalva maneuver. Patient was prescribed analgesics and antibiotics for 5 days and is asymptomatic after 1 week of implant placement.
I have the following questions:
1. How much bone height is the minimum required for a crestal sinus lift ? (Literature that I have read states 5mm. Would like to have clinical opinion of colleagues.)
2. How many millimeters can we lift the sinus using crestal sinus lift technique with osteotomes ?
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