Is this implant failing?

Movement and pain suggest failure; remove it and graft.

If an implant has movement and pain on that movement then its not failing, it has already failed. Montanas advice is spot on - the longer you leave it the more bone loss will occur.

If it is moving and there is pain I would consider this a failed or a failing implant and would remove it ASAP.

It is failing. Remove it, Graft some bone, or use Bicon Short implant next time.

Can i place another short implant at same time

An unfortunate outcome: a seemingly well placed implant failing. It happens to all of us; how the failure is managed is the true measure of a surgeon. The most likely scenario has already been stated by previous responses: pain on challenge is nearly alelways a sign of failure. Same for observable mobility. For whatever reason, this implant has healed with a fibrous tissue interface. Removal is warranted as soon as feasible. Degranulate the osteotomy thoroughly (there will likely be a ring of connective tissue, and regraft for a later replacement, or place the next larger diameter implant: the bone will be spongy and should accept a larger implant without having to use a larger drill. Final torque should not exceed 35-40 n-cm; higher values can lead to pressure necrosis. Evaluate your technique in an attempt to determine if this was a procedural failure or a statistical failure. The proximity of the sinus is an interesting feature, but not knowing how it was managed makes it just that: an interesting feature. IMHO, I personally prefer lateral approaches over crestal approaches for sinus augmentation - that’s just me. Always incorporate antibiotics (metronidazole) into your graft material. Prayers and best of outcomes to you and your patient.

Clinical symptoms and x ray shows failing implant which has to be explanted under AB cocerage but the upper border of the x ray is missing.Ä°s the radiolucency an infected bone or is it a lobe of infected sinus.The lesion also shows honey comb pattern so please send the curettage material to a pathologist .if sinus perforation occurs I am sure you will do the necessary manipulation. Good Luck

A loose healing abutment can mimic a failing implant. Remove the healing abutment and evaluate the stability of the implant by placing the insert mount into the implant body. A wider implant could be placed immediately upon the removal of the loose implant albeit with a higher risk of failure .......or not.