Implant explantation protocols?

Authors
Dear colleagues, I have placed an immediate Straumann bone level implant in position of upper left canine, restored it 4months later. The implant is quite deep. Almost a year later the patient still feels discomfort. I suspect bacterial accumulation at crown implant interface giving slight pressure and discomfort. I have tried bulking buccal porcelain and even switched to a provisional adjusting anatomy but symptoms persist. I am now thinking of explantation, allowing healing and reimplant 4months later at more crestal level. What is todays protocol on explanting a fully integrated implant. Kindly advise. Many thanks in advance.