Would an implant to replace my extracted wisdom tooth be an option?

All four of my wisdom teeth emerged in good position. Due to an infection, my upper right wisdom tooth was extracted. Since the extraction, my 2nd molar has drifted. A crown was added two years later to address decay and to close the gap, but the tooth has drifted more. I have a cavity on the second molar, and I need to redo the crown. The dentist will try to close the gap and has recommended a night retainer (I don't think I'll wear it). Would an implant to replace my wisdom tooth be an option?