It would be best to share your thoughts with your dentist. We have really awesome materials these days and can make a crown look just like natural tooth. It just takes a little more effort to make it match. And it takes an artist as a technician. Most labs hire people familiar with digital technology and not necessarily artists. A better looking crown may cost a little more so be prepared to have that discussion with your dentist as well.
Of course you can. The lab made the crown too thick for one of the reasons. 1. Underpreparation of the tooth by the dentist. 2 .poor me choice of materials by the dentist and lab. They could have used a material that could be made thinner. 3.The dentist just does not understand why you are concerned. He made the temporary thin so he can make the permanent thin as well.
Nicotine and the other caustic chemical in cigarette smoke adversely affects blood supply to the tissues surrounding the implant. It is equivalent to putting a tourniquet around your leg when it is trying to heal. Use the patch adn give this implant the best chance to survive.
Of course you should talk to your dentist. Perhaps the crown has shifted slightly since it was completed and the space opened up. A new crown is the most likely solution to this problem. The flossing issue suggests that the seal is not quite adequate.
Quite often food will get caught under the flipper and seep below the gum line and cause irritation and inflammation around the implant healing post. Be sure to remove th flipper after every meal adn rinse vigorously with water. Use salt water rinses at night and a diluted solution of hydrogen peroxide. Make an appointment with your dentist if these symptoms persist.