Hello, I would recommend to request a new set of trays. If they are too loose material could be coming out thus decreasing efficacy. Many professional trays can be made in the dental office.
It is common to sometimes have this pain after a root canal procedure. It may be due to local inflammation around the tooth. I would recommend to check in with your dental provider.
I would recommend to get a consultation with an endodontist. He or she can do further testing to determine the best treatment option for the tooth in question. Placing a deep restoration that is in close proximity to the nerve may alsoleave a lot more variables than may need to be readdressed in the future. However, are many instances when in is acceptable to place deep restorations. All depends on the particular symptoms and situation.
This is likely the root. Sounds like the post broke off with the crown attached to it. Make an appointment with a local dentist to see what your best treatment options are.
This is a common occurrence in PFM crowns. The crown could have been designed to be slightly above the gumline, thus allowing you to notice this line of demarcation. Many dental professionals sometimes prefer this design based on the individual patient circumstances.
