You should attempt the retreatment of the root canal. Nothing is better than having a natural tooth let alone avoid the surgery and cost of an implant.
If holding the shade tab up next to the veneer doesn't answer your question then use a shade gun. Many dentists like myself have a digital shade matching gun. It will test the shade of porcelain and measure shade in teeth.
... is Invisalign. You would have to be evaluated by a dentist. Porcelain veneers permanently alter your tooth structure and orthodontic treatment does not. Consider these two options carefully.
Yes, they vary. In my office, a simple implant to replace a single tooth costs $2400 from start to finish. Be aware that additional fees will apply when extraction, bone graft preservation or other work is needed.
wear your bruxism splint religiously while you sleep. In the unlikely event a veneer breaks or comes uncemented, you and your dentist can deal with it. Keep in mind, you will need a new bruxism splint after the veneers are cemented on.
