Dentist here. Probably late to the party on the OP's question, but my first question would be if the tooth is still viable. You might be able to keep the tooth with a new crown. The on again / off again pain is concerning and it may need another root canal treatment (called a retreat). If your dentist has figured out that the tooth has a root fracture or that there is just constant infection surrounding the tooth, then it may need to be taken out and replaced.
I usually break down 3 options to replace teeth in my office.
#1, and the least expensive, is a removable partial denture. It's a plastic piece that fits into your mouth and hooks to other teeth to replace the missing one. Newer flexible partial dentures are much more aesthetic than granpa's old metal jig he put in for church. The benefit is that it's relatively cheap and can replace mulitple missing teeth. The cons are that you have to remove and clean it daily and leave it out overnight.
#2 is a Fixed Partial Denture (bridge). In most cases, the teeth adjacent to the missing tooth are prepared just like crowns and then a solid three tooth unit is glued in. It looks more natural than a removable partial and is glued into place. It can be a PIA because you have to floss underneath the bridge and use something called a floss threader to feed the floss underneath. It is more costly than a removable partial, but mostly less expensive than an implant. It also can be done to completion in 4-6 weeks instead of the long healing process that may need to be in place for implant treatment.
#3 is the dental implant. It's by far the most natural looking treatment and allows you to brush/floss like normal. Most often, it is a long process. Extraction of the tooth (sometimes with grafting), followed by 3 months of healing then placement of the intraosseous implant (into the bone) followed by another 3 months of healing. Finally, the dentist will take an impression and have the abutment/crown fabricated that will be the part that sticks out from the gingiva. Yes, there are a lot of ways to shorten the time to finish, but they can be risky. Some providers like to place the implant the same day as extraction, but healing can be unpredictable and in an aesthetic area that can be a risk. Implants are often more expensive than the other treatments because surgical complications can be plentiful.
Full disclosure, I'm a US dentist who owns a practice. My POV is that doing minor procedures overseas (mexico, turkey and thailand have been the most common) is super risky because you have almost no recourse if things go poorly. Most of those places count on the fact that the dental tourist will never be back. If you decide to go the dental tourism route, make damn sure you vet the provider/clinic/doctor thoroughly. I've had two rather large cases come back from Mexico with a mouth full of junk that started immediately failing and needed to be replaced.
Also,
@the moops, the dentists hate you too.
