What would be the cost of a molar tooth implant?

A dental implant is an excellent solution for missing teeth. If you will loose that tooth, then yes, a dental implant can be considered. A dental implants cost $990 US in Mexico. HJope this helps

An Endodontist specializes in root canal therapy.  Have one evaluate the tooth before any decisions, it may be salvagble.The cost of an inplant has several factors.  First is it an immediate implant or are you extracting and doing a bonegraft?  Are you doing an immediate placement of a Max implant to speed the process if possible.What type of implant and implant Abutment are you doing and what type of crown.You may spend anywhere fron $3500 for entire process up to $8500. This is not about just price but what procedures.Do you want a generic or high end implant.Does the dentist redo for free if poor healing?There is usually more pain with extraction then an implant placement.  Time is also an important consideration.Depending on your age recent research is showing that fixed bridgework and implants are equal in survivability.Find a dentist you trust and discuss all alternatives

You have not made it clear whether the tooth in question is savable by re-treatment of the Root canal, placement of a post and core and then a crown...or if it is hopeless.  My feelings are that with good bone and good root canal re-treatment the first choice is to keep the tooth.  Otherwise removal is in order. In most offices fees for re-treating the root canal, the post and the crown will be slightly less than extraction, bone grafting if needed, the implant, implant post and crown.  However...saving the tooth should have as high a success rate as implants  which is much above 90%.  Get a sound opinion by your dentist or if need be by a root canal specialist (endodontist).