The cost of root canal treatment depends on the condition of tooth and the severity of infection involved. Some of the factors that decide the root canal treatment cost price are:

The cost is higher for back teeth compared to front teeth as the posterior teeth have more number of roots and root canals.
If the root canal treatment is performed by an endodontist who is a root canal specialist, the cost can increase compared to treatment done by a general dentist.
Technology and materials used in treating the infected tooth for root canal treatment is also a deciding factor like rotary endodontic systems, Protaper Files / Guttapercha etc.

Laser assisted Root Canal Treatment ensures better disinfection and microbe free environment. CT guided Root Canal Treatment gives 3D view of the tooth, along with any accessory root canals and the extent of infection in the bone as well. Microscopic endodontics increases the effectiveness and outcome of the root canal procedure as precision magnification of the tooth up to 3x to 15x is enabled. Such techniques when involved in root canal treatment, the charge of RCT may increase.
After root canal treatment, if there is an inadequate amount of sound tooth remaining, a post and core build up might be necessary. It helps to achieve better retention of crown, and furthermore to redistribute stresses down onto the root, thereby reducing the risk of fracture. In such cases additional costs can incur.

Generally, the root canal treatment cost price at FMS Dental starts from Rs. 4500/- and depending on the clinical condition of tooth and add-on procedures involved, the cost may vary.