The cost of treatment for a rotted half of a second molar generally ranges from $500 to $10,000, with some variations depending on the type of repair, supplies, hospital, and region. The exact cost of treatment for a second molar rotted in half is related to the degree of damage to the tooth, the type of repair, the materials used for the repair, the level of the hospital, and regional differences. If the tooth damage has not injured the pulp nerve, you need to remove the decayed tooth and then carry out filling treatment, if the injury to the pulp nerve, you need to do root canal treatment, and then crown restoration protection, the price will increase. If the tooth is rotten to the root bifurcation, the tooth has no value of retention, it needs to be extracted, and then implant restoration and other treatments, the cost will also increase Oh. In addition, the above materials for restoring teeth include a lot of types, different materials, manufacturers, the influence of the region leads to different costs, the specific price will be different because of different choices. Plus other costs, the total cost of treatment ranges from $500 to $10,000. Consult your local hospital for specific costs.