A decayed tooth in front of the wisdom tooth requires either filling treatment or root canal treatment depending on the severity of the decay. 1. Filling treatment, if the symptoms of tooth decay are not serious, only a slight cavity, then you can choose to carry out filling treatment, usually can be filled with resin. 2. Root canal treatment, if the tooth rot is more serious, has damaged the pulp, the nerve sensitivity and pain and other symptoms, you can promptly carry out root canal treatment, root canal treatment can make the nerve inactivation, pain relief. Normally, you need to observe your teeth more often, and visit your doctor regularly to review and clean your teeth. If the root canal treatment has been carried out can choose to carry out dental crown restoration.