Tooth pain after knocking on a stone for 16 days may be caused by dental concussion, cryptocleidosis, pulp necrosis, etc. Different causes, different treatments. 1. Dental concussion: if you have a toothache after knocking a stone, check the periodontal condition of the tooth, if it is a dental concussion, you need to observe it for the time being, and if the pain is severe, you can take ibuprofen extended-release capsules and other medicines orally to relieve the pain. 2. Cryptic fissure: After checking and finding out that there is a cryptic fissure, the cryptic fissure line up to the dentin can be done firstly to adjust the jaw or resin restoration, if the cryptic fissure reaches the pulp, the pulp inflammation occurs, then it is necessary to carry on the root canal treatment and then the crown restoration. If the fissure reaches the root of the tooth, it needs to be extracted. 3. Pulp necrosis: A tooth that has been in pain for 16 days after hitting a stone may cause pulpal lesions, which will require root canal treatment. Tooth knocked to stone pain, to go to the hospital in time for oral examination and filming, for targeted treatment. The above medication is subject to medical advice.