Hello, according to your description, it should be typical pulpitis. Pulpitis has the following characteristics. You can observe it: cold and hot stimulation hurts. In the early stage, both cold and hot stimulation hurt. In the late stage, because bacteria produce gas in the pulp cavity, the pressure in the pulp cavity increases, and the teeth feel severe pain when they encounter thermal stimulation, but they will be relieved when they encounter cold stimulation, that is, hot pain will be relieved when they meet cold stimulation. The pain gets worse at night, and I often can't sleep at night because of toothache. The reasons are as follows: did you have dental caries in this painful tooth? If you have had dental caries before, it is very likely that the caries have invaded the dental pulp and led to pulpitis. In this case, it is necessary to remove the decayed part, perform root canal treatment, and then suggest that you make a crown, because the tooth tissue without dental pulp nutrition will be brittle, and if there is no artificial crown protection, it will easily split. If you have periodontitis instead of dental caries before (according to your description, your tooth was loose before, so it is suspected to be periodontitis), then it may be caused by retrograde infection. If you treat it, you should first open it, do root canal treatment, and then treat periodontal disease. I don't know how the doctor treated you after you went to the hospital. You had loose teeth and painful bite, and it may also be periapical periodontitis. However, periapical periodontitis usually occurs after pulpitis is not treated, but you can't rule out this situation. Periodontitis leads to periapical periodontitis, and finally it retrogrades to the pulp, so it may be a combined periodontal and pulp disease. Treatment as above. I suggest you go to a professional stomatological hospital immediately, take an X-ray film of the painful teeth, see if there is any apical lesion, and then perform root canal treatment or excision of apical lesion. Root canal therapy is a process of drilling a small hole in the biting surface of your teeth, then taking out the infected and necrotic pulp, filling it with a medical material-gutta percha tip, and then filling up the small hole. Then go to the prosthodontics department, grind your teeth a little and make an artificial crown cover. You can choose metal or porcelain according to your needs! Don't procrastinate any more. That's the case with oral pain. The more you procrastinate, the more it develops! Go to the hospital for examination. If it really hurts, take some fenbid, but it only relieves the pain and has no effect on the treatment of your illness! Still have to go to the hospital for treatment! Finally, I wish you a speedy recovery!