Anesthesia is a very common operation in dental practice. The pain during anesthesia is sometimes very severe and is one of the main reasons why many people are afraid to talk about “teeth”. So how to do to minimize the pain when anesthesia? After years of knowledge, summarized as follows: 1, choose a fine needle, into the needle speed should be fast. No need to explain. 2, choose a fast-acting anesthetic, such as ativan hydrochloride. No explanation is needed. 3, when injecting anesthetic can not be too fast. A 1.7 ml of anesthetic will take at least 1 minute. 4, the injection site as close as possible to the vestibular groove, where the mucosa and connective tissue is loose, and the distension and pain is small. Generally, the mucosa of the palate is thick and there is no submucosa between it and the periosteum, so direct injection will cause distension and severe pain from the anesthetic. You can inject 1ml of anesthetic in the relative position of the buccal side first, and then inject in the palatal side after 5 minutes, the pain will be much, much less. 5, the lower alveolar nerve block anesthesia, first inject a small amount of anesthetic at the entry point, and then after 1 minute into the needle. 6, it is best to make the anesthetic temperature close to body temperature. Never inject anesthetic just taken out of the refrigerator. More humane care, more attention to detail. There is a lot to learn about anesthesia. Keep up the good work and let painlessness into daily dental treatment.