How much lidocaine should be injected for tooth pain?

Dental school...: (you will learn the answers to this in dental school). The reality is that Lidocaine is not the solution for dental pain, it is a means of making you numb so treatment can be performed and fix your teeth. Depending on which treatment you receive, your weight, and your specific pain levels, your dentist can discuss this at your appointment.

Depends on situation: If your tooth is in pain then it will take more anesthetic to get it numb than if we are working on a tooth with minor decay. Also, lower teeth usually take more anesthetic to get profound anesthesia than upper teeth. For ordinary dental care of an upper tooth one carpule (1.8ml) should suffice. For a lower it usually takes two. If it is a toothache situation it can take as many as 4 carpules.

Enough to stop it: There is a maximum of any drug that should be used for a patient in a given time. The amount of 2% Lidocaine for instance is over 20-25 ml in a short time. Generally, to numb a tooth only 2-4 ml is needed. Different anesthetic drugs have different durations, effectiveness, and maximum doses. Your doctor will know which is right for each drug and keep within safe guidelines at all times.

Depends on location: Usually 1or 2 shots is sufficient. Upper jaw is easier because bone is less dense lower jaw has thicker, harder bone so a block injection is needed where the whole right or left side is numb-lip, tongue and teeth so sometimes it will take 2-3 for the block and 1-2 near the tooth that needs work.

Depends: Depends on your size and age and clinical situation. Good information here: https://quizlet.com/5346990/dose-calculations-for-local-anesthetic-solutions-dental-hygiene-flash-cards/

Dose Calculation: 2% lidocaine = 20 mg/ ml 1 carpule = 1.8ml amount of LA in 1 carpule. For local anesthesia average is 2 carpules. However, dental anesthetics should be used only for temporary pain relief.