The commonly used anesthetics for clinical tooth extraction are lidocaine, ativan and bupivanine. Different anesthetics used in tooth extraction, the disappearance time of drug effect is also different, generally lidocaine about 1.5 ~ 2 hours disappear, ativan about 1 hour disappear, dicaine about 2 hours disappear.
1. Lidocaine: it is the most commonly used local anesthetics in clinic, with strong tissue penetration and diffusibility, it can also be used as surface anesthesia, and the general anesthesia maintenance time is about 1.5~2 hours.
2. Articaine: it has strong tissue penetration and diffusibility, the drug is effective in 2~3 minutes, and the maintenance time after anesthesia can last for 1 hour, applicable to adults and children above 4 years old.
3. Bupivacaine: with strong penetration, it is mainly used for surface anesthesia in clinic, because it is generally more toxic, attention should be paid to the dosage when doing surface anesthesia, and the duration of anesthesia is about 2 hours.
Those who need anesthesia for tooth extraction should go to a professional oral medical institution, and the oral surgeon should choose the appropriate anesthetic and anesthesia method according to the part of the affected tooth and the patient’s physical condition, in order to achieve better anesthesia effect.