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1. Dental Anesthetics 

   is a drug used to loss a local sensation, including pain temporary or a drug used to cause lack of feeling or awareness, dulling pain to permit surgery and other painful procedures.
2. Local anesthetic agents in dentistry Products Its half-life in the body is about 1.5–2 hours. Other local anesthetic agents in current use include Lidocaine, Septocaine or Carbocaine and more..