1. The lidocaine used in this study was supplied by Astra Pharmaceutical Products Inc., Worcester, Mass.
2. Local anesthesia and pain control in dental practice;Monheim,1957
3. Local anesthesia;Braun,1914
4. Applied pharmacology of local anesthetics;Bieter;Am. J. Surg.,1936
5. Duration of local anesthetics in relation to concentrations of procaine and epinephrine;Leser;Anesthesiology,1940