Hi. I had a molar filled last Tuesday. When the dentist gave me the shot I felt a shock go through my tongue. It has been numb on the left side and underneath since. No pain, just numb. I did call the dentist back on Wednesday and he thinks it was nerve damage and not to worry, it will heal although it may be days or weeks. How long does it typically take for a nerve to heal and is there anything I can do to speed up the healing?