Know the Reasons Why Dental Extraction Becomes Necessary Having a tooth removal or dental extraction in adult age becomes sometimes important. However, permanent teeth are meant to last for whole life, but there are various reasons why dental extractions Snellville may be required. A very common reason includes a badly damaged tooth due to decay or trauma, needs to be repaired. Other reasons involve: Infection If tooth damage or decay spreads to the pulp – the center of the tooth comprising blood vessels and nerves – bacteria in the mouth that can result in infection. However, this can be fixed with root canal therapy, but if the infection is severe, it requires infection for preventing the spread of infection.