Scientists track germs in root canals during standard dental care

This study looked at how the types of bacteria in an infected root canal change during routine dental treatment. Twenty-four adults with a chronic tooth abscess received standard root canal therapy using one of two bleach solutions (5.25% or 3% sodium hypochlorite) followed by a medicated filling (calcium hydroxide). Researchers took samples before, during, and after treatment to analyze the bacterial community. The goal was simply to understand the bacterial changes, not to test a new treatment.