Automatic toothbrush vs. manual: which cleans braces better?

This study tested whether a U-shaped automatic toothbrush (Autobrush) removes plaque better than a regular manual toothbrush in teenagers with braces. Forty healthy teens aged 12-15 brushed with both types on different days, and plaque levels were measured before and after. The goal was to see which method works best for keeping teeth clean during orthodontic treatment.