A large study of risky pre-teen behavior provided an opportunity to examine self-reported toothbrushing frequency for stability over time and adequacy. 1115 metropolitan African-American children at risk for violence and drug use self-reported toothbrushing frequency in at least one of five measurement points from 5th to 8th grade as part of a larger study. Longitudinal data were available for 815 students. 81% reported mainly twice daily, 8% reported mainly once daily, 10% changed over time, and 1% were consistently less than once daily. Overall, the children reported once or twice daily toothbrushing frequency, stable between 5th and 8th grades. A minority of children showed low or inconsistent frequencies and these results may indicate an opportunity for intervention to improve habits.