Oral hygiene and dental status as factors related to asthma in high school and college students.

Objective: Considering that oral microbiota might modulate immune responses, we explored if customary oral care procedures might influence immune-driven diseases such as asthma.

Methods: This was a retrospective, cross-sectional analysis of responses to a self-completion medical questionnaire applied to subjects entering into college and high school programs during 2006-2011.

Results: Responses from 329 780 students aged 14-24 years (97.