A follow-up study of former participants in a controlled oral hygiene study.
D000328:Adult; D003728:Dental Calculus / Q000517:prevention & control*; D003777:Dental Prophylaxis; D005500:Follow-Up Studies; D005891:Gingivitis / Q000517:prevention & control*; D006267:Health Education, Dental; D006801:Humans; D009909:Oral Health; D009910:Oral Hygiene; D013997:Time Factors; D014099:Toothbrushing