[Evaluation of the efficacy of 2 toothbrushing methods by students in grades 7 and 8].
D000293:Adolescent; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008297:Male; D009910:Oral Hygiene; D014099:Toothbrushing / Q000379:methods*
Ocena skuteczności oczyszczania zebów dwiema metodami u uczniów klas VII i VIII.