article 3 controlled study 3 education 3 human 3 human experiment 3 questionnaire 3 randomized controlled trial Computer-Assisted Instruction 2 Female 2 Humans 2 Male 2 clinical assessment 2 comparative study 2 female 2 learning 2 major clinical study 2 male 2 procedures 2 teaching 2 Adult 1 Child 1 Cohort Studies 1 Crowns 1 Dental Plaque 1 Dental Plaque Index 1 E-learning 1 Education, Dental 1 Educational Measurement 1 Health Knowledge, Attitudes, Practice 1 Health Promotion 1