Additional file 4: of Study protocol of a randomized controlled trial to test the effect of a smartphone application on oral-health behavior and oral hygiene in adolescents with fixed orthodontic appliances Janneke Scheerman Berno van Meijel Pepijn van Empelen Gem Kramer Gijsbert Verrips Amir Pakpour Matheus Van den Braak Cor van Loveren 10.6084/m9.figshare.5867190.v1 https://springernature.figshare.com/articles/journal_contribution/Additional_file_4_of_Study_protocol_of_a_randomized_controlled_trial_to_test_the_effect_of_a_smartphone_application_on_oral-health_behavior_and_oral_hygiene_in_adolescents_with_fixed_orthodontic_appliances/5867190 Questionnaire part III. (DOCX 25 kb) 2018-02-07 05:00:00 Study protocol Behavioral intervention App M-health Prevention Oral health promotion Oral health behavior Oral hygiene