Mosque-based Oral Health Intervention Using Solomon Design

This quasi-experimental study evaluates a mosque-based oral health education intervention ("Smile With Prophet", SWP) among adult male mosque attendees in Dhaka, Bangladesh, using a Solomon four-group design. A total of 142 participants were enrolled across two mosques (intervention and control). The analytical sample comprises 80 adult male attendees (≥18 years) allocated to four groups: intervention and control, each with pretest-posttest and posttest-only arms (n=20 per group). The SWP intervention consists of oral health education delivered through Friday sermons (khutbas), supported by educational leaflets and provision of miswak. Outcomes are measured at baseline and 3-week follow-up and include oral health knowledge (14-item questionnaire), self-reported tooth brushing practices (15-item questionnaire), and clinical plaque scores (Greene-Vermillion Simplified Oral Hygiene Index, reversed). The primary objective is to evaluate the effect of the intervention on knowledge and plaque scores. The secondary objective is to assess self-reported practice changes.

NCT Number	NCT07584512
Lead Sponsor	Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
Conditions	Dental Plaque Accumulation, Oral Hygiene Education
Enrollment	142 participants
Start Date	2022-09-23
Primary Completion	2022-10-28 (estimated)
Study Completion	2022-10-28 (estimated)
Updated on ClinicalTrials.gov	2026-05-14