Dental Public Health in Action This paper presents the experiences of Betsi Cadwaladr University Health Board, North Wales, UK in improving facilities, access and quality of care for bariatric dental patients. It includes the multi-stakeholder audit of existing practice which informed those improvements. Public health competencies illustrated: needs assessment; development and implementation of oral health strategies; oral health improvement; development of clinical pathways; improving patient safety; clinical and public engagement; addressing inequalities. Key words: bariatric dental patients, general dental practice, community dental service, Wales, UK