PLATOON: Premature Loss of bAby Teeth and its impact On Orthodontic Need - protocol.

Objective: To investigate the impact of premature extraction of primary teeth (PEPT) on orthodontic treatment need in a cohort of children participating in the Born in Bradford (BiB) longitudinal birth cohort.

Design: Observational, cross-sectional cohort.

Participants: We aim to recruit 1000 children aged 7-11 years: 500 with a history of PEPT and 500 matched non-PEPT controls.