Association between snoring and primary dental development and soft tissue profile in 3-year-old children Introduction: The aim was to study the association between snoring and development of occlusion, maxillary dental arch, and soft tissue profile in children with newly completed primary dentition. Methods: 32 (18 female, 14 male) parent-reported snorers (snoring ≥3 nights/week) and 19 (14 female, 6 male) non-snorers were recruited. Breathing preference (nose/mouth) was assessed at the mean age of 27 months by otorhinolaryngologist. At the mean age of 33 months, an orthodontic examination was performed, including sagittal relationship of 2 nd primary molars, overjet, overbite, and occurrence of crowding and lateral crossbite. Bite index was obtained to measure upper dental arch dimensions (inter-canine and inter-molar width, arch length). A profile photograph was obtained to measure facial convexity. Results: No significant differences were found between non-snorers and snorers in any of the studied occlusal characteristics or in measurements of upper dental arch dimensions. Snorers were found to have a more convex profile than non-snorers. Occurrence of mouth breathing was more common among snorers. Conclusions: Parent-reported snoring (≥3 nights/week) does not seem to be associated with an adverse effect on the early development of primary dentition, but snoring children seem to have more convex profile than non-snorers. Snoring is mild sign of sleep disordered breathing (SDB), and in the present study its short time lapse may not have had adequate functional impact on occlusion.