Abstract: A breathing assistance apparatus comprises an oral appliance, wherein the oral appliance has at least an uppermost splint adapted to engage with a set of maxillary teeth. The apparatus also comprises a strapless positive airway pressure nasal mask and a plurality of ferromagnetic members provided on the oral appliance and nasal mask. The ferromagnetic members comprise one or more magnets such that the nasal mask and oral appliance are attracted to each other when the apparatus is being worn by a user.