Troubleshooting My AirFloss nozzle split after a short period of use If your Philips Sonicare AirFloss splits, your AirFloss is most often not broken. Discover how to easily prevent this from happening. Too much pressure Splitting of the nozzles can occur if you use too much pressure on the nozzle by pressing too hard on your teeth. Try placing the nozzle tip between the teeth and apply gentle pressure. Tip: If the nozzle bends while in use, you are exerting too much pressure. You may also want to close your lips slightly over the nozzle when it is in place between your teeth, to avoid splashing.