Abstract: A dental floss device with a guide post for removing food debris and dental plaque during orthodontic treatment. The guide post includes a guide post of a uniform small diameter and a floss bonded thereto. The guide post has a semi-spherical tip for sensing position to ease insertion of the guide post between the clearance which is formed by teeth and the orthodontic appliance. The dental floss device is formed by injection molding.

Abstract: A dental flosser suitable to be used with a fixed orthodontic appliance, provided for a wearer to clean food debris and dental plaque so as to prevent an orthodontic appliance wearer from getting proximal caries and periodontal disease during orthodontic treatment period, the dental flosser including a hold portion, a floss portion and two floss supports wherein the floss supports are outwardly curved and more slender than prior art devices and the hold portion can be held on both sides so that the floss supports can be inserted into the narrow clearance between the orthodontic wire and teeth, allowing the connected floss to intrude into the adjacent surfaces of the teeth and by means of the outwardly curved floss supports, the operating space in the narrow clearance is enlarged so that the floss can fully scrape off the food debris and dental plaque on the teeth.