Ablating Apparatus Particularly Useful for Removal of Dental Periapical Lesions

摘要

Apparatus for removing a dental periapical lesion at an apex of a root canal in a tooth, includes: an ablating device sized and constructed for (a) introduction through a cavity in the tooth into the root canal; (b) movement therethrough to protrude through the apex into contact with the dental periapical lesion; and (c) rotation while in contact with the dental periapical lesion in order to remove same by ablation. In some described embodiments, the ablating device includes a sleeve and a filament moveable therein to define a protruding curved end to be brought into contact with the dental periapical lesion for ablation thereof by rotation of the filament. In another described embodiment, the ablating device includes a sleeve and a filament within the sleeve and secured at one end to one end of the sleeve, the sleeve being formed with a plurality of slits such that, displacing the sleeve towards its secured end, produces outwardly-bowed surfaces along the slits effective to ablate the dental periapical lesion tissues upon rotation of the sleeve.