| 摘要 |
In the present invention, there is disclosed a method of and apparatus for the whiting of teeth wherein the apparatus includes a source (12) of oxidizing gas and a handpiece (16) for delivering the gas to a tooth (40). A cup (34) attached to the handpiece (16) is provided for receiving the gas and exposing a selected area of the tooth (40) to the action of gas. The cup (34) includes a resilient edge (44) for sealably engaging the edge (44) and the tooth (40) around the selected area to prevent escape of a gas. |
