| 摘要 |
1. Technical Result Improvement of the process of whitening. 2. Essence An apparatus includes a source of oxidizing gas 12 and a handpiece 16 for delivering the gas to a tooth 40. A cup 34 attached to the handpiece is provided for receiving the gas and exposing a selected area of the tooth to the gas. The cup includes a resilient edge for sealing the edge for engaging the tooth around the selected area to prevent escape of a gas. 3. Field of Application Stomatology. |
