| 摘要 |
An arrangement, for use in whitening a pa-tient's teeth includes an arched surface (15) and an array of light-generating devices (56, 57), for example, light emitting diodes positioned on the arched surface. The light-generat-ing devices are arranged to form a relatively uniform field of light in a particular range of wavelengths, and further ar-ranged to focus the generated light in an overlapping man-ner onto a patient's teeth (71, 73) when the mouthpiece is properly positioned relative to the patient's face. The proper positioning is aided by a number of light sources, in the visi-ble range, that shine on the patient's face in a predetermined manner when the mouthpiece is properly positioned. To re-move whatever heat is generated at the surface of the pa-tient's teeth in the course of the procedure, the mouthpiece includes air passages between the light emitting devices, and a fan that draws air away from the patient's face.
|
