1. Before the cold light whitening operation, the dentist should have an oral examination and communicate with the whitening patients. People below 16, pregnant women and patients with severe periodontal disease are not suitable for this kind of tooth whitening.

2. Compare and record the color of teeth before whitening, and take photos for archiving.

3, whitening patients and operators wear goggles.

4. Mix the polished sand with a small amount of water and simply treat the tooth surface. After the treatment, make sure that the patient dries the tooth surface after gargling.

5. Put the moisture-proof cotton plug into the inner side of the lip, apply lip oil and cover it with paper.

6, put the mouth opener in the patient's mouth, to ensure that the patient without discomfort.

7. Apply photo-curing resin to the gum and cover it 0.5 mm below the gum, and irradiate it with photo-curing lamp for about 3 seconds.

8, the overall electro luminescent head, lamp holder should be 90 degrees perpendicular to the tooth surface, just contact the mouth opener.

9. Mix the hydrogen peroxide and whitening powder into a paste (note: the consistency is subject to the whitening agent dripping without a brush, and it should not be too thick), and apply the prepared whitening agent to the dried teeth above *** 16, with a coating thickness of about 2-3 mm..

10. Press the start button to start the first 8-minute treatment. After that, the machine will automatically stop, and then use a strong straw to suck the whitening agent off the teeth. Wipe the residual whitening agent on the teeth with a dry cotton ball if necessary, and do not rinse with water at this time.

1 1. Repeat step 8~ 10 twice for the second and third 8-minute courses.

12. If the patient has dentin hypersensitivity or pain, the whitening operation should be stopped.