After teeth whitening, post-care for your newly whitened teeth include:
Avoiding dark-colored foods and beverages as well as smoking for at least a week after whitening. Whenever possible, sip dark-colored beverages with a straw.
Practicing good oral hygiene, brushing and flossing after meals and before bedtime.
Follow-up or maintenance whitening when color shades start to fade.
Tooth bleaching can cause a temporary increase in tooth sensitivity to temperature, pressure and touch. Whitening sensitivity normally lasts no longer than two days, but in some cases whitening sensitivity may persist up to a month. If so, toothpaste containing potassium nitrate for sensitive teeth may be recommended for use.
If there is whitening sensitivity in teeth post to a tooth whitening treatment, there are several ways to reduce whitening sensitivity in teeth:
Avoid acidic and citrus drinks and spicy foods as well as extreme hot or cold temperature foods.