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Most people are candidates for tooth whitening, but again, each situation is unique and it’s best to contact your dental professional.

Yes, many studies have proven that tooth whitening is safe. You can protect your tooth enamel by using calcium sulfate and fluoride.

Products developed from carbamide peroxide, hydrogen peroxide, and urea (substances found in every human cell), should be used cautiously to alleviate concern. Those who have issues are the ones who don’t follow instructions and overuse the products for months or years.

Sensitivity from tooth whitening is always transient. That means if there is any sensitivity caused by the whitening, it goes away within one to two days after the treatment, and the patient returns to the state of sensitivity he or she had prior to starting the whitening process.

Typically you can expect whitening to last from six months to two years, although some studies report results lasting up to ten years. Avoiding red wine, coffee, and smoking — all of which can cause staining — helps preserve the results.

Whitening toothpastes typically only clean surface stains and don’t actually change the color of the teeth. There may be some visible results, but the teeth aren’t actually being whitened.

Tooth whitening has little or no effect on restorative materials such as porcelain or crowns, but it may temporarily reduce the bond strength between enamel and composite restorations. This is why it’s a good idea to check with your dental professional before beginning any course of tooth whitening.