7 Ways to Make Over Your Smile
Best for: Those who want instant results and who have sensitive teeth. "Because we cover the areas where the nerves might be exposed, patients are much less likely to experience sensitivity than with other whitening options," says Jeff Golub-Evans, DDS, in New York City, who practices cosmetic dentistry.
Does it work? Yes. It may be slightly uncomfortable to sit in the chair for an hour with your mouth held open, but the procedure can remove about 10 years' worth of staining, says Golub-Evans. As with all whitening treatments, you can't eat or drink anything deeply pigmented, such as berries, soy sauce, red wine, or coffee, for at least 48 hours. "The bleaching agent opens pores in the teeth, which makes them ultra-absorbent to color," says Pia Lieb, DDS, clinical assistant professor at New York University College of Dentistry. Results last a couple of years if you brush and floss regularly.
Cost: $300 to $600.
Best for: Maintenance after an in-office whitening treatment.
Does it work? Yes. Because the trays are made specifically to fit your mouth, the peroxide spreads evenly on teeth. But beware of overbleaching: Peroxide can dissolve the calcium in tooth enamel (the outer layer), which exposes the nerves, resulting in sensitivity. Calcium depletion can also cause decay, says Fox. Though teeth can be remineralized with a paste or a fluoride treatment, you shouldn't wear the trays more than four to six times per year.
Cost: $400 to $800.
Best for: People with mild staining and plenty of tooth enamel. "Don't use these kits if you grind your teeth, have recessed gums, or think you might have a cavity, because the peroxide has a propensity to seep into sensitive areas caused by recession or grinding," says Michael Apa, DDS, founder of New York University's Aesthetics Dental Society.
Do they work? Not as well as in-office bleaching. Drugstore whitening kits simply aren't able to achieve the kind of bleaching you can get in the dentist's office or with trays, says Robert Reiss, DDS, who has a private practice in New York City. At-home kits will lighten teeth, but you have to be committed and patient; it can take several weeks or more of daily applications to see results, and your teeth may become temporarily sensitive in the process. A common complaint is that the strips are either too narrow and short to fit large teeth, so they don't bleach evenly, or they're so big that they irritate the gums, says Lieb.
Best for: Small fixes.
Does it work? Yes, and very well. Though the composite material can gradually stain, bonding can be done in one office visit, and it's less expensive and invasive than other fixes like veneers. It lasts from five to 15 years, depending on the quality of the dentist's work and whether or not you're a grinder.
Cost: $200 to $500 per tooth, depending on the complexity of the restoration.
Best for: Improving crooked, widely gapped, or badly stained teeth. With veneers, a dentist can change the size, shape, color, and position of teeth in a few office visits.
Does it work? Yes. Veneers can make a dramatic difference in a smile, last about 20 years, don't stain or chip, and require no maintenance.
Cost: $1,000 to $2,000 per tooth.
Best for: Straightening teeth without a mouthful of metal. Invisaligns aren't recommended for people with extremely crooked teeth or a severe bite problem; in those cases, traditional braces are more effective.
Do they work? Yes. It can take anywhere from three months to two years to get final results (and longer if you aren't consistent about wearing your aligners). But because the aligners are removable, it's easier to eat, floss, and brush than with metal braces.
Best for: Those with healthy gums and enough bone to support the implant. If a tooth has been missing for a long time or if you have gum disease, a bone graft may be required.
Does it work? Extremely well. "Implants are natural-looking and can last a lifetime," says Kim Harms, DDS, a consumer adviser for the American Dental Association. They won't shift or move, and you don't have to drill adjacent, healthy teeth in order to add crowns to make a bridge. Getting an implant is a surgical procedure and requires a few days of recovery time.
Cost: $1,000 to $4,000 per implant.
— Research by Kate Sandoval