Safe and Sensational

Use it
You may have to wait until after your pregnancy to tackle deep, intrinsic tooth stains, but you can brush away surface stains using an electric toothbrush. Toothpastes with ingredients like silica, which gently polish away stains, also are safe. > Try the Crest SpinBrush Pro Whitening electric toothbrush, $8.

Lose it
"No evidence-based research I know of indicates that [peroxide-based] at-home tooth-whitening products are harmful to pregnant women, but why take the risk?" asks James H. Doundoulakis, D.M.D., M.S., co-author of The Perfect Smile (The Hatherleigh Press, 2004). "No dentist would recommend their use."