Teeth WhiteningDr. Jacob’s practice offers both in-office and at-home teeth whitening. During one-hour in-office whitening treatments, a gel or rubber shield protects the gums while a bleaching agent quickly and effectively whitens the teeth. At-home teeth whitening is another convenient option for many patients. Rembrandt® and Zoom!® at-home whitening treatments contain peroxide in a gel or whitening strip to bleach the tooth enamel. The gel is placed in a mouth guard and worn overnight or twice a day for one to two weeks. Both the in-office and at-home systems are capable of whitening teeth up to eight shades with only a minimal investment of time.