In-chair whitening is fastest; custom take-home trays are gentler and cost less. How both compare with shop-bought kits, and how to choose.
Both use hydrogen peroxide. The difference is the activation source. Here's what actually changes in results, speed, and sensitivity.
Coffee, red wine, turmeric, and tobacco cause most visible stains. Here's the science and a daily routine that keeps enamel bright.
The short answer is no — but you can still brighten the overall smile. Here's what's actually possible.
A single tooth that darkens after a root canal or injury can often be whitened from the inside. How internal bleaching works, its limits and what follows.