teeth whitening using a dedicated lamp is always done in a dental office. thanks to an additional factor speeding up the whitening effect, such as light, the patient can enjoy the result of whiter teeth after just one visit. before starting the whitening process, it is usually recommended to remove tartar and undergo teeth sandblasting – these two procedures increase the chances of achieving a satisfying color. during the first part of the visit, the dentist typically applies a special protective agent to the gums. then, a whitening gel is applied to the teeth, which is activated by the light emitted by the lamp. the most significant difference distinguishing this method of teeth brightening is the immediate effect of a white smile.