cosmetic dentistry is generally used to refer to any dental work that improves the appearance (though not necessarily the functionality) of teeth, gums and/or bite. it primarily focuses on improvement in dental aesthetics in color, position, shape, size, alignment and overall smile appearance.
laser whitening is a
teeth whitening technique in which gums are covered with a rubber dam and a bleaching chemical is applied on the teeth. a beam of argon laser, which is intended to accelerate the process of bleaching, is then projected upon the teeth. this laser activates the bleaching chemical and lightens the teeth color.