In treatments of gum diseases, wounds and other soft tissue injuries, lasers lead to less bleeding. If your teeth already have fillings, lasers can't be used on them. Although there are many uses of lasers in dentistry, lasers cannot be applied in all dental procedures. Lasers only reduce the need for administration of anesthesia; they do not eliminate the use of anesthesia. Laser dentistry effectively replaces the surgical blade, and due to the way it works allows quicker healing, less bleeding, less scarring and less anesthesia.