Dental cleanings involve removing plaque (soft, sticky, bacterium troubled film) and tartar (calculus) deposits that have engineered informed the teeth over time. Your teeth square measure frequently bathed in spittle that contains metallic element and different substances that facilitate strengthen and shield the teeth. whereas this is often an honest factor, it conjointly means we tend to tend to urge a build-up of metallic element deposits on the teeth. This chalky substance can eventually build up over time, like limescale in an exceedingly pipe or kettle. typically it’s tooth colored and may simply be mistaken as a part of the teeth, however it can also vary from brown to black in color.