Non cutting burs are used in a high-speed, air driven hand piece. When the bur is applied to the calculus, the calculus disintegrates and is flushed away by the water spray. They have been shown to cause extensive enamel damage and when used in humans, resulted in post operative pain. | Non cutting burs are used in a high-speed, air driven hand piece. When the bur is applied to the calculus, the calculus disintegrates and is flushed away by the water spray. They have been shown to cause extensive enamel damage and when used in humans, resulted in post operative pain. |