Objective: This study evaluated the clinical response and side effects during laser tooth bleaching 612 patients. Methods: A rubber dam was placed over the teeth to protect the gum. Laser whitening procedure began when patented gel applied to the teeth. When argon laser energized, the gel acts as a catalyst to whiten the enamel. Results: All the procedure was accomplished in about two hours without pain or other discomfort. Conclusion: Laser whitening is far superior to traditonal bleaching.