In Dentistry the use of laser is considered an adjunctive in delivering a stage of tissue management conducive to achieving a completed hard or soft tissue procedures. Diode lasers have been predominantly used for various clinical applications which are broadly termed as low-level laser therapy (LLLT) or 'bio stimulation.Therefore, dental practitioners should be aware of laser adverse effects during therapeutic procedures to minimize the potential risk of patients. Because of the numerous advantages and application in dentistry.