Fifteen cases suffering from gingival hyper pigmentation from MSA outpatient clinic, are treated in a split mouth design where half the arch is treated using a rotary abrasion while the other is treated using diode laser. Pain was assessed using visual pain analogue during the first week following depigmentation procedure, melanin pigmentation was assessed using melanin index which was evaluated at base line, one week, one month, 3 months and 6 months   follow up periods. Aim of the study is to compare rotary abrasion and diode laser concerning pain and recurrence of gingival hyper pigmentation throughout the follow up period. Results: Both techniques showed minimal pain and discomfort, with minor pigmentation recurrence with rotatory abrasion at the 6 months follow up period. In addition to less bleeding with better field visualization during the procedure using diode laser in addition to reduced pain and discomfort.