Objectives: Purpose of this study was to assess the surface topography of IPS Empress II ceramic after treatment with a laser-powered hydrokinetic system (Er, Cr : YSGG laser) and to compare conventional surface treatment procedures which are hidrofluoric acid etching, airborne particle abrasion.Material and methods: Four mm in diameter, 2mm in thickness IPS Empress II discs were fabricated following the manufacturer’s instructions. All specimens sanded with 600 grit silicon carbide paper and were randomly divided into 7 groups(n: 5) depending on subsequent surface treatments ;Group I ; without additional surface treatments after sanding (control group),Group II ; were abraded with 50µm aluminum oxide particle 5 sec.,Group III ; 5 % hidrofluoric acid for 20 sec.,Samples of the Group VI, Group V and group IV were seperately irradiated by a pulsed laser-powered hydrokinetic system of energy parameters 1W; 1.5W;2W ;2.5W; respectively, each specimen was irradiated for 1 min All specimens examined using SEM. Results: All of the surface treatments changed microstructre of IPS Empress II ceramic When compared with the control group. The resulting surface topography were different among the groups which treated laser, airborne particle abrasion and acit etching. Superficial shallow irragularities and scratch-like surfaces were observed on the speciments with airborne particle abrasion. When the surface treatment was etching with hydrofluoric acid elongated crystals and shallow irregularities were observed on Empress II.The SEM photographs showed that laser system created rough and irregular hollow-like surface topography. Conclusion:Using laser and air-borne particle surface treatment system make abrasion with mechanical way. But acit etching effect the surface chemically. Therefore air borne partical abrasion and laser-powered hydrokinetic system groups showed similar surface characteristics.Er,Cr: YSGG hydrokinetic laser system may be alternative surface treatment method of ceramic restorations. But further investigation must be performed to evaluate the effect of this surface treatment method on bonding strengths of ceramic restoration.