Introduction: Ceramic brackets exhibit generally high bond strength and enamel surface damage after debonding. Aim of the study: To evaluate and compare shear bond strength and enamel surface changes while de-bonding different ceramic bracket systems Materials and methods: Three types of ceramic brackets (polycrystalline Clarity; 3M Unitek, Monrovia, Calif; monocrystalline Inspire Ice; Ormco, Orange, Calif and Radiance; American orthodontics, USA) were bonded to extracted maxillary premolars, with Transbond XT light cure adhesive paste (3M Unitek). The sample consisted of 90 extracted maxillary premolar teeth. 15 bonded teeth of each type, were tested on UTM and 15 bonded teeth, were removed by pliers according to the manufacturers recommendations. After debonding with pliers ARI scores and SEM analysis of tooth surface and bracket base were evaluated under different magnifications (30X and 500X). Results: The mean SBS value of Inspire Ice, Radiance and clarity Advanced were 22.81± 2.02 MPa, 17.93±1.63 MPa and 17.28 ±1.45 Mpa respectively. ARI score showed that most of the adhesive left on the tooth surface of monocrystalline brackets. SEM analysis showed that enamel surface changes in the form of open focal holes on tooth surface and globules were found on the corresponding bracket base. Conclusion: The highest SBS with minimum enamel surface damage observed on Inspire Ice.