Purpose: The purpose of this study was to evaluate the shear bond strength of repaired ceramic after different surface treatments using a newly introduced composite resin. Materials & Methods: Using Pressable technique twenty four ceramic discs were constructed. Twenty four wax discs of the desired dimensions were applied to specially designed Teflon mould for standardization of dimension (7mm diameter 3 mm thickness). Then wax discs were invested, pressed in the Empress furnace to form All-ceramic core samples (IPS e.max Press). Another twenty four discs were constructed (using the same specially designed mould) to fabricate the All-ceramic veneering samples (IPS e.max Ceram) by the Layering technique. Samples then were subdivided into 4 subgroups according to the ceramic surface treatment. Nano-hybrid composite resin discs (5mm diameter 3 mm thickness) were fabricated over the treated ceramic discs using specially designed Teflon mould. Shear bond strength test was carried out using computerized universal testing machine. Surface topography of the samples was analyzed using Scanning Electron Microscope and mode of failure was also analyzed. Results: No statistically significant difference between mean shear bond strength of the two materials regardless of the surface treatment. Regarding the effect of ceramic surface treatment on shear bond strength of all-ceramic core samples, the mean and standard deviation values of shear bond strength were 4.70 ± 1.50 MPa, 10.32 ± 2.16 MPa, 10.31 ± 2.52 MPa and 9.79 ± 1.16 MPa for control, air abrasion, acid etching and air abrasion + Acid etching, respectively. Regarding the effect of surface treatment on shear bond strength of all-ceramic veneering samples, the mean and standard deviation values of shear bond strength were 3.87 ± 0.41 MPa, 8.47 ± 1.96 MPa, 13.23 ± 4.08 MPa and 8.82 ± 3.44 MPa for control, air abrasion, acid etching and air abrasion + Acid etching, respectively. Conclusions: Composite resin material can be used as a repairing material after proper ceramic surface treatment and silane coupling agent application. Airborne particle abrasion with 50μm Al2O3 for 20 seconds or acid etching with 9.6% HF for 2 minutes can produce the required surface modifications for bonding to all-ceramic core restorations. All-ceramic veneering material samples which were treated with 9.6% HF acid showed the best results compared to other samples.