Statement of problem: Dental cements exhibit varying degrees of brittleness, which may concentrate the masticatory forces on the cement, veneer materials or underlying abutment either natural tooth or implant. Materials and method: A total of 28 upper maxillary molar resin dies were constructed, on which metal copings –with loops- were fabricated. Samples were divided into four groups according to cement used for coping cementation; group A; cemented using GIC cement (Ketac-Cem Apilcap, 3M ESPE, USA), group B; cemented using experimental medical grade silicon adhesive (EMGS) (Dow Corning Corporation, USA), group C; cemented using experimental medical grade rubber adhesive (EMGR) (Dow Corning Corporation, USA) and group D; cemented using Resin cement (Rely X U200, 3M ESPE, USA). Samples were submitted to a tensile test using a universal testing machine (Instron 8874; Instron Corp. Canton, Mass) under a constant crosshead speed of 1.00 mm/min. Another 28 upper maxillary molar were embedded in transparent acrylic resin (Vertex- Dental B.V., The Netherlands). The blocks were trimmed to expose dentine surface on which a 3x3 mm Cr-Co cubes with a thickness of 2 mm were cemented on them. Samples were also divided according to cement used. A mono-bevelled chisel shaped metallic rod attached to the upper movable compartment of testing machine traveling at cross-head speed of 0.5 mm/min was used to apply load on the side metal cubes attached to lower compartment, for shear bond testing. All data was collected and statistically analyzed. Results: The highest mean value was observed in group D (611.5 MPa) and the lowest mean value was observed for group C (12.86 MPa). Statistical analysis revealed no significant difference between groups (P= 1.03). Statistical analysis among groups showed significant difference between groups A and B (P= 0.003), between groups A and C (P= 0.02) and between groups B and C (P= 0.0001). But no significant differences were found between groups A and D (P= 8.11), groups B and D (P= 4.36) or between groups C and D (P= 3.96). Regarding shear bond strength the highest mean value was observed in group D (13.23 MPa) and the lowest mean value was observed for group C (0.2 MPa). Statistical analysis revealed no significant difference between groups (P= 4.93). Statistical analysis among groups showed significant difference between groups A and C (P= 0.0002), between groups A and D (P= 0.01), between groups B and C (P= 0.01) and between groups C and D (P= 0.0002). But no significant differences were found between groups A and B (P= 1.16), or between groups B and D (P= 9.22). Conclusions: None of the two experimental medical grade adhesives showed comparable results to either GIC or resin cements. Keywords: Stress-Breaking, Shock-Absorbing, Glass ionomer, Resin, cement, Rubber adhesive, Silicon adhesive, Tensile strength and Shear bond strength.