Introduction: The metal-porcelain pair combines good aesthetic value of porcelain with good mechanical value of metal. However for the long-term performance of this pair it is very important to ensure good adhesion. Due to the observation of problems with the adhesion of metal and porcelain in the presence of shear forces, ensuring sufficient strength is a very important factor. This is because by ensuring good adhesion between the materials porcelain manages to overcome the force caused by biting, which means significantly lower risk of breaking the bond between the materials. Purpose: The purpose of this research is to determine whether the use of bonding agent between Co-Cr alloy and porcelain increases the bond strength. Methods: In the research we used the descriptive method of work based on the study of the already existing literature and articles. For the experimental part of the study we prepared samples of a metal frame with a porcelain layer. Metal frames were prepared using computer aided manufacturing technology on which we then manually applied the feldspathic porcelain. On some of the samples we used bonding agent and on others we did not use it. All samples were made under the same conditions and the shear test was used for determining the debonding strength. Results: The process of preparing samples with the help of digital technology in dentistry, such as design software, milling strategy software and a milling machine itself, is presented. Then, the procedure for applying ceramic layers to the metal frame, the results of the shear test, and the analysis are explained. Discussion and conclusion: There are many factors that affect the strength of the bond between metal and porcelain materials so this field needs to be explored step by step in the future. Based on the results of our research, it is difficult to claim that the bonding agent between CoCr alloy and ceramic layer had any effect on the results but we did notice some changes in the cracks of porcelain layer after the shear test. In addition, we can be certain that by following the manufacturer's instructions, a sufficient shear strength can be ensured with and without a bonding agent.