Özet:

Purpose - Supply is an element that houses a lot of variables such as quality, performance, cost and provides strategic competitive superiority. The contribution of making the right decisions for both the production and service sector in the processal effectiveness is great. Because the first step of the supply chain is that the right selection of suppliers and sustainable relationships contribute to the business’s achievement of goals. Companies need to work with specialists on what they want to get support while focusing on their own skills. Therefore, they prefer the use of external resources to ensure this. At this point, the problem of the choice of the supplier is a very criterion difficult decision-making process, and an effective method should be chosen. The aim of this study is to move through the various factors that cause to buy some products or services themselves instead of from outside, to determine which criteria they take into account at the point of selection of suppliers and to support the making of healthy decisions between alternatives using multiple criteria decision-making methods that will help decision makers about the choice of suppliers. Method - The problem of a business's choice of suppliers in the course of the study is addressed by the methods of Entropy and Topsis (Ideal Solution-Based Ranking Method) and the priorities of the suppliers are calculated by these methods. Based on literature research and expert opinions, 8 criteria used in the selection of suppliers and 6 suppliers companies have been determined. Results - The study determined the priorities for alternative suppliers, so the decision-making process was detailed. According to the findings of the study, the supplier’s priority in the applied business is for the clinic’s implant service requirements. Then the kitchen supplier, and in the third place, the supplier of the supply material, which is the complementary of these services, should be preferred. Debate - The work is implemented in a dental clinic that operates in the health sector and can be evaluated by different criteria in other sectors. At the point of determination of criteria, different variables can be added and work can be repeated by different methods.

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