Marginal Adaptability of Custom Made Cast Post Made by Different Techniques - A Literature Review

Introduction: A post and core is a type of dental restoration required where there is an inadequate amount of sound tooth tissue remaining to retain a conventional crown.Marginal and internal adaptation of indirect restorations are both very important parameters that may affect the periodontal status and longevity of the restorations. .In this review we report all the factors responsible for affecting the marginal adaptability of post and core systems used in restoration of endodontically treated teeth. Purpose: To find out all those factors which can be used to increase marginal adaptability which ultimately enhance the clinical success rate. Since Increased marginal discrepancies of post endodontic restorations are related to increased exposure of the luting material to the oral environment, leading to chemo-mechanical degradation of the cement and the adhesive interface between the tooth structure, luting agent, and esthetic indirect restoration. Conclusion: The performance of a CAD-CAM system relative to marginal adaptation is influenced by the restorative material. Digital workflow has several advantages over conventional casting, such as eliminating the need for impression material and transportation, reducing the time-consuming laboratory procedures, increasing patient comfort and the marginal adaptability and internal fit.