Advanced Technique to Increase Retention of All Metal and Porcelain Fused to Metal Crowns to Cast Post and Core Restorations

Short clinical crowns are more prone to crown dislodgment. Therefore, extra retentive features may be warranted. Though, classic retentive techniques are not always possible to apply in fixed prosthodontics. Hence, it may be beneficial to utilize non-conventional methods to enhance retention in situations where retention cannot be obtained from primary and secondary retentive factors. This article describes a modified technique to increase cast metal and porcelain fused to metal crowns’ retention to cast post and core by using a horizontal retentive pin and hole to lock the crown to the cast post and core.