Three-Dimensional Finite Element Analysis of Esthetic Custom made Hybrid Abutment Crowns with Different Angulations and Materials

Abstract

Restoring missing teeth in upper anterior zone is very challenging, as the clinician should restore function in addition to gaining optimal esthetics. The difficulty could be due to presence of bony defects due to old extraction site or implant placed with angulation. Angled abutments could be used in some cases to overcome these esthetic difficulties. In this study, 3D finite element analysis was done to evaluate custom hybrid abutments in three different angulations (0⁰, 15⁰ and 25⁰) while using four ceramic materials (Lithium disilicate, Yttrium stabilized zirconia, Polymer infiltrated glass ceramic and Zirconia reinforced lithium disilicate). A 3D model of bone representing maxillary section was fabricated. An implant was scanned using a Blue Desktop Scanner and the crown abutment was designed using 3-Matic software. Also, both the Ti-Base and the screw were designed using the 3-Matic software.