Abstract
The objective of this investigation was to analyze the mechanical features of two different prosthetic retention devices. By applying engineering tools like the finite element method (FEM) and Von Mises analyses, we investigated how dental implant devices hold out against masticatory strength during chewing cycles. Two common dental implant overdenture retention systems were analyzed and then compared with a universal—common dental abutment. The Equator® attachment system and the Locator® arrangement were processed using the FEM Ansys® Workbench. The elastic features of the materials used in the study were taken from recent literature. Results revealed different responses for both the devices, and both systems guaranteed a perfect fit over the axial load. However, the different design and shape involves the customized use of each device for a typical clinical condition of applying overdenture systems over dental implants. The data from this virtual model showed different features and mechanical behaviors of the overdenture prosthodontics attachments. A three-dimensional system involved the fixture, abutment, and passant screws of three different dental implants that were created and analyzed. Clinicians should find the best prosthetic balance to better distribute the stress over the component, and to guarantee the patients clinical long-term results.
Highlights
IntroductionThe management of the atrophic mandible using dental implants is a common technique.The lower jaw is a complex anatomical district and the presence of the tongue reduces the contact surface of the removable prosthesis [1,2]
The management of the atrophic mandible using dental implants is a common technique.The lower jaw is a complex anatomical district and the presence of the tongue reduces the contact surface of the removable prosthesis [1,2]
Though removable prosthesis can offer high aesthetics, the main limit of such dental rehabilitation is related to their retention
Summary
The management of the atrophic mandible using dental implants is a common technique.The lower jaw is a complex anatomical district and the presence of the tongue reduces the contact surface of the removable prosthesis [1,2]. The possibility of positioning two or more dental implants in the anterior mandible gives clinicians the opportunity to increase the removable prosthesis retention or to fix partial or complete lower dentures [1,2,3,4,5]. The patient’s desires, both before and after a medical therapy, are fundamental to the final satisfaction with the treatment outcomes [6,7,8,9]. This is even more critical today, as the current practice of evidence based medicine requires that patients be actively engaged in the decision making process with regards to their treatment.
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