Abstract
The objective of this study was to validate the Numerical Simulation Model proposed for Locator (Zest Anchors, Inc.) system, by comparing the retention values with the ones mentioned in the product catalogue in order to optimise the shape of the overdenture systems, to improve the component properties and to study the impact of certain parameters upon the functionality. The use of numerical simulation is useful to test several constructive versions with relatively low cost. By using this method, the design is carried out in a virtual environment, and the high costs involved in prototypes testing are eliminated. The Finite Element Model designed for Locator system and the assigned properties leading to simulated retention force values close to those given in the Straumann catalog, demonstrate that the numerical simulation properly surprised the physical phenomena and it may be used for retention system optimization.
Highlights
Poor retention related with loss of complete denture bone support is one of the main oral challenges, especially in the elderly edentulous persons
The objective of this study was to validate the Numerical Simulation Model proposed for Locator (Zest Anchors, Inc.) system, by comparing the retention values with the ones mentioned in the product catalogue in order to optimise the shape of the overdenture systems, to improve the component properties and to study the impact of certain parameters upon the functionality
The Finite Element Model designed for Locator system and the assigned properties leading to simulated retention force values close to those given in the Straumann catalog, demonstrate that the numerical simulation properly surprised the physical phenomena and it may be used for retention system optimization
Summary
Poor retention related with loss of complete denture bone support is one of the main oral challenges, especially in the elderly edentulous persons. According to Mericske-Stern R (1998), problems regarding integrating dentures are observed with a higher incidence for mandibular dentures than for maxillary dentures. Burns et al (1995) found that retention is a key element for patient's satisfaction in removable prosthodontics. Several retention systems (magnets, bars, ball abutments, telescopic crowns, magnets, Locator) have been used to stabilize dentures but none has proved to be ideal. Retentive mechanisms were identified by Goodacre et al (2003) as the most common (33%) prosthodontic complication, requiring routine maintenance to ensure successful long-term outcomes. Fatigue and failure of overdenture attachments negatively affects function, maintenance aspects and patient satisfaction (Mackie et al 2011)
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