Please use this identifier to cite or link to this item: doi:10.22028/D291-41514
Title: Retentive Behavior of Locator versus Ball Attachments on Parallel versus Non-Parallel Implants
Author(s): Orujov, Kamran
Roth, Daniel
Karl, Matthias
Grobecker-Karl, Tanja
Language: English
Title: Applied Sciences
Volume: 14
Issue: 2
Publisher/Platform: MDPI
Year of Publication: 2024
Free key words: implant overdenture
DDC notations: 610 Medicine and health
Publikation type: Journal Article
Abstract: Several factors determine the retention force in removable implant-retained overdentures using prefabricated ball- or locator-type attachment systems. In this context, it was the goal of this in vitro study to examine the effect of implant angulation and female part alignment. Two model situations with two parallel or 12◦ tilted implants were fabricated onto which locator or ball attachments could be mounted. Simulated prostheses (n = 5) were made as antagonist parts and the assemblies were positioned in a universal testing machine for repeatedly (three times per female attachment) quantifying retention force. Statistical analysis was based on Shapiro–Wilk tests, Levene tests, ANOVAs, Tukey’s HSD tests and Welch t-tests, with the level of significance set at p < 0.05. With tilted implants, the retention force of locators was significantly diminished (p < 0.004) by at least 21%, while with ball attachments, a maximum reduction of 8% was noted, with only yellow inserts showing a significant difference (p = 0.040) compared with the parallel situation. Not aligning female retentive components on tilted implants for achieving a common path of insertion in ball anchors had only a minor effect on retentive force (6.5% increase as compared with aligned female parts), which was not statistically significant (p = 0.100). Not being able to establish a common path of insertion in locator attachments affects retention force. Ball anchors allow for aligning female retentive components, but due to the spherical structure of the male component this seems not even to be necessary.
DOI of the first publication: 10.3390/app14020914
URL of the first publication:
Link to this record: urn:nbn:de:bsz:291--ds-415141
ISSN: 2076-3417
Date of registration: 8-Feb-2024
Faculty: M - Medizinische Fakultät
Department: M - Zahn-, Mund- und Kieferheilkunde
Professorship: M - Prof. Dr. Matthias Karl
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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