In vitro retention force measurement for three different attachment systems for implant-retained overdenture

Abstract

Aim:The aim of this study is to compare the retention force of three different types of overdenture attachment systems used in implant-retained mandibular complete overdentures.Materials and Methods:Twenty-one similar acrylic resin blocks were prepared and divided into three study groups: Group A (snap attachment) - 10 specimens, Group B (locator attachment) - 1 specimen, and Group C (syncone attachment) - 10 specimens. A single rectangular heat cure acrylic resin block with two implant analogs 22 mm apart was used with all specimens. Each specimen was subjected to 5500 cycles of insertion and removal in the presence of artificial saliva, representing 5 years of usage. Retention was measured three times for each specimen using universal testing machine. Data were analyzed using one-way and two-way analysis of variance at 95% level of confidence.Results:Locator attachment group (Group B) showed the greatest retention level throughout the study, followed by snap attachment (Group A), and syncone attachment (Group C) showed the lowest retention level.Conclusion:Regardless of the initial retention level of overdenture attachment, gradual loss of retention values is inevitable. However, the rate of retention loss in overdenture attachments is higher in types which comprised plastic parts within their components, rather than those totally made up of noble metals.

Evaluation of the Retention of Two Different Retention Mechanisms (Nylon Caps and Retention Sil ) in Locators Retained Implant Mandibular Over-Denture. A Randomized Clinical Trial (Rct)

“…Forcemeter digital device is considered the standard method to measure the retention of removable prosthesis it used in in-vitro as well as in vivo studies. It is safe reliable accurate and simple method (12)(13) .…”

Stress analysis of two different attachments for a single implant retained mandibular overdentures in the midline (In vitro study)

“…The advantages of Molloplast -B, ensured that it would remain constant throughout the experiment owing to its dimensional stability (Rady et al, 2017) (15) . A single implant retained mandibular overdentures have proved to be a cost effective simple treatment modality especially in eldery patients (Mahoorkar et al, 2016, Kanazawa et al, 2018).…”

A systematic review and meta-analysis of the attachments used in implant-supported overdentures

“…[ 45 ] The rate of retention loss in attachments was higher in attachments with plastic parts within their components, rather than those totally made up of noble metals. [ 46 ] Further Randomised Controlled trials are required for evaluation of newer attachment systems in terms of retention loss and mucosal changes. [ 47 ]…”