Abstract
Retention of Removable Partial Denture Fabricated by Digital Designing and 3D Printing Technology - A Cross Over Study
Highlights
Retention of digital RPD fabricated with digital impression, digital designing and casting a 3 dimensional (3D) printed pattern was higher than conventional RPD
Digital impressions for single crowns and fixed partial dentures have reported a high rate of success
The accuracy of the 3D models made with digital impression was evaluated in a previous study and they reported a range of 50-70 microns which is close to the maximum precision of a milling machine [28]
Summary
Twenty partially edentulous participants were enrolled in this study. Each patient received conventional RPD (group I) constructed for the lower arch. Its retention was evaluated during three months of follow up using digital force gauge device. They were recalled, and a digital impression was taken. A three dimensional image was formed and converted into 3D computer file that could be read by the computer-aided design (CAD) software. The RPD framework was digitally designed and a 3D printed resin patterns was produced, which were cast into a metal framework by conventional method. The digitally fabricated dentures (group II) were assessed for denture retention at delivery and after one and three months later. All data were tabulated and statistically analyzed
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