Cardiff Metropolitan University
Browse

Comparison of virtual and physical dimensions in AM resin dental devices and fit of devices with conventionally produced base plates

Download (1.69 MB)
journal contribution
posted on 2022-12-09, 16:52 authored by Noor Abdullah Al Mortadi,, Dominic Eggbeer, Jeffrey Lewis, Robert Williams

 

Purpose

The purpose of this study is to develop and apply clinically relevant methods of analysing the accuracy of dental appliances fabricated using additive manufacture (AM) compared to the computer-aided design (CAD) geometry. The study also compared fit between conventionally laboratory-fabricated and AM-produced base plates.

Design/methodology/approach

The techniques were applied to two types of dental devices where AM fabrication methods could foreseeably be used as an alternative to laboratory production. “L” and cubic shapes of defined dimensions and spatial locations were positioned on the devices which were fabricated using AM. For assessing the dimensions, the “L” and cubic shapes were then measured on the physical builds ten times and compared to the CAD model. To assess the fit of AM and lab-produced devices, three upper and three lower conventionally fabricated acrylic base plates were compared to three upper and three lower plates. Silicone impression material was allowed to set between the casts and the base plates which filled any discrepancy between the two surfaces. The thickness of this silicone media was measured ten times at five different points on each base plate type and the results compared.

Findings

The results indicated that the evaluated CAD/AM technique is able to produce dental appliance components that are consistent with tolerance levels that would be expected with conventional methods of baseplate design. This research demonstrated that a fully CAD/AM methodology represents a potentially viable alternative to conventional lab-based methods for two types of dental appliances.

History

Published in

Rapid Prototyping Journal

Publisher

Emerald

Version

  • AM (Accepted Manuscript)

Citation

"Al Mortadi, N., Eggbeer, D., Lewis, J. and Williams, R. (2017) 'Comparison of virtual and physical dimensions in AM resin dental devices and fit of devices with conventionally produced base plates', Rapid Prototyping Journal, 24 (1) pp.188-194"

Print ISSN

1355-2546

Cardiff Met Affiliation

  • PDR

Cardiff Met Authors

Dominic Eggbeer

Cardiff Met Research Centre/Group

PDR

Copyright Holder

  • © The Publisher

Language

  • en

Usage metrics

    PDR Research - Journal Articles

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC