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

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Author
Al Mortadi, Noor
Eggbeer, Dominic
Lewis, Jeff
Williams, Robert
Date
2018-02-15Acceptance date
2017-03-14
Type
Article
Publisher
Emerald
ISSN
1355-2546
1758-7670 (ESSN)
Metadata
Show full item recordAbstract
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 comparedfit between conventionallylaboratory-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 andcompared to the CAD model. To assess thefit of AM and lab-produced devices, three upper and three lower conventionally fabricated acrylic baseplates were compared to three upper and three lower plates. Silicone impression material was allowed to set between the casts and the base plateswhichfilled any discrepancy between the two surfaces. The thickness of this silicone media was measured ten times atfive different points on eachbase 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 base plate 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.
Journal/conference proceeding
Rapid Prototyping Journal;
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
Description
This article was published in Rapid Prototyping Journal on 15 February 2018, available at https://doi.org/10.1108/RPJ-06-2016-0101
Sponsorship
Cardiff Metropolitan University (Grant ID: Cardiff Metropolian (Internal))
Collections
- Un-themed [116]
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