Intaglio surface of CNC milled versus 3D printed maxillary complete denture bases - An in vitro investigation of the accuracy of seven systems.

Autor: Cameron AB; School of Medicine and Dentistry, Griffith University, Member of Menzies Health Institute Queensland Disability & Rehabilitation center, Gold Coast, Australia. Electronic address: a.cameron@griffith.edu.au., Kim H; Brisbane Australia, Australia., Evans JL; School of Medicine and Dentistry, Griffith University, Gold Coast, Australia., Abuzar MA; School of Medicine and Dentistry, Griffith University, Gold Coast, Australia., Tadakamadla SK; Dentistry and Oral Health, Department of Rural Clinical Sciences, La Trobe Rural health School, La Trobe University, Violet Vines Marshman Centre for Rural Health Research, La Trobe Rural Health School, La Trobe University, Bendigo, Australia., Alifui-Segbaya F; School of Medicine and Dentistry, Griffith University, Member of Menzies Health Institute Queensland Disability & Rehabilitation center, Gold Coast, Australia.
Jazyk: angličtina
Zdroj: Journal of dentistry [J Dent] 2024 Dec; Vol. 151, pp. 105389. Date of Electronic Publication: 2024 Oct 10.
DOI: 10.1016/j.jdent.2024.105389
Abstrakt: Objectives: The accuracy of the intaglio surface of maxillary complete dentures produced with a variety of digital manufacturing systems have been comprehensively investigated, however, not for multiple systems in the same study. This in vitro study endeavors to measure and compare the accuracy of the intaglio surface of maxillary complete denture bases constructed with different photopolymerization-based 3D printing and CNC milling systems.
Materials and Methods: Two subtractive manufacturing machines and five additive manufacturing machines were used to manufacture a maxillary denture bases (n = 10) for analysis. The samples were stored in artificial saliva at 37 °C for 7 days to mimic intraoral use before they were air dried for 5 min, and then scanned with an E3 dental laboratory scanner to generate STL files. A 3D metrology software program was used to analyze the data against the original CAD design. Statistical differences were determined with 1-way analysis of variance (ANOVA) and the Kruskal Wallis test (α=0.05). Color deviation heat maps were used to interpret areas of clinical significance.
Results: The results indicated that the subtractive manufacturing method delivers the truest and most precise intaglio surface of maxillary complete denture bases. The additive manufacturing technique delivers less true and less precise results with inconsistency observed between the different systems as opposed to the subtractive manufacturing groups which showed no significant differences.
Conclusions: When manufacturing a complete maxillary denture base subtractive manufacturing will deliver the most consistent and true results.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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