Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Comparative Study
. 2024 Jun 8;24(1):671.
doi: 10.1186/s12903-024-04439-8.

Intaglio surface trueness of dentures bases fabricated with 3D printing vs. conventional workflow: a clinical study

Andrei-Bogdan Faur  1   2 , Raul Nicolae Rotar  3   4 , Anca Jivănescu  3   4
Affiliations
Comparative Study

Intaglio surface trueness of dentures bases fabricated with 3D printing vs. conventional workflow: a clinical study

Andrei-Bogdan Faur et al. BMC Oral Health. .

Abstract

The latest generation of intraoral scanners can record the prosthetic field with relative ease, high accuracy and comfort for the patient, and have enabled fully digital protocols for designing and manufacturing complete dentures. The present study aims to examine the intaglio surface trueness of 3D printed maxillary dentures produced by fully digital workflow in comparison with dentures produced by analogue clinical and laboratory prosthetic workflow. The edentulous maxillary arch of 15 patients was scanned with an intraoral scanner as well as the intaglio of the delivered conventional denture. The scan of the edentulous arch was imported into a dental design software to produce the denture base which was then 3D printed. The intaglio surface of the finished 3D printed denture bases was digitized and used to assess the trueness of the printed denture bases compared to the intaglio surface of the conventional dentures as well as performing a trueness comparison in relation to the scanned edentulous arches. The dataset (n = 30) was subjected to Kruskal-Wallis test analysis, the significance level being established at α = 0.05. The results of the study showed that the printed group displayed better trueness values with a median of 176.9 μm while the analogue group showed a median of 342 μm. Employing a fully digital workflow to produce 3D-printed denture bases yields a consistent and precise manufacturing method when accounting for the intaglio surface of the denture.

Keywords: 3D-printed denture; CAD/CAM; Intraoral scanning; Trueness.

PubMed Disclaimer

Conflict of interest statement

The authors declare no competing interests.

Figures

Fig. 1
Fig. 1
Edentulous area scanning pattern
Fig. 2
Fig. 2
Intaglio of the delivered conventional denture generated as a 3D mesh after scanning. (a) Top view. (b) Side view
Fig. 3
Fig. 3
3D Printed denture bases with NextDent Denture 3D + biocompatible resin. (a) Denture bases inside the 3D printer. (b), (c), (d) 3D printed denture bases before the post-processing steps, viewed from different angles
Fig. 4
Fig. 4
Post-processing of the 3D printed denture bases. (a) Washing in in ethanol (> 90%) bath for 5 min. (b) Removing the supports and post-curing under UV-light treatment for a total of 10 min. (c) Finished 3D printed denture bases
Fig. 5
Fig. 5
Intaglio of the printed denture base generated as a 3D mesh after scanning. (a) Top view. (b) Side View
Fig. 6
Fig. 6
(a) 3D mesh of the analogue denture as reference data. (b) Isolated area of interest. (c) 3D mesh of the printed denture as measured data. (d) Precise alignment and overlapping of the measured data over the reference data
Fig. 7
Fig. 7
3D Comparison colour coded map displaying outward displacement in red and inward displacement in blue, both measured in millimetres
Fig. 8
Fig. 8
(a) 3D mesh of the arch mesh imported into Meshmixer software. (b) 3D mesh after flipping vertices with “Flip Normals” function
Fig. 9
Fig. 9
(a) 3D Comparison colour coded map of the analogue denture intaglio surface, displaying outward displacement in red and inward displacement in blue, measured in millimetres. (b) 3D Comparison colour coded map of the 3D printed denture intaglio surface
Fig. 10
Fig. 10
Boxplot presenting the intaglio surface trueness values of the analogue denture group and the 3d-printed denture group
See this image and copyright information in PMC

Similar articles

See all similar articles

References

    1. Al-Rafee MA. The epidemiology of edentulism and the associated factors: a literature review. J Fam Med Prim care. 2020;9(4):1841–3. doi: 10.4103/jfmpc.jfmpc_1181_19. - DOI - PMC - PubMed
    1. Jacob L, Shin J, Il, Oh H, López-Sánchez GF, Smith L, Haro JM et al. Association between diabetes and edentulism and their joint effects on health status in 40 low and middle-income countries. BMJ open Diabetes Res care. 2021;9(1). - PMC - PubMed
    1. Soboleva U, Rogovska I. Edentulous patient satisfaction with conventional complete dentures. Med (Kaunas). 2022;58(3). - PMC - PubMed
    1. Raj N, Ahmed S, Nandini VV, Lathief J, Kumar D, Surya R. Aesthetic perception of patients and dentists on conventional and characterized complete dentures. J Pharm Bioallied Sci. 2022;14(Suppl 1):S611–5. doi: 10.4103/jpbs.jpbs_784_21. - DOI - PMC - PubMed
    1. Devi BV, Ahmed N, Ganapathy D, Maiti S, Pandurangan KK. Expectation of treatment outcomes in complete denture wearers. J Adv Pharm Technol Res. 2022;13(Suppl 1):S277–81. - PMC - PubMed

Publication types

LinkOut - more resources