Effect of Rinsing Time on the Accuracy of Interim Crowns Fabricated by Digital Light Processing: An Study

Overview

Journal J Adv Prosthodont

Specialty Dentistry

Date 2021 Mar 22

PMID 33747392

Citations 3

Authors

Beom-Il Lee

Seung-Gyu You

Seung-Min You

Seen-Young Kang

Ji-Hwan Kim

Affiliations

Soon will be listed here.

Abstract

Purpose: This study was to evaluate the effect of rinsing time on the accuracy of interim crowns fabricated by digital light processing.

Materials And Methods: The maxillary right first molar master die was duplicated using a silicone material, while a study die was produced using epoxy resin. Scans of the epoxy resin die were used in combination with CAD software to design a maxillary right first molar interim crown. Based on this design, 24 interim crowns were fabricated with digital light processing. This study examined the trueness and precision of products that were processed with one of the three different postprocessing rinsing times (1 min, 5 min, and 10 min). Trueness was measured by superimposing reference data with scanned data from external, intaglio, and marginal surfaces. Precision was measured by superimposing the scan data within the group. The trueness and precision data were analyzed using Kruskal-Wallis, nonparametric, and post-hoc tests, and were compared using a Mann-Whitney U test with Bonferroni correction (α=.05).

Results: The trueness of the external and intaglio surfaces of crowns varied significantly among the different rinsing times ( =.004, =.003), but there was no statistically significant difference in terms of trueness measurements of the marginal surfaces ( =.605). In terms of precision, statistically significant differences were found among the external, intaglio, and marginal surfaces ( =.001).

Conclusion: Interim crowns rinsed for 10 minutes showed high accuracy.

Citing Articles

Effect of Postrinsing Times and Methods on Surface Roughness, Hardness, and Polymerization of 3D-Printed Photopolymer Resin.

Katheng A, Prawatvatchara W, Tonprasong W, Namano S, Kongkon P Eur J Dent. 2024; 19(1):154-164.

PMID: 38759997 PMC: 11750327. DOI: 10.1055/s-0044-1786866.

Effects of washing agents on the mechanical and biocompatibility properties of water-washable 3D printing crown and bridge resin.

Liu Y, Jin G, Lim J, Kim J Sci Rep. 2024; 14(1):9909.

PMID: 38688952 PMC: 11061276. DOI: 10.1038/s41598-024-60450-7.

Effect of post-rinsing time and method on accuracy of denture base manufactured with stereolithography.

Katheng A, Kanazawa M, Komagamine Y, Iwaki M, Namano S, Minakuchi S J Adv Prosthodont. 2022; 14(1):45-55.

PMID: 35284051 PMC: 8891682. DOI: 10.4047/jap.2022.14.1.45.

Comparison of Intaglio Surface Trueness of Interim Dental Crowns Fabricated with SLA 3D Printing, DLP 3D Printing, and Milling Technologies.

Son K, Lee J, Lee K Healthcare (Basel). 2021; 9(8).

PMID: 34442120 PMC: 8391771. DOI: 10.3390/healthcare9080983.

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