Does ecologically sustainable printing and postprocessing enable dimensionally stable dental casts?

IF 4.8 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of dentistry Pub Date : 2025-06-12 DOI:10.1016/j.jdent.2025.105908

Catharina Anna Lammer , Mustafa Borga Dönmez , Gülce Çakmak , Çiğdem Kahveci , Burak Yilmaz

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引用次数: 0

Abstract

Objective

To assess how resin type (water-washable [WW] and non-water-washable [NWW] and cleaning solution (water, methyl ether solvent [MES], or isopropyl alcohol [IPA]) affect the dimensional stability of additively manufactured casts over a three-month period.

Methods

Maxillary casts were fabricated using two WW (WW1 and WW2) and one NWW (NWW) cast resins (N = 24). These casts were divided into groups depending on the cleaning solution (water, MES, and IPA) used (n = 8), and digitized one day (T0), one week (T1), two weeks (T2), three weeks (T3), and three months (T4) after fabrication. Deviations were analyzed across regions (anterior, posterior, entire arch, soft tissue, and overall). A generalized linear model was used for statistical analysis (α = 0.05).

Results

NWW casts had the lowest anterior, posterior, and entire arch deviations (P < 0.001). WW1 casts mostly showed higher deviations than WW2 casts in these regions when cleaned with water or MES (P ≤ 0.028). WW1 casts had the highest soft tissue deviations within each cleaning solution (P < 0.001). With water, WW1 casts had higher deviations than with MES, while WW2 casts showed lower deviations than NWW casts (P ≤ 0.032). NWW resin or MES led to the lowest entire cast deviations, with the lowest values observed at T0 (P ≤ 0.007).

Conclusions

NWW casts mostly had the highest stability, while WW2 casts mostly had higher stability than WW1 casts. MES led to higher stability for WW resins and resulted in similar or higher stability for NWW resin compared to IPA.

Clinical Significance

Tested water-washable resins, particularly when cleaned with methyl ether solvent, may be sustainable alternatives to non-water-washable resin for dentate casts, as their deviations were acceptable for diagnostic and orthodontic purposes for three months. Methyl ether solvent can improve eco-friendliness of the fabrication of casts in tested non-water-washable resin.

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生态可持续的打印和后处理是否能使牙模尺寸稳定？

目的：评估树脂类型（可水洗[WW]和不可水洗[NWW]）和清洗溶液（水、甲基醚溶剂[MES]或异丙醇[IPA]）在三个月内对增材制造铸件尺寸稳定性的影响。方法：采用两种WW （WW1和WW2）和一种NWW （NWW）铸造树脂（N = 24）制作上颌铸件。根据使用的清洗液（水、MES和IPA）将这些模型分为不同的组（n = 8），并在制作后一天（T0）、一周（T1）、两周（T2）、三周（T3）和三个月（T4）进行数字化。分析各区域（前、后、整个弓、软组织和整体）的偏差。采用广义线性模型进行统计分析（α = 0.05）。结果：NWW型模的前、后、全弓偏差最小（P < 0.001）。当用水或MES清洗时，这些地区一战铸件的偏差大多高于二战铸件（P≤0.028）。WW1模型在每种清洗液中软组织偏差最高（P < 0.001）。WW1浇铸体的偏差大于MES浇铸体，而WW2浇铸体的偏差小于NWW浇铸体（P≤0.032）。NWW树脂或MES导致的全铸偏差最小，在T0时达到最小值（P≤0.007）。结论：二战铸型稳定性最高，二战铸型稳定性高于一战铸型。与IPA相比，MES使WW树脂具有更高的稳定性，并使NWW树脂具有类似或更高的稳定性。临床意义：经测试的可水洗树脂，特别是当用甲基醚溶剂清洗时，可能是牙齿铸型不可水洗树脂的可持续替代品，因为它们的偏差在三个月内可用于诊断和正畸目的。甲基醚溶剂可以提高不可水洗树脂制造铸件的环保性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of dentistry 医学-牙科与口腔外科

CiteScore

7.30

自引率

11.40%

发文量

349

审稿时长

35 days

期刊介绍： The Journal of Dentistry has an open access mirror journal The Journal of Dentistry: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The Journal of Dentistry is the leading international dental journal within the field of Restorative Dentistry. Placing an emphasis on publishing novel and high-quality research papers, the Journal aims to influence the practice of dentistry at clinician, research, industry and policy-maker level on an international basis. Topics covered include the management of dental disease, periodontology, endodontology, operative dentistry, fixed and removable prosthodontics, dental biomaterials science, long-term clinical trials including epidemiology and oral health, technology transfer of new scientific instrumentation or procedures, as well as clinically relevant oral biology and translational research. The Journal of Dentistry will publish original scientific research papers including short communications. It is also interested in publishing review articles and leaders in themed areas which will be linked to new scientific research. Conference proceedings are also welcome and expressions of interest should be communicated to the Editor.