Fit comparison of interim crowns manufactured with open and proprietary 3D printing modes versus milling technology: An in vitro study

Author:

Morón‐Conejo Belén1,Berrendero Santiago1ORCID,Bai Shizhu2,Martínez‐Rus Francisco1,Pradies Guillermo1

Affiliation:

1. Department of Conservative and Prosthetic Dentistry, Faculty of Dentistry Analysis of Techniques, Material and Instruments applied to Digital Dentistry and CAD/CAM Procedures Research Group, University Complutense Madrid Spain

2. State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Digital Dentistry Center, School of Stomatology The Fourth Military Medical University Xi'an People's Republic of China

Abstract

AbstractObjectivesThis study aimed to assess the fit of interim crowns produced using DLP‐based 3D printing with different manufacturing workflows—open and proprietary—versus milling technology.MethodsA total of 120 crowns were evaluated using the replica technique. The control group (Mill, n = 30) was manufactured via subtractive technology. Experimental groups were printed using a DLP printer (SprintRay Pro95). In the proprietary mode (SR100, n = 30), manufacturer resin was used with a 100‐μm layer thickness (LT) and a splashing cleaning postprocessing. In the open mode, validated resin was used. Group B100 (n = 30) had a 100‐μm LT, and group B50 (n = 30) had a 50‐μm followed by postprocessing in an ultrasonic bath with full immersion in isopropyl alcohol. Kruskal–Wallis tests with Bonferroni correction was applied after normal analysis (α = 0.05).ResultsGroup B50 exhibited the best overall fit (123.87 ± 67.42 μm), which was comparable to the gold standard Milling group, which demonstrated the lowest marginal fit (p = 0.760). SR100 showed significantly poorer performance compared to Mill, B50, and B100 (p < 0.001).Conclusions3D printed and milled interim crowns generally demonstrated clinically acceptable fit, with the exception of the SR100 group. Postprocessing notably influenced crown fit, with the open mode with total immersion in isopropyl alcohol being superior.Clinical SignificanceThe present study demonstrates that the selection of an optimal manufacturing and postprocessing workflow results in superior fit for interim crowns. This enables dental professionals to evaluate protocols and ensure reliable outcomes with improved clinical outcomes in interim crown fabrication.

Publisher

Wiley

Reference26 articles.

1. Assessment of the Adaptation of Interim Crowns using Different Measurement Techniques

2. The estimation of cement film thickness by an in vitro technique;McLean J;Br Dent J,1971

3. Accuracy of Additively Manufactured and Milled Interim 3‐Unit Fixed Dental Prostheses

4. WolfartS WegnerSM Al‐HalabiA KernM.Clinical Evaluation of Marginal Fit of a New Experimental all‐Ceramic System before and after Cementation.2003.

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3