CAD-CAM vs. conventional denture bases: a systematic review with network meta-analysis of in vitro studies comparing strength, hardness, toughness, and elastic properties.

IF 1.8 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
Frontiers in dental medicine Pub Date : 2025-08-11 eCollection Date: 2025-01-01 DOI:10.3389/fdmed.2025.1638794
Rohit Kunnath Menon, Hui Xin Yew, Benjamin Chen Tze Wei, Farah Mohammed Ramadan, Afraa Ibrahim Soliman, Sajesh Veettil
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引用次数: 0

Abstract

Background: Scientific evidence from in vitro studies comparing the mechanical properties of dentures fabricated with computer-aided design-computer-aided manufacturing (CAD-CAM) and conventional techniques is inconclusive. This systematic review with meta-analysis was conducted to analyze the current evidence comparing the mechanical properties of conventional and digitally fabricated denture bases from in vitro studies.

Materials and methods: A systematic search was conducted in PubMed, Scopus, and Medline for in vitro studies from inception until 16 January 2025. The review had been registered with the International Prospective Register of Systematic Reviews PROSPERO: CRD42024531425). A network meta-analysis compared conventional and digitally fabricated denture bases' flexural strength, hardness, flexural modulus, elastic modulus, impact strength, fracture toughness, yield point, and toughness. Risk of bias was assessed by using RoBDEMAT (RoB 2.0).

Results: 4,994 articles were identified, 966 duplicates were removed, 3,971 were excluded by title and abstract screening, 57 were assessed by full-text reading, and 42 were included in the quantitative synthesis. As per the sensitivity analysis performed after excluding low-quality studies, the network meta-analysis results indicate that milled digital denture bases exhibit higher flexural strength [SMD = 2.13 (95% CI: 0.21, 4.05)] compared to 3D-printed digitally fabricated denture bases. Bias incorporated from higher values from one study diminishes the quality of evidence for impact strength and flexural modulus.

Conclusion: Milled digital denture bases exhibit superior flexural strength to 3D-printed and conventionally fabricated denture bases under laboratory conditions. High-quality in vitro studies are recommended to provide conclusive evidence for other mechanical properties.

Systematic review registration: PROSPERO CRD42024531425.

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CAD-CAM与传统义齿基托:一项对体外强度、硬度、韧性和弹性性能比较研究的网络荟萃分析的系统综述。
背景:通过比较计算机辅助设计-计算机辅助制造(CAD-CAM)和传统技术制作的义齿的机械性能的体外研究得出的科学证据尚无定论。本系统综述结合荟萃分析分析了目前的证据,比较了体外研究中传统义齿基托和数字制造义齿基托的机械性能。材料和方法:在PubMed, Scopus和Medline中进行了系统检索,从开始到2025年1月16日进行了体外研究。该综述已在国际前瞻性系统综述登记册(PROSPERO: CRD42024531425)注册。一项网络荟萃分析比较了传统和数字制造义齿基托的弯曲强度、硬度、弯曲模量、弹性模量、冲击强度、断裂韧性、屈服点和韧性。使用RoBDEMAT (rob2.0)评估偏倚风险。结果:共鉴定出4994篇文献,删除重复文献966篇,标题和摘要筛选排除3971篇,全文阅读评估57篇,定量综合纳入42篇。根据排除低质量研究后进行的敏感性分析,网络荟萃分析结果表明,与3d打印数字制造义齿基托相比,磨铣义齿基托具有更高的抗弯强度[SMD = 2.13 (95% CI: 0.21, 4.05)]。来自一项研究的较高值的偏差降低了冲击强度和弯曲模量的证据质量。结论:在实验室条件下,磨铣义齿基托比3d打印和传统制作的义齿基托具有更好的抗弯强度。建议进行高质量的体外研究,为其他机械性能提供确凿证据。系统评价注册:PROSPERO CRD42024531425。
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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CiteScore
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