时间标签：数据日期 2026-10-31 · 生成时间 2026-11-01 05:30（Asia/Shanghai）｜ 检索窗口 PubMed edat 2026/10/28–2026/10/31 ｜ 情报发生日期 2026-10-31
研究问题
However, insufficient mechanical strength to withstand long-term occlusal forces, limited repairability, susceptibility to staining owing to surface porosity, and challenges in achieving long-term dimensional stability remain major limitations of traditional flexible dentures.；Nevertheless, limitations persist, including restricted material options, lower mechanical strength than those of conventionally processed resins, and challenges in postprocessing. 3D printing has been widely applied in dentistry for producing diagnostic models and surgical guides, as well as for the fabrication of removable and fixed dental prostheses, interim restorations, and maxillofacial prostheses.；A clinical challenge with dentures is reduced retention resulting from alveolar bone resorption and alterations in the supporting mucosal tissues.
方法
After printing, residual resin was removed by cleaning the specimens in 75% ethanol for 3 min using an ultrasonic cleaner (FabWash; Shining 3D), followed by thorough drying.；For the evaluation of the SBS (n = 10), each specimen was mounted and secured in a universal testing machine (EZ-LX; Shimadzu, Kyoto, Japan) using a supporting metal jig.；Statistical analyses were carried out using SPSS version 27.0 (IBM Corp., Armonk, NY, USA).
核心结论
The effects of flexible dentures and reline materials, as well as their interaction, significantly influenced SBS (P < .001).；The Bright-U and TFDH-U groups showed significantly higher SBS than the Bright-R and TFDH-R groups (P < .001).；Within the groups relined with U, the Bright-U and TFDH-U groups exhibited significantly higher SBS values than the Con-U group (P < .001) (). ‖ 结论：From a clinical perspective, although the bond strength of 3D-printed flexible denture resins is generally lower than that of hard denture base resins and hard chairside reline materials, our findings indicate that a reliable and clinically acceptable bond can still be established for repairing and relining.
局限
The clinically appropriate bond strength of reline materials for flexible dentures remains undefined owing to the lack of established standards.；This limitation is severely exacerbated when the Bright resin is bonded with reline material R’s high-molecular-weight monomers, resulting in weak, superficial adhesion.；Further studies using various materials, surface treatment methods, and aging protocols are needed to provide deeper insights.
对本项目的价值
★☆☆☆☆ 相关范围内，作为背景与横向对照收录。
全文来源
PMC JATS 全文（正文 20,558 字符，已过标题/DOI 逐字归属校验）
原文题录
- 英文标题：Evaluation of shear bond strength of 3D-printed flexible denture materials and reline materials.
- 期刊与标识：J Adv Prosthodont · PMID 42948843 · DOI 10.4047/jap.2026.18.5.410
B 级证据分级：B 级（同行评议临床前研究，主要为动物模型）
本文核心结论来自动物模型或体外细胞学，属临床前证据，不能外推至人体。「延长健康寿命」「改善功能」等表述在小鼠中的意义，与人类临床结局之间仍有距离。
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