口腔医学研究

口腔医学研究 ›› 2025, Vol. 41 ›› Issue (9): 795-799.DOI: 10.13701/j.cnki.kqyxyj.2025.09.010

• 儿童口腔医学研究 • 上一篇    下一篇

3D打印树脂间隙保持器在儿童乳牙早失中的应用:一项包含修复-保持一体化设计的可行性研究

谢菲1,2, 李思成1,2, 霍方毅1,2, 姜凯1,2, 韩晶1,2, 闵艺1,2*   

  1. 1.口颌系统重建与再生全国重点实验室,口腔生物医学教育部重点实验室,口腔医学湖北省重点实验室,武汉大学口腔医(学)院 湖北 武汉 430079;
    2.武汉大学口腔医院沌口院区 湖北 武汉 430062
  • 收稿日期:2025-04-09 出版日期:2025-09-28 发布日期:2025-09-24
  • 通讯作者: * 闵艺,E-mail:minyi795@whu.edu.cn
  • 作者简介:谢菲(1978~ ),女,武汉人,本科,主治医师,研究方向:数字化口腔修复。
  • 基金资助:
    湖北省自然科学基金一般面上项目(编号:2024AFB721)

Feasibility Study on 3D Printed Resin Space Maintainers Incorporating Integrated Restoration-maintenance Design for Premature Loss of Primary Teeth in Children

XIE Fei1,2, LI Sicheng1,2, HUO Fangyi1,2, JIANG Kai1,2, HAN Jing1,2, MIN Yi1,2*   

  1. 1. The State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China;
    2. Zhuankou Branch, Hospital of Stomatology, Wuhan University, Wuhan 430062, China
  • Received:2025-04-09 Online:2025-09-28 Published:2025-09-24

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摘要： 目的: 探讨椅旁数字化流程及三维(three-dimensional,3D)打印技术制作树脂间隙保持器(含修复-保持一体化设计)治疗儿童乳牙早失的临床可行性研究与初步效果。方法: 选取12例5~8岁单颗乳磨牙早失患儿为研究对象。采用椅旁数字化流程[口内扫描、计算机辅助设计(computer aided design,CAD) 、3D打印、后处理]制作间隙保持器,当日完成试戴、调牙合与粘接。记录椅旁操作时间、患儿舒适度、保持器密合度及家长满意度。6个月后随访,评估保持器固位、完整性以及间隙维持效果。结果: 12例患儿均成功当日完成佩戴树脂间隙保持器(简单型8例,修复-保持一体化型4例)。平均椅旁操作时间(扫描至粘接完成)为(53.6±3.9) min。患儿舒适度高,家长满意度达100%。术后6个月随访显示,保持器总体成功率为91.7%(11/12),间隙维持有效,一体化修复效果满意。结论: 应用椅旁数字化流程及3D打印技术制作树脂间隙保持器治疗儿童乳牙早失具有高效、精准、舒适、美观的优点,临床可行性高。修复-保持一体化设计能有效处理基牙缺损病例,简化治疗程序,具有良好的临床应用前景。

关键词: 间隙保持器, 3D打印, 椅旁数字化, 修复-保持一体化, 乳牙早失

Abstract: Objective: To investigate the clinical feasibility and preliminary outcomes of fabricating resin space maintainers (including integrated restoration-maintenance designs) using a chairside digital workflow and 3D printing technology for managing premature loss of primary teeth in children. Methods: Twelve children aged 6-8 years with premature loss of a single primary molar were enrolled. Space maintainers were fabricated via a chairside digital workflow (intraoral scan, CAD design, 3D print, post-process), enabling same-day try-in, adjustment, and cementation. Chairside operating time, patient comfort, appliance fit, and parental satisfaction were recorded. A 6-month follow-up assessed appliance retention, integrity, and space maintenance effectiveness. Results: Twelve resin space maintainers (8 simple, 4 integrated type) were successfully delivered on the same day. The average chairside time (scan to cementation) was approximately (53.6±3.9) min. High levels of patient comfort, and 100% parental satisfaction were reported. At the 6-month follow-up, the overall success rate of 6 months was 91.7% (11/12). Space was effectively maintained, and outcomes for integrated restorations were satisfactory. Conclusion: The chairside digital workflow utilizing 3D printing for resin space maintainers offers an efficient, precise, comfortable, and aesthetic approach for managing premature primary tooth loss in children, demonstrating high clinical feasibility. The integrated restoration-maintenance design effectively addresses cases involving defective abutment teeth, simplifies treatment procedures, and holds significant promise for clinical application.

Key words: space maintainer, 3D printing, chairside digital workflow, integrated restoration-maintenance, premature tooth loss