口腔医学研究

口腔医学研究 ›› 2024, Vol. 40 ›› Issue (2): 142-146.DOI: 10.13701/j.cnki.kqyxyj.2024.02.009

• 口腔正畸学研究 • 上一篇    下一篇

三维打印光敏树脂牙列模型的形态稳定性

吴峻青1,2,3, 吴斌4*, 刘京京1,2,3, 史学明1,2,3, 包涵1,2,3, 曹丹1,2,3, 严斌1,2,3*   

  1. 1.南京医科大学附属口腔医院正畸科 江苏 南京 210029;
    2.江苏省口腔疾病研究重点实验室 江苏 南京 210029;
    3.江苏省口腔转化医学工程研究中心 江苏 南京 210029;
    4.南京林业大学机械电子工程学院 江苏 南京 210037
  • 收稿日期:2023-09-18 出版日期:2024-02-28 发布日期:2024-02-26
  • 通讯作者: *吴斌,E-mail:wubin@njfu.edu.cn 严斌,E-mail:byan@njmu.edu.cn
  • 作者简介:吴峻青(1998~ ),女,合肥人,硕士在读,主要从事口腔正畸学相关研究工作。
  • 基金资助:
    国家重点研发计划子课题(编号:2022YFC2402103) 江苏省重点研发计划临床前沿技术项(编号:BE2022795) 江苏省科教能力提升工程——江苏省研究型医院建设单位(编号:YJXYYJSDW4) 江苏省医学创新中心(编号:CXZX202227)

Morphological Stability of Three-dimensional Printed Photosensitive Resin Dental Models

WU Junqing1,2,3, WU Bin4*, LIU Jingjing1,2,3, SHI Xueming1,2,3, BAO Han1,2,3, CAO Dan1,2,3, YAN Bin1,2,3*   

  1. 1. Department of Orthodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing 210029, China;
    2. Jiangsu Province Key Laboratory of Oral Diseases, Nanjing 210029, China;
    3. Jiangsu Province Engineering Research Center of Stomatological Translation Medicine, Nanjing 210029, China;
    4. College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, China
  • Received:2023-09-18 Online:2024-02-28 Published:2024-02-26

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摘要： 目的:研究放置时间及材料对三维打印光敏树脂牙列模型形态稳定性的影响。方法:两种常用光敏树脂材料(FHD1400、E-Model-Light)分别打印10副牙列模型,在完成打印即刻及放置1、3、7、14、28、60 d扫描成数字化三维模型,重叠生成不同时间点模型重叠热力图,测算平均偏差及变形百分比,测量牙弓前、中、后段宽度及长度随时间的变化量。结果:牙列模型随放置时间延长收缩变形加剧,平均偏差、变形百分比及牙弓长宽收缩量在14 d内迅速增加,14 d时牙弓后段宽度收缩大于0.2 mm,超过临床允许误差范围。所有时间点FHD1400组模型平均偏差及变形百分比显著大于E-Model-Light组(P<0.05)。结论:两种临床常用光敏树脂材料牙列模型形态稳定性欠佳,E-Model-Light组稳定性优于FHD1400组,牙列模型从打印到使用不应超过14 d。

关键词: 三维打印, 光敏树脂, 牙列模型, 形态稳定性

Abstract: Objective: To study the morphological stability of photosensitive resin dental models made from different three-dimensional printing materials. Methods: Resin dental models made from two types of 3D-printed materials were printed, namely FHD1400 group (10 sets) and E-Model-Light group (10 sets). All models were scanned by an optical model scanner instantly after printed and after 1, 3, 7, 14, 28, and 60 days of storage. The heat map was generated by superimposing models at different time points. The average deviation and deformation percentage were calculated, meanwhile, changes of four linear indexes (the anterior, middle, and posterior width and length of the dental arch) of the model were measured. The data were statistically analyzed and the differences were compared among the models. Results: The resin dental model shrunk more with the extension of storage time. The average deviation, deformation percentage, and contraction of arch length and width increased rapidly within 14 days. The width contraction between molars of all models exceeded 0.2 mm after 14 days of storage. Conclusion: The resin dental models printed from two commonly used clinical materials have poor morphological stability and should not be used longer than 14 days after printing. The morphological stability of E-Model-Light group was better than that of FHD1400 group.

Key words: three-dimensional printing, photosensitive resin, dental models, morphological stability