口腔医学研究

口腔医学研究 ›› 2026, Vol. 42 ›› Issue (8): 667-673.DOI: 10.13701/j.cnki.kqyxyj.2026.08.006

• 口腔修复学研究 • 上一篇    下一篇

基于数字化牙槽嵴顶间线角测量的个性化排牙对全口义齿稳定性的影响研究

杨双, 黄超仪, 余培, 吕胡玲, 吴哲*   

  1. 广州医科大学附属口腔医院修复科,广东省口腔组织修复与重建工程技术研究中心,广州市口腔再生医学基础与应用研究重点实验室 广东 广州 510140
  • 收稿日期:2025-10-23 出版日期:2026-08-28 发布日期:2026-08-17
  • 通讯作者: *吴哲,E-mail:158144577@qq.com
  • 作者简介:杨双(1990~ ),女,湖北随州人,硕士,主治医师,研究方向:数字化修复、全口义齿。
  • 基金资助:
    广州地区临床高新和重大技术项目(编号:2024C-GX36)

Effect of Individualized Tooth Arrangement Based on Digital Measurement of Intercrestal Line Angle on Stability of Complete Dentures

YANG Shuang, HUANG Chaoyi, YU Pei, LV Huling, WU Zhe*   

  1. Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou 510140, China
  • Received:2025-10-23 Online:2026-08-28 Published:2026-08-17

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摘要： 目的: 本研究基于数字化技术测量无牙颌患者的牙槽嵴顶间线角(intercrestal line angle,ICLA),并据此开展个性化排牙设计。旨在实现ICLA参数在全口义齿人工牙排列中的临床转化应用,以提升全口义齿的稳定性。方法: 本研究纳入2022年12月~2024年6月广州医科大学附属口腔医院修复科接受全口义齿修复治疗的无牙颌患者,所有患者均按照全口义齿制作标准流程完成闭口式功能性印模及颌位关系记录,通过扫描阴模建立数字模型,对照组采用3 Shape Dental System排牙软件,确立排牙参考点并直接进行系统自动排牙,技师依据经验进行调整;实验组在自动排牙基础上,使用同一软件测量双侧上下第一磨牙区域的ICLA,并依据ICLA数值对排牙方案进行个性化调整。两组均完成数字化设计并分别打印诊断义齿,于临床试戴阶段对比义齿稳定性,T-Scan咬合分析系统评估牙合力分布情况,戴牙后采用满意度调查问卷评估主观体验。结果: 本研究共纳入16例无牙颌患者,诊断义齿试戴阶段,实验组诊断义齿在单颌稳定性检查及咬合检查中的稳定性优于对照组,表现为义齿翘动与位移现象明显减少。T-Scan咬合分析结果显示,实验组牙合力左右分布更对称,咬合平衡性指标显著优于对照组。满意度问卷结果表明,患者在“咀嚼能力”、“舒适度”、“稳定性”等维度的评分均较高。结论: 基于数字化测得的ICLA进行个性化排牙,在短期试戴阶段可改善义齿的稳定性及咬合力分布,提高患者戴牙后主观体验。

关键词: 牙槽嵴顶间线角, 全口牙齿排牙, 义齿稳定性, 数字化技术

Abstract: Objective: To quantify the intercrestal line angle (ICLA) in edentulous patients using digital technology and to translate the ICLA parameter into clinical practice for improving the stability of complete dentures. Methods: Sixteen edentulous patients who received complete denture treatment at the Department of Prosthodontics, Guangzhou Medical University, from December 2022 to June 2024 were included. All participants were taken functional closed-mouth impression and recorded jaw relation according to standard protocols. Digital casts were obtained by scanning the definitive impressions. In the control group, automatic tooth arrangement was performed using the 3Shape Dental System software, the technician makes adjustments based on experience. In the experimental group, the ICLA was measured bilaterally at the first molar regions within the same software, and tooth arrangement was then adjusted accordingly to achieve individualized alignment. Diagnostic dentures were designed and 3D printed for both groups. During clinical try-in, denture stability was compared, occlusal force distribution was evaluated using the T-Scan system, and patient satisfaction was assessed through questionnaires. Results: A total of 16 edentulous patients were enrolled in this study. During the diagnostic denture trial wear phase, the experimental group exhibited superior stability in maxillary/mandibular stability examination and occlusal examination compared with the control group, characterized by a significant reduction in denture tilting and displacement. T-Scan occlusal analysis results showed that the experimental group had more symmetrical left-right occlusal force distribution, with significantly better occlusal balance indicators than the control group. Satisfaction questionnaire results indicated that patients scored high in dimensions such as "masticatory ability", "comfort", and "stability". Conclusion: Personalized tooth arrangement based on digitally measured ICLA can improve denture stability, occlusal force distribution, and patients' subjective post-insertion experience during the short-term trial wear phase.

Key words: intercrestal line angle, tooth arrangement, denture stability, digital technology