Occlusal Analysis of Algorithm-designed Restoration Using Different Virtual Articulator Parameters: A Preliminary Study

IF 3.2 3区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

International dental journal Pub Date : 2025-07-15 DOI:10.1016/j.identj.2025.100901

Shan-lin Guo , Xiao He , Zhi Tang , Bing-ying Xie , Min-jie Mao , Xiao-qing Shen , Yuan-ming Geng , Wei Li

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引用次数: 0

Abstract

Introduction and aims

To investigate how different virtual articulator parameter settings influence clinical outcomes of posterior CAD/CAM restorations designed with the CEREC system's biogeneric model, specifically regarding occlusal rehabilitation.

Methods

Twenty participants (11 females, 9 males; mean age 35.50 ± 5.23 years) each received four crowns designed under one of four protocols: (1) No Virtual Articulator Parameters (NVAP), (2) Mean Virtual Articulator Parameters (MVAP), (3) Partially Personalised Virtual Articulator Parameters (PPVAP), and (4) Fully Personalised Virtual Articulator Parameters (FPVAP). Subjective comfort was assessed via the Visual Analogue Scale and Likert scale. Intraoral scans were analysed using Geomagic Control X 2020 software to assess occlusal contact areas and points at single-tooth and full-arch levels. One-year restoration survival was not recorded.

Results

MVAP and FPVAP showed significantly lower Visual Analogue Scale scores than NVAP (P = .0084, P = .0002, respectively). Likert scale ratings did not differ among groups (P = .9921). All crown designs reduced occlusal contact areas compared to the pre-preparation state (P < .05), with FPVAP exhibiting the most favorable outcomes, though not significantly different from other designs. Full-arch analysis revealed no significant changes in contact areas (P = .2645) or contact points (P = .5015). Two NVAP restorations fractured within one year (P = .0348), indicating a trend favoring increased parameter personalization.

Conclusions

Mean-value or fully personalised virtual articulator parameters in CAD/CAM crown design yield superior patient comfort and maintain more accurate occlusal relationships compared to non-personalised approaches. Mean-value settings present a practical option for general clinical use, although larger-scale studies with extended follow-up are recommended.

Clinical relevance

By integrating mean-value or fully personalised virtual articulator parameters into CAD/CAM restoration workflows, clinicians can significantly enhance patient comfort and occlusal accuracy. These findings highlight the importance of tailoring design parameters in routine practice to improve restoration outcomes and potentially lower the likelihood of failure.

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不同虚拟关节器参数的算法修复的咬合分析：初步研究

研究不同虚拟关节器参数设置如何影响使用CEREC系统的生物仿制模型设计的后路CAD/CAM修复体的临床结果，特别是在咬合康复方面。方法共20例受试者，其中女性11例，男性9例；平均年龄35.50±5.23岁)，每个患者接受四种方案之一设计的冠：(1)无虚拟关节参数（NVAP），(2)平均虚拟关节参数（MVAP），(3)部分个性化虚拟关节参数（PPVAP），(4)完全个性化虚拟关节参数（FPVAP）。主观舒适度通过视觉模拟量表和李克特量表进行评估。使用Geomagic Control X 2020软件分析口腔内扫描，以评估单牙和全弓水平的咬合接触区域和点。未记录1年恢复生存率。结果smvap和FPVAP的视觉模拟量表评分明显低于NVAP （P = 0.0084, P = 0.0002）。各组间Likert量表评分无差异（P = .9921）。与预备状态相比，所有冠设计都减少了咬合接触面积(P <；.05)， FPVAP表现出最有利的结果，尽管与其他设计没有显著差异。全弓分析显示接触面积（P = .2645）和接触点（P = .5015）无显著变化。2个NVAP修复体在一年内骨折（P = .0348），表明参数个性化的趋势增加。结论在CAD/CAM冠设计中，与非个性化入路相比，均值或完全个性化的虚拟义齿参数使患者更舒适，并保持更准确的咬合关系。平均值设置为一般临床使用提供了一个实用的选择，尽管建议进行更大规模的随访研究。临床相关性通过将平均值或完全个性化的虚拟关节参数集成到CAD/CAM修复工作流程中，临床医生可以显着提高患者的舒适度和咬合准确性。这些发现强调了在日常实践中定制设计参数的重要性，以改善修复结果并潜在地降低失败的可能性。

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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来源期刊

International dental journal 医学-牙科与口腔外科

CiteScore

4.80

自引率

6.10%

发文量

159

审稿时长

63 days

期刊介绍： The International Dental Journal features peer-reviewed, scientific articles relevant to international oral health issues, as well as practical, informative articles aimed at clinicians.