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

作者：Shan-lin Guo, Xiao He, Zhi Tang, Bo Xie, Minjie Mao, Xiao‐Qing Shen, Yuan‐ming Geng, Wei Li · 发表于：International Dental Journal · 年份：2025 · DOI：10.1016/j.identj.2025.100901 · 被引用次数：8 · 研究领域：Temporomandibular Joint Disorders、Dental materials and restorations、Orthodontics and Dentofacial Orthopedics

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 inc...