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Related Concept Videos

Tooth Anatomy01:21

Tooth Anatomy

1.0K
The human tooth enables us to eat a variety of foods, speak clearly, and even aid in shaping our faces. Teeth are composed of various elements that work together. Here's a detailed look at the anatomy of a human tooth.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or...
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Related Experiment Video

Updated: Sep 15, 2025

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
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Occlusal Analysis of Algorithm-designed Restoration Using Different Virtual Articulator Parameters: A Preliminary

Shan-Lin Guo1, Xiao He1, Zhi Tang1

  • 1Department of Stomatology, Zhujiang Hospital, Southern Medical University, Guangzhou, China.

International Dental Journal
|July 16, 2025
PubMed
Summary

Personalized virtual articulator parameters in CAD/CAM crown design significantly improve patient comfort and occlusal accuracy compared to non-personalized settings. Mean-value parameters offer a practical clinical approach for better restoration outcomes.

Keywords:
All-ceramic crownBiogeneric modelCAD/CAMOcclusal contactVirtual articulator

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Area of Science:

  • Digital dentistry
  • Computer-aided design/computer-aided manufacturing (CAD/CAM)
  • Prosthodontics

Background:

  • Virtual articulators are crucial for designing CAD/CAM restorations.
  • Optimizing virtual articulator parameters can enhance clinical outcomes.
  • The impact of parameter personalization on CEREC biogeneric restorations requires investigation.

Purpose of the Study:

  • To evaluate how different virtual articulator parameter settings influence occlusal rehabilitation outcomes in posterior CAD/CAM restorations.
  • To compare subjective patient comfort and objective occlusal accuracy across various parameter personalization levels.

Main Methods:

  • Twenty participants received four CEREC crowns designed with different virtual articulator protocols: No Virtual Articulator Parameters (NVAP), Mean Virtual Articulator Parameters (MVAP), Partially Personalised Virtual Articulator Parameters (PPVAP), and Fully Personalised Virtual Articulator Parameters (FPVAP).
  • Subjective comfort was assessed using Visual Analogue Scale (VAS) and Likert scales.
  • Objective occlusal analysis was performed using Geomagic Control X software to measure contact areas and points.

Main Results:

  • MVAP and FPVAP groups reported significantly lower VAS scores than NVAP, indicating improved patient comfort.
  • All crown designs reduced occlusal contact areas compared to the pre-preparation state, with FPVAP showing the most favorable, though not statistically significant, outcomes.
  • Two NVAP restorations fractured within one year, suggesting a trend towards better durability with personalized parameters.

Conclusions:

  • Utilizing mean-value or fully personalized virtual articulator parameters in CAD/CAM crown design leads to superior patient comfort and more accurate occlusal relationships.
  • Mean-value settings provide a viable option for routine clinical application.
  • Personalization of virtual articulator parameters is important for improving restoration outcomes and potentially reducing failure rates.