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Accuracy of Vertical Dimension Augmentation Using Different Digital Methods Compared to a Clinical Situation-A Pilot
The International Journal of Prosthodontics
|July 9, 2020
Summary
Digital vertical dimension augmentation (VDA) accuracy was tested. Combining 85% rotation and 15% translation in digital VDA provides results closest to clinical situations, improving accuracy.
Area of Science:
- Dentistry
- Digital Dentistry
- Prosthodontics
Background:
- Accurate digital vertical dimension augmentation (VDA) is crucial in dentistry.
- Evaluating different digital VDA methods against clinical reality is necessary.
Purpose of the Study:
- To compare the accuracy of various digital vertical dimension augmentation (VDA) methods against a clinical benchmark.
- To identify the optimal digital VDA technique for clinical application.
Main Methods:
- Ten subjects underwent VDA bite registrations (approx. 5mm).
- Conventional and VDA casts were digitized; lateral portraits were used for condylar axis reference.
- Four digital VDA methods (100% rotation, 85% rotation/15% translation, virtual articulator, jaw-motion analysis) were compared to a control group using 3D analysis software.
Main Results:
- The posterior/anterior (P/A) ratio indicated accuracy differences between methods.
- Jaw-motion analysis (JMA) showed significant differences compared to the control and 85% rotation/15% translation groups (P < .05).
- Translational movement significantly improved digital VDA accuracy, with lateral picture reference being secondary.
Conclusions:
- Digital VDA using 100% rotation in a virtual articulator leads to inaccuracies compared to clinical results.
- A digital VDA setting of 85% rotation and 15% translation yields outcomes closest to the actual clinical situation.
