Author ORCID Identifier
Master of Science in Dentistry
Purpose: To evaluate the reproducibility and accuracy of the virtual occlusal record compared to the gold standard physical bite record
Methods: Two physical bite records of PVS and two virtual bites using an iTero Element scanner were obtained from 22 participants. Intraoral scans were exported as STL files, and virtual occlusal records were created. CBCT images were taken of physical occlusal records and converted to STL files. STL files were superimposed using Geomagic Control X™ Software. Root mean square (RMS) and percent similarity within 0.25 mm tolerance were compared at a significance level of 0.05.
Results: Average RMS between physical records was 0.34, which was significantly higher than repeat virtual bite comparisons (p<0.0001), with an average percent within tolerance of 76.33%, which was significantly lower than repeat virtual bite comparisons (p<0.0001). Average RMS between repeated virtual records was 0.12 with an average percent within tolerance of 97.84%. Average RMS between physical and virtual records was 0.61, which was significantly higher than both repeat comparisons for physical and virtual records (p<0.0001), with an average percent within tolerance of 50.88%, which was significantly lower than both repeat comparisons for physical and virtual records (p<0.0001).
Conclusion: Virtual occlusal records are significantly more reproducible than physical occlusal records. Statistically and clinically significant differences exist between virtual and physical records. Some of the differences could have been due to variations in the physical bite records themselves. Virtual occlusal records may be more accurate than physical bite records, but additional research is needed to confirm this.
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Available for download on Tuesday, May 10, 2022