Preliminary Clinical Study – Luca Lepidi
Preliminary clinical study of the accuracy of a digital axiographic recording system for the assessment of sagittal condylar inclination
Luca Lepidi, Francesco Grande, Giuseppe Baldassarre, Carmela Suriano, Junying Li, Santo Catapano
Objectives
The aim of this study was to clinically evaluate the accuracy of a digital axiographic recording system in tracing the sagittal condylar inclination.
Methods
An axiographic examination that records the sagittal condylar path during protrusive/retrusive movement was performed on ten patients. Each subject was registered five different times by two different systems: 1) the Cadiax Gamma Diagnostic 4 computerized system as the control; 2) the Zebris Jaw Motion Analyser+ Optic System as the tested digital axiographic recording system. The records obtained allow to calculate the kinematic terminal transverse horizontal axis and the sagittal condylar inclination (SCI) at 3 and 5 mm along the pro-retrusive path. A linear mixed model was used to analyze if there was a statistically significant difference between the two systems.
Results
The mean left SCI value recorded by Zebris system were 49.81 ± 10.64◦ at 3 mm, 48.10 ± 11.04◦ at 5 mm, while the values recorded by Gamma system were 55.16◦ at 3 mm, 52.18◦ at 5 mm. The mean right SCI value recorded by Zebris system were 54.53 ± 10.26◦ at 3 mm, 51.85 ± 8.55◦ at 5 mm, while the values recorded by Gamma system were 49.68◦ at 3 mm, 48.23◦ at 5 mm. Linear mixed model showed no significant statistical difference between the two systems.
Conclusions
Based on preliminary results, the Zebris Jaw Motion Analyzer+ Optic System demonstrates comparable accuracy to the Cadiax Gamma Diagnostic 4 when measuring sagittal condylar inclination.
Clinical significance
The digital axiographic recording system enables to evaluate sagittal condylar inclination and to adjust virtual articulators in a digital workflow.
