Digital Condylar Parameter Assessment Using Cadiax^® 2 and Modjaw^®.

Area of Science:

• Dental Mechanics
• Biomedical Engineering
• Craniomandibular Research

Background:

• Assessing the reliability of condylar movement recording systems is crucial for accurate diagnosis and treatment in dentistry.
• Condylar slope and Bennett angle are key parameters in understanding jaw mechanics.
• Two systems, Modjaw and Cadiax 2, are evaluated for their measurement consistency and comparability.

Purpose of the Study:

• To assess the reliability of Modjaw and Cadiax 2 systems in recording condylar slope and Bennett angle.
• To evaluate if measurements are consistent over time (T0 vs. T1) using the same equipment.
• To compare the condylar slope and Bennett angle values obtained from Modjaw versus Cadiax 2.

Main Methods:

• An observational, descriptive, and prospective study was conducted.
• Twenty-five participants (13 female, 12 male, aged 22-27) were included.
• Measurements of condylar slope and Bennett angle were taken at two time points (T0 and T1) using both devices at 3 mm and 5 mm displacements.

Main Results:

• Both Modjaw and Cadiax 2 demonstrated excellent measurement repeatability (Intraclass Correlation Coefficients > 0.90) between T0 and T1.
• Each system showed high reliability when used independently.
• Significant differences were found in the absolute values of condylar slope and Bennett angle measurements between Modjaw and Cadiax 2.

Conclusions:

• While Modjaw and Cadiax 2 are individually reliable for condylar movement recording, their absolute measurements are not interchangeable.
• Technological differences between the Modjaw and Cadiax 2 systems likely explain the discrepancies in recorded values.
• Clinicians should be aware of these device-specific differences when interpreting condylar movement data.