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

Smaranda Buduru¹, Sara Hafidi¹, Oana Almășan¹

¹Prosthetic Dentistry and Dental Materials Department, Iuliu Hatieganu University of Medicine and Pharmacy, 400006 Cluj-Napoca, Romania.

Dentistry Journal

|November 26, 2024

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Both Modjaw and Cadiax 2 systems show excellent reliability for recording condylar slope and Bennett angle. However, the absolute values measured by each device differ significantly, likely due to technological variations.

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.

Keywords:

Bennett angle Cadiax 2 Modjaw TMJ digital assessment sagittal condylar inclination

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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.