Comparison of two computerized occlusal analysis systems for indicating occlusal contacts

Area of Science:

• Dental Technology
• Biomedical Engineering
• Occlusion Analysis

Background:

• Accurate identification of occlusal contacts is crucial for dental diagnostics and treatment planning.
• Existing technologies like T-scan provide valuable occlusal data.
• The development of new systems aims to enhance diagnostic capabilities and patient outcomes.

Purpose of the Study:

• To evaluate and compare the performance of the Accura system against the T-scan system.
• To determine Accura's efficacy in indicating occlusal contacts during maximum intercuspation.

Main Methods:

• Twenty-four subjects' maxillary dental casts were scanned and digitally processed.
• Occlusal contacts were recorded using both T-scan and Accura during masticatory cycles.
• Data from both systems were overlapped onto the cast models for comparative analysis.
• Statistical analysis, including McNemar's test, was employed to assess differences.

Main Results:

• No statistically significant differences were observed between the T-scan and Accura methods (P > .05).
• Accura exhibited an accuracy of 75.8%, sensitivity of 82.1%, and specificity of 60.1%.
• Positive predictive value (PPV) was 82.9%, and negative predictive value (NPV) was 60.1%.

Conclusions:

• Accura presents a viable alternative computerized occlusal analysis system.
• The system effectively indicates occlusal contacts at maximum intercuspation.
• Further research may explore Accura's clinical applications and long-term reliability.