Positional accuracy of four die tray systems.

Area of Science:

• Dental materials science
• Prosthodontics
• Manufacturing and precision engineering

Background:

• Accurate reproduction of prepared teeth is crucial for fabricating dental prosthetics.
• Die tray systems are used to capture precise impressions for dental models.
• Evaluating the positional accuracy of different die tray systems is essential for clinical success.

Purpose of the Study:

• To compare the positional accuracy of four distinct die tray systems.
• To identify any significant positional changes in dies across different tray systems.

Main Methods:

• Utilized an Olympus binocular scanning tunneling microscope (STM) for precise measurements.
• Measured positional change by comparing preremoval and postremoval die positions.
• Evaluated four die tray systems: Accu*trac Precision, Model-Tray, Sterdo Split, and Tricodent One*Cast.

Main Results:

• All four die tray systems demonstrated comparable positional accuracy in most measured categories.
• The Model-Tray system exhibited a statistically significant difference in one measurement category compared to the others.
• No significant positional differences were found between Accu*trac Precision, Sterdo Split, and Tricodent One*Cast systems.

Conclusions:

• The evaluated die tray systems generally offer reliable positional accuracy for dental dies.
• The Model-Tray system may present limitations in specific applications due to its significant difference in one measurement.
• Further research could explore the clinical implications of these positional differences in prosthetic fabrication.