Comparison of optical performance among three dental operating microscopes: A pilot study

Area of Science:

• Dental Technology
• Ophthalmic Optics
• Medical Imaging

Background:

• Resolution and depth of field are critical performance metrics for dental operating microscopes (DOMs).
• Evaluating and comparing these parameters across different DOM models is essential for clinical effectiveness.

Purpose of the Study:

• To evaluate and compare the resolution and depth of field of DOMs from three leading manufacturers.
• To determine which DOM system offers superior optical performance for dental applications.

Main Methods:

• Standardized resolution (1951 USAF Hi-Resolution Target) and depth of field (Depth of Field Target 5-15) tests were conducted.
• Two calibrated observers assessed three DOM systems: Seiler IQ, Global G-Series 6 step, and Zeiss Extaro 300.

Main Results:

• The Zeiss Extaro 300 demonstrated the highest maximum resolution (64 lp/mm) and depth of field (17mm).
• The Seiler IQ exhibited the lowest maximum resolution (35.9 lp/mm) and depth of field (11mm).

Conclusions:

• The Zeiss Extaro 300 outperformed the Seiler IQ and Global G-Series DOMs in both resolution and depth of field.
• These findings suggest the Zeiss Extaro 300 provides enhanced visualization capabilities in dentistry.