Digital intraoral scanner devices: a validation study based on common evaluation criteria

Area of Science:

• Dental Technology
• Digital Dentistry
• Medical Device Evaluation

Background:

• Intraoral scanners (IOSs) are rapidly evolving with diverse manufacturer-specific properties.
• A lack of uniform rating systems hinders objective comparison of these devices.
• This study validates and compares various IOSs using objective parameters.

Purpose of the Study:

• To develop and apply a scoring system for objective comparison of different intraoral scanners.
• To evaluate and rank 12 intraoral scanners based on defined criteria.
• To assist clinicians in selecting appropriate IOS devices.

Main Methods:

• Twelve different intraoral scanners were evaluated.
• A scoring system was created, assessing devices on summary charts, weight, circumference, in vitro scanning time, data capture pauses, and accuracy.
• Objective and comprehensive parameters were used for evaluation.

Main Results:

• The 3Shape Trios 4 Pod achieved the highest cumulative score (23.37/30), excelling in summary chart and scanning speed.
• CEREC Primescan was the most accurate IOS, despite receiving low comparative assessment points due to its weight.
• GC Aadva scored the lowest (5.73/30), indicating the poorest performance in this evaluation.

Conclusions:

• The developed scoring system effectively differentiates intraoral scanners based on objective parameters.
• Newer generations of IOSs demonstrate enhanced properties and improved accuracy.
• The scoring system provides a valuable tool for clinicians to select the most suitable intraoral scanner.