Inspektor Research Systems

Early diagnosis of oral health



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Improve your diagnostic power and share the results


QLF-D Camera

QLF-D Biluminator™ 3

Our new 2nd generation QLF-Digital systems and its proprietary software suites are available in various configurations, serving clinical and/or R&D professionals. You'll find all turn key sets available at our products page for research and clinical use.


The Qraycam brings the QLF-D Biluminator functionality to the dental chair: light-weight, beautifully designed and very easy to handle, the Qraycam, together with the flexible and intuitive Qray software brings QLF™ to the dental chair. Stop messing around with plaque disclosing dye and start clean, fast and objective plaque measurement now!



New site for Dutch dental professionals
A new site has been opened that focuses on clinical applications of QLF. Qraydental website

New publications Read More ...

New information about QLF™

Introduction of the Qraycam P. Crielaars: The importance of QLF Approximal caries detection
Validation of QLF for the detection of approximal caries
Demonstration of the use of the Qraycam and the Qscan (Dutch, no subtitles yet) Vision of the importance of QLF by Dr. Peter Crielaers (Dutch, no subtitles yet) Article showing the validity of QLF for the detection of approximal caries with a very elegant study setup

Inspektor: Evidence Based Diagnostics

Quantitative Light Induced Fluorescence (QLF™), a patented technology developed by Inspektor Research Systems, is the first technology that reliably detects and monitors early stages of tooth decay and its cause: active bacteria that produce the acids that dissolve tooth-tissue, making it susceptible to decay. QLF™ is the first technology ... Read more

White spot as seen by normal white light and fluorescence

Extended vision Extend the power of your professional eye with QLF™. >>>
Quantify your diagnosis Put concrete numbers to demineralization and bacterial activity. >>>
Monitor your treatment Show the effectiveness of your actions. >>> 
Share it with your patients! QLF™ redefines patient communication and compliance. >>>