Inspektor Research Systems

Early diagnosis of oral health



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Improve your diagnostic power and share the results


Practical QLF

The usefulness of QLF™ for the normal clinical practice lies, for some people, primarily in the realm of prevention and patient communication. Below an example of the use of QLF™ for the detection of cracks that are pretty hard, if not impossible, to detect with the naked eye under normal lighting conditions. See the QLF Library under Cracks.


C4 version 1.03 Released
The new version is released on August 7, 2017 Read more ...

NZa assigns code for QLF™
The Dutch Healthcare Authority (NZa) has assigned a reimbursement code for QLF Read more ...

TMR Digital

Newly released products

 c4L.jpg Qraycam qraypen.jpgQrayview Qscan QLFD01.png


In March 2016, the new C4 QLF Research Suite was officially released. C4 is the successor of the previous research suite that consisted of a separate program for image acquisition and image analysis. C4 integrates these two functions and brings the user interface up to date with full touch screen support and more intuitive access.


A lightweight, versatile intra oral QLF™ camera that can be used to zoom in on specific elements of the dentition.


A qualitative QLF™ inspection device for the dental professional. Provides a strong blue light and glasses with the QLF™ filter to allow qualitative inspection of element surfaces.


A qualitative QLF ™inspection device for home care. Allows users to quickly and easily assess the state of their oral hygiene at home.

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 Q-Ray software brings QLF™ to the dental chair. Stop messing around with plaque disclosing dye and start clean, fast and objective plaque measurement now!



New information about QLF™

Introduction of the Qraycam P. Crielaars: The importance of QLF QLF assessment of gingivitis risk
Dynamics of RF Plaque during Gingivitis challenge
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 ability of red fluorescence measured with QLF to differentiate between low, medium and high inflammatory risk.

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. >>>