The Fluorescence-aided Identification Technique is a practicable, fast, and reliable approach for the differentiation of composite resin restorations from tooth substance, and facilitates the minimally invasive and complete removal of composite resin restorations and composite bonded trauma splints.
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Method Article
Detection and Removal of Tooth-Colored Composite Resin Using the Fluorescence-Aided Identification Technique
* These authors contributed equally
In This Article
Summary
Abstract
The detection and removal of tooth-colored filling materials is a major challenge for every dentist. The Fluorescence-aided Identification Technique (FIT) is a noninvasive tool to facilitate the distinction of composite resin material from sound tooth substance. Compared to conventional illumination, FIT is a very accurate, reliable, and fast diagnostic method. When composite resin is illuminated with a wavelength of approximately 398 ± 5 nm, certain fluorescent components make the composite resin appear brighter than the tooth structure. Any fluorescence-inducing light source with the appropriate wavelength can be used for this method. Optimally, this technique is used without additional natural or artificial lighting. The application of FIT can be used for diagnostic purposes, for example, dental charts, and additionally for the complete and minimally invasive removal of composite resin restorations, bracket debonding, and trauma splint removal. The assessment of volumetric changes after composite removal can be provided by overlapping pre- and postoperative scans and subsequent calculation using suitable software.
Introduction
The application of FIT facilitates the distinction of composite resin materials from sound tooth substance compared to conventional illumination, for example, by a dental unit lamp1,2. Fluorescence occurs when a material emits the light at a higher wavelength than it has been absorbed. As a result of this illumination, the material appears brighter than the tooth3. The maximum fluorescence of composite resin materials occurs when illuminated by a wavelength of 398 ± 5 nanometers3. Fluorescence in composite resin materials appears due to rare earth oxides added to the gla....
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Protocol
The teeth used in this study were part of a project approved by the local Ethics Committee (EKNZ UBE-15/111). The participants provided written informed consent, and all data were de-identified to protect patient confidentiality.
1. Detection of tooth colored composite resin material using FIT
- Darken the room (natural and artificial light).
- Wear clear or yellow-tinted safety glasses with UV protection.
- Use a fluorescence-inducing light source to illuminate the tooth substance and tooth-colored composite resin restoration (Figure 1).
NOTE: The composite res....
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Results
Usage of the FIT method makes most composite resin materials appear brighter than sound tooth structure (Figure 2 and Figure 5). Therefore, FIT is applicable not only in the detection of composite resin material, but it also facilitates the removal of composite resin materials in general, and explicitly in posterior teeth, during orthodontic bracket debonding and in trauma splint removal1,2,
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Discussion
The conventional illumination (for example by a dental unit lamp) is an unsatisfactory diagnostic tool for the identification of composite resin restorations. For superior diagnostics with conventional illumination, a magnification aid, drying, or even effortful cleaning of the teeth is necessary. Even under ideal circumstances, conventional illumination seems to be insufficient. A study showed that conventional illumination may lead to misdetection of composite resin restorations and sound tooth substance
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Disclosures
All authors declare that they have no conflict of interest.
Acknowledgements
This study was supported by a research grant from the Swiss Dental Association (SSO Research Grant 292-16).
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Materials
| Name | Company | Catalog Number | Comments |
|---|---|---|---|
| Bonding Resin Remover, H22ALGK 016 | Komet Dental, Lemgo, Germany | Any other material/equpiment with the same function/purpose might be used. | |
| Cerec Omicam, Connect SW 5.1.3 | Dentsply Sirona, York, PA, USA | Any other material/equpiment with the same function/purpose might be used. | |
| Diamant bur | Intensiv SA, Montagnola, Switzerland | Any other material/equpiment with the same function/purpose might be used. | |
| Mandrell | 3M, Saint Paul, MN, USA | Any other material/equpiment with the same function/purpose might be used. | |
| MASTERmatic | KaVo Dental GmbH, Biberach, Germany | Any other material/equpiment with the same function/purpose might be used. | |
| Occlubrush | Kerr, Orange, CA, USA | brush polishing system | |
| OraCheck Software, Version 5.0.0 | Cyfex AG, Zurich, Switzerland | Any other material/equpiment with the same function/purpose might be used. | |
| SIROInspect | Dentsply Sirona, York, PA, USA | Any other material/equpiment with the same function/purpose might be used. | |
| Sof-Lex | 3M, Saint Paul, MN, USA | Contouring/polishing discs; any other material/equpiment with the same function/purpose might be used. |
References
- Meller, C., Connert, T., Löst, C., ElAyouti, A. Reliability of a Fluorescence-aided Identification Technique (FIT) for detecting tooth-colored restorations: an ex vivo comparative study. Clinical Oral Investigations. 21 (1), 347-355 (2017).
- Kiran, R., Chapman, J., Tennant, M., Forrest, A., Walsh, L. J.
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