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Klein C, Sakar K, Voykov B, Meller C. The human fluorescence discrimination as precondition for the use of fluorescence-aided identification techniques (FIT). J Dent 2024; 149:105314. [PMID: 39168231 DOI: 10.1016/j.jdent.2024.105314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2024] [Revised: 08/14/2024] [Accepted: 08/16/2024] [Indexed: 08/23/2024] Open
Abstract
OBJECTIVES The fluorescence-aided identification technique (FIT) is based on the fluorescence properties of dental materials, specifically the intensity of their fluorescence compared to the autofluorescence of hard dental substances; this creates a perceived contrast between dental material and tooth. However, no studies to date have determined the extent to which the fluorescence intensity of tooth-colored dental materials must differ from that of natural autofluorescence to ensure reliable visual detection. The aim of this study was therefore to determine, for the first time, how pronounced the difference between fluorescence intensity and autofluorescence must be to reliably identify tooth-colored material. METHODS Ten dentists assessed six different resin-based composite (RBC) samples of varying fluorescence intensity placed in the cavities of ten extracted teeth under standardized fluorescence-exciting illumination. The outcome variable was fluorescence perceptibility. Their assessments of the outcome variable were compared with measurements of the fluorescence intensities of the RBCs and the surrounding dental hard tissues, which were expressed as a fluorescence intensity ratio. Demographic data of the participants, including age, gender, and professional experience, were also recorded. RESULTS No significant differences were found for visual fluorescence perceptibility in relation to the explanatory variables of gender (p = 0.14), age (p = 0.13), and professional experience (p = 0.34). In contrast, the fluorescence intensity ratio was significantly different (p < 0.0001). SIGNIFICANCE For both clinicians and manufacturers, fluorescence intensity levels are important when selecting or developing FIT-compatible materials. Our results suggest that the fluorescence intensity levels of dental materials should be no more than 75% and no less than 200% of tooth natural autofluorescence to ensure reliable detection of tooth-colored materials.
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Affiliation(s)
- Christian Klein
- Clinic of Conservative and Pediatric Dentistry, Periodontology, and Endodontology, University Hospital for Dentistry, Oral and Maxillofacial Surgery, University Hospital Tübingen, Tübingen, Germany; HealthCare Center Meller Zahngesundheit Schlauzahn MVZ GmbH, Waiblingen, Germany.
| | - Klaudia Sakar
- Clinic of Conservative and Pediatric Dentistry, Periodontology, and Endodontology, University Hospital for Dentistry, Oral and Maxillofacial Surgery, University Hospital Tübingen, Tübingen, Germany
| | - Bogomil Voykov
- Center for Ophthalmology, University Hospital Tübingen, Tübingen, Germany
| | - Christian Meller
- Clinic of Conservative and Pediatric Dentistry, Periodontology, and Endodontology, University Hospital for Dentistry, Oral and Maxillofacial Surgery, University Hospital Tübingen, Tübingen, Germany
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Angelakopoulos N, Anton Y Otero CI, Franco A, Vazquez L, Leprince J, Abdelaziz M. Atlas of Dental Near-Infrared Transillumination Images. Diagnostics (Basel) 2024; 14:1154. [PMID: 38893679 PMCID: PMC11172093 DOI: 10.3390/diagnostics14111154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 05/21/2024] [Accepted: 05/27/2024] [Indexed: 06/21/2024] Open
Abstract
Technological improvements have introduced significant innovations in dentistry and broadened the array of tools and techniques in dental care. One technological development that has been widely researched over the past 20 years is the use of Near-Infrared Transillumination (NIRT) imaging for the diagnosis of dental caries. This paper aims to introduce a comprehensive collection of NIRT images, intended as a reference tool for routine dental examinations, dental research, pedagogical activities, and forensic odontology. The collection presents pairwise clinical and NIRT images categorized as follows: (a) healthy teeth, (b) carious teeth, (c) restored teeth, (d) enamel defects, and (e) diverse findings. This atlas could be a valuable tool for the dental community as it is designed as an identification guide of NIRT illustrated dental features.
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Affiliation(s)
- Nikolaos Angelakopoulos
- Department of Orthodontics and Dentofacial Orthopaedics, University of Bern, 3012 Bern, Switzerland
| | - Clara Isabel Anton Y Otero
- Division of Cariology and Endodontology, University Clinics of Dental Medicine (CUMD), University of Geneva, 1211 Geneva, Switzerland
| | - Ademir Franco
- Division of Forensic Dentistry, Faculdade São Leopoldo Mandic, Campinas 13045-755, Brazil
| | - Lydia Vazquez
- Department of Orofacial Rehabilitation, University Clinics of Dental Medicine (CUMD), University of Geneva, 1211 Geneva, Switzerland
| | - Julian Leprince
- Division of Cariology and Endodontology, University Clinics of Dental Medicine (CUMD), University of Geneva, 1211 Geneva, Switzerland
| | - Marwa Abdelaziz
- Division of Cariology and Endodontology, University Clinics of Dental Medicine (CUMD), University of Geneva, 1211 Geneva, Switzerland
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Bardocz-Veres Z, Székely M, Salamon P, Bala E, Bereczki E, Kerekes-Máthé B. Quantitative and Qualitative Assessment of Fluorescence in Aesthetic Direct Restorations. MATERIALS 2022; 15:ma15134619. [PMID: 35806741 PMCID: PMC9267933 DOI: 10.3390/ma15134619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/28/2022] [Accepted: 06/29/2022] [Indexed: 12/10/2022]
Abstract
Currently available direct restoration materials have been developed to have improved optical properties to interact with light in the same manner as the natural tooth. The objective of this study was to investigate the fluorescence of different enamel resin composites. In the present study, nine brands of enamel composites were tested in vitro, some of which are cited by manufacturers as having color adjustment potential. Fluorescence spectra of the composite specimens and the human natural enamel were measured with a fluorescence spectrophotometer immediately after preparation and after 6 months. Qualitative data of the specimens were also collected. Statistical analyses were conducted by Kruskal−Wallis and Mann−Whitney U nonparametric tests (p < 0.05). Almost all tested resin composites presented a significant decrease in the fluorescence values after a period of 6 months. There was no significant decrease in fluorescence in the case of Harmonize™ resin composite samples, which presented the lowest initial fluorescence values. The highest value in the reduction of the initial fluorescence intensity after 6 months (22.95%) was observed for the Charisma® specimens. Composites with a color adjustment did not perform significantly better than other composites in terms of reduction in fluorescence intensity.
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Affiliation(s)
- Zsuzsanna Bardocz-Veres
- Faculty of Dental Medicine, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureș, 38 Gh. Marinescu Str., 540139 Târgu Mureș, Romania; (Z.B.-V.); (E.B.); (E.B.); (B.K.-M.)
| | - Melinda Székely
- Faculty of Dental Medicine, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureș, 38 Gh. Marinescu Str., 540139 Târgu Mureș, Romania; (Z.B.-V.); (E.B.); (E.B.); (B.K.-M.)
- Correspondence: ; Tel.: +40-744-878-610
| | - Pál Salamon
- Department of Bioengineering, Faculty of Economics, Socio-Human Sciences and Engineering, Sapientia Hungarian University of Transylvania [EMTE], Libertatii sq. 1, 530104 Miercurea Ciuc, Romania;
- Molecular Diagnostics Laboratory, Emergency County Hospital of Miercurea Ciuc, Dr. Denes Laszlo 2, 530173 Miercurea Ciuc, Romania
| | - Előd Bala
- Faculty of Dental Medicine, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureș, 38 Gh. Marinescu Str., 540139 Târgu Mureș, Romania; (Z.B.-V.); (E.B.); (E.B.); (B.K.-M.)
| | - Előd Bereczki
- Faculty of Dental Medicine, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureș, 38 Gh. Marinescu Str., 540139 Târgu Mureș, Romania; (Z.B.-V.); (E.B.); (E.B.); (B.K.-M.)
| | - Bernadette Kerekes-Máthé
- Faculty of Dental Medicine, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureș, 38 Gh. Marinescu Str., 540139 Târgu Mureș, Romania; (Z.B.-V.); (E.B.); (E.B.); (B.K.-M.)
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Guarnieri FDF, Briso ALF, Ramos FDSES, Esteves LMB, Omoto ÉM, Sundfeld RH, Fagundes TC. Use of auxiliary devices during retreatment of direct resin composite veneers. PLoS One 2021; 16:e0252171. [PMID: 34133430 PMCID: PMC8208554 DOI: 10.1371/journal.pone.0252171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 05/11/2021] [Indexed: 12/03/2022] Open
Abstract
The removal of direct composite veneers, when the retreatment is necessary, represents a challenge to the clinician, since the healthy dental structure must be preserved. Thus, the aim of this study was to compare the accuracy provided by different auxiliary devices during retreatment of direct composite veneers. Seventy-five bovine teeth were prepared for direct composite veneers, scanned (T1), and restored. Specimens were divided into 5 groups for retreatment: conventional high-speed handpiece without auxiliary device (WD); high-speed handpiece with a white LED (WL); high-speed handpiece with an UV light (UL); electric motor and multiplier 1/5 handpiece (EM); and conventional high-speed handpiece using magnifying loupe (ML). After retreatments, other scanning was performed (T2). Changes on dental wear or composite residues areas, as well as, the average between wear and presence of residues were measured. Data were submitted to Kruskal-Wallis and Dunn’s post-test (p≤ 0.05). There were greater areas of wear for ML, being statistically superior to WD and EM groups. The ML presented smaller residues areas, being statistically lower than the WD and EM groups. Regarding the average between wear and the presence of resin residues, additional wear occurred after re-preparation, regardless of the group. Magnifying loupe promoted greater areas of wear and smaller areas of resin residues than conventional high-speed handpiece and electric motor. Both techniques using light accessories did not differ from other ones.
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Affiliation(s)
| | - André Luiz Fraga Briso
- Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Araçatuba, SP, Brazil
| | - Fernanda de Souza e Silva Ramos
- Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Araçatuba, SP, Brazil
| | - Lara Maria Bueno Esteves
- Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Araçatuba, SP, Brazil
| | - Érika Mayumi Omoto
- Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Araçatuba, SP, Brazil
| | - Renato Herman Sundfeld
- Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Araçatuba, SP, Brazil
| | - Ticiane Cestari Fagundes
- Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Araçatuba, SP, Brazil
- * E-mail:
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Brokos I, Stavridakis M, Lagouvardos P, Krejci I. Fluorescence intensities of composite resins on photo images. Odontology 2021; 109:615-624. [PMID: 33534002 PMCID: PMC8178134 DOI: 10.1007/s10266-020-00583-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 12/13/2020] [Indexed: 11/18/2022]
Abstract
Recording fluorescence using flash photography, may help reduce time of capture and apply effectively in clinical practice. To test methods for visualizing composite resins fluorescence by direct digital photography. Sixty-four specimen discs (1.5 × 10 mm) were prepared from 8 different composite resin brands. Their CIELAB color coordinates (L*, a*, b*) and fluorescence were measured using a portable colorimeter and a fluorescence spectrophotometer. The mean of three measurements was recorded and then specimens were photographed by a DSLR camera with two different filters (365 nm and 405 nm) mounted on a commercial macro flash. RGB values of all specimens on the photographs were measured by using Photoshop software and converted to CIELab. Data were then analyzed using Kruskal–Wallis and Dunn’s multiple comparisons tests. Correlation and regression analyses were also used to relate fluorescence and color parameters on the photographs at α = 0.05. Fluorescence and color data indicated significant differences among the materials (p < 0.05). L* a* and b* color coordinates from both photographs were highly correlated to fluorescence intensities found by the reference method (r365 − 0.95, r405 − 0.94), while regression analysis indicated a strong linear relationship (R2365 − 0.88, R2405 − 0.89). The study showed that filtered flash photography either by the use of a 365 nm or a 405 nm band pass filter can directly visualize fluorescence of composite resin materials and differences in fluorescence between them.
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Affiliation(s)
- Ioannis Brokos
- Division of Cardiology and Endodontology, University Clinics of Dental Medicine (CUMD), University of Geneva, 1, rue Michel-Servet, 1211 Geneva 4, Switzerland
| | | | - Panos Lagouvardos
- Department of Operative Dentistry, School of Dentistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Ivo Krejci
- Division of Cardiology and Endodontology, University Clinics of Dental Medicine (CUMD), University of Geneva, 1, rue Michel-Servet, 1211 Geneva 4, Switzerland
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