STUDY OF THE INTENSITY OF THE LIGHT FLOW OF DENTAL PHOTOPOLYMERIZERS
Relevance. During the direct restoration of teeth with light-curing composites, it is important to irradiate them from the minimum distance to ensure a sufficient amount of light energy for curing, but this is not always achievable. Objective. To study the dynamics of light intensity from light-...
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Poltava State Medical University
2024-10-01
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| Series: | Український стоматологічний альманах |
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| Online Access: | https://dental-almanac.org/index.php/journal/article/view/679 |
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| author | O.A. Udod H.M. Alihadzhyieva V.M. Talanov |
| author_facet | O.A. Udod H.M. Alihadzhyieva V.M. Talanov |
| author_sort | O.A. Udod |
| collection | DOAJ |
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Relevance. During the direct restoration of teeth with light-curing composites, it is important to irradiate them from the minimum distance to ensure a sufficient amount of light energy for curing, but this is not always achievable.
Objective. To study the dynamics of light intensity from light-curing units with different light sources at varying distances from the photoreceptor under laboratory conditions.
Materials and Methods. Using a laboratory setup, the dynamics of the light output intensity of two halogen and three LED light-curing units were studied at varying distances from the photoreceptor. The results were presented as a percentage of the initial intensity.
Results. The initial light intensity of the first halogen light-curing unit was 510.5±7.8 mW/cm², and the second was 842.7±11.2 mW/cm². As the distance to the photoreceptor increased to 2.0 mm, the light intensity of the first device was 87.3±1.3% of the initial value, and the second was 91.5±1.6%. At a distance of 5.0 mm, the values were 72.8±1.4% and 79.3±1.8%, and at 10.0 mm, they were 53.5±1.1% and 62.6±1.3%, respectively. The initial intensity of the first LED light-curing unit was 1023.4±12.7 mW/cm², the second was 1239.8±14.3 mW/cm², and the third was 1415.7±13.9 mW/cm². At a distance of 2.0 mm from the photoreceptor, the light intensity of the first device was 95.8±1.9%, the second was 97.4±1.4%, and the third was 98.1±1.4%. At a distance of 5.0 mm, the values were 88.3±1.3%, 91.7±1.5%, and 95.2±1.4%, and at 10.0 mm, they were 81.3±1.1%, 84.2±1.2%, and 89.1±1.4%, respectively. The high performance of the LED devices is attributed to the use of a constant intensity light output, but in clinical practice, a "soft start" mode with lower initial values is often used, meaning that the amount of light energy may approach a critical level for initiating complete curing.
Conclusions. To maintain a sufficient amount of light energy in each clinical situation, an analytical assessment is necessary to ensure optimal irradiation conditions for light-curing materials using light-curing units with different intensities and modes.
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| format | Article |
| id | doaj-art-70334d20d17c4ee9be4d265f59df8c64 |
| institution | Kabale University |
| issn | 2409-0255 2410-1427 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Poltava State Medical University |
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| series | Український стоматологічний альманах |
| spelling | doaj-art-70334d20d17c4ee9be4d265f59df8c642025-08-20T03:33:54ZengPoltava State Medical UniversityУкраїнський стоматологічний альманах2409-02552410-14272024-10-01310.31718/2409-0255.3.2024.05679STUDY OF THE INTENSITY OF THE LIGHT FLOW OF DENTAL PHOTOPOLYMERIZERSO.A. Udod0H.M. Alihadzhyieva1V.M. Talanov2Donetsk National Medical University, Kropyvnytskyi, UkraineDonetsk National Medical University, Kropyvnytskyi, UkraineDonetsk National Medical University, Kropyvnytskyi, Ukraine Relevance. During the direct restoration of teeth with light-curing composites, it is important to irradiate them from the minimum distance to ensure a sufficient amount of light energy for curing, but this is not always achievable. Objective. To study the dynamics of light intensity from light-curing units with different light sources at varying distances from the photoreceptor under laboratory conditions. Materials and Methods. Using a laboratory setup, the dynamics of the light output intensity of two halogen and three LED light-curing units were studied at varying distances from the photoreceptor. The results were presented as a percentage of the initial intensity. Results. The initial light intensity of the first halogen light-curing unit was 510.5±7.8 mW/cm², and the second was 842.7±11.2 mW/cm². As the distance to the photoreceptor increased to 2.0 mm, the light intensity of the first device was 87.3±1.3% of the initial value, and the second was 91.5±1.6%. At a distance of 5.0 mm, the values were 72.8±1.4% and 79.3±1.8%, and at 10.0 mm, they were 53.5±1.1% and 62.6±1.3%, respectively. The initial intensity of the first LED light-curing unit was 1023.4±12.7 mW/cm², the second was 1239.8±14.3 mW/cm², and the third was 1415.7±13.9 mW/cm². At a distance of 2.0 mm from the photoreceptor, the light intensity of the first device was 95.8±1.9%, the second was 97.4±1.4%, and the third was 98.1±1.4%. At a distance of 5.0 mm, the values were 88.3±1.3%, 91.7±1.5%, and 95.2±1.4%, and at 10.0 mm, they were 81.3±1.1%, 84.2±1.2%, and 89.1±1.4%, respectively. The high performance of the LED devices is attributed to the use of a constant intensity light output, but in clinical practice, a "soft start" mode with lower initial values is often used, meaning that the amount of light energy may approach a critical level for initiating complete curing. Conclusions. To maintain a sufficient amount of light energy in each clinical situation, an analytical assessment is necessary to ensure optimal irradiation conditions for light-curing materials using light-curing units with different intensities and modes. https://dental-almanac.org/index.php/journal/article/view/679light-curing compositescuringlight energylight intensitylight-curing units |
| spellingShingle | O.A. Udod H.M. Alihadzhyieva V.M. Talanov STUDY OF THE INTENSITY OF THE LIGHT FLOW OF DENTAL PHOTOPOLYMERIZERS Український стоматологічний альманах light-curing composites curing light energy light intensity light-curing units |
| title | STUDY OF THE INTENSITY OF THE LIGHT FLOW OF DENTAL PHOTOPOLYMERIZERS |
| title_full | STUDY OF THE INTENSITY OF THE LIGHT FLOW OF DENTAL PHOTOPOLYMERIZERS |
| title_fullStr | STUDY OF THE INTENSITY OF THE LIGHT FLOW OF DENTAL PHOTOPOLYMERIZERS |
| title_full_unstemmed | STUDY OF THE INTENSITY OF THE LIGHT FLOW OF DENTAL PHOTOPOLYMERIZERS |
| title_short | STUDY OF THE INTENSITY OF THE LIGHT FLOW OF DENTAL PHOTOPOLYMERIZERS |
| title_sort | study of the intensity of the light flow of dental photopolymerizers |
| topic | light-curing composites curing light energy light intensity light-curing units |
| url | https://dental-almanac.org/index.php/journal/article/view/679 |
| work_keys_str_mv | AT oaudod studyoftheintensityofthelightflowofdentalphotopolymerizers AT hmalihadzhyieva studyoftheintensityofthelightflowofdentalphotopolymerizers AT vmtalanov studyoftheintensityofthelightflowofdentalphotopolymerizers |