Emission properties of dental materials and hard dental tissues

Dąbrowski, M.; Dulski, R.; Żmuda, S.; Zaborowski, P

doi:10.21611/qirt.2000.003

Cited by 3 publications

(4 citation statements)

References 4 publications

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“…The distribution of temperatures on the surface of teeth as well as the dynamics of heat transmission through alveolar bone during Nd:YAG laser application within the root canals were analyzed. The values of temperature were corrected, taking into consideration the optical transmission of the quartz plate [3].…”

Section: Analysis Of Resultsmentioning

confidence: 99%

Thermographic method for evaluation of thermal influence of Nd:YAG laser on a tooth root during sterilization process

Madura

Dąbrowski

Dulski

et al. 2004

Infrared Physics & Technology

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Section: Analysis Of Resultsmentioning

confidence: 99%

Thermographic method for evaluation of thermal influence of Nd:YAG laser on a tooth root during sterilization process

Madura

Dąbrowski

Dulski

et al. 2004

Infrared Physics & Technology

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“…Two studies were sourced in a literature search of Medline, Web of Science, and Scopus databases up to July 2022, which focused solely on emissivity values of human mineralized tooth tissue ( Dabrowski, et al, 2000 ; Soori, et al, 2020 ). The recent study by Soori, et al (2020 ) reported experimental estimation of human enamel and dentin emissivity to be 0.96 ± 0.01 and 0.92 ± 0.01, respectively, between 20 and 40°C, 0.97 ± 0.01, and 0.93 ± 0.01, respectively, between 40 and 60°C, which lies within previously reported values from thermal studies ( Table 1 ) and reports the variances are due to compositional and structural differences in the tissues, as well as surface quality.…”

Section: Introductionmentioning

confidence: 99%

“…Thermocouples were used internally on the teeth, which could not be applied clinically. Dabrowski, et al (2000 ) reported an enamel emissivity of 0.92 and also recognized the kind of material that affects this parameter. To assist the clinical evaluation of emissivity, a non-invasive method is desirable.…”

Section: Introductionmentioning

confidence: 99%

Emissivity evaluation of human enamel and dentin

et al. 2022

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Background: Human enamel and dentin temperatures have been assessed with non-contact infrared imaging devices for safety and diagnostic capacity and require an emissivity parameter to enable absolute temperature measurements. Emissivity is a ratio of thermal energy emitted from an object of interest, compared to a perfect emitter at a given temperature and wavelength, being dependent on tissue composition, structure, and surface texture. Evaluating the emissivity of human enamel and dentin is varied in the literature and warrants review. The primary aim of this study was to evaluate the emissivity of the external and internal surface of human enamel and dentin, free from acquired or developmental defects, against a known reference point. The secondary aim was to assess the emissivity value of natural caries in enamel and dentin.Method: Fourteen whole human molar teeth were paired within a thermally stable chamber at 30°C. Two additional teeth (one sound and one with natural occlusal caries–ICDAS caries score 4 and radiographic score RB4) were sliced and prepared as 1-mm-thick slices and placed on a hot plate at 30°C within the chamber. A 3M Scotch Super 33 + Black Vinyl Electrical Tape was used for the known emissivity reference-point of 0.96. All samples were allowed to reach thermal equilibrium, and a FLIR SC305 infrared camera recorded the warming sequence. Emissivity values were calculated using the Tape reference point and thermal camera software.Results: The external enamel surface mean emissivity value was 0.96 (SD 0.01, 95% CI 0.96–0.97), whereas the internal enamel surface value was 0.97 (SD 0.01, 95% CI 0.96–0.98). The internal crown-dentin mean emissivity value was 0.94 (SD 0.02, 95% CI 0.92–0.95), whereas the internal root-dentin value was 0.93 (SD 0.02, 95% CI 0.91–0.94) and the surface root-dentin had a value of 0.84 (SD 0.04, 95% CI 0.77–0.91). The mean emissivity value of the internal enamel surface with caries was 0.82 (SD 0.05, 95% CI 0.38–1.25), and the value of the internal crown-dentin with caries was 0.73 (SD 0.08, 95% CI 0.54–0.92).Conclusion: The emissivity values of sound enamel, both internal and external, were similar and higher than those of all sound dentin types in this study. Sound dentin emissivity values diminished from the crown to the root and root surface. The lowest emissivity values were recorded in caries lesions of both tissues. This methodology can improve emissivity acquisition for comparison of absolute temperatures between studies which evaluate thermal safety concerns during dental procedures and may offer a caries diagnostic aid.

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“…Direct, in vivo experimental investigations of temperature changes in tissue (will the temperature exceed acceptable level) are very difficult because of many instrumental and methodological limitations. For these reason investigations have been conducted on experimental stand designed to ensure thermal conditions as close as possible to those "in vivo".Temperature changes were measured by thermovision camera allowed precise control of operation site[4].…”

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confidence: 99%

Thermographic assessment of thermal effects during laser sterilisation of pathological periodontal pocket

Dąbrowski¹,

Dulski²,

Żmuda³

et al. 2004

Proceedings of the 2004 International Conference on Quantitative InfraRed Thermography

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This article evaluates thermal effects during laser-assisted curettage of pathological gingival pocket. The use of thermal imaging camera and a real time recording software allowed to qualify the maximum increases of tissue's temperature as well as to estimate the safe time of laser irradiation on surgical area for selected laser parameters. The main goal of investigation was to evaluate if there is possibility of hard dental tissue damage during laser sterilization. Two kinds of dental lasers were tested: Er:YAG and Nd:YAG. To ensure conditions similar to those occurring in the patient's mouth the investigations was performed using special experimental stand.

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Emission properties of dental materials and hard dental tissues

Abstract: This paper is dedicated to the calculations of the emissivity coefficient of selected dental materials and hard dental tissues, which has decisive meaning to the real temperature measurements using the radiometric equipment e.g. thermovision cameras.

Cited by 3 publications

References 4 publications

Thermographic method for evaluation of thermal influence of Nd:YAG laser on a tooth root during sterilization process

Thermographic method for evaluation of thermal influence of Nd:YAG laser on a tooth root during sterilization process

Emissivity evaluation of human enamel and dentin

Thermographic assessment of thermal effects during laser sterilisation of pathological periodontal pocket

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