Intra-pulpal temperature evaluation during diode laser (445 nm) irradiation for treatment of dentine hypersensitivity: in vitro a pilot study

Morsi, Asmaa; Haidary, Darya; Franzen, René; Gutknecht, Norbert

doi:10.1007/s41547-020-00085-9

Cited by 6 publications

(3 citation statements)

References 13 publications

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“…Investigations of the thermal effect of different lasers on the pulp [18,28,32,38] cannot be confirmed by the results obtained here. However, direct comparison is not possible due to differences in methodology.…”

Section: Discussionmentioning

confidence: 59%

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Thermal Effects on Dental Pulp during Laser-Assisted Bleaching Procedures with Diode Lasers in a Clinical Study

Petersen,

Braun,

Franzen

2024

JCM

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Background In the current cosmetics industry, bleaching is often associated with lasers. However, such treatment also harbors risks. Tooth death is observed at pulpal temperature increases ≥5.6 °C. Therefore, it seems important to investigate the effects of using different lasers. The aim of this study was to determine pulpal temperature increases at different laser parameters during bleaching by modeling a realistic environment and to compare the temperature recording using a thermocouple and thermal camera. The authors assumed that there are laser settings for the lasers used at which the pulpal temperature increases are <5.6 °C and that the temperature recordings with thermocouples and thermal cameras differ only minimally. Methods Human teeth were used, which were extracted for dental reasons. During experiment, teeth were bleached conventionally and by laser activation at 940 nm, 445 nm, and 970 nm. The temperature in the pulp was recorded using thermocouples. In a second setup, longitudinally halved teeth were bleached, while the temperature in the pulp was recorded with a thermocouple and thermal camera. Descriptive statistics were used. The significance level is 0.05. Results In addition to conventional bleaching, temperature increases <5.6 °C were observed for bleaching at 940 nm 1.5 W, at 445 nm 0.3 W, and at 970 nm 0.5 W. For bleaching procedures using 940 nm 7 W, 940 nm 2 W, 445 nm 0.5 W, and 970 nm 1 W, the temperature increase was ≥5.6 °C. Significant differences (p < 0.05) were found in the maximum temperature increases (°C) between all groups. Temperature recordings using a thermocouple and thermal camera differed by about 2.3 °C. The working hypotheses were confirmed. Conclusion With laser bleaching, attention must be paid to the type of laser, its power, and the time in order to avoid excessive overheating of the dental pulp.

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Section: Discussionmentioning

confidence: 59%

“…Increases in pulpal temperature depend on numerous factors, such as the energysupplying medium, the parameters used, the distance between the tooth and the energysupplying medium, the duration of irradiation, and the tooth type [15,18,38,39].…”

Section: Discussionmentioning

confidence: 99%

Thermal Effects on Dental Pulp during Laser-Assisted Bleaching Procedures with Diode Lasers in a Clinical Study

Petersen,

Braun,

Franzen

2024

JCM

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“…Moreover another in vitro study by Morsi et al measured the induced temperature elevation in the case of using a 445-nm diode laser to treat hypersensitivity by irradiating the cervical third of extracted human single-rooted teeth. Here again, the sample number was low (n=10) and the report resulted in safe temperatures only when the diode laser was used in a distance of 1-2 mm from the treatment area and under constant fiber moving of the operator in a scanning mode [10].…”

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confidence: 95%

The blue wavelengths in laser dentistry: a review of current literature

Strakas

Franzen

2023

Laser Dent Sci

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Dental laser applications are steadily increasing in popularity amongst dentists for the last four decades. Although many wavelengths are available for practitioners, semiconductor lasers or commonly known as diode lasers, are still the most popular ones. Dental diode laser devices are available in wavelengths that belong to visible and near infrared region of the electromanetic spectrum. Recently, lasers that are in the area of 400–450 nm have emerged in the market and became available to dentists. In this article, we aim to analyze the clinical possibilities we have with these lasers according to the available literature that has been published so far.

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Temperature changes and thermo-light polymerization efficacy of two LED curing lights and 445-nm diode laser on glass carbomer material

et al. 2021

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Intra-pulpal temperature evaluation during diode laser (445 nm) irradiation for treatment of dentine hypersensitivity: in vitro a pilot study

Cited by 6 publications

References 13 publications

Thermal Effects on Dental Pulp during Laser-Assisted Bleaching Procedures with Diode Lasers in a Clinical Study

Thermal Effects on Dental Pulp during Laser-Assisted Bleaching Procedures with Diode Lasers in a Clinical Study

The blue wavelengths in laser dentistry: a review of current literature

Temperature changes and thermo-light polymerization efficacy of two LED curing lights and 445-nm diode laser on glass carbomer material

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