Intrapulpal temperature changes during root surface irradiation with an 809-nm GaAlAs laser

Kreisler, Matthias; Al-Haj, Haitham; dʼHoedt, B

doi:10.1067/moe.2002.124766

Cited by 56 publications

(41 citation statements)

References 21 publications

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“…When the diode laser is used in the chopped mode, the amount of energy settled in dental tissue is the half of the energy of the continuous way (Anic et al, 1996;Kreisler et al, 2002;Wang et al, 2005). …”

Section: Discussionmentioning

confidence: 99%

Morphological alterations of radicular dentine pretreated with different irrigating solutions and irradiated with 980‐nm diode laser

Alfredo

Souza‐Gabriel

Silva

et al. 2008

Microscopy Res & Technique

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Section: Discussionmentioning

confidence: 99%

Morphological alterations of radicular dentine pretreated with different irrigating solutions and irradiated with 980‐nm diode laser

Alfredo

Souza‐Gabriel

Silva

et al. 2008

Microscopy Res & Technique

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“…The temperature rise of teeth placed in a 378C water bath after laser irradiation was reported to be 58C lower than the temperature rise of isolated teeth [34]. Nonetheless, the measurement of temperature rise is widely used as a convenient and fundamental method in evaluating the thermal effect of laser on pulp tissue [35][36][37], as the precisely controlled laboratory conditions can hardly be conducted in vivo.…”

Section: Discussionmentioning

confidence: 99%

Bactericidal effects of diode laser on Streptococcus mutans after irradiation through different thickness of dentin

et al. 2006

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Background and Objectives: A reliable method to eradicate the bacteria of residual carious dentin has not yet been developed. The aim of this study was to evaluate the antibacterial effect of a diode laser on Streptococcus mutans through different thickness (500, 1,000, and 2,000 mm) of human dentin. The thermal effect of laser irradiation was also investigated. Study Design/Materials and Methods: Dentin specimens were inoculated with 2 ml of S. mutans on one side and irradiated by a diode laser on the other side with a power output ranging from 0.5 to 7 W. The laser tip was swept with the whole irradiation area of 7 mmÂ3 mm at a speed of about 10 mm/second with a total irradiation time of 30 seconds. Cooling with distilled water (30 ml/minute) was applied simultaneously during laser irradiation. After laser irradiation, the bacteria was removed from the dentin surfaces and cultured for 48 hours at 378C anaerobically to assess the colony forming units (CFU) per ml. The morphology of the lased bacteria and the temperature rise during laser irradiation were observed by scanning electron microscope (SEM) and measured by thermocouple, respectively. Results: The results revealed that 7 W of laser power could kill 97.7% of CFU through 500 mm thickness of dentin. However, the bactericidal efficiency was significantly reduced as the dentin thickness was increased. The morphological changes of lased bacteria ranged from less affected such as loss of their wall bands and existence of minicells to more severely degenerated, such as disintegration and fusion of cells with pores on the cell wall. Only the dentin specimens with a thickness of 500 mm exhibited a temperature rise greater than 5.58C after receiving 5 or 7 W of laser irradiation. Conclusions: A diode laser can eliminate the Streptococcus mutans of the residual carious dentin without inducing high pulpal temperature rise when the remaining dentin thickness is greater than 1 mm.

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“…The possible consequences of thermal variations in abutment roots include damage to the cemental layer, resorption of roots and periodontal ligament fibres, alveolar bone necrosis and pain. [26][27][28] Eriksson et al 29 reported that temperatures above 56-60 u C can cause protein denaturation in hard tissues. The thermal variations in alveolar bone also result in implant loss, necrosis and pain.…”

Section: Discussionmentioning

confidence: 99%

Radiofrequency heating and magnetically induced displacement of dental magnetic attachments during 3.0 T MRI

Miyata¹,

Hasegawa²,

Abe³

et al. 2012

Dentomaxillofacial Radiology

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Intrapulpal temperature changes during root surface irradiation with an 809-nm GaAlAs laser

Cited by 56 publications

References 21 publications

Morphological alterations of radicular dentine pretreated with different irrigating solutions and irradiated with 980‐nm diode laser

Morphological alterations of radicular dentine pretreated with different irrigating solutions and irradiated with 980‐nm diode laser

Bactericidal effects of diode laser on Streptococcus mutans after irradiation through different thickness of dentin

Radiofrequency heating and magnetically induced displacement of dental magnetic attachments during 3.0 T MRI

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