TEMPERATURE AND SURFACE CHANGES OF DENTIN AND CEMENTUM INDUCED BY CO2-LASER EXPOSURE

被引：21

作者：

ANIC, I

DZUBUR, A

VIDOVIC, D

TUDJA, M

机构：

[1] Department of Dental Pathology, Dental School University of Zagreb

[2] Expert Measurement and Analysis Systems (EMAS), Zagreb

[3] Department of Neurosurgery, University of Zagreb

[4] CHROMOS Chemical Research Centre, Zagreb

来源：

INTERNATIONAL ENDODONTIC JOURNAL | 1993年 / 26卷 / 05期

关键词：

CO2; LASER; DENTIN; DENTAL CEMENTUM; ROOT CANAL; TEMPERATURE CHANGES;

D O I：

10.1111/j.1365-2591.1993.tb00573.x

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

The thermal effects of a CO2 laser on the external root surface and inside the root canal were studied in vitro by means of computerized infrared (IR) thermography and a digital thermometer. One-hundred-and-eighty tooth roots with single root canals were irradiated internally and externally with laser power set at 0.5, 1, 1.5, 2, 3 and 4 W. The laser was used in two operating modes: pulsed (pulse 0.5 s) and continuous mode with exposure time of 10 s. Under the conditions of this experiment, temperature rises of between 1.5 and 19.1-degrees-C at the external root surface and 1.5 and 12-degrees-C inside the root canal and horizontally across the sectioned root surface were recorded. The results obtained with IR camera showed a higher temperature on the external root surface than the digital thermometer during and after lasing the root canal. Scanning electron microscope (SEM) analysis revealed that even low laser energy significantly damaged the external root cementum surfaces.

引用

页码：284 / 293

页数：10

共 24 条

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