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:: Volume 21, Issue 5 (Bimonthly 2017) ::
Feyz Med Sci J 2017, 21(5): 460-469 Back to browse issues page
Evaluating the interaction of 308-nm xenon chloride excimer laser with human dentin and enamel hard tissues
Mahshid Yaghmaeian-Mahabadi , Abbas Majdabadi * , Reza Fekrazad , Javad Amini Mahabadi , Hossein Nikzad
Laser and Optics Research School, Nuclear Science and Technology Research Institute, Tehran, I. R. Iran. , amajdabadi@aeoi.org.ir
Abstract:   (3259 Views)
Background: The pulsed output of the 308 nm XeCl laser and its photoablation action rather than photothermal action offers the ability to remove dental hard tissues with minimal generation of heat in the tissue.
Materials and Methods: A total of 20 human molar teeth (ten teeth used as enamel samples and ten teeth used as dentin samples after removing the enamel tissue from their crowns) were irradiated by the laser. The crown of each sample was regarded as a cube which its lateral sides were exposed in 2Hz frequency without water cooling. Also, 18 holes for all enamel samples and 18 holes for all dentin samples were obtained. Three different amounts of energy were selected as a variable factor with 6 different numbers of pulses in each energy. The images of these holes were prepared by optic and computer combining, and the amounts of the ablation depth and effective ablation area were calculated using the MATLAB software.
Results: The amounts of ablation depth were increased with increasing the number of pulses for both enamel and dentin tissues. The amounts of ablation depth were also increased with increasing the amounts of energy for both enamel and dentin tissues. The greater amounts of ablation depth and effective ablation area were observed in the dentin tissue rather than the enamel tissue. The borders of created holes were reported sharp and clear.
Conclusion: The application of the XeCl laser for hard tissue removal and cavity preparation can be possible after some certain modifications.
Keywords: XeCl laser, Ablation depth, Dentin, Enamel, Cavity preparation
Full-Text [PDF 515 kb]   (1245 Downloads)    
Type of Study: Research | Subject: medicine, paraclinic
Received: 2017/03/7 | Revised: 2017/11/21 | Accepted: 2017/10/10 | Published: 2017/11/15
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Yaghmaeian-Mahabadi M, Majdabadi A, Fekrazad R, Amini Mahabadi J, Nikzad H. Evaluating the interaction of 308-nm xenon chloride excimer laser with human dentin and enamel hard tissues. Feyz Med Sci J 2017; 21 (5) :460-469
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Volume 21, Issue 5 (Bimonthly 2017) Back to browse issues page
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