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Journal of Dentomaxillofacil Radiology, Pathology and Surgery، جلد ۳، شماره ۳، صفحات ۳۵-۳۹
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
In vitro Evaluation of Dentin Surface Irradiated by Neodymium-doped: Yttrium Aluminum Garnet Laser (Nd: YAG) Using Scanning Electron Microscopy |
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| چکیده انگلیسی مقاله |
Introdouction: Dentinal hypersensitivity (DH) is one of the most painful chronic problems reported in dental offices. Various methods have been applied for the treatment of DH. However, majority of them are either ineffective or last for a short period of time. It has been reported that lasers, particularly Neodymium- doped: Yttrium Aluminum Garnet laser (Nd: YAG), can be helpful in the treatment of this disease. However, systematic reviews have shown that the available evidence for its effectiveness is weak. The aim of this study was to evaluate the Nd: YAG laser-prepared dentine surface with different powers and energies. Materials and methods: Fifteen extracted human molars were randomly divided into five groups receiving different powers and energies of Nd:YAG laser (Group A: power: 0.7 W, energy: 70 mJ Group B: power: 0.9 W, energy: 90 mJ Group C: power: 1.1 W, energy: 110 mJ Group D: power: 1.3 W, energy: 130 mJ and Group E: power: 1.5 W, energy: 150 mJ) in three pulse modes. The surfaces of the specimens were then studied using scanning electron microscopy (SEM). Results: With output power of 0.7 W in single, double and triple radiation modes, sealed dentinal tubules and absence of smear layer were observed. The surfaces prepared by using higher powers of 0.9, 1.1, 1.3, and 1.5 W showed the same features as those prepared with 0.7 W power in single and double pulse modes. In addition, carbonization centers were observed when single pulse mode with power of 1.5 W was employed. Conclusion:All combinations of power and energy tested in this study were found to have produced sealing of the dentinal tubules. However, 0.7 W power in double and triple radiation modes is suggested to be the best option for the clinician, due to having the lowest energy, fewer side effects and lower risk of physical dangers, as well as decreasing the occurrence of unwanted carbonizations. Experimental and clinical studies, especially randomized clinical trials, comparing the effects of Nd: YAG lasers with conventional methods are recommended. |
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| نویسندگان مقاله |
علی دهقانی ناژوانی | ali dehghani nazhvani
department of oral and maxillofacial pathology, biomaterial research center, school of dentistry, shiraz university of medical sciences, shiraz, iran.
سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)
هنگامه خسروپناه | hengameh khosropanah
department of periodontics, school of dentistry, shiraz university of medical sciences, shiraz, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)
مصطفی رضایی | mostafa rezai
department of oral medicine, school of dentistry, shiraz university of medical sciences, shiraz, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)
مهسا مرادی | mahsa moradi
faculty of dentistry, international branch of shiraz university of medical sciences, shiraz, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)
احمد مرادی | ahmad moradi
private practice, shiraz, iran
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| نشانی اینترنتی |
http://3dj.gums.ac.ir/browse.php?a_code=A-10-1-60&slc_lang=en&sid=en |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
So on |
| نوع مقاله منتشر شده |
پژوهشی |
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