THE EFFECT OF ARGON LASER WAVELENGTH AND RADIANT INTENSITY ON THE PHYSICAL AND MECHANICAL PROPERTIES OF DENTAL RESIN

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ETRATI KHOSROU SHAHI S.M.; ATAEI MOHAMMAD; NOUR BAKHSH S.M.S.

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Journal: Iranian Journal of Polymer Science and Technology Year:2007 | Volume:19 | Issue:5 (ISSUE NO. 85) Page(s): 387-394

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Information Journal Paper

Title

THE EFFECT OF ARGON LASER WAVELENGTH AND RADIANT INTENSITY ON THE PHYSICAL AND MECHANICAL PROPERTIES OF DENTAL RESIN

Author(s)

ETRATI KHOSROU SHAHI S.M. | ATAEI MOHAMMAD | NOUR BAKHSH S.M.S. | Issue Writer Certificate

Keywords

ARGON LASERQ3

DENTAL RESINQ3

CONVERSION DEGREEQ3

SOLUBILITYQ3

FLEXURAL STRENGTHQ3

Abstract

Light cured dental composite resins are extensively used in dentistry. The purpose of this study was to investigate the effect of different wavelengths, power densities and irradiation time of an ARGON LASER on the physical and mechanical properties of a Bis-GMA DENTAL RESIN based monomer. The resin was prepared by mixing Bis-GMA and TEGDMA with a mass ratio of 75/25. A tuneable ARGON LASER was used to cure the samples at 488 nm and 514 nm wavelengths separately. Degree of conversion (DC%) of samples was measured using FTIR spectroscopy. The water sorption and SOLUBILITY were also measured. The temperature rise during polymerization reaction was measured using a K-type thermocouple. The FLEXURAL STRENGTH, flexural modulus and microhardness of samples were also measured and compared. The results revealed that the resin cured at 488 nm with 1075 mW/cm2 showed higher degree of conversion (52.2±4.8), FLEXURAL STRENGTH (51.19±2.10 MPa), flexural modules (1112.75±48.28 MPa), microhardness (l9.59±1.61 kg/mm2), and lower water sorption (23.7 mg/mm3) and SOLUBILITY (2.20 mg/mm3) in comparison the resin cured at 514 nm with 700 mW/cm2 exhibited lower degree of conversion (26.6±2.3), FLEXURAL STRENGTH (8.42±0.97 MPa), flexural modulus (107.76±10.63 MPa), microhardness (1.20±0.15 kglmm2), and higher water sorption (56.3 mg/mm3) and SOLUBILITY (16.4 mg/mm3).The specimens cured at 488 nm and 1075 mW/cm2 showed the highest temperature rise due to reaction(13.5oC), which was in agreement with the results of DC%. On the other hand curing the resin at 514 nm and 700 mW/cm2 resulted in lowest temperature rise due to reaction (3.5oC).No significant difference between water sorption, SOLUBILITY and FLEXURAL STRENGTH of specimens was observed when cured with 488 nm at different power densities. The results showed that using 488 nm wavelength at relatively high power densities of an ARGON LASER can be useful in clinical applications with regard to achieving acceptable chemical and physical improvement.

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APA: Copy

ETRATI KHOSROU SHAHI, S.M., ATAEI, MOHAMMAD, & NOUR BAKHSH, S.M.S.. (2007). THE EFFECT OF ARGON LASER WAVELENGTH AND RADIANT INTENSITY ON THE PHYSICAL AND MECHANICAL PROPERTIES OF DENTAL RESIN. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), 19(5 (ISSUE NO. 85)), 387-394. SID. https://sid.ir/paper/6672/en

Vancouver: Copy

ETRATI KHOSROU SHAHI S.M., ATAEI MOHAMMAD, NOUR BAKHSH S.M.S.. THE EFFECT OF ARGON LASER WAVELENGTH AND RADIANT INTENSITY ON THE PHYSICAL AND MECHANICAL PROPERTIES OF DENTAL RESIN. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN)[Internet]. 2007;19(5 (ISSUE NO. 85)):387-394. Available from: https://sid.ir/paper/6672/en

IEEE: Copy

S.M. ETRATI KHOSROU SHAHI, MOHAMMAD ATAEI, and S.M.S. NOUR BAKHSH, “THE EFFECT OF ARGON LASER WAVELENGTH AND RADIANT INTENSITY ON THE PHYSICAL AND MECHANICAL PROPERTIES OF DENTAL RESIN,” IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), vol. 19, no. 5 (ISSUE NO. 85), pp. 387–394, 2007, [Online]. Available: https://sid.ir/paper/6672/en

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