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 OPJ  Vol.4 No.5 , May 2014
Effect of Diode Laser 810nm in Hardness of Dental Ceramic
Abstract: This research study the effect of diode laser (810 nm), with various power (30, 200, 500) mW in hardness of the material used in the combinations of teeth (ceramics). Hardness was measured for dental ceramic samples divided into four groups, each group containing ten test sample, before and after it irradiated with the diode laser with wavelength 810 nm and different power (30, 200, 500) mW, with irradiation power of 200 mW for duration two minutes and ten minutes to the third and fourth groups, and irradiation power of 30 and 500 mW for duration one minute for the last two groups. The results showed that the increase in the irradiated time of the samples from two minutes to ten minutes, as well as increased power from 30 to 500 mW does not have a significant effect in increasing the hardness of the ceramic material. This study found that the hardness ratio of the samples was increased up to (18.28%), by irradiation of invisible diode laser 810 nm, 30 mW.
Cite this paper: Ahmed, M. , Abdelrahman, A. , Mohieldin, E. and Yagoub, S. (2014) Effect of Diode Laser 810nm in Hardness of Dental Ceramic. Optics and Photonics Journal, 4, 104-112. doi: 10.4236/opj.2014.45011.
References

[1]   Ahluwalia, G.S. (2009) Cosmetic Application of Laser and Light-Based System, William Andrew, 101 (Inc USA).

[2]   Gary, N. and Gary, A. (1983) Dye Stability under Excaimer Laser Pumping. Applied Physics B, 30, 109-166.

[3]   Brackmann, U. (1986) Lambdachrome Laser Dyes. First Edition.

[4]   Gary, N. and Gary, A. (2010) Text Book of Operative Dentistry. Jaypee Brothers, Medical Publishers.

[5]   Lakshmanan, A. (2012) Sintering of Ceramics_ New Emerging Techniques. InTech, JanezaTrdine 9, 51000 Rijeka, Croatia.

[6]   Touati, P. and Nathanson, D. (1999) Esthetic Dentistry and Ceramic Resoration. New York, NY, USA.

[7]   Ora-laser jet, Oralia Medical Gmbh, Instruction Manual Oralia Company—Germany.

[8]   Czichos, H., Saiato, T., Leslie, L. and Smith, R. (2006) Hand Book of Material Measurement Method. Springer Science+Business Media, Inc.

[9]   Information Provided by Shimadzu, Scientific Instrument.htm.

 
 
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