UNIVERSITAS AIRLANGGA



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BIOSAINS

ISSN 1412-1433

Vol. 13 / No. 2 / Published : 2011-05

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Original Article :

Characterization of physical properties from human enamel induced by nd:yag pulsed laser based on laser speckle imaging system

Author :

  1. Retna Apsari*1
  2. Noriah Bidin*2
  3. Suhariningsih*3
  4. Sri Hartati*4
  5. Anita Yuliati*5
  1. Physics Department, Faculty of Science and Technology, Airlangga University, Surabaya - Indonesia
  2. Physics Department, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru - Malaysia
  3. Physics Department, Faculty of Science and Technology, Airlangga University, Surabaya - Indonesia
  4. Physics Department, Faculty of Mathematics and Natural Siences, Gadjah Mada University, Yogyakarta - Indonesia
  5. Material Department, Faculty of Dentistry, Airlangga University, Surabaya - Indonesia

Abstract :

This research was aimed to examine the physical characteristics of human enamel induced by Nd:YAG laser interaction using the analysis of imaging and FESEM. FESEM machine was used to analyze the metallurgical effect on the damaged and effected surface of the sample. Focusing on the Q-switched and without Nd:YAG pulsed laser, an elliptical lens of 28 mm focal length is used. A Pulnix CCD video camera was connected to Matrox Meteor II standard board. Human enamel and plasma image were recorded by CCD video camera, and the data obtained was analyzed by Matrox Inspector software. The distance between laser and human enamel is 50 cm. Human enamel was formed flat with a diameter around 6 mm. The variation of internal pumping are 540, 560, 580, 600, 620, 640, 660, 680, 700, 720, 740, 760 Volt, and the frequency variation are 1, 5, 10 and 25 Hz. The imaging analysis based on the laser speckle imaging revealed that with energy pumping of 540 V, no laser output produced indicated that there was no laser interaction Nd: YAG in human enamel. Internal energy pumping without Q-switch (with and non focusing) and non focusing Q-Switch resulted in no plasma production in various frequency and energy since these pumping only produced multiple reflection and sample vibration. Meanwhile, the internal pumping with Q-switch and focusing has disclosed the following physical characteristics: multiple reflection, sample vibration, shock wave, phototermal, and plasma production. At the frequency of 1 Hz plasma production appeared in 620 V(48.3 mJ) of pumping energy; at 5 Hz it appeared in 600 V (34.8 mJ), at 10 Hz it appeared in 580 V (21.6 mJ); and at 25 Hz it appeared in 640 V (62.5 mJ). From the analysis of the imaging and FESEM, it can be concluded that the technique of internal pumping without Q-Switch (with and non focusing) is not damaging for human enamel, and so is non focusing Q-Switch. Focusing phenomenon before the exposure of Nd:YAG pulsed laser on human enamel may cause damage to human enamel. It has proven that the technique of internal pumping without Q-Switch and Q-Switch Nd:YAG pulsed laser non focusing can be used for diagnosis in dentistry area, but not for therapy. Nd:YAG pulsed laser focusing that can produce optical breakdown phenomenon is more appropriate for use in therapy.

Keyword :

human enamel, , physical properties, , plasma production, , phototermal, , shock wave, Nd:YAG pulsed laser, Q-Switch, withouth Q-Switch, focussing,


References :

Apsari R,(1998) Penentuan Koefisien Difusi Larutan dengan Teknik Interferometri Holografi. Yogyakarta. : Program Pascasarjana Universitas Gadjah Mada

A rdiansyah D, Sekartedjo,,(2005) Numerical Reconstruction of Digital Holographic Recording. Photonics Laboratory Surabaya : Engineering Physics Department, ITS

Arianto,,(2003) Studi Karakteristik Mikrostruktur dan Sifat Dentin Manusia terhadap Panas Sebagai Modifikasi Permukaan Dentin. Jakarta. : Program Studi Ilmu Material, Program Pascasarjana, FMIPA Universitas Indonesia,

Asundi, ,(2003) Novel Optical Sensors For Testing and Measurement. Singapura : School of Mechanical and Production Engineering, Nanyang Technology University

Brodie,(2003) Welding of Skin using Nd:YAG Laser with Bipolar Contact Applicators. Quensland : University of Southern Quensland





Archive Article

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Volume : 13 / No. : 2 / Pub. : 2011-05
  1. Antimalarial Activity And Mechanism Of Action Of Flavonoid Compounds Isolated From Artocarpus Champeden Spreng Stembark
  2. Studi On The Espression Of Tgf-b1 Mmp-9, Collagen Type-i, Collagen Tipe-iv, Glomerulosclerosis, Interstisial Fibrosis, And Albuminuria In Hephrotoxic Docorubin And Nephroprotective Pentoxifyllin Events On Male Swiss-strain Mice
  3. Characterization Of Physical Properties From Human Enamel Induced By Nd:yag Pulsed Laser Based On Laser Speckle Imaging System
  4. Protein Expression Of Cox-2 In High And Low Response In Nasopharynx Carcinoma After Radiotherapy
  5. Gene Polymorphism Of Mthfr C677t And Ts 5’-utr 3r/3r, On Childhood Acute Lymphoblastic Leukemia Resistance To Methotrexate
  6. Effective Growth Medium, Light Intensity And Length Of Radiation For Culturing Isolated Microcystis From Sutami Reservoir In Laboratory
  7. Nutrition And Iron Status In Children With Tb Parents, Their Role On Infection And Disease

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