Comparative Evaluation of the Etching Pattern of Er,Cr:YSGG & Acid Etching on Extracted Human Teeth-An ESEM Analysis
| Autor: | Shashi Ranjan, Deirimika Lakiang, Priyankar Singh, Naveen Kumar Krishna, Rashmi Issar, Ravindra Kole, Chiranjeevi Jayam, Dibyendu Mazumdar |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
030103 biophysics Clinical Biochemistry Smear layer Dentistry lcsh:Medicine smear layer 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine stomatognathic system wavelength Etching (microfabrication) Dentin medicine Composite material Environmental scanning electron microscope Phosphoric acid Enamel paint business.industry lcsh:R technology industry and agriculture power density 030206 dentistry General Medicine target tissues Dentistry Section stomatognathic diseases medicine.anatomical_structure Dentinal Tubule chemistry visual_art visual_art.visual_art_medium Posterior teeth business |
| Zdroj: | Journal of Clinical and Diagnostic Research, Vol 10, Iss 5, Pp ZC01-ZC05 (2016) |
| Popis: | Introduction: Etching of enamel and dentin surfaces increases the surface area of the substrate for better bonding of the tooth colored restorative materials. Acid etching is the most commonly used method. Recently, hard tissue lasers have been used for this purpose. Aim: The aim of the present study was to evaluate and compare the etching pattern of Er,Cr:YSGG and conventional etching on extracted human enamel and dentin specimens. Materials and Methods: Total 40 extracted non-diseased teeth were selected, 20 anterior and 20 posterior teeth each for enamel and dentin specimens respectively. The sectioned samples were polished by 400 grit Silicon Carbide (SiC) paper to a thickness of 1.0 ± 0.5 mm. The enamel and dentin specimens were grouped as: GrE1 & GrD1 as control specimens, GrE2 & GrD2 were acid etched and GrE3 & GrD3 were lased. Acid etching was done using Conditioner 36 (37 % phosphoric acid) according to manufacturer instructions. Laser etching was done using Er,Cr:YSGG (Erbium, Chromium : Ytrium Scandium Gallium Garnet) at power settings of 3W, air 70% and water 20%. After surface treatment with assigned agents the specimens were analyzed under ESEM (Environmental Scanning Electron Microscope) at X1000 and X5000 magnification. Results: Chi Square and Student “t” statistical analysis was used to compare smear layer removal and etching patterns between GrE2-GrE3. GrD2 and GrD3 were compared for smear layer removal and diameter of dentinal tubule opening using the same statistical analysis. Chi-square test for removal of smear layer in any of the treated surfaces i.e., GrE2-E3 and GrD2-D3 did not differ significantly (p>0.05). While GrE2 showed predominantly type I etching pattern (Chi-square=2.78, 0.050.10) and GrE3 showed type III etching (Chi-square=4.50, p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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