Screening of CO2 Laser (10.6 μm) Parameters for Prevention of Enamel Erosion
| Autor: | Thomas Attin, Annette Wiegand, Marcella Esteves-Oliveira, Joerg Meister, Carlos de Paula Eduardo, Hao Yu, Friedrich Lampert |
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| Rok vydání: | 2012 |
| Předmět: |
Calcium Phosphates
Time Factors Materials science Scanning electron microscope Biomedical Engineering Analytical chemistry Dentistry chemistry.chemical_element Hydrochloric acid Calcium Sampling Studies law.invention chemistry.chemical_compound Dental Enamel Solubility Reference Values Risk Factors law Animals Tooth Erosion Radiology Nuclear Medicine and imaging Low-Level Light Therapy Dental Enamel Original Research Analysis of Variance Equipment Safety Enamel paint business.industry Pulse (signal processing) Dose-Response Relationship Radiation Phosphate Laser Incisor Tooth Abrasion chemistry visual_art Models Animal Lasers Gas Microscopy Electron Scanning visual_art.visual_art_medium Cattle business |
| Zdroj: | Photomedicine and Laser Surgery. 30:331-338 |
| ISSN: | 1557-8550 1549-5418 |
| DOI: | 10.1089/pho.2011.3175 |
| Popis: | Objective: The aim of this study was to screen CO2 laser (10.6 μm) parameters to increase enamel resistance to a continuous-flow erosive challenge. Background data: A new clinical CO2 laser providing pulses of hundreds of microseconds, a range known to increase tooth acid-resistance, has been introduced in the market. Methods: Different laser parameters were tested in 12 groups (n=20) with varying fluences from 0.1 to 0.9 J/cm2, pulse durations from 80 to 400 μs and repetition rates from 180 to 700 Hz. Non-lased samples (n=30) served as controls. All samples were eroded by exposure to hydrochloric acid (pH 2.6) under continuous acid flow (60 μL/min). Calcium and phosphate release into acid was monitored colorimetrically at 30 sec intervals up to 5 min and at 1 min intervals up to a total erosion time of 15 min. Scanning electron microscopic (SEM) analysis was performed in lased samples (n=3). Data were statistically analysed by one-way ANOVA (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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