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首页> 外文会议>Optical sensors and biophotonics II >The Effect of Different Chemical Agents on Human Enamel: An Atomic Force and Scanning Electron Microscopy Study
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The Effect of Different Chemical Agents on Human Enamel: An Atomic Force and Scanning Electron Microscopy Study

机译：不同化学试剂对人牙釉质的影响：原子力和扫描电子显微镜研究

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摘要

PURPOSE: The goal of our study was to investigate the changes in enamel surface roughess induced by the application of different chemical substances by atomic force microscopy and scanning electron microscopy.rnMETHOD: Five sound human first upper premolar teeth were chosen for the study. The buccal surface of each tooth was treated with a different chemical agent as follows: Sample 1 - 38% phosphoric acid etching (30s) , sample 2 - no surface treatment (control sample), 3 - bleaching with 37.5 % hydrogen peroxide (according to the manufacturer's instructions), 4 - conditioning with a self-etching primer (15 s), 5 - 9.6 % hydrofluoric acid etching (30s). All samples were investigated by atomic force microscopy in a non-contact mode and by scanning electron microscopy. Several images were obtained for each sample, showing evident differences regarding enamel surface morphology. The mean surface roughness and the mean square roughness were calculated and compared.rnRESULTS: All chemical substances led to an increased surface roughness. Phosphoric acid led to the highest roughness while the control sample showed the lowest. Hydrofluoric acid also led to an increase in surface roughness but its effects have yet to be investigated due to its potential toxicity.rnCONCLUSIONS: By treating the human enamel with the above mentioned chemical compounds a negative micro-retentive surface is obtained, with a morphology depending on the applied substance.
机译：目的：本研究的目的是通过原子力显微镜和扫描电子显微镜研究不同化学物质的应用所引起的牙釉质表面粗糙度的变化。方法：选择五只健全的人类第一颗上磨牙。用不同的化学试剂对每颗牙齿的颊面进行如下处理：样品1-38％的磷酸蚀刻（30秒），样品2-未进行表面处理（对照样品），3-用37.5％的过氧化氢漂白（根据（制造商的说明），4-使用自蚀刻底漆进行修整（15 s），5-9.6％氢氟酸蚀刻（30 s）。通过非接触模式的原子力显微镜和扫描电子显微镜研究所有样品。每个样品均获得了几张图像，显示出搪瓷表面形态的明显差异。计算并比较了平均表面粗糙度和均方根粗糙度。结果：所有化学物质均导致表面粗糙度增加。磷酸导致的粗糙度最高，而对照样品的粗糙度最低。氢氟酸还导致表面粗糙度增加，但由于其潜在的毒性，其效果尚待研究。结论：通过用上述化合物处理人牙釉质，可获得负微保持性表面，其形态取决于在应用的物质上。

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  • 来源
    《Optical sensors and biophotonics II》|2010年|p.79900Z.1-79900Z.6|共6页
  • 会议地点 Shanghai(CN)
  • 作者

    Roxana Otilia Rominu; Mihai Rominu; Meda Lavinia Negrutiu; Cosmin Sinescu; Daniela Pop; Emanuela Petrescu;

  • 作者单位

    "Victor Babes" University of Medicine and Pharmacy Timisoara, Romania, Department of Prostheses Technology and Dental Materials, Bd. Revolutiei 9, Timisoara, Romania;

    "Victor Babes" University of Medicine and Pharmacy Timisoara, Romania, Department of Prostheses Technology and Dental Materials, Bd. Revolutiei 9, Timisoara, Romania;

    "Victor Babes" University of Medicine and Pharmacy Timisoara, Romania, Department of Prostheses Technology and Dental Materials, Bd. Revolutiei 9, Timisoara, Romania;

    "Victor Babes" University of Medicine and Pharmacy Timisoara, Romania, Department of Prostheses Technology and Dental Materials, Bd. Revolutiei 9, Timisoara, Romania;

    "Victor Babes" University of Medicine and Pharmacy Timisoara, Romania, Department of Prostheses Technology and Dental Materials, Bd. Revolutiei 9, Timisoara, Romania;

    "Victor Babes" University of Medicine and Pharmacy Timisoara, Romania, Department of Prostheses Technology and Dental Materials, Bd. Revolutiei 9, Timisoara, Romania;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 光波通信、激光通信;
  • 关键词

    atomic force microscopy, scanning electron microscopy, enamel conditioning, surface roughness;

    机译：原子力显微镜，扫描电子显微镜，搪瓷处理，表面粗糙度;

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