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  • 标题:مواجهه با متيل متا کريلات و علائم آن در تکنسين های پروتز دندان، تهران-ايران
  • 其他标题:Exposure to Methyl Methacrylate and its Subjective SymptomsAmong Dental Technicians,Tehran-Iran
  • 本地全文:下载
  • 作者:F. Golbabaei ; M. Mamdouh ; K. Nouri Jelyani
  • 期刊名称:Iran Occupational Health
  • 印刷版ISSN:1735-5133
  • 电子版ISSN:2228-7493
  • 出版年度:2006
  • 卷号:3
  • 期号:2
  • 页码:6-0
  • 语种:Persian
  • 出版社:Tehran University of Medical Sciences
  • 摘要:

    چکيده

  • 其他摘要:

      Background and aims

    Methyl Methacrylate (MMA) which is known as a long, skin and eye irritant is the most common form of acrylic plastic used in dental laboratories. The aims of this study were to evaluate dental technicians, exposure to MMAand to assess their health with a focus on respiratory and dermal symptoms.

      Methods

    Exposure to MMA, total dust and health symptoms were investigated in 20 dental laboratories located in Tehran, Iran. Time weighted average (TWA) of MMA and peak concentrations were determined , using XAD-2 tubes followed by GC-ID analysis. Total dust were evaluated gravimetrically. Health symptoms were asked using a questionnaire.

      Results

    The TWAfor technicians with direct and indirect exposure to MMAwere 327.28 + 79.42 and 282.9 + 41.84 mg/m3, respectively. Peak concentration of MMA for those technicians were 337.0 + 36.81 and 328.88 + 45.40 mg/m3, respectively. There were no significant differences between TWAof MMAand peak concentration in different weakly workdays; low ever, within - day variations were observed (P<0.05). TWAof MMA and peak concentration correlation with the laboratory volume were 0.61- 0.65, Dust exposure of technicians was 2.35 + 2.70 mg/m3. Cough and Skin dryness were the common health symptoms. Smoking and asbestos exposure history were factors influencing cough prevalence (P<0.005).

      Conclusion

    It is concluded that the current short - Term Exposure Limit (STEL) is not low enough to protect technicians against the adverse effects caused by MMA.

  • 关键词:متیل متا کریلات( MMA ); تکنسین های پروتز دندان; لابراتورهای پروتز دندان; نشان های بهداشتی; میانگین زمانی تراکم (TWA); تراکم پیک
  • 其他关键词:Methyl Methacrylate (MMA); dental technicians; dental laboratories ; health symptoms; Time- weighted Average (TWA) Concentration; Peak Concentration
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