Iran Occupational Health Journal
سلامت كار ايران
ioh
Medical Sciences
http://ioh.iums.ac.ir
136
journal136
1735-5133
2228-7493
10.61186/ioh
fa
jalali
1385
7
1
gregorian
2006
10
1
3
2
online
1
fulltext
fa
مواجهه با متیل متا کریلات و علائم آن در تکنسین های پروتز دندان، تهران-ایران
Exposure to Methyl Methacrylate and its Subjective SymptomsAmong Dental Technicians,Tehran-Iran
ایمنی
Safety
پژوهشي
Research
<p align="right">چکیده</p>
<p> <strong> Background and aims </strong></p><p> 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. </p><p> <strong> Methods </strong></p><p> 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. </p><p> <strong> Results </strong></p><p> 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). </p><p> <strong> Conclusion </strong></p><p> 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. </p><p> </p>
متیل متا کریلات( MMA ), تکنسین های پروتز دندان، لابراتورهای پروتز دندان، نشان های بهداشتی، میانگین زمانی تراکم (TWA)، تراکم پیک
Methyl Methacrylate (MMA), dental technicians, dental laboratories , health symptoms, Time- weighted Average (TWA) Concentration, Peak Concentration
6
0
http://ioh.iums.ac.ir/browse.php?a_code=A-10-1-48&slc_lang=fa&sid=1
F.
Golbabaei
فریده
گلبابایی
1360031947532846003112
1360031947532846003112
Yes
دانشکده بهداشت دانشگاه علوم پزشکی تهران
M.
Mamdouh
مریم
ممدوح
1360031947532846003113
1360031947532846003113
No
K.
Nouri Jelyani
کرامت
نوری جلیانی
1360031947532846003114
1360031947532846003114
No
دانشکده بهداشت دانشگاه علوم پزشکی تهران
SJ.
Shahtaheri
سید جمال الدین
شاه طاهری
1360031947532846003115
1360031947532846003115
No
دانشکده بهداشت دانشگاه علوم پزشکی تهران