Presence of arsenic in different types of MTA and white and gray Portland cement
Presence of arsenic in different types of MTA and white and gray Portland cement
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DOI：
10.1016/j.tripleo.2008.07.018
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发表时间：
2008-12-01
期刊：
影响因子：
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通讯作者：
Hungaro Duarte, Marco Antonio
中科院分区：
文献类型：
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作者：
Bramante, Clovis Monteiro;Cardoso Oliveira Demarchi, Ana Claudia;Hungaro Duarte, Marco Antonio
Objective.评估了各种类型的矿物三氧化物骨料（MTA）和波特兰水泥中砷的存在，以验证它们是否符合ISO推荐的水基水泥2 mg砷/kg材料的限值。将5 mL盐酸加入到各2 g MTA和波特兰水泥中进行分析。15分钟后，过滤材料，用试剂级水将上清液体积稀释至40 mL。原子吸收分光光度法读数一式三份。获得以下平均值：CPM（Egeo，Buenos Aires，Argentina）11.06 mg/kg; CPM 10.30 mg/kg（Egeo）; MTA- Obtura（Angelus，Londrina，PR，Brazil）0.39 mg/kg;实验MTA：10.30 mg/kg;白色MTA- Angelus（Angelus）1.03 mg/kg;灰色MTA- Angelus（Angelus）5.91 mg/kg; ProRoot-MTA（Dentsply/塔尔萨牙科专业公司，塔尔萨，俄克拉荷马州）5.25 mg/kg;灰色波特兰水泥（沃托兰廷Cimentos，Cubatao，SP，巴西）：34.27 mg/kg;和白色波特兰水泥（Cimento Rio Branco，里约热内卢，RJ，巴西）0.52 mg/kg。所有受试材料的成分中都含有砷。没有分析砷的形式，也没有发现砷的毒性。只有MTA- Obtura、白色MTA- Angelus和白色波特兰水泥的砷含量低于ISO 9917-1标准中设定的限值。(Oral《口腔外科医学》、《口腔病理学》、《口腔放射学》、《口腔内分泌学》2008年; 106：909-913）
Objective. The presence of arsenic in various types of mineral trioxide aggregate (MTA) and Portland cements were evaluated to verify if they comply with the ISO-recommended limit for water-based cements of 2 mg arsenic/kg material.Study design. An amount of 5 mL of hydrochloric acid was added to 2 g each of MTA and Portland cement to be analyzed. After 15 minutes, the material was filtered and the volume of supernatant was diluted with reagent-grade water up to 40 mL. Atomic absorption spectrophotometry readings were performed in triplicate.Results. The following mean values were obtained: CPM (Egeo, Buenos Aires, Argentina) 11.06 mg/kg; CPM sealer (Egeo) 10.30 mg/kg; MTA- Obtura (Angelus, Londrina, PR, Brazil) 0.39 mg/kg; Experimental MTA: 10.30 mg/kg; White MTA- Angelus (Angelus) 1.03 mg/kg; Gray MTA- Angelus (Angelus) 5.91 mg/kg; ProRoot-MTA (Dentsply/Tulsa Dental Specialties, Tulsa, OK) 5.25 mg/kg; Gray Portland cement (Votorantim Cimentos, Cubatao, SP, Brazil): 34.27 mg/kg; and White Portland cement (Cimento Rio Branco, Rio de Janeiro, RJ, Brazil) 0.52 mg/kg.Conclusion. All tested materials presented arsenic in their composition. The form of arsenic was not analyzed nor the toxicity of the arsenic found. Only MTA- Obtura, White MTA- Angelus, and White Portland cement presented arsenic levels below the limit set in the ISO 9917-1 standard. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2008; 106: 909-913)