Study of electromotive forces on metallic restorations and allergic symptoms in the patients of dental-metal-allergy

本研究的目的是研究金属牙本质过敏症患者和正常对照者的金属牙本质净化液的电解稳定性。在这两组中观察到金属化合物的电动势。过敏性金属和金属电解稳定性的关系也进行了调查。二、材料和方法23名牙科金属过敏的可疑患者谁访问固定修复科，德岛大学医院从2003年12月至2004年6月参加了这项研究项目。选择23名无体征和牙金属过敏症状的成年志愿者作为对照组。所有受试者在进行临床研究前均获得知情同意书，对所有受试者进行口腔内检查，并使用DMA仪（Morita Co.，Dental Metal Activity Meter JS 2002）用于评估这些金属化合物的电动势。 ...更多信息 科目斑贴试验，确定过敏金属进行了可疑的病人group.III。结果和DiscussionFor的大部分preparations，DMA计记录的“亚稳态”电解稳定性。然后发现“活跃”的结晶，少数结晶显示出“稳定”的条件。银汞合金和镍铬合金中多为活性金属，而铂合金和键合-HI-贵金属合金中多为稳定金属。金-银-钯合金、金合金、银合金、钴铬合金等多种材料的牙本质均表现为“亚稳态”。比较牙齿金属过敏组与正常对照组（包括志愿者和斑贴试验阴性患者）的电解稳定性。在牙科金属过敏患者组中发现了“活性”键合-HI-贵金属涂层，由于患者人数有限，我们无法评估金属涂层的稳定性对其过敏症状的影响。将需要进一步的调查，以澄清牙科材料和过敏症状的关系。少

I.PurposePurpose of this research is to study the electrolysis stability of metallic restorations in the patients of dental-metal-allergy and control subjects. Electromotive forces of metallic restorations were observed in these two groups. Relationship between allergic metals and the electrolysis stability of metallic restorations was also investigated.II.Materials and MethodsTwenty-three dental-metal-allergy suspected patients who visited Department of Fixed Prosthodontics, Tokushima University Hospital from December 2003 to June 2004 were participated in this research project. Twenty-three adult volunteers without sighs and symptoms of dental-metal-allergy were selected for the control group. Informed consents were taken from all subjects before go through the clinical investigations.Intra-oral examinations were done for all subjects and DMA meter (Morita Co., Dental Metal Activity Meter JS2002) was utilized to evaluate the electromotive forces of the metallic restorations of these … More subjects. Patch test that identifies allergic metals was performed for the suspected patient group.III.Results and DiscussionFor the most part of the restorations, DMA meter recorded ‘metastable' electrolysis stability. Then ‘active' restorations are found and a few restorations showed ‘stable' conditions.‘Active' metals were frequently found in amalgam and Ni-Cr alloy restorations, while the most of the platinum alloy and bond-HI-precious alloy restorations showed ‘stable'. Many of other restorations made with gold-silver-palladium alloy, gold alloy, silver alloy and Co-Cr alloy exhibited ‘metastable'.According to patch test investigation, the suspected patients group was divided into dental-metal-allergy group and patch test negative group. Comparison of the electrolysis stability of metallic restorations was done between the dental-metal-allergy group and the control group that consisted of volunteers and patch test negative patients. The ‘active' bond-HI-precious alloy restorations were found in the dental-metal-allergy patients group.Because of the limited number of the patients, we could not evaluate the affect of the metallic restorations stability on their allergic symptoms. Further investigations will be required to clarify the relationship of dental materials and allergy symptoms. Less