Microbiologically influenced corrosion of orthodontic metallic appliances

被引:26
|
作者
Kameda, Takashi [1 ]
Oda, Hirotake [2 ]
Ohkuma, Kazuo [3 ]
San, Natsuki [1 ]
Batbayar, Nomintsetseg [1 ]
Terashima, Yukari [1 ]
Sato, Soh [2 ]
Terada, Kazuto [1 ]
机构
[1] Nippon Dent Univ, Sch Life Dent Niigata, Dept Orthodont, Chuo Ku, Niigata 9518580, Japan
[2] Nippon Dent Univ, Sch Life Dent Niigata, Dept Periodontol, Chuo Ku, Niigata 9518580, Japan
[3] Nippon Dent Univ, Sch Life Dent Niigata, Dept Dent Mat Sci, Chuo Ku, Niigata 9518580, Japan
关键词
Oral bacteria; Metallic elution; Surface roughness; Stainless steel; Nickel titanium; TITANIUM; ALLOYS; BEHAVIOR; BIOFILMS; RELEASE; PH;
D O I
10.4012/dmj.2013-297
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Biocorrosion (microbiologically influenced corrosion; MIC) occur in aquatic habitats varying in nutrient content, temperature, stress and pH. The oral environment of organisms, including humans, should be one of the most hospitable for MIC. Corrosion of metallic appliances in the oral region is one cause of metal allergy in patients. In this study, an inductively coupled plasma-optical emission spectrometer revealed elution of Fe, Cr and Ni from stainless steel (SUS) appliances incubated with oral bacteria. Three-dimensional laser confocal microscopy also revealed that oral bacterial culture promoted increased surface roughness and corrosion pits in SUS appliances. The pH of the supernatant was lowered after co-culture of appliances and oral bacteria in any combinations, but not reached at the level of depassivation pH of their metallic materials. This study showed that Streptococcus mutans and Streptococcus sanguinis which easily created biofilm on the surfaces of teeth and appliances, did corrode orthodontic SUS appliances.
引用
收藏
页码:187 / 195
页数:9
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