Allen Kenneth, Agosta Claudine, Estafan Denise
New York University College of Dentistry, New York, NY 10010, USA.
J Am Dent Assoc. 2004 Mar;135(3):319-23. doi: 10.14219/jada.archive.2004.0180.
Increased public access to fluoride has decreased the prevalence of caries and increased the prevalence of fluorosis staining. This article provides a case report involving a conservative method of removing fluorosis stain, as well as describes an in vitro test of the method.
A healthy man sought treatment at New York University College of Dentistry for removal of severe, dark brown fluorosis staining on his anterior teeth. To remove the stain, the treating clinician used a microabrasive material, which leaves enamel intact, instead of a tooth-whitening agent, which requires removal of all affected enamel.
To demonstrate that enamel structure is not disturbed by the microabrasive material, the authors performed a study using scanning electron microscopy, or SEM. They viewed enamel structure under SEM at x1,000 magnification. They viewed untreated microabraded enamel and compared it with enamel that had been treated for 20 seconds with 37 percent phosphoric acid.
An etch pattern was not discernible on the tooth treated with the microabrasive material. The enamel prisms remained intact and the cores were not exposed.
Microabrasion removes intrinsic fluorosis stain effectively while protecting enamel. In this case, an enamel shade of brown not in the range of any tooth color shade guide was reduced.
公众接触氟化物的机会增加，降低了龋齿的患病率，但氟斑牙染色的患病率却有所上升。本文提供了一个涉及去除氟斑牙染色保守方法的病例报告，并描述了该方法的体外测试。
一名健康男性前往纽约大学牙科学院寻求治疗，以去除其前牙严重的深褐色氟斑牙染色。为了去除污渍，治疗医生使用了一种微磨料材料，这种材料能使牙釉质保持完整，而不是使用需要去除所有受影响牙釉质的牙齿美白剂。
为了证明微磨料材料不会干扰牙釉质结构，作者进行了一项使用扫描电子显微镜（SEM）的研究。他们在1000倍放大倍数下通过SEM观察牙釉质结构。他们观察了未经处理的微磨除牙釉质，并将其与用37%磷酸处理20秒的牙釉质进行比较。
在用微磨料材料处理的牙齿上未观察到蚀刻图案。牙釉质棱柱保持完整，核心未暴露。
微磨除能有效去除内源性氟斑牙染色，同时保护牙釉质。在这个病例中，一种不在任何牙齿颜色比色板范围内的褐色牙釉质颜色变浅了。
