Cárdenas Flores Aurora, Flores Reyes Héctor, Gordillo Moscoso Antonio, Castanedo Cázares Juan Pablo, Pozos Guillén Amaury de J
Pediatric Dentistry Posgraduate Program, Facultad de Estomatología, Universidad Autónoma de San Luis Potosí, México.
J Clin Pediatr Dent. 2009 Spring;33(3):187-91. doi: 10.17796/jcpd.33.3.c6282t1054584157.
The objective of this study was to evaluate the clinical efficacy of 5% sodium hypochlorite solution for removal of stains caused by dental fluorosis in young patients. A clinical trial involved 33 patients with diffuse opacities on the enamel surfaces of maxillary incisors due to effects of dental fluorosis. The protocol of treatment 3 steps: (1) cleaning and enamel etching with 37% phosphoric acid in order to eliminate the layer that covers the fluorotic enamel surface and allow better penetration of the bleaching agent, (2) application of 5% sodium hypochlorite to remove stains caused by organic material, and (3) filling the opened micro-cavities with a light-cured, composite surface sealant to prevent restaining. The whiteness of the enamel lesions before and after treatment were expressed in L*, a*, and b* color space measurements using a Minolta Chroma Meter CR300. Analysis of parameters of [symbol:see text]E (L*, a*, b*) showed that changes were observed in the L* (brightness) and a* (redness), which paralleled the [symbol: see text]E differences. There was no significant difference in the b* (yellow) parameter. The technique described in this study appears to have advantages over other methods for improving the appearance of fluorotic lesions. It is simple, low cost, non invasive so the enamel keeps its structure, relatively rapid, and safe; it requires no special materials, and it can be used with safety on young permanent teeth.
本研究的目的是评估5%次氯酸钠溶液去除年轻患者牙齿氟斑所致污渍的临床疗效。一项临床试验纳入了33例因牙齿氟斑影响导致上颌切牙釉质表面出现弥漫性混浊的患者。治疗方案包括3个步骤：（1）用37%磷酸进行清洁和釉质酸蚀，以去除覆盖氟斑釉质表面的层，使漂白剂能更好地渗透；（2）应用5%次氯酸钠去除由有机物质引起的污渍；（3）用光固化复合表面封闭剂填充开放的微腔以防止再次染色。使用美能达色差仪CR300在L*、a和b颜色空间测量中表示治疗前后釉质病变的白度。对ΔE（L*、a*、b*）参数的分析表明，在L*（亮度）和a*（红色度）方面观察到了变化，这与ΔE差异平行。b*（黄色度）参数没有显著差异。本研究中描述的技术在改善氟斑病变外观方面似乎比其他方法具有优势。它简单、成本低、非侵入性，因此釉质保持其结构，相对快速且安全；它不需要特殊材料，并且可以安全地用于年轻恒牙。
