Nevárez-Rascón Martina, Molina-Frechero Nelly, Adame Edith, Almeida Ethel, Soto-Barreras Uriel, Gaona Enrique, Nevárez-Rascón Alfredo
Facultad de Odontología, Maestría en Estomatología, Universidad Autónoma de Chihuahua, Chihuahua 31000, México.
División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana, Xochimilco 04960, México.
World J Clin Cases. 2020 Feb 26;8(4):743-756. doi: 10.12998/wjcc.v8.i4.743.
Dental fluorosis is caused by excessive fluoride ingestion during tooth formation. As a consequence, there is a higher porosity on the enamel surface, which causes an opaque look.
The aim of this study was to identify a dental intervention to improve the smile in patients with tooth fluorosis. Additional aims were to relate the stain size on fluorotic teeth with the effectiveness of stain removal, enamel loss and procedure time using a manual microabrasion technique with 16% hydrochloric acid (HCL).
An experimental study was carried out on 84 fluorotic teeth in 57 adolescent patients, 33 females and 24 males, with moderate to severe fluorosis. The means, standard deviations and percentages were analyzed using nonparametric statistics and ArchiCAD 15 software was used for the variables including stain size and effectiveness of stain removal.
The average enamel loss was 234 µm and was significantly related to the procedure time categorized as 1-4 min and 4.01-6 min, resulting in a > 0.000. The microabrasion technique using 16% HCL was effective in 90.6% of patients and was applied manually on superficial stains in moderate and severe fluorosis. Procedure time was less than 6 min and enamel loss was within the acceptable range.
Microabrasion is a first-line treatment; however, the clinician should measure the average enamel loss to ensure that it is within the approximate range of 250 µm in order to avoid restorative treatment.
氟斑牙是由牙齿形成过程中摄入过量氟化物引起的。因此，牙釉质表面孔隙率更高，导致外观不透明。
本研究的目的是确定一种牙科干预措施，以改善氟斑牙患者的笑容。其他目的是使用含16%盐酸（HCl）的手动微磨除技术，将氟斑牙上的色斑大小与色斑去除效果、牙釉质损失和操作时间相关联。
对57名青少年患者（33名女性和24名男性）的84颗氟斑牙进行了一项实验研究，这些患者患有中度至重度氟斑牙。使用非参数统计分析均值、标准差和百分比，并使用ArchiCAD 15软件分析包括色斑大小和色斑去除效果在内的变量。
平均牙釉质损失为234 µm，与分类为1 - 4分钟和4.01 - 6分钟的操作时间显著相关，结果>0.000。使用16% HCl的微磨除技术在90.6%的患者中有效，手动应用于中度和重度氟斑牙的浅表色斑。操作时间少于6分钟，牙釉质损失在可接受范围内。
微磨除是一线治疗方法；然而，临床医生应测量平均牙釉质损失，以确保其在约250 µm的范围内，以避免进行修复治疗。
