Maternal Perinatal Institute, Lima, Peru.
Universidade Federal de Minas Gerais - UFMG, Department of Pediatric Dentistry and Orthodontics, Belo Horizonte, MG, Brazil.
Braz Oral Res. 2019 Jul 1;33:e051. doi: 10.1590/1807-3107bor-2019.vol33.0051.
The aim of the present study was to determine the concentration of total fluoride (TF) and total soluble fluoride (TSF) in children's dentifrices marketed in the city of Lima, Peru. Three samples of 23 dentifrices (4 without fluoride and 19 with fluoride) were purchased in different pharmacies in Lima, Peru. The TF and TSF concentrations found in the dentifrices were determined by ion-selective electrode, expressed in ppm F (μg F/g of dentifrice). The TF concentration in the majority of the fluoride toothpastes matched that shown on the label, except for one declared as 1450 ppm F by the manufacturer, whereas only 515.1 ppm F was found. The concentration of TSF found in the fluoride toothpastes ranged from 457.5 to 1134.8 ppm F. All the dentifrices were formulated with silica, but one also presented calcium carbonate. In conclusion, 83% of the children's dentifrices marketed in Lima, Peru, were fluoridated, but only 53% contained a TSF concentration greater than 1000 ppm F, the minimum concentration required to provide an anticaries effect.
本研究旨在测定秘鲁利马市销售的儿童牙膏中的总氟（TF）和总可溶氟（TSF）浓度。从秘鲁利马的不同药店购买了 23 种牙膏（4 种无氟和 19 种含氟）的 3 个样本。通过离子选择性电极测定牙膏中的 TF 和 TSF 浓度，以 ppm F（牙膏中 F 的μg/g 表示）表示。除了一种制造商宣称的氟含量为 1450ppm F 而实际只发现 515.1ppm F 的情况外，大多数含氟牙膏中的 TF 浓度与标签上的一致。在含氟牙膏中发现的 TSF 浓度范围为 457.5 至 1134.8ppm F。所有牙膏均用二氧化硅配制，但有一种牙膏还含有碳酸钙。总之，在秘鲁利马市销售的儿童牙膏中，有 83%是含氟的，但只有 53%的牙膏中 TSF 浓度大于 1000ppm F，这是提供抗龋效果所需的最小浓度。
