The effect of fluoride toothpaste on root dentine demineralization progression: a pilot study

Abstract

The anticaries effect of fluoride (F) toothpaste containing 1100 µg F/g in reducing enamel demineralization is well established, but its effect on dentine has not been extensively studied. Furthermore, it has been shown that toothpaste containing a high F concentration is necessary to remineralize root dentine lesions, suggesting that a 1100 µg F/g concentration might not be high enough to reduce root dentine demineralization, particularly when dentine is subjected to a high cariogenic challenge. Thus, the aim of this pilot study was to evaluate in situ the effect of F toothpaste, at a concentration of 1100 µg F/g, on dentine demineralization. In a crossover and double-blind study, conducted in two phases of 14 days, six volunteers wore a palatal appliance containing four slabs of bovine root dentine whose surface hardness (SH) was previously determined and to which a 10% sucrose solution was applied extra-orally 8×/day. Volunteers used a non-F toothpaste (negative control) or F toothpaste (1100 µg F/g, NaF/SiO 2 ) three times a day. On the 10 th and 14 th days of each phase, two slabs were collected and SH was determined again. Dentine demineralization was assessed as percentage of SH loss (%SHL). The effect of toothpaste was significant, showing lower %SHL for the F toothpaste group (42.0 ± 9.7) compared to the non-F group (62.0 ± 6.4; p < 0.0001), but the effect of time was not significant (p > 0.05). This pilot study suggests that F toothpaste at 1100 µg F/g is able to decrease dentine caries even under a high cariogenic challenge of biofilm accumulation and sugar exposure.

Atitudes e conhecimento dos pais quanto ao uso de dentifrícios fluoretados em crianças de um a 65 meses de idade

“…Com relação à higiene bucal ser realizada sozinha ou com ajuda, em 12,2% ela é realizada somente pela criança, em 47,7% estar declinando, ela ainda é considerada um relevante problema de saúde pública. De acordo com os dados do SB Brasil de 2010, o índice de dentes ceo-d (superfícies cariadas, extração indicada, obturadas) em crianças de 5 anos de idade passou de 2,8, em 2003, para 2,3, em 2010, uma redução de apenas 17%, com 80% desses dentes não tratados 2 . A utilização de flúor na prevenção e no controle da cárie é uma das medidas de saúde pública mais estudadas [3][4][5] . Atualmente, uma das formas mais amplas da utilização do flúor é o emprego de dentifrícios fluoretados associados à escovação mecânica 4 .…”

>i<In vitro>/i< and >i<in situ>/i< evaluation of the effects of high-fluoride and arginine-based toothpastes to control root caries

“…The anticaries potential of conventional F toothpastes in reducing enamel caries is well established ]. In the article 1 and in a previous in situ study, it was also suggested that conventional toothpaste is able to decrease root dentin dental caries, when compared to non-F toothpaste (BOTELHO et al, 2014). Therefore, we speculate that only in patients that are at high-risk to develop dental caries, such as elderly population and patients undergoing radiotherapy of head and neck, high-F toothpastes must be used.…”