Autor(es)

Sakae, Leticia Oba ; Kairalla, Claudia Allegrini ; Viana, Itallo Emidio Lira ; Carvalho, Thiago Saads ; Niemeyer, Samira Helena ; Hara, Anderson Takeo ; Scaramucci, Tais

• Tipo de documento: Artigo Científico
• Fonte: Journal of Dentistry; v. 143, p. 7-pg., 2024-03-02.

Resumo

Objectives: To assess the effect of different tin -containing toothpastes on the control of erosive tooth wear in enamel and dentin. Methods: Enamel and dentin slabs were randomly distributed into 7 experimental groups (n = 10/substrate): C-: negative control (Artificial saliva); AmF (regular fluoridated toothpaste without tin); Sn-1 (SnF2/NaF); Sn-2 (SnF2/NaF/SnCl2); Sn-3 (SnCl2/NaF); Sn-4 (SnF2/SnCl2); Sn-5 (SnCl2/AmF/NaF/chitosan). Specimens were submitted to 5 -day erosion -abrasion cycling. Surface loss (SL) was determined with an optical profilometer. Tin deposition on the tooth surfaces and some characteristics of the toothpastes (pH, potentially available F-, % weight of solid particles, and RDA) were also assessed. Data were statistically analyzed (alpha = 0.05). Results: For enamel, the Sn-2 presented the lowest SL, not differing significantly from AmF, C+, and Sn-3. The SL of these groups was significantly lower than the C-, except for Sn-3. Sn-1 and Sn-4 were also not significantly different from C-. For dentin, C- significantly showed the highest SL values, whilst, Sn-1 presented the lowest SL, not differing significantly from AmF, Sn-2, C+, and Sn-3. There was a significant positive association between enamel SL and the pH and tin deposition. Dentin SL was significantly negatively associated with the %weight of solid particles and RDA. Conclusions: Most of the tin -toothpastes were able to exhibit some protection against ETW. In this process, the toothpastes characteristics play a role, as lower enamel SL was significantly associated with lower pH values and tin deposition; and lower dentin SL was associated with higher %weight of solid particles and RDA of the toothpastes. Clinical significance: Tin -containing toothpastes can be used for erosive tooth wear protection, but our study showed that their effect depends on the pH, amount of tin deposition, % weight of solid particles and RDA of the toohpastes. (AU)

• Processo FAPESP: 21/04779-9 - Avaliação do efeito protetor de dentifrícios fluoretados contendo estanho contra o desgaste dental erosivo
• Beneficiário: Claudia Allegrini Kairalla
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 20/05374-0 - Investigação de uma alternativa para potencializar a proteção da película salivar adquirida contra a erosão dental associando polímeros formadores de filme e o fluoreto de sódio
• Beneficiário: Letícia Oba Sakae
• Modalidade de apoio: Bolsas no Brasil - Doutorado