Do fluoride toothpastes have similar preventive effect in permanent and primary teeth against erosive tooth wear?

Abstract

Background Little is known about fluoride toothpastes effect on primary teeth submitted to erosive tooth wear. Objectives To evaluate the preventive effect of different toothpastes on surface loss (SL) after severe erosion/abrasion model and to compare this effect between permanent (PT) and primary teeth (pt). Design Enamel samples were randomly divided according toothpastes groups (n = 17). G1: placebo; G2: NaF; G3: AmF‐NaF‐SnCl2 anti‐erosion; G4: SnF2; and G5: NaF anti‐erosion for children. Samples were incubated in artificial saliva (1 hour), submitted to erosive challenge (3 minutes; 1% citric acid; pH3.6; at 25°C) and to toothbrush abrasion (2 minutes slurry immersion; 50 strokes; 200 g) during 30 cycles. Surface loss (μm; mean ± SD) was quantified by contactless profilometry. The effects of the two covariables “tooth” and “toothpaste” were analysed by non‐parametric ANOVA, variables with significant effects were tested by Wilcoxon tests. Results pt showed significantly higher surface loss than PT in all groups (P < 0.001). The mean values of SL of each group were: G1 PT 18.18(±3.98), pt 25.65(±9.21); G2 PT 14.76(±2.82), pt 18.11(±3.92); G3 PT 12.62(±5.29), pt 15.61(±6.70); G4 PT 17.12(±2.24), pt 23.41(±7.9); G5 PT 13.24(±1.29), pt 18.28(±8.96). Conclusions In permanent teeth, G3 showed the best preventive effect. In primary teeth, G1, G3, and G5 showed similar effect.

Effects of different toothpastes on the prevention of erosion in composite resin and glass ionomer cement enamel and dentin restorations

“…15,16 The concentration of silica abrasive particles may play a key role in the loss of dental substrates, 15,20 especially with the use of toothbrush. 5,30 WF and SnF 2 -based toothpastes caused similar levels of wear on ECR, DCR, and DRMGIC surfaces. to cause the lowest enamel loss, corroborating our results (4.95-5.03 μm).…”

“…29 SNF 2 is theoretically more resistant to erosion for forming a layer on the demineralized enamel and occluding dentinal tubules after an erosive process. 5 Figure 3d and 3f demonstrate SNF 2 -and NaFbased toothpastes action on dentinal tubule occlusion.…”

“…23 We included erosionabrasion cycles in our study to simulate a more realistic clinical situation. 5 Some studies evaluated toothpastes available on the market whereas others evaluated manipulated formulations. 12,[14][15][16] However, our study The surface wear of dental substrates and restoration interfaces involving enamel after erosionabrasion cycles differed according to the applied toothpaste, rejecting our first null hypothesis.…”

“… 23 We included erosion-abrasion cycles in our study to simulate a more realistic clinical situation. 5 Some studies evaluated toothpastes available on the market whereas others evaluated manipulated formulations. 12 , 14 - 16 However, our study aimed to evaluate the effects of toothpastes containing different abrasives, according to the relative dentin abrasion (RDA) values reported by manufacturers.…”

“…2 - 4 ETW treatment relies on strategies to improve dental tissues resistance against erosion and, when necessary, on the use of restorative treatments. 5 , 6 Composite resins (CR) and resin-modified glass ionomer cements (RMGIC) are often applied in restoration. 7 However, they are susceptible to erosive acids action, which may decrease their clinical effectiveness and longevity.…”