Effects of brushing timing after erosive challenge on enamel loss &lt;i&gt;in situ&lt;/i&gt;: White light interferometer and nanoindentation study

Tsuda, Yuka; Kitasako, Yuichi; Sadr, Alireza; Nakashima, Shinsuke; Tagami, Junji

doi:10.4012/dmj.2015-405

Cited by 9 publications

(5 citation statements)

References 38 publications

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“…However, the João-Souza et al [35] protocol does not represent typical consumer/patient behavior, for example, where toothbrushing happens immediately after the acid erosion challenge and there is no exposure to artificial saliva between acid erosion challenge and toothpaste treatment. The importance of this has been shown in a number of studies where following acid treatment, the subsequent exposure to artificial saliva or saliva for 30-60 min before brushing, reduced the overall wear to enamel compared to no exposure [36,37]. In addition, the enamel specimens in the João-Souza et al [35] protocol do not have any artificial saliva exposure immediately after the toothpaste treatment.…”

Section: Discussionmentioning

confidence: 99%

Protective effect of calcium silicate toothpaste on enamel erosion and abrasion in vitro

Buzalaf

Levy

Gomes

et al. 2021

Heliyon

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To compare in vitro the effect of a toothpaste containing fluoride (F), calcium silicate (CaSi) and sodium phosphate salts to conventional toothpaste (NaF) on human enamel specimens submitted to erosive and abrasive challenges. Methods: 48 sound and 48 enamel samples pre-treated with 1% citric acid were divided into 4 groups (n ¼ 12): Group 1-Non-fluoride toothpaste; Group 2-NaF toothpaste (1450 ppmF); Group 3-CaSi toothpaste (1450 ppmF; MFP); Group 4-Erosion only. The samples were subjected to pH cycling (3 cycles/day; 90s; 1% citric acid, pH 3.6) and to abrasion for 7 days. After the 1 st and the last cycle, they were submitted to abrasion (15s, 1.5N load), using a brushing machine, soft toothbrush and toothpaste slurry (1:3; 15ml/sample) and then immersed in the slurry for 45s. Samples were immersed in artificial saliva between the challenges. Enamel loss was evaluated using profilometry on days 3 and 7. Data were analysed by ANOVA and Tukey's test (p < 0.05). Results: For sound enamel at baseline, mean (AESD) enamel loss (μm) for groups 1-4 on day 3 was 2.15 AE 0.35 a , 1.20 AE 0.22 b , 0.95 AE 0.19 b and 1.98 AE 0.32 a ; on day 7 was 3.05 AE 0.40 a , 2.07 AE 0.32 b , 1.36 AE 0.33 c and 3.69 AE 0.27 d respectively. For acid-softened enamel at baseline, enamel loss on day 3 was 3.16 AE 0.19 a , 2.17 AE 0.14 b , 1.70 AE 0.11 c and 3.04 AE 0.19 a ; on day 7 was 3.92 AE 0.25 a , 3.07 AE 0.13 b , 2.09 AE 0.15 c and 3.87 AE 0.25 a respectively. Conclusions: Both F toothpastes led to significantly higher enamel protection from short-term erosion and abrasion in comparison to the non-F toothpaste and erosion only. In the longer term, CaSi toothpaste conferred significantly higher protection than NaF toothpaste. Clinical significance: The results showed that for the longer term the CaSi toothpaste provided significantly higher protection than the NaF toothpaste, which indicates a good potential of the former to help prevent erosive tooth wear.

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Section: Discussionmentioning

confidence: 99%

Protective effect of calcium silicate toothpaste on enamel erosion and abrasion in vitro

Buzalaf

Levy

Gomes

et al. 2021

Heliyon

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“…In the current study, the dentin was demineralized for 13 h in EDTA solution to simulate the severelydemineralized dentin condition 14 . The load (250 g), brushing time and frequency used in the tooth brushing test were considered to closely replicate the daily situation 16,17 as oral healthcare measures (e.g. tooth-brushing) Figure 3.…”

Section: Discussionmentioning

confidence: 99%

“…The dentifrice slurry was prepared immediately before use. The slurry was diluted using a 1-part fluoride dentifrice (CLINICA, Lion, Tokyo, Japan, 950 ppm F) and 3-parts distilled water 17 . After brushing, the samples were rinsed with distilled water until all visible remnants of toothpaste were removed.…”

Section: Brushing Proceduresmentioning

confidence: 99%

Effects of mechanical abrasion challenge on sound and demineralized dentin surfaces treated with SDF

Sayed

Tsuda

Matin

et al. 2020

Sci Rep

Self Cite

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This study evaluated the effect of mechanical abrasion on the surface integrity, color change (ΔE) and antibacterial properties of demineralized and sound dentin surfaces treated with silver-diammine-fluoride (SDF). The dentin specimens were divided into two groups: sound and demineralized dentin, then divided into three sub-groups, control (no-treatment), SDF, and SDF + potassium-iodide (KI). Each sub-group was further divided into two groups, one exposed to mechanical brushing and the other without brushing. Specimens were analyzed for the ΔE, surface roughness/surface loss and antibacterial properties (CFU, optical density and fluorescent microscope). Repeated Measures ANOVA was used for statistical analysis of color change while one-way ANOVA was used for CFU analysis. SDF and SDI + KI groups showed significant reduction in ΔE with brushing in the sound dentin group unlike the demineralized group. The surface roughness values were higher for both SDF and SDF + KI groups but roughness values significantly decreased after brushing. Both SDF and SDF + KI groups revealed significantly less surface loss than control. The SDF group showed high anti-bacterial effect after brushing, unlike SDF + KI group. So, we concluded that mechanical brushing improved the esthetic outcome. While, SDF and SDF + KI could protect the dentin surface integrity. SDF-treated dentin possesses an antibacterial property even after mechanical brushing.

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“…Reports on the timing of tooth brushing have mainly focused on its relationship with demineralization of the teeth [12,13,14]. To our knowledge, there are no reports on the relationship between tooth brushing timing and systemic diseases, including cardiovascular diseases.…”

Section: Introductionmentioning

confidence: 99%

Not brushing teeth at night may increase the risk of cardiovascular disease

Isomura

Suna

Kurakami

et al. 2023

Preprint

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In this study, we investigated whether tooth brushing timing affects cardiovascular disease risk. We enrolled 1,675 patients aged ≥ 20 years who were hospitalized for treatment, examination, or medical treatment. The participants were categorized based on tooth brushing: Group MN (brushing teeth after waking up and at night, n = 409), Group N (brushing teeth at night but not upon waking up, n = 751), Group M (brushing teeth after waking up but not at night, n = 164), and Group None (not brushing teeth at all, n = 259). The participants’ age, sex, smoking history, and follow-up results, was evaluated. Group M had four times as many men as women. Multivariate analysis of cardiovascular events showed significantly higher survival estimates in Group MN (P = 0.021) and Group N (P = 0.004) than those in Group None. Kaplan–Meier analysis of subgroups based on smoking status revealed that smokers in Group None had a significantly worse prognosis for cardiovascular onset events than smokers in other groups; non-smokers in Groups None and M showed a significantly worse prognosis on hospitalization. Our findings are limited to cardiovascular diseases and cannot be generalized to healthy populations. However, we suggest that brushing teeth at night is important for lowering cardiovascular disease risk.

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Effects of brushing timing after erosive challenge on enamel loss <i>in situ</i>: White light interferometer and nanoindentation study

Cited by 9 publications

References 38 publications

Protective effect of calcium silicate toothpaste on enamel erosion and abrasion in vitro

Protective effect of calcium silicate toothpaste on enamel erosion and abrasion in vitro

Effects of mechanical abrasion challenge on sound and demineralized dentin surfaces treated with SDF

Not brushing teeth at night may increase the risk of cardiovascular disease

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