時々患者さんに質問されます。
「食後に直ぐブラッシングすると歯が溶けますか？」とか
「酸っぱいものを食べた後に直ぐブラッシングすると歯が溶けますか？」とか

いつも私の答えは、「可能なら食後直ぐにブラッシングして大丈夫です」とか
「そんなに気にされないで大丈夫ですよ」です。

少なくとも、スウェーデンの厚生労働省からの2022年の報告によると、

以下の９個の参考文献の中でも複数の研究結果をまとめたHong らの研究を引用しています。

その結論は、、、

「酸蝕侵襲後の遅延歯磨きは、即時歯磨きに比べてヒトエナメル質のETWを減少させる効果はなかった［…］」…さらに、今回の知見はin vitroおよびin situ試験に基づいているため、結果は慎重に解釈する必要があります。今回の知見を確認するためには、さらなるランダム化比較臨床試験が必要です。」

ですので、最高のエビデンスがあるというわけではありませんが、
今現在存在するエビデンス的には「わざわざブラッシングを後延ばしにする必要はない」と言えるのではないでしょうか。
同様に、「ブラッシングを後延ばしにした方がよい」というエビデンスはありません。

このような理由から、患者さんのご質問にはお答えしているわけです。

もっと詳しい情報を得たい方は、以下のリンクから英文献にアクセス可能です。

https://www.sbu.se/en/publications/responses-from-the-sbu-enquiry-service/toothbrushing-and-erosive-tooth-wear/#

さらに

参考文献のリンクも以下にありますので、ご興味がおありでしたら、どうぞ。

院長

 

—–

Patients sometimes ask me questions like,
“Does brushing your teeth immediately after eating cause tooth enamel erosion?” or
“Does brushing your teeth immediately after eating something acidic cause tooth enamel erosion?”

My usual response is, ‘If possible, it’s okay to brush your teeth immediately after eating,’ or
”There’s no need to worry too much about it.”

At least, according to a 2022 report from the Swedish Ministry of Health and Social Affairs,

Hong et al. cited multiple studies in their research, which summarized the results of the following nine references.

Their conclusion is…

Authors’ conclusion:
“Delayed toothbrushing after an erosive attack was not effective at decreasing the ETW of human enamel compared to immediate toothbrushing […].”…..”Moreover, since the present findings were based on in vitro and in situ studies, the results must be interpreted with caution. Further randomized controlled clinical trials are necessary to confirm the present findings.”

Therefore, while there is no definitive evidence,
based on the current evidence available, it can be said that “there is no need to deliberately delay brushing.”
Similarly, there is no evidence that “delaying brushing is better.”
For these reasons, we respond to patients’ questions in this manner.
For more detailed information, please refer to the following links to English-language literature.

https://www.sbu.se/en/publications/responses-from-the-sbu-enquiry-service/toothbrushing-and-erosive-tooth-wear/#

Additionally,
the links to the references are provided below, so please feel free to check them out if you are interested.
Director

References

  1. O’Toole S, Bernabe E, Moazzez R, Bartlett D. Timing of dietary acid intake and erosive tooth wear: A case-control study. J Dent. 2017;56:99-104. Available from: https://doi.org/10.1016/j.jdent.2016.11.005.
  3. Hong DW, Lin XJ, Wiegand A, Yu H. Does delayed toothbrushing after the consumption of erosive foodstuffs or beverages decrease erosive tooth wear? A systematic review and meta-analysis. Clin Oral Investig. 2020;24(12):4169-83. Available from: https://doi.org/10.1007/s00784-020-03614-9.
  5. Soares GG, Magalhaes PA, Fonseca ABM, Tostes MA, Silva EMD, Coutinho TCL. Preventive Effect of CPP-ACPF Paste and Fluoride Toothpastes Against Erosion and Erosion Plus Abrasion In Vitro – A 3D Profilometric Analysis. Oral Health Prev Dent. 2017;15(3):269-77. Available from: https://doi.org/10.3290/j.ohpd.a38160.
  7. Ferreira MC, Ramos-Jorge ML, Delbem AC, Vieirac Rde S. Effect of Toothpastes with Different Abrasives on Eroded Human Enamel: An in situ/ex vivo Study. Open Dent J. 2013;7(1):132-9. Available from: https://doi.org/10.2174/1874210601307010132.
  9. Ganss C, Schlueter N, Friedrich D, Klimek J. Efficacy of waiting periods and topical fluoride treatment on toothbrush abrasion of eroded enamel in situ. Caries Res. 2007;41(2):146-51. Available from: https://doi.org/10.1159/000098049.
  11. Jaeggi T, Lussi A. Toothbrush abrasion of erosively altered enamel after intraoral exposure to saliva: an in situ study. Caries Res. 1999;33(6):455-61. Available from: https://doi.org/10.1159/000016551.
  13. Lopes RM, da Silva JSA, Joao-Souza SH, Maximiano V, Machado AC, Scaramucci T, et al. Enamel surface loss after erosive and abrasive cycling with different periods of immersion in human saliva. Arch Oral Biol. 2020;109:104549. Available from: https://doi.org/10.1016/j.archoralbio.2019.104549.
  15. Lussi A, Lussi J, Carvalho TS, Cvikl B. Toothbrushing after an erosive attack: will waiting avoid tooth wear? Eur J Oral Sci. 2014;122(5):353-9. Available from: https://doi.org/10.1111/eos.12144.
  17. Soares GG, Magalhaes PA, Fonseca ABM, Tostes MA, Silva EMD, Coutinho TCL. Preventive Effect of CPP-ACPF Paste and Fluoride Toothpastes Against Erosion and Erosion Plus Abrasion In Vitro – A 3D Profilometric Analysis. Oral Health Prev Dent. 2017;15(3):269-77. Available from: https://doi.org/10.3290/j.ohpd.a38160.
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