Sengoku period-style tooth brushing
If you get a cavity, you can just go to the dentist, that’s the mindset of modern people. However, in the Sengoku period, there were no dentists. Furthermore, there was no habit of brushing teeth. This was because a stable supply of toothbrushes was not possible until synthetic resins derived from petroleum could be refined. However, Shizuko had always been brushing her teeth in modern times, so she couldn’t bear the thought of not brushing her teeth.
Shizuko had been using a gauze handkerchief she happened to have as a substitute for a toothbrush, but it was impossible to continue using it forever. So she decided to cultivate eggplants and mix salt with charred eggplant stems to use as toothpaste. The toothbrush was a custom-made item made from horsehair and other materials. With this, she had created an environment where she could brush her teeth in the morning and evening.
Shizuko’s behavior seemed eccentric to Nobunaga and others who did not have the habit of brushing their teeth as a matter of course. Tooth decay occurs due to excessive consumption of granulated sugar. Therefore, in the Sengoku period where sugar itself was valuable, the incidence of tooth decay was lower compared to modern times. However, for reasons unknown, the bacteria that cause tooth decay have existed since ancient times.
Oral care is important. In modern times, there is a difference of about thirteen years in the lifespan between those who brush their teeth and those who do not, including the risk of developing cancer due to not brushing. Furthermore, even though the rate of getting cavities may be low, if you don’t brush your teeth, you can develop periodontal disease. If all your teeth are lost due to periodontitis, you won’t be able to eat and there will be no other outcome but death. This is not only applicable to humans, but also to wild animals. If they lose their fangs, they cannot eat and will die.
“Aya-chan has gotten quite used to brushing her teeth, hasn’t she?”
“Yes, thanks to Shizuko forcefully opening my mouth and brushing the inside with dental floss.”
Aya was thoroughly drilled in the habit of brushing her teeth by Shizuko. Naturally, Aya would forget many times since she didn’t have the habit, but every time Shizuko would forcefully make her brush her teeth. At times, Shizuko would even restrain Aya to make her brush her teeth.
“Ahahaha, sorry Aya-chan. But I can’t stand people with unclean mouths, after all.”
I can endure Nobunaga since we are usually physically distanced, but I couldn’t stand the bad breath of Aya, who is close to me.
“Preventing periodontal disease is important. Not only is it more likely to occur if your teeth are misaligned.”
It goes without saying that teeth are important. Professional baseball players chew gum not because they want to eat sweets, but to activate blood flow to the brain, enhance concentration, and improve explosive power. Having good dental occlusion stabilizes the body’s balance and increases strength compared to those with misaligned teeth.
Even Kimyomaru (Oda Nobutada), Nagayoshi, Keiji, and Saizo were forced to adopt this toothbrushing habit. Eventually, it spread to Nobunaga, and then Mori Yoshinari, Hideyoshi, and Takenaka Hanbei started imitating him. Furthermore, even Nohime began to imitate him, so it goes without saying that there was a temporary eggplant shortage in Owari and Mino.
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