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美白牙贴会损害牙齿中的蛋白质

kira86 于2019-04-23发布 l 已有人浏览
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生物化学家,研究了美白亚铁二中的主要成分,对牙齿的影响。研究表明,美白牙齿的次数越多,能恢复的蛋白质就越少。
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美白牙齿.jpg
Whitening Strips Alter Proteins in Teeth

美白牙贴会损害牙齿中的蛋白质

Of all the stuff you can buy on eBay - here's a new one: human teeth. "I think I probably averaged maybe $5 a tooth." Kelly Keenan, a biochemist at Stockton University in New Jersey. Keenan chased down the chompers to investigate what whitening strips do to a tooth's chemical composition. So she stuck the teeth in styrofoam, applied the whitening strips per manufacturer instructions, and added some artificial saliva: a liquid mixture at the pH and with salts you'd find in regular spit.

在eBay上能买到的所有东西中,有一件你之前肯定没听说过——在ebay上还能买到人类的牙齿。“我平均一颗牙花了大概5美元。”新泽西州斯托克顿大学的生物化学家凯利·基南表示到。基南(购买并)追踪这些牙齿,以研究美白牙贴对牙齿化学成分的影响。所以她按照各牙贴制造商的说明贴上美白贴片,并添加了一些人工唾液——pH值为液体的混合物,含有你在普通唾液中可以找到的盐分,然后将牙齿放置在泡沫聚苯乙烯制成的容器中。

Treatments complete, she extracted proteins from the teeth. And found that the more rounds of whitening the teeth experienced, the fewer proteins she could recover - because hydrogen peroxide in the whitening strips was snipping chemical bonds."The bigger picture is that hydrogen peroxide can penetrate the enamel and dentin and it can cause your proteins to break down. And smaller pieces are removed from those proteins."

美白护理结束后,她从牙齿中提取蛋白质。发现,美白牙齿的次数越多,能恢复的蛋白质就越少——因为美白牙贴中的过氧化氢会剪断化学键作用。“更重要的是过氧化氢可以穿透牙釉质和牙质,导致蛋白质分解。而较小的碎片会被从这些蛋白质中移除。”

She and her undergraduate students presented on that research at the 2019 Experimental Biology meeting in Orlando. This is just a preliminary study for now. And the pulp of your teeth can replenish proteins in the dentin, though not the enamel - so it's unclear whether these effects would cause permanent damage in real, living teeth. One thing's for sure: supplies of teeth for experiments seem to be plentiful.

她和她的本科学生在2019年奥兰多实验生物学会议上展示了这项研究。这只是目前的初步研究。牙齿的牙髓可以补充牙本质中的蛋白质,但不能补充牙釉质——所以目前还不清楚这些影响是否会对活人口腔中的牙齿造成永久性损伤。但有一件事是肯定的:用于实验的牙齿的蛋白质含量似乎是充足的。

I think I bought a set of 15. And the person's like, let me know if you need more. This person also claimed the teeth were from his mouth, which, you don't have that many more to go!

“我应该是买的一套15颗的。而且卖家这个人还表示,如果你还要买更多,请告诉我。卖家还表示售卖的牙齿真的是从他口腔离脱落下来的,而这表示他已经没几颗牙了!!”

小e英语Jewel翻译!

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