Advanced Materials:安装在牙齿上的传感器,帮助你追踪都吃了什么

2018-03-26 遇见未来 康健新视野

实时监测在我们的身体内部和周围发生的事情,在卫生保健或临床研究中是无价的,但却不是那么容易做到的。不过,这一点可能很快就会改变,这要归功于塔夫茨大学工程学院(Tufts University School ofEngineering)的研究人员开发的新型微型传感器。


安装在牙齿上的无线传感器。图片来源:SilkLab,Tufts University

实时监测在我们的身体内部和周围发生的事情,在卫生保健或临床研究中是无价的,但却不是那么容易做到的。不过,这一点可能很快就会改变,这要归功于塔夫茨大学工程学院(Tufts University School ofEngineering)的研究人员开发的新型微型传感器。

该传感器可以直接安装在牙齿上,并与移动设备进行无线通信,可以传输有关葡萄糖、盐和酒精摄入的信息。在即将发表在《Advanced Materials》杂志上的一项研究中,研究人员指出,这些传感器未来可以帮助检测和记录营养摄入、化学物质以及生理状态。

以前用于监测饮食摄入量的可穿戴设备具有一定的限制性,比如需要使用口腔防护器、笨重的布线,或者因为传感器迅速退化需要频繁更换。Tufts 的工程师们寻找了一种更具可用性的技术,开发了这种仅 2mmx2mm 的传感器,可以灵活地与牙齿的不规则表面保持一致和粘结。与在高速公路上收取通行费的方式类似,传感器通过无线方式将数据传输到接收的射频信号上。

传感器由三层夹层组成:一个中央的“生物反应层”,它吸收了被探测到的营养物质或其他化学物质,外层由两个方形的金环组成。这三个层合在一起就像一个微型天线,在射频频谱中收集和发射波。当一波即将到来的波冲击传感器时,其中一些会被抵消掉,而其余的则会传回来,就像一块蓝色的颜料会吸收红光的波长,并将蓝色反射回我们的眼睛。

然而,传感器可以改变它的“颜色”。例如,如果中央层吸收了盐或乙醇,它的电性能就会改变,导致传感器吸收和传输不同强度的射频波,因而营养和其他分析物就可通过这种方法来检测和测量。

“理论上,我们可以修改这些传感器的生物反应层,以靶向其他化学物质,” Fiorenzo Omenetto 博士说,他是 Tufts 大学的通讯作者和 Frank C. Doble 工程教授。“我们已经将普通射频识别技术扩展到一个传感器包,它可以动态地读取和传输环境信息,无论是在牙齿、皮肤还是其他表面上。”

目前,研究人员还是主要将目标集中在通过这种传感器,追踪用户的饮食成分摄入。对于正常人群来说,监测饮食摄入可以帮助我们维持健康。对于有特殊需要的人群来说,这种传感器有望帮助那些需要规范饮食的患者,例如糖尿病或者食物过敏,进行饮食摄入的实时监测,帮助他们获得更高品质的生活。

原始出处:

Tseng P, Napier B, Garbarini L, Kaplan DL and Omenetto F. Functional, RF-trilayer sensors for tooth-mounted, wireless monitoring of the oral cavity and food consumption. Advanced Materials, 2018 DOI: 10.1002/adma.201703257.

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    2018-03-28 zhouqu_8
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    2018-03-28 mjldent
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    2018-03-27 changjiu

    学习一下.谢谢

    0

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    2018-03-26 神功盖世

    0

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这篇研究的目的是为了评估2种家庭漂白疗法对四环素染色牙齿(TST)美白效果的差异。

牙齿发育异常的外科治疗

牙齿发育异常是儿童牙病中的常见疾病,根据临床表现可分为4类:牙齿数目异常、牙齿形态异常、牙齿结构异常及牙齿萌出与脱落异常。目前,牙齿发育异常的病因尚不明确,从宏观上看包括遗传和环境因素的作用,其中,遗传因素起重要作用。而有一些牙齿发育异常是牙胚发育期受外来有害因素影响的结果,如乳牙外伤的机械外力、牙胚周围的感染等可造成继承恒牙的结构和形态异常等。 牙齿发育异常的治疗涉及牙体修复、牙列

研究称女性生孩子越多牙齿掉越多

据俄罗斯卫星网14日报道,德国和荷兰科学家研究发现,女性生孩子越多,牙齿掉得越多。据悉,相关研究被发表在《流行病学和社区健康》杂志上。据报道,研究人员从14国收集了2万名平均年龄为67岁的女性资料,将女性所生孩子数量与掉落的牙齿数量进行对比。经研究,科学家发现这些女性平均掉牙齿10颗,孩子生得越多,剩的牙齿越少;生3个孩子的女性比生2个孩子的女性平均多掉4颗牙。据研究人员解释称,怀孕时产生的激素会