An active tooth, comprising a light sensing means, a fluid dispensing means, and an atomizer, wherein the fluid dispensing means and the atomizer are fluidly connected and the exuding fluid contained in the fluid distributing means is evenly distributed to a target surface through the atomizer. A device for detecting erosion and / or tooth erosion.光検知手段、流体分配手段、およびアトマイザーから成り、流体分配手段およびアトマイザーは流体連結され、流体分配手段内に収められた染出流体がアトマイザーを通じて対象表面に均一に分配される、活性的歯牙う蝕および／または歯牙侵食の検出装置。
