An amount of fluoride is added to drinking water during the purification to harden the tooth enamel.The fluoride is also present in toothpastes for the same purpose
you should wait an hour, to enable the enamel to harden, as the sugar and acid in the juice will loosen the enamel if you brush straight away.
Yes, but it must be very dry and hard. So let it harden for a few weeks first.
If the Enamel is an original baked finish there should be no problem. Many DIY touch up paints are made from Acrylic Lacquer. If however the enamel is air-dried then the solvents in the lacquer will react and cause the enamel to bubble and craze. Enamel paints become hard on the surface but stay soft underneath if not baked to harden them. The lacquer is able to penetrate this outer layer and react with the enamel paint.
Minerals like calcium and phosphorus :)
They contain a substance called hardener.
Pronamel toothpaste is designed to help protect and strengthen enamel, but it doesn't literally "harden" teeth. Its formulation includes fluoride, which can help remineralize and strengthen enamel, making it more resistant to acid attacks and decay. Regular use can contribute to overall dental health, but it’s essential to maintain a comprehensive oral care routine for the best results.
Keratin... it's a natural substance that makes the nail harden.
They melt into mushy clay substance and remold into another shape and harden.
Petroleum jelly itself does not harden; it is a semi-solid, waxy substance at room temperature. However, when exposed to extreme cold temperatures, petroleum jelly can become more solid and difficult to spread.
"Harden" is the present tense. Ex. I harden the the cement by allowing it to dry. The past tense is hardened. The future tense is will harden.
Here is an excerpt from this site explaining kiln texturing:1. A method of making a mold with a textured mold surface comprising the steps of: coating a mold surface of the mold with a fusible inorganic enamel composition, then applying a particulate inorganic material to the unfused enamel composition coating, and heating the enamel composition to fix the particulate material in place thereon and to harden the enamel composition, then applying a second coating of inorganic enameling composition of thickness to the coated mold surface and particulate material so that the surface of the second coating reflects the texture of the hardened enamel composition with the particulate material fixed thereon. * http://www.freepatentsonline.com/4956200.html
Plaster of Paris readily hardens when mixed with water.