--- title: Teeth and their care — a lesson of Mova's school · trees and pragmatics description: «Teeth and their care», a lesson of the world course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: Teeth cut, tear and grind food so it can be swallowed and digested. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [World](https://md.mova.elamur.ai/free/en/corpora/school/world/) / Teeth and their care # Teeth and their care Lesson 35 of the world course of Mova's primary school: 20 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/world/35-teeth-and-care/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/0/) — Teeth cut, tear and grind food so it can be swallowed and digested. - [1](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/1/) — Children have 20 milk (baby) teeth. - [2](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/2/) — From about age 6 they fall out one by one and are replaced by adult teeth; an adult has 32 teeth. - [3](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/3/) — There are different teeth for different jobs: sharp incisors at the front cut, pointed canines tear, and wide molars at the back grind. - [4](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/4/) — Each tooth is covered by enamel, the hardest material in the body. - [5](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/5/) — But germs in the mouth eat sugar left on the teeth and make acid, and the acid makes holes called cavities. - [6](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/6/) — Brushing twice a day with fluoride toothpaste, eating fewer sugary snacks and visiting the dentist keep teeth healthy. - [7](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/7/) — A grown-up tooth that is lost does not grow back. - [8](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/8/) — Children have 20 milk teeth. - [9](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/9/) — An adult has 32 teeth. - [10](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/10/) — Milk teeth begin to fall out at around age 6 and adult teeth grow in their place. - [11](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/11/) — Incisors at the front cut food. - [12](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/12/) — Canines are pointed teeth for tearing food. - [13](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/13/) — Molars at the back grind and crush food. - [14](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/14/) — Enamel, the outer layer of a tooth, is the hardest material in the body. - [15](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/15/) — Germs in the mouth turn sugar into acid that damages enamel. - [16](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/16/) — A hole in a tooth caused by decay is called a cavity. - [17](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/17/) — Fluoride in toothpaste helps make enamel stronger. - [18](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/18/) — We should brush our teeth twice a day for about two minutes. - [19](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/19/) — Adult teeth do not grow back if they are lost. - ← previous: [The brain, nerves and the five senses](https://md.mova.elamur.ai/free/en/corpora/school/world/34-brain-nerves-senses/) - next →: [Healthy food, water and vitamins](https://md.mova.elamur.ai/free/en/corpora/school/world/36-healthy-food/) - ↑ back to [World](https://md.mova.elamur.ai/free/en/corpora/school/world/)