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 .
0 Teeth cut, tear and grind food so it can be swallowed and digested. 1 Children have 20 milk (baby) teeth. 2 From about age 6 they fall out one by one and are replaced by adult teeth; an adult has 32 teeth. 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 Each tooth is covered by enamel, the hardest material in the body. 5 But germs in the mouth eat sugar left on the teeth and make acid, and the acid makes holes called cavities. 6 Brushing twice a day with fluoride toothpaste, eating fewer sugary snacks and visiting the dentist keep teeth healthy. 7 A grown-up tooth that is lost does not grow back. 8 Children have 20 milk teeth. 9 An adult has 32 teeth. 10 Milk teeth begin to fall out at around age 6 and adult teeth grow in their place. 11 Incisors at the front cut food. 12 Canines are pointed teeth for tearing food. 13 Molars at the back grind and crush food. 14 Enamel, the outer layer of a tooth, is the hardest material in the body. 15 Germs in the mouth turn sugar into acid that damages enamel. 16 A hole in a tooth caused by decay is called a cavity. 17 Fluoride in toothpaste helps make enamel stronger. 18 We should brush our teeth twice a day for about two minutes. 19 Adult teeth do not grow back if they are lost. ← previous The brain, nerves and the five sensesnext → Healthy food, water and vitamins↑ back to World This page in Markdown → https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/