Primary teeth start to erupt in children from the age of six months. The primary dentition is complete by approximately two and a half years of age. The enamel of primary teeth is less densely mineralized than the enamel of permanent teeth, making them particularly susceptible to caries. Primary teeth are essential tools, both for chewing and learning to talk. They help to break up food into small pieces, thereby ensuring efficient digestion. A full set of teeth is an essential prerequisite in learning correct pronunciation. Primary teeth also play a vital role in the proper alignment and spacing of permanent teeth; it is therefore imperative that they are well cared for and preserved until normal ex-foliation takes place. Establishing a proper oral care routine early on in life sets the foundation for the development of healthy and strong permanent teeth. In addition to good oral hygiene, diet also plays a key role in keeping teeth healthy. In this respect it is not only the quantity of sugar that is important, but also the frequency of consumption. As much as possible, children should be limited in the amount of sweets between meals, especially in the evening or at night.