During the first 12 years of life, the mouth endures great changes. Every age requires specific care to respond to the different physiological situations which the oral cavity undergoes and to thus ensure its proper development. Good oral hygiene should start at a younger age than is usually believed. Oral cleaning during childhood, together with acquiring the habit of its maintenance, will result in adults being able to conserve their teeth for their entire lives. Therefore, it is important for this practice to start from birth, without waiting for the first teeth to appear. This way, the baby's mouth is kept clean of debris, and the baby becomes accustomed to this habit and caries can be prevented.