25.01.10
Tooth decay is the single most common chronic disease in Irish children. More than half of five-year-olds have one or more teeth that are decayed, filled or are extracted because of decay.
Half of all 12-year-olds and three quarters of all 15-year-olds have experienced decay in their permanent teeth. The good news is parents can do a lot to prevent this from happening.
The time when babies get their first primary teeth (milk teeth) varies. A few are born with a tooth already through. Others have no teeth at one year. Most get their first tooth at around six months.
I remember waiting for 13 months for my daughter's first tooth to appear and, like many parents, put every whine, cough or cold prior to the eruption down to 'teething'. Most have all their primary teeth by about two-and-a-half. The first permanent, 'second', teeth come through at around the age of six. There are 20 primary teeth in all, 10 at the top and 10 at the bottom.
Tooth decay is caused by bacteria and sugars from food or liquids building up on a tooth. Over time, these bacteria dissolve the enamel, or outer layer, of the tooth. This damaged area is called a cavity. Regular brushing prevents the build-up of bacteria and sugars and the damage they cause. Some teeth come through with no pain or trouble at all. At other times you may notice that the gum is sore and red where the tooth is coming or that one cheek is flushed.
Source: Irish Independent