Experts believe that thumb-sucking should be discouraged as it can cause problems for growing teeth. However, it is unlikely to be a major issue for dental development unless your child is still doing it when his big teeth come through at around age six.

Can thumb-sucking deform your child’s teeth?

If your child seems to be applying a lot of pressure with his tongue and sucking very forcefully, the growth and positioning of his teeth is much more likely to be affected. In this case, try to gently discourage it, especially as he gets a bit older. If he seems to be lightly sucking or just holding his thumb in his mouth it should not be much of a cause for concern.

In some cases thumb-sucking can interfere with the way the teeth grow to the extent that children may need braces to correct them later on.

Will teeth-grinding damage your toddler’s teeth?

Teeth-grinding (“bruxism”) is a really common habit amongst babies and young children, with around half of them doing it at some point in their childhood. Most children that grind their teeth do it in their sleep, so may be completely unaware that they are doing it. Although it can be pretty unbearable to listen to, it is usually quite harmless.

A lot of babies start grinding their teeth when the first few front ones appear, perhaps because of the unfamiliar feel of having little teeth in their previously gummy mouths! Your child might be grinding her teeth if teething is causing her discomfort, or if she is suffering from a cold or virus.

Most children grow out of the habit soon enough so try not to worry. If your child seems to be doing it almost constantly you could ask your dentist to have a look and give you some advice. Otherwise, the best approach is probably a relaxed one.