It is normal for swelling to occur after wisdom teeth removal. This is a part of the healing. But if the swelling is severe, your sister should see her dentist or an oral surgeon for a review.

If your little boy has swallowed a Bipilac tablet by mistake, don't panic. The most frequent symptoms of ingestion are upset stomach and perhaps some vomiting or diarrhea. The reason for this is that the stomach doesn’t like the pill. To make him feel better, make sure he drinks plenty of water and keep an eye on him constantly. It’s important to observe any strange behavior in your child and if there is any, call your local poison control centre at once. 

It seems you are suffering from a toothache that is leading to a cavity, which is a very frequent dental problem. This issue is caused by the decay of a tooth that is mainly due to bacteria. Symptoms like pain are the signals that might indicate the condition needs attention. Then the dentist will identify the area of decay and manage it with a filling or, in case of severe damage, a root canal. Along with taking care of the teeth by brushing and flossing daily, oral hygiene can help you stay healthy and away from other problems. Therefore, the treatment by a doctor will help you get the best way to your full recovery and also make your tooth comfortable to live with.

Malpositioned teeth can lead to problems such as difficulty in chewing and talking. It is the result of genetic factors or the acquisition of certain habits like sucking thumb. Braces are a well-known method for fixing such problems. They slowly shift your teeth to the desired position. Do not be afraid, as many teenagers your age wear braces, and is completely normal. But, you can visit an orthodontist to learn more about it.