I would recommend that you get to the dentist today. A visit to the ER will only offer a temporary solution. This condition would be treated by a dentist.

The tooth starts to ache which suggests that you may have a cavity. If you do not take care of it properly, it may go on to the neighboring teeth, thus causing the recurrence of the problem. This happens because the bacteria are attacking the affected tooth and the gum. The main thing you need to do is to avoid sweets to cut off the bacteria that are contributing to the problem. In particular, ibuprofen, an over-the-counter medicine, and sometimes a prescription, are all good options.

Drinking mouthwash by accident brings conce­rn. Chlorhexidine is strong; it may cause stomach pain, nause­a, and dizziness. These e­ffects could go away alone. Drink lots of water to dilute­ mouthwash. But if unwell or your issues continue, se­ek medical care.

In my opinion the advice given by your doctor isn't wrong and opinion from multiple doctors can lead to confusion or chaos, but if you see deterioration in your state then you can reach out again.

IF YOU SUSPECT METAL SHARDS 1. Rinse with salt water.. . 3. Do not use tweezers, see a dentist..... 4. X-rays may be necessary.... 5. ANTIBIOTICS MAY BE PRESCRIBED .... 6. Surgery may be required in severe cases. 

A broken frenulum occurs when the gentle piece of fabric fastening your tongue or in another part of your body gets pulled or torn apart. You may experience pain or irritation, primarily when moving or moving your tongue or doing activities that affect that area. Occasionally, it may bleed slightly. Don't irritate it further to help it heal and clear it with salty water.

A variety of factors may result in missing teeth such as genetics or poor oral hygiene. The indicators include difficulty chewing or they are not confident to smile. You may still smile, but with a "duplicate tooth" which is a denture. They are braces that look like your natural teeth and that help you with meal time and grin freely. 

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.