Your dentist may cover your tooth with a crown, or dental cap if you have had a cavity treated that is too large for a filling. By having the tooth completely covered with a crown, it will look like a normal tooth. More importantly, the tooth will continue to be fully functioning and you can avoid an extraction. While a dental crown is helpful in preserving your teeth and your smile, you may still run into problems. One of the most common issues that trouble patients is red gums around the tooth with a crown. If this happens to you, you need to understand the underlying cause of the redness so that the problem can be resolved. The last thing you want is a replacement crown. In some cases, your dentist may use materials that are not of the best quality, resulting in irritation. A crown that is not properly placed over the tooth may rub against your gums and cause bleeding or discomfort. When you have issues with your crown, your dentist can help you to find a solution. First, you need to find out why you are experiencing redness.