After a dental procedure, a patient may notice the appearance of a mouth sore. There are numerous types of mouth sores found inside or outside the mouth. They have numerous causes which can be viewed by clicking on the "Find Out More" button. Cold sores tend to be a common complaint. They usually appear within a day or two after a dental procedure. Cold sores are facial lesions around the lips resulting from the herpes simplex-1 virus. This virus remains latent in the body and manifests itself due to various stimuli such as stress. Dental procedures require excessive movement of the lips and cheeks, as well as manipulation of the gums. This causes stress resulting in the formation of a coldsore. For more information, please click on the link provided.