People with alcohol abuse problems have a higher chance of severe gum disease, dental decay and potential cancerous lesions. Their oral hygiene also tends to be poor.
Wearing of the teeth is also a big problem, partly due to the alcohol, and partly due to vomiting that often accompanies binge drinking. The acid produced wears away the enamel of the teeth, and leads to sensitivity. If tooth wear is severe a decrease in the height of the lower part of the face can be the result.
If a person also smokes, they are much more likely to develop cancer of the mouth. The effect of alcohol and smoking combined is more than that caused by just smoking. Not only that, but alcohol abuse also can cause other serious conditions like liver disease and disease of the heart and blood vessels.