On Friday, Tyson New Meats Inc. Recalled a lot more than 40,000 pounds of ground beef shipped to Wal-Mart stores in 12 states after samples tested at a Sherman, Texas, plant showed symptoms of E. Coli contamination. No illnesses have been reported. Springdale-centered Tyson Foods Inc. Said the recall had not been related to contaminated ground beef distributed by California-based United Food Group LLC. The recalled products were sent to Wal-Mart stores in Alabama, Arkansas, Colorado, Kansas, Kentucky, Louisiana, Mississippi, Missouri, New Mexico, Oklahoma, Texas and Tennessee, Tyson said.* Cavities: Microscopic holes in your tooth caused by bacteria have to be professionally treated which can usually be done in a painless process using dental fillings. Cavities usually do not go away on their own! They can lead to tooth loss if left without treatment eventually. Let's take a look at another three common oral problems. Common Dental Problem # 3# 3: Stained Teeth A diet rich in foods and beverages which contain dark pigments, dyes and tannins can keep your smile searching dulled and discolored after many years of repeated exposure. Smoking, chewing tobacco and even certain medications can also darken your teeth enamel. The good thing is that there are many techniques one can take to improving the looks of your smile, but avoidance is the most important.