Teeth turn yellow because of exposure to materials that cause extrinsic and intrinsic stains. Extrinsic stains occur on the surface of a tooth, while intrinsic stains occur inside the tooth. Most extrinsic stains occur on the enamel and are caused by foods in one's diet. Intrinsic stains, which change the light-transmitting properties of the enamel, are often caused by drugs and other medications.Know More
Foods and drinks that are dark are more likely to cause teeth to appear yellow. This means that fruits such as grapes, pomegranates and blueberries have a higher potential of staining teeth than do lighter fruits. Drinks such as coffee and cola have a similar effect. All these foods and drinks are high in chromogens, which produce pigments that often adhere to tooth enamel. Chewing tobacco and smoking also increase the likelihood of yellow teeth due to plaque that collects on the teeth when these products are used.
Some of the medications that cause intrinsic stains include tetracycline and doxycycline (if children are younger than 8) and minocycline, which is an acne-treating drug. In addition to extrinsic and intrinsic staining, aging also can cause teeth to yellow. Likewise, some people's teeth simply appear more yellow because of genetics.Learn More
Modern dentures are typically made out of plastic, often with a metal base, though this may be made out of plastic as well. The plastic of choice for dentures is polymethyl methacrylate acrylic, or PMMA. Historically, dentures have been made out of animal teeth, ivory, porcelain and vulcanite rubber.Full Answer >
Teeth should be brushed for about 2 minutes two or three times per day, according to WebMD. A WebMD expert suggests spending about 30 seconds in each quadrant of the mouth.Full Answer >
Undergoing a teeth whitening procedure in a dentist’s office can bring faster results than using at-home whitening kits, according to WebMD. Dentists typically use much stronger bleaching solutions than at-home kits.Full Answer >
Floss your teeth by winding 18 inches of floss around your middle fingers and carefully guiding it between your teeth using your thumbs and index fingers. Gripping the floss tightly, slide it back and forth between your teeth, and repeat until your gum line is clean.Full Answer >