Teeth usually turn gray as a result of trauma or exposure to the antibiotic tetracycline before the age of six, according to Rocky Mountain Endodontics. In the case of trauma, the gray appearance is due to the tooth bein... More »

Yellow-tinted shampoo and conditioner, chlorine, chemicals in water, and excess sunlight exposure can cause gray hair to turn yellow, according to Oprah. Gray hair has very little pigment and easily picks up the pigment ... More »

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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 o... More »

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Adults have 32 teeth, unless they have lost some due to disease or trauma. Children only have 20 teeth. Adult teeth consist of four canines, eight incisors, eight premolars and 12 molars, which include four wisdom teeth. More »

A person's front bottom teeth can hurt for a variety of reasons, including gum inflammation, a cavity, tooth decay, a cracked tooth, nerve root exposure or pulp inflammation. The treatment for a toothache of the bottom f... More »

Gum disease refers to inflammation of the soft tissues that surround the teeth as a result of the accumulation of plaque on the gum line. The plague forms from a mix of saliva, food particles and bacteria. The other name... More »

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Teeth chip more easily when the enamel intended to protect them erodes or wears, according to WebMD. Enamel is what protects a tooth from the abrasive actions of chewing, crunching and grinding. More »