Enamel is the thin outer covering of the tooth. This tough shell is the hardest tissue in the human body. Enamel covers the crown which is the part of the tooth that’s visible outside of the gums.
Because enamel is translucent, you can see light through it. But the main portion of the tooth, the dentin, is the part that’s responsible for your tooth color — whether white, off white, grey, or yellowish.
Sometimes coffee, tea, cola, red wine, fruit juices, and cigarettes stain the enamel on your teeth. Regular visits to your dentist for routine cleaning and polishing can help remove most surface stains and make sure your teeth stay healthy.
What does tooth enamel do?
Enamel helps protect your teeth from daily use such as chewing, biting, crunching, and grinding. Although enamel is a hard protector of teeth, it can chip and crack. Enamel also insulates the teeth from potentially painful temperatures and chemicals.
Unlike a broken bone that can be repaired by the body, once a tooth chips or breaks, the damage is done forever. Because enamel has no living cells, the body cannot repair chipped or cracked enamel.
What causes enamel erosion?
Tooth erosion happens when acids wear away the enamel on teeth. Enamel erosion can be caused by the following:
- Excessive soft drink consumption (high levels of phosphoric and citric acids)
- Fruit drinks (some acids in fruit drinks are more erosive than battery acid)
- Dry mouth or low salivary flow (xerostomia)
- Diet (high in sugar and starches)
- Acid reflux disease (GERD)
- Gastrointestinal problems
- Medications (aspirin, antihistamines)
- Genetics (inherited conditions)
- Environmental factors (friction, wear and tear, stress, and corrosion)
What are the signs of enamel erosion?
The signs of enamel erosion can vary, depending on the stage. Some signs may include:
- Sensitivity. Certain foods (sweets) and temperatures of foods (hot or cold) may cause a twinge of pain in the early stage of enamel erosion.
- Discoloration. As the enamel erodes and more dentin is exposed, the teeth may appear yellow.
- Cracks and chips. The edges of teeth become more rough, irregular, and jagged as enamel erodes.
- Severe, painful sensitivity. In later stages of enamel erosion, teeth become extremely sensitive to temperatures and sweets. You may feel a painful jolt that takes your breath away.
- Cupping. Indentations appear on the surface of the teeth.
When enamel erodes, the tooth is more susceptible to cavities or tooth decay. When the tooth decay enters the hard enamel, it has entry to the main body of the tooth.
Small cavities may cause no problems at first. But as cavities grow and penetrate the tooth, they can affect the tiny nerve fibers, resulting in an extremely painful abscess or infection.
How do you prevent enamel loss?
To prevent enamel loss and keep teeth healthy, be sure to brush and floss teeth daily. See your dentist every six months for regular checkups and cleaning. You can also try the following:
- Eliminate highly acidic foods and drinks from your diet such as carbonated sodas, lemons, and other citrus fruits and juices. Rinse your mouth immediately with clear water after eating acidic foods or drinking acidic drinks.
- Use a straw when you drink acidic drinks. The straw pushes the liquid to the back of your mouth, avoiding your teeth.
- Monitor snacks. Snacking throughout the day increases the chance of tooth decay. The mouth is acidic for a few hours after eating foods high in sugar and starches. Avoid snacking unless you’re able to rinse your mouth and brush teeth.
- Chew sugar-free gum between meals. Chewing gum boosts saliva production up to 10 times the normal flow. Saliva helps strengthen teeth with important minerals. Be sure to select sugar-free gum with xylitol, which is shown to reduce acids in beverages and foods.
- Drink more water throughout the day if you have low saliva volume or dry mouth.
- Use fluoride toothpaste. Fluoride strengthens teeth, so make sure fluoride is listed as an ingredient in your toothpaste.
- Talk to your dentist about daily fluoride mouthwash if you have a history of cavities. In addition, ask your dentist if sealants may be helpful in preventing enamel erosion and tooth decay.
How is tooth enamel loss treated?
Treatment of tooth enamel loss depends on the problem. Sometimes tooth bonding is used to protect the tooth and increase cosmetic appearance.
If the enamel loss is significant, the dentist may recommend covering the tooth with a crown. The crown may protect the tooth from further decay.