Tooth Sensitivity: Causes & Solutions

The thickness of the enamel surface layer in humans ranges from 0.01 mm at the cervical margin to 2 mm on the chewing surfaces of teeth. There is no such independent concept as “thin enamel” or “fragile enamel.” These terms are often used by patients and even doctors, but they usually refer to increased tooth wear and/or sensitivity.

Causes of increased tooth wear and sensitivity

In most cases, increased enamel wear is caused by improper occlusion (bite). Malocclusion, old/worn/poorly placed fillings, or missing teeth all disrupt occlusion. The result may be gum recession, wedge-shaped defects, multiple bone loss — and increased sensitivity.

Another factor contributing to enamel wear is improper brushing. Many people apply excessive force, use brushes with hard bristles, or abrasive toothpaste. All of this mechanically destroys enamel.

General health also plays a role. For example, gastrointestinal disorders can alter the pH of saliva, affecting enamel, and reduce the absorption of vitamins and minerals, leading to their deficiency in the body and teeth.

Diet matters as well. Excessive consumption of sodas, juices, fruits, and sweets disrupts the acid–base balance in the mouth. Frequent snacking and drinking also harm enamel, since saliva simply doesn’t have enough time to wash away residues.

Stress affects all aspects of health. In the dental system, it can lead to bruxism (clenching and grinding) or clenching without grinding. This may occur both day and night. Will enamel suffer? Absolutely.

But the most harmful factor is still improper occlusion, which creates constant overload. Besides chewing surfaces, the most vulnerable area is the cervical zone near the gums, where enamel is the thinnest (≈ 0.2 mm). Chips, cracks, and defects often appear there.

Are toothpastes for sensitivity useful?

Yes. These toothpastes help reduce discomfort and improve quality of life. They don’t treat the problem but form a protective film on teeth.

Are remineralizing pastes and gels useful?

Yes. These products temporarily strengthen enamel and saturate it with minerals. Many brands offer such solutions.

Can you whiten teeth with enamel wear/sensitivity/wedge-shaped defects?

It is not contraindicated. Whitening does not destroy enamel (details in this article). However, it may increase sensitivity further.

The best prevention of enamel wear is restoring proper occlusion and worn surfaces with orthodontics and/or prosthetics. In many cases, this means full-mouth rehabilitation.

So, can veneers be placed only on the front teeth? Yes, but only if you don’t have occlusion or wear issues. If wear already exists, it will progress over time, and gum recession risks will increase. The answer always depends on dental condition. The formula is: “everything according to indications.”

But what if full-mouth rehabilitation is simply too expensive? As a temporary measure, if worn areas cause severe discomfort, they can be covered with composite material. Will such restorations last long? No guarantees, especially in heavily loaded areas. But in some situations, it is better than nothing.