The hydrodynamic theory explains tooth sensitivity caused by exposure of dentin, which is prevented by enamel and cementum. Abrasion of teeth and exposure to acidic items can cause sensitivity, but it is usually fleeting and can be treated with certain products and procedures.
The hydrodynamic theory addresses the reasons why some people’s teeth become sensitive to stimuli such as heat and cold. This idea is based on what dental experts have observed during patient examinations. According to the researchers, the hydrodynamic theory emphasizes the importance of substances called enamel and cementum in preventing a tooth from becoming sensitive. It also highlights how exposure to a dental material called dentin leads to sensitivity, which is often fleeting and requires the use of certain products to address the problem.
Experts in the field of dentistry use hydrodynamic theory to point out that enamel and cementum prevent teeth from becoming overly sensitive. Dentin is the part of a tooth on which enamel or cementum is found. Enamel is the hardest dental material and covers the crown, the part of the tooth visible in the mouth. The cementum covers the root surface of the tooth, which is embedded in the bone. If the dentin is not covered by these materials and is exposed due to a dental defect, the patient experiences sensitivity.
Another aspect of this healthcare idea is that the tubules make up the dentin and thus have an effect on the sensitivity of the teeth that an individual feels. When someone causes abrasion of a tooth – the wear and tear of the tooth surface and surrounding gums by hard brushing – this can expose the dentinal tubules. If a dentist then uses an air-and-water syringe to clean the tooth surface, this forces fluid into the tubules. Meanwhile, eating an acidic item can push fluids out of the tubules. According to the hydrodynamic theory, the constant back and forth movement of the fluid within the dentinal tubules and the pressure change in the dentinal fluid cause tooth sensitivity.
Pain associated with tooth sensitivity is typically very sudden. The sensation a person experiences in their tooth, based on hydrodynamic theory, usually only occurs when a stimulus such as a puff of air is present. As soon as the cause of the sensitivity is removed, the pain tends to decrease.
Using products and procedures that target dental pain is a common way to deal with this particular type of oral problem. For example, companies produce toothpastes designed specifically for people with tooth sensitivity. Additionally, research has shown that laser therapy can be helpful in counteracting the uncomfortable tooth sensations evidenced by the hydrodynamic theory.
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