The dental cracks is considered as a structural loss of the tooth that is not due to any bacteria, but is due to a very frequent trauma on the teeth and caused by an excess of the force of the bite on them. There is, therefore, a loss of hard dental tissues.
Dental cracks has a series of consequences:
- The thickness of the enamel is lost in the area of the neck of the tooth. The fragile and brittle enamel prisms break due to the deformation produced by the force of the bite.
- The enamel is subjected to constant flexion by occlusal movements. In the neck of the tooth the flexural deformation takes place, in normal periodontal conditions, since the tooth and the alveolar bone have a similar modulus of elasticity. Like the crown, with its rigid enamel layer, it cannot be deformed. The deformation can only take place in the neck of the tooth. This causes the hard substance to break, facilitating greater permeability and making the chemical restructuring of the tooth easier.
- The exposed dentine is predisposed to abrasion by brushing and the action of cariogenic agents.
Treatment of dental cracks.
The early dental treatment of the cracks is performed by occlusal adjustment, to reduce flexion and compression. The treatment of dental cracks depends on their characteristics. In general, a restoration with resin is sufficient in most cases, however in cases of sensitivity, restoration can be recommended with another type of protective material, such as the glass monomer, or the combination of these two materials. These restorations tend to be quick, as there is no infected material as in the case of tooth decay, it is not necessary to wear the affected surface. In addition, discharge splints must be used to neutralize the mechanical stress factors that contribute to progress of these injuries.