These are very frequent disorders. Most of the times its origin is hereditary (parents transmit it to children). It is also considered as a bad relation between the jawbones that affects their function and the aesthetics.

Malocclusion causes:

The most frequent causes of the dental alterations or malformations are:

- Hereditary pattern.
- Bad habits.
- Congenital anomalies.
- Traumas.
- Hormonal alterations.
- Nutritional deficiencies.

Malocclusion Type I

It shows a normal relation of the first molar teeth. It is known as Neutroclusion.

Patients show a straight profile when clinically examined.

Malocclusion Type II

This shows an altered relation of the first molar teeth. It is considered a Distoclusion. Clinically the first lower molar tooth is behind (when compared with the upper one). The upper jawbone is protruded (moved forward).

Clinically, patients show a convex profile.

Malocclusión Type III

This shows an altered relation of the first molar teeth, known as Distoclusion. It is possible to clinically observe that the first lower molar tooth is "moved forward" with regard to the upper one. The lower jawbone is moved forward.

Patients show a concave profile.