Prognathism

Prognathism (prognathia) is the most common jaw anomaly.

Characteristics

• maxillary protraction (arching of the maxilla forward).

Division

1. Physiological:
   • the mandible also follows the position;
   • intact bite;
   • prognathic expression in the face, e.g. in Africans.
2. Pathological (prognathia maxillaris):
   • only the upper jaw has changes;
   • the lower jaw is of normal shape and size;
   • its oblique position is followed by the teeth, that protrude from the mouth;
   • the upper front teeth do not touch their antagonists;
   • lower teeth cause decubitus ulcers on the palate;
   • the upper lip is shortened - it is not enough to cover the protruding teeth.

• Alveolar prognathia: arching of the alveolus in the area of ​​the canines.
• Dental prognathia: the upper front teeth are turned out of the mouth.

Links

References

• KOMÍNEK, Jaroslav. Dětská stomatologie: učebnice pro lékařské fakulty. 1. edition. 1966.