Skeletal Class II and III

Some times the jaw has not grown enough and is in a retruded position (Class II). In some cases it may be associated to​ obstructive​ sleep apnea and it can be corrected by an advancement of the maxilla and mandible to increase ​the ​airway.

The opposite (Class III or prognathism) may be due to excessive growth of the mandible, to a deficit in the maxillary growth or a combination of both. In this case the jaw is in a more forward position. This malocclusion may cause a temporomandibular joint disorder.





Long face

If the jaws grow too much in the vertical plane, an imbalance occurs in the lower third facial compared to the rest of the face.

Short face

When growth is insufficient translates into a squarer face and teeth are usually not seen.

Gummy smile

A vertical maxillary excess produces an excessive gum exposure that increases when they smile. We can treat it by performing surgery to reduce the vertical maxillary excess and enhance your smile.

Open bite

It occurs when the teeth do not contact. It is more common in the incisors and may be related to a lingual habit. It can be corrected by surgery in which we segment the maxilla to occlude properly with the jaw.



When the palate is narrow it causes a malocclusion between the teeth of the maxilla and the mandible and also becomes apparent when the patient smiles. By SARPE (​S​urgically ​A​ssisted ​R​apid ​P​alatal ​E​xpansion) we can normalize the bite in cases where the discrepancy can not be corrected only with orthodontic treatment.


Facial asymmetry

If one side of the jaw has grown more than the other a deviation occurs in the chin and teeth do not occlude properly. Orthognathic surgery not only improves occlusion, but also achieves facial symmetry.



The profile and symmetry of the face can be altered by a prominent, deficient or deviated chin. Through a mentoplasty we can narrow the chin of a woman with a prominent chin or improve the profile of a patient with a retruded mandible.



Surgery First

In some patients orthognathic surgery can be performed first and posteriorly is done the orthodontic treatment. This new protocol reduces the total treatment time and gets a much faster functional and aesthetic result.

Maxillomandibular Advancement




Maxillary Advancement


Bimaxillary Surgery



GNATION Centro de Cirugía Maxilofacial

Casanova 101, pral. 1ª

08011 - Barcelona

Tel. +34 93 453 79 65 Fax +34 93 451 44 80





Passeig de Sant Joan de Déu, 2, 08950 Esplugues de Llobregat, Barcelona, España

Tel. 93 600 97 83  Fax. 93 600 97 84