Introduction: Surgical assist during immediate palatine expansion is enumerated among several procedures utilised in treating maxillary narrowing. There are various types of this procedure, including anchoring to teeth, to the bone, with partial or complete osteotomy. Surgical procedures based on anchoring the devices to the bone are used in patients after growth spurt in order to achieve correction of maxillary narrowing, crossbite, crowded anterior teeth and large side corridors in adult patients. Stabilisation of tooth born devices for expanding the palatine suture may lead to early or late complications, hence palatal distraction with LF1 maxillary osteotomy was utilised, by means of bone borne distractor, in order to avoid problems associated with the use of tooth borne devices.

Aim of the thesis: Presentation of early treatment results, based on the example of patients, with discussion concerning surgical technique, next to initial evaluation regarding functioning of the device.

Method: 20 patients treated with Distractor device, preliminary analysis of maxillary dental casts models, X-rays and photos illustrating faces of the patients.

Results: Initial evaluation concerning efficiency of the procedure, distraction time, complications and patient satisfaction.

Conflict of interest: None declared.