Root trauma and tooth loss through the application of pre-drilled transgingival fixation screws.

Unlabelled: Transgingival fixation screws are used for intermaxillary fixation in different situations. The aim of this study was to evaluate the risk of root trauma and tooth loss using pre-drilled transgingival fixation screws.

Material And Methods: 521 patients with mean age 26.

Changes after surgically-assisted maxillary expansion (SARME) to the dentoalveolar, palatal and nasal structures by using tooth-borne distraction devices.

Different devices are available to aid surgically-assisted maxillary expansion. In this study we have evaluated the changes to the anchoring teeth, the hard palate, and the lower nasal passage made by tooth-borne distraction devices. Thirty-one patients (mean (SD) age 28 (2) years) with deficiencies in the transverse width of the maxilla were examined by computed tomography and cone beam scans before and after operation.

[Surgically assisted rapid maxillary expansion. Effects on the nasal airways and nasal septum].

Background: Surgically assisted rapid maxillary expansion (SARME) is a standardized method to treat cross bites in maxillofacial surgery. Changes to the nasal airways are assumed due to the anatomic dependence between the palate and the nasal floor.

Patients And Methods: In this study 19 patients with a transverse deficit of the upper jaw underwent SARME.