Soft, hard-tissues and pharyngeal airway volume changes following maxillomandibular transverse osteodistraction: Computed tomography and three-dimensional laser scanner evaluation.

Introduction: Maxillomandibular transverse osteodistraction (MMTOD) is an alternative approach to the traditional treatment for transverse maxillary and mandibular deficiencies and crowding. The aim was to report soft and hard-tissues changes and airway volume variation.

Methods: In this study, skeletally mature, non-syndromic patients with transverse maxillary and mandibular hypoplasia, who underwent a MMTOD between 2010 and 2012, were included.

Conservative treatment of unilateral displaced condylar fractures in children with mixed dentition.

Purpose: The aim of the study was to present the outcomes of the conservative treatment of unilateral displaced condylar fractures in a series of children with mixed dentition.

Methods: The treatment protocol of our study population included the placement of fixed orthodontic appliances, the preparation of a maxillary acrylic splint, and functional exercises. Six and 12 months after trauma, patients underwent clinical temporomandibular joint dysfunction and mandibular motion assessments and a panoramic radiography.

Soft tissue changes after orthodontic surgical correction of jaws asymmetry evaluated by three-dimensional surface laser scanner.

Aesthetic improvement is an essential goal of treatment of facial asymmetry, and it is often difficult to achieve. Reliable three-dimensional measurements are required to support outcome studies. In this study, 15 white adult subjects, 9 females and 6 males, with maxillomandibular asymmetry and malocclusion were studied.

[Equilibrium and orthognathodontic surgery: correlations in a group of patients undergoing treatment].

Background: The aim of this study was to evaluate the main parameters provided by the static stabilometric test (mean X, mean Y, mean velocity, length of tracing, standard deviation of velocity, ellipse area) in the follow-up of patients suffering from skeletal occlusive pathology undergoing orthognathodontic surgery to confirm the re-establishment of postural equilibrium.

Methods: Fifteen patients with skeletal dysgnathia were correlated with a group of 10 healthy subjects. The same parameters were analysed in the dysgnathic subjects at 6 and 12 months after surgical correction.

[Evaluation of tegumental changes after skeletal repositioning in orthodontic surgery].

One of the main problems of orthognathodontic surgery is to evaluate the effects on soft tissue of bone positioning performed following surgical programming. A method which is of particular interest, easy to perform and reproduce was proposed by Jensen in 1992. It evaluates the correspondence of soft tissues on the basis of surgical programming and allows percentage values of soft tissue movement to be calculated in relation to bone tissue, thus performing a surgical VTO which corresponds as closely as possible to the postoperative result.

[The orthosurgical correction of 2 cases of Angle class II div I].

An orthosurgical technique comprising maxillary expansion using Burstone screws associated with multiple corticotomy, repositioning of the bone basis and pre- and postoperative orthodontics was used to correct two cases of Angle's class dysgnathia with involvement of both the bone basis and alveolodental component. The outcome was satisfactory in that a good esthetic result was achieved together with normal and functional occlusion which was stable over time.

[Postural changes of the tongue and hyoid bone following orthognathodontic surgical interventions].

The study was carried out on 28 dysgnathic patients submitted to surgical correction of malocclusion with the use of latero-lateral X-rays pre- and postoperatively. Cephalometry included a tongue and hyoid bone profiles and changes were assessed and quantified. It was interesting to note that aspecific evaluation of progenia patients confirmed the raising of the tongue and the lowering of the hyoid bone.

[A comparative evaluation of Steiner's and McNamara's methods for determining the position of the bone bases].

A comparative study of Steiner's and McNamara's cephalometric analyses to determine the position of bone bases was performed in 51 patients and revealed the substantial similarity of the two techniques. The authors consider McNamara's technique to be of greater and more immediate clinical value.

[Bidimensional measurements of the dental arches using a digitizer].

This method is based on the photographic reproduction of plaster models of dental arches, having previously identified reference points at a canine, molar and inter-incisor level. Subsequent measurement, using a digitizer, of the distances between the above points allows a precise bidimensional measurement to be easily obtained. By selecting plaster models for the different stages of treatment, the method can also be used to monitor changes in the dimensions of the alveolodental arch induced by therapy, or the possible presence of long-term recidivation.