Effect of rapid maxillary expansion on nasomaxillary structure and sleep disordered breathing in children with obstructive sleep apnoea.

Objective: The aim of this study was to assess the effect of RME on upper airway structure and its relationship to improvements in sleep disordered breathing.

Methods: The study was carried out in 23 children with malocclusion and OSA. Clinical assessment visits, daytime sleepiness questionnaire, polysomnography and orthognatodontic examination were performed before (T0) and 4 (T1) and 12 (T2) months after RME.

Control of anterior anchorage with miniscrews and sliding mechanics in an adolescent with missing second premolars: A clinical report with biomechanical validation.

Congenital missing second premolars in growing patients should be accurately evaluated in order to establish a suitable treatment plan. Concerning the decision of whether to close or maintain spaces in the dental arches, it shall also be based on biomechanical aspects and the aesthetic traits of individual patients. Accordingly, the option of closing tooth spaces requires an adequate application of biomechanical principles aimed at avoiding detrimental effects on dental arches and facial profile.

Morphological observations and Fractological considerations on orthodontics miniscrews.

Aim: The purpose of this study was to evaluate morphological and biomechanical characteristics of a commercial mini-implant.

Methods: Orthodontic low head mini implants, in the two available sizes of 1.5 and 2 mm, have been used.

Head posture and lower arch dental crowding.

Objective: To test the null hypothesis that there is no relationship between the posture of the head and the neck and late lower arch crowding.

Materials And Methods: The sample comprised 55 subjects (23 female, 32 male), age 12-18 years, with complete permanent dentition and without previous orthodontic treatment. Space conditions were valued by Nance's space analysis on the study models.

[Space analysis and treatment planning in the mixed dentition].

The maintaining of the space during mixed dentition, allows the patient to obtain a good occlusion, the right growth and facial development. The orthodontist can preserve the space, using simple appliances like the lip bumper and the lingual arch.