Reproducibility of the assessment of the Fränkel manoeuvre for the evaluation of sagittal skeletal discrepancies in Class II individuals.

Objectives: The Fränkel manoeuvre is a procedure by which the mandible of Class II individuals is postured forward in dental Class I relationship. The evaluation of the resulting facial profile provides information concerning the components determining the sagittal discrepancy. Data concerning the reproducibility of its assessment are not available.

Pain perception following first orthodontic archwire placement--thermoelastic vs superelastic alloys: a randomized controlled trial.

Objectives: Orthodontic thermoelastic archwires produce lighter and more biologic forces than superelastic archwires and could therefore offer the possibility of reducing initial orthodontic pain. Nevertheless, evidence concerning this issue is scarce. The aim of this study was to compare pain perception following first archwire placement in patients with thermal heat-activated (HANT) and superelastic (SE) nickel-titanium archwires.

Web-based randomised controlled trials in orthodontics.

Randomised controlled trials (RCT) are considered the best source of scientific evidence--the gold standard--when evaluating the efficacy of orthodontic treatments. Frequently, RCT are planned as multicentre trials, with the intention of increasing statistical power and raising the precision of outcome estimates. The management of large-scale RCT, however, requires even more thorough organisation than conventional RCT.

Relationship between molar dentoalveolar and craniofacial heights in children.

Objectives: The relationship between posterior dentoalveolar heights and craniofacial vertical pattern has been matter of debate. Increased posterior dentoalveolar heights have been reported to be present in long face subjects, while in few studies the amount of molar dentoalveolar heights was negatively influenced by the divergence of the jaws. This, in turn, was interpreted as a dentoalveolar compensatory mechanism by which the teeth and the alveolar process adapt to jaw relationship in order to maintain a functional occlusion.

The Relationship between molar dentoalveolar and craniofacial heights.

Excessive vertical growth of the posterior dentoalveolar region has been implicated in the etiology of the so-called long-face syndrome. In this study, we tested the hypothesis that molar dentoalveolar heights are positively related to vertical craniofacial features. Cephalometric measurements obtained from 82 adult subjects were entered as independent variables in a multiple regression model.