[Class II interceptive therapy in the mixed dentition: intra-oral distalization appliances]. / Traitements interceptifs de la classe II en denture mixte: thérapeutiques intra-orales de distalisation.

Treatment of Class II malocclusion during the mixed dentition may sometimes require upper molar distalization. To achieve this, many devices have been suggested. The purpose of this article is to classify them and to point out their effects on the dentition and upon skeletal structures.

[Not Available]. / Traitement précoce des classes II en thérapeutique «Distal Active Concept¼. Stabilité à 30 mois de la croissance squelettique et de la longueur d'arcade.

This cephalometric study evaluates the stability of skeletal and dento-alveolar changes after 6 to 9 months of early orthodontic treatment of Class II malocclusions with the Distal Active Concept (DAC). An analysis of the results showed significant skeletal changes, notably an average of 8.5 mm of mandibular growth, which remained stable after the close of treatment. However, the correction of the maxillary incisal protrusion relapsed slightly. The treatment-provoked lower incisal labial inclination proved to be temporary, with the lower anterior teeth returning to their initial position at the close of the 30-month post-treatment observation period.

[Individualized clinical evaluation of tooth movement. Treatment of Class II: molar splints and structural effects]. / Evaluation clinique individualisée du déplacement dentaire. Traitement des classes II: cales postérieures et incidences structurales.

The presentation of a synoptic chart allowing a dental arch analysis and Class II correction strategy is presented and followed by a study on 30 patients in mixed dentition and 37 growing patients in permanent dentition. These patients presenting a Class II malocclusion have been treated by Class II mechanics and lower molar individualised splint enhancing the vertical lower face height and skeletal Class II correction. This study shows a good vertical stabilization of the facial planes during the treatment, a significant growth of the lower face but it is noticed a posterior rotation of the occlusal plane in the mixed dentition sample.