Ortho- perio- prosthetic interdisciplinary approach of an adult class II division 2 with multiple premolar agenesis: A case report.

The aim of this case report is to illustrate the fixed orthodontic, surgical and periodontal implant management of a young adult with multiple agenesis associated with a class II division 2 malocclusion. The challenge here was the multidisciplinary synchronisation in order to achieve a coordinated treatment with the best possible aesthetic, prosthetic and functional prognosis. The patient suffered from a total of 10 agenesis including third molars and underwent implant replacement with bone grafting and periodontal planning of the 6 missing premolars.

Is the Quad Helix more efficient to correct mandibular asymmetry before age 7? A retrospective comparative study.

Introduction: Unilateral posterior crossbite (UPCB), often from dysfunctional and para-functional causes, leads to positional mandibular asymmetries that can develop at a very young age into skeletal mandibular deviation; hence the interest of early maxillary expansion. The purpose of this retrospective study was to compare the impact of maxillary expansion by Quad Helix (QH) on mandibular skeletal asymmetry correction before and after 7 years of age.

Materials And Methods: All children with UPCB and skeletal mandibular asymmetry, who were treated by QH in the orthodontic department of Montpellier between February 2017 and August 2018 and had a radiography file at baseline (T0) and 12 months later (T1) were retrospectively included.

Are Noffel's danger signs pathognomonic of class II division 2? A retrospective comparative study.

Introduction: The 3 Noffel signs, "Ramal height", "Smiling chin", and "B-line space", often present in class II division 2, are called "danger signs" for aesthetics, when they are strongly marked and absolutely need to be taken into account in the therapeutic strategy. The main objective was to assess whether the three measurements associated with Noffel signs (Gonion/Articulare distance, Cutaneous Pogonion/Na-B, and B-line space) were pathognomonic of class II division 2. The secondary objective was to determine whether there was a correlation between the severity of Noffel signs and the sagittal and/or vertical skeletal severity of class II division 2.