Craniofacial Cephalometric Characteristics and Open Bite Deformity in Individuals with Amelogenesis Imperfecta-A Systematic Review and Meta-Analysis.

Background: Individuals with amelogenesis imperfecta (AI) often present with malocclusions, especially a dental or skeletal anterior open bite (AOB).

Objectives: To evaluate the craniofacial characteristics in individuals with AI.

Material And Methods: A systematic literature search was conducted with the PubMed, Web of Science, Embase and Google Scholar databases to identify studies relating to the cephalometric characteristics of individuals with AI, without any language or publication date restrictions.

Development of a surgical guide for minimally invasive corticotomies with a complete digital intraoral and laboratory workflow.

Aim: Surgically facilitated orthodontic treatment is increasingly being used, especially for adults, to facilitate tooth movements and reduce the duration of orthodontic treatment. The present article reports on an innovative, safe, and minimally invasive technique to perform flapless corticotomies using a dedicated surgical guide produced with a complete digital intraoral and laboratory workflow.

Materials And Methods: A 51-year-old man presented with maxillary and mandibular anterior crowding.

[Diagnosis and management of ankylosed permanent maxillary incisors: proposal for a decision tree].

Introduction: Ankylosis of a maxillary incisor involves evolutive resorption for which clinical management is difficult for both general practitioners and orthodontists. This anomaly can give rise to potentially major aesthetic, functional and occlusal defects. The ankylosed tooth will be lost, in the short or long term, depending on the bone remodeling.

[Contribution of 3D imaging using 3DNEO(®) software in surgical-orthodontic treatment of impacted teeth].

Objectives: The aim of this investigation was to present and evaluate an original method of mini-invasive oral surgery and orthodontics based on 3D images from a computed tomography software (3DNEO(®), 3DNEOVISION).

Materials And Methods: Three patients with impacted teeth were examined and their data were analyzed with this software based on the "region growing" method.

Results: Several clinical interests emerge : locate and visualize precisely the relationships of the impacted tooth with the adjacent anatomical elements under the desired angle, associate/dissociate the different elements of the 3D scene, measure the distances, calculate the axes of traction, materialize the way of traction and the optimal point for bonding, prepare virtually the surgical exposure and orthodontic treatment plan.

Tonic and phasic descending dopaminergic controls of nociceptive transmission in the medullary dorsal horn.

The transfer of nociceptive information at the level of dorsal horn is subject to extensive processing by both local segmental and supraspinal mechanisms, including descending dopaminergic controls, originating from the hypothalamic A11 nucleus. The inhibitory role of dopamine on evoked pain via activation of D2-like receptors at the level of the dorsal horn is well established. Here, by use of behavioral, electrophysiological, and anatomical techniques, we examined within the trigeminal sensory complex, first, whether descending dopaminergic controls also modulate pain behavior after an inflammatory insult, and second, under which physiological conditions these descending dopaminergic controls are actually recruited.

[Can orthodontic treatment generate temporomandibular disorders and pain? A review].

While considered for years to play the primary role in the etiology of temporo-mandibular joint disturbances (TMD), occlusal discrepancies are now considered to be just one causative factor among many. Recent studies, literature reviews or meta-analyses, and longitudinal studies with follow-up of children treated for many years all conclude that there is no risk of orthodontic treatment giving rise to episodes of temporo-mandibular disorders. The signs of TMD appearing during the course of orthodontic treatment should be considered in the context of the epidemiology of the disorder, which is characterized by a strong increase in its occurrence during adolescence.