The aim of this study was to biomechanically characterize a mouse tooth movement model and to evaluate the effect of orthodontic stress on the proliferation of periodontal osteoblasts. The authors used an orthodontic coil spring appliance with a low force/deflection rate, which produced an average force of 10-12 g. This design provided a predictable tipping movement of the molar with the center...

requires expansion of the palate by a combination of orthopedic and orthodontic tooth movements. Initially, transverse forces will tip the buccal segments laterally.1 With proper appliance design, 3rd-order moments will induce bodily translation.2-5 If the force is strong enough, separation occurs at the maxillary suture. The amount of orthopedic vs. orthodontic change depends greatly on the pa...

The oral-facial region is usually an area of significant concern for the individual, because it draws the most attention from other people in interpersonal interactions and is the primary source of vocal, physical, and emotional communication. As a result, patients who seek orthodontic treatment are concerned with improving their appearance and social acceptance, often more than they are with i...

The aim of this study was to determine whether a force applied in an antero-posterior direction would adequately reduce incisor eruption. This is needed to achieve a constant direction of force which is one of the demands for a good model for studying orthodontic tooth movement. Twenty male Wistar rats aged 11-12 weeks were divided into two equal groups: in the appliance group, a superelastic c...

The following is a clinical case report of a patient whose chief complaint was the presence of generalized spacing in the maxillary anterior segment following orthodontic treatment. After meticulous clinical analyses and discussions of the clinical procedures to be adopted, dental bleaching was performed in both arches with 10% hydrogen peroxide (Opalescence Trèswhite Supreme 10% Hydrogen Perox...

This study describes the course of interdisciplinary treatment for mandibular prognathism in an adult patient with a severe Class III malocclusion and a reverse overjet of 9 mm that involved an orthodontic and surgical orthognathic treatment. The orthodontic treatment involved attaching a fixed appliance to the upper and lower dental arches to prepare the patient for the mandibular surgery. Fol...

Maxillary central incisors impaction is a challenging problem in orthodontics, which has a major effect on dental and facial esthetics. Scientific literature agree on the importance of early diagnosis and appropriate intervention. This is a case report of a 10 year-old boy who presented with impaction of maxillary central incisor related to previous trauma to primary dentition and apparent spac...

The aims of this study were to investigate the intensity, location and duration of patients' discomfort following insertion of orthodontic appliances, and to examine for interactions between patient age, gender, appliance type and the perception of pain. After insertion of orthodontic appliances, 170 patients received eight questionnaires, one they completed and returned after 4 h, then one dai...

The aim of the study was to determine the prevalence of white-spot lesions (WSLs) in patients with fixed orthodontic appliances. The cross-sectional study sample consisted of three groups of patients: group I, 59 patients treated orthodontically for 6 months; group II, 64 patients treated for 12 months; group 0 (control), 68 patients examined immediately before appliance placement. All groups w...