Dental materials especially orthodontic elastics often get embedded in gingival tissues due to iatrogenic factors. If retained for a long time, inflammatory response starts as asymptomatic crestal bone loss and may progress to severe periodontal abscess. Unsupported orthodontic elastics used for diastema closure may result in exfoliation of teeth, while elastic separators may get embedded in in...

AIM To compare the rates of orthodontic space closure for: Active ligatures, polyurethane powerchain (Rocky Mountain Orthodontics, RMO Europe, Parc d'Innovation, Rue Geiler de Kaysersberg, 67400 Illkirch-Graffenstaden, Strasbourg, France) and nickel titanium springs. SAMPLE Patients entering the space closure phase of fixed orthodontic treatment attending six orthodontic providers. Twelve pat...

Traditional upper molar distalization techniques require patient co-operation with the headgear or elastics. Recently, several different intraoral procedures have been introduced to minimize the need for patient co-operation. This article reviews the appliances currently available for maxillary molar distalization and critically analyses their dentoalveolar and skeletal effects.

We propose an advanced patterned vertical alignment (PVA) mode with a fast response time through double ultraviolet (UV) exposure to UV curable reactive mesogen (RM) mixed in alignment layer. The double step UV exposures using a photomask divide an active pixel region into two regions with a modified pretilt region and a high elastics deformation energy one.

The aims of this study were to perform a systematic review of the use of rats as a model for experimental tooth movement, to give a critical evaluation of the use of elastics as a force delivery system, and to describe a newly designed well-defined model for tooth movement in rats. The literature from 1981 to 2002 indicates that in 57 per cent of animal studies on orthodontic tooth movement, ra...

We report a simple, effective method of managing displaced unilateral condylar fractures with occlusal disruption using vacuum-formed thermoplastic foil splints with bonded wire cleats. The cleats enable intermaxillary fixation in the form of orthodontic elastics to be used, which guide then maintain the occlusion in centric relation. A case is presented in which this technique was used success...

A case report by El-Bokle and Abbas (El-Bokle D, NH. novel method for the treatment of Class II malocclusion. Am J Orthod Dentofacial Orthop 2020;158:599-611) in October issue reported 2 cases malocclusion which patients were treated with inclined bite raisers beveled 45° combined short light intermaxillary elastics, showing improvement occlusal profile relationships both at end treatment. The ...

Objective: To evaluate and compare, in vitro, the decrease in the forces delivered in three groups of elastomeric chains, produced by the same manufacturer, according to the distance between links (short, medium, long). Methods: The segments of elastomeric chains were stretched and kept activated during the trial using a device developed especially for this purpose, which also allowed force rea...

We report the first atomistic calculation of the saddle-point configuration and activation energy for the nucleation of a 3D dislocation loop from a stressed crack tip in single crystal Cu. The transition state is found using reaction pathway sampling schemes, the nudged elastic band, and dimer methods. For the (111)[110] crack, loaded typically at 75% of the athermal critical strain energy rel...