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Resumen En la actualidad hay diferentes formas de abordar la maloclusión de clase III, todas las formas tienen como objetivo principal solucionar la maloclusión y están encaminadas a diagnosticar y llevar al paciente a una oclusión es table, estética y sobretodo sin daño alguno a los tejidos que conforman el sistema estomatognático. Se muestra en este artículo el manejo de la ma loclusión de clase III con arcos de Multiloop Edgewise Arch Wire (MEAW) como una opción rápida, estable y de excelentes resultados para la solu ción de este tipo de discrepancias. La maloclusión de clase III puede ser tra tada de diferentes formas como el tratamiento temprano, la compensación dental, el camuflaje esquelético y la opción quirúrgica. La compensación dental puede ser de diferentes formas, como por ejemplo: exodoncias de premolares inferiores, torque inferior negativo y positivo superior, con ayuda de anclaje esquelético (mini tornillos) y muchas más que no se enuncian. En los casos que se involucra el perfil o la simetría facial y su origen es de características de ADF (Anomalía Dentocranéo Maxilofacial) requirieran de cirugía ortognatica para su solución, puesto que es de origen esquelético y debido a severidad es no compensable. Este articulo muestra un manejo diferente como opción de compensación de maloclusión de clase III. Es un reporte de caso clínico de un paciente del Posgrado de Ortodoncia de la Universidad Antonio Nariño de la clínica de arco recto manejado con brac kets de prescripción MBT Gemini Unitek 3M slot 0.022"x0.025" los cua les se les coloca arcos de Multiloop Edgewise Arch Wire (MEAW) después de ocho meses de tratamiento, cuatro meses en alineación y nivelación y cuatro meses del uso arcos de Multiloop Edgewise Arch Wire (MEAW) la corrección dentoalveolar se corrige gracias a la retracción canina y molar de 6mm bilateral haciendo rotar el plano de oclusión según la filosofía del tratamiento de Multiloop Edgewise Arch Wire (MEAW) obteniendo las seis llaves de la oclusión de Andrews.
Abstract At present, there are different ways of approaching Class III malocclusion, all of which have the main objective of solving malocclusion and are aimed at diagnosing and bringing the patient to a stable, aesthetic occlusion and above all without any damage to the tissues that make up the Stomatognatic system. This paper deals with the handling of Class III malocclusion with Multiloop Edgewise Arch Wire (MEAW) as a fast, stable and excellent choice for solving this type of discrepancy. Class III malocclusion can be treated in different ways such as early treatment, den tal compensation, skeletal camouflage and surgical option. The dental compensation can be of different forms, as for example: extractions of lower premolars, negative inferior torque and superior positive, with the aid of skeletal anchorage (TAD) and many more that are not stated. In cases, involving facial profile or symmetry and its origin is the characteristics of ADF (Maxillofacial Dentocranial Anomaly) require orthognathic surgery for its solution, since it is of skeletal origin and due to severity is not compensable. This article shows a different management as an option for class III malocclusion compensation. It is a clinical case report of a patient of the Orthodontics Postgraduate of the Antonio Nariño University of the straight arch clinic handled with MBT Gemini Unitek 3M slot 0.022 "x0.025" brackets which are placed with Multiloop Edgewise Arch arcs Wire (MEAW) after eight months of treatment, four months in alignment and leveling, and four months of use Multiloop Edgewise Arch Wire (MEAW) correction is corrected by bilateral canine and molar retraction by rotating the plane Of occlusion according to the philosophy of the treatment of Mul tiloop Edgewise Arch Wire (MEAW) obtaining the six keys of the Andrews occlusion.
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Objective To evaluate the effects of multiloop edgewise arch wire(MEAW)technique combined with rapid maxillary expansion(RME)in correcting skeletal crossbite young adults with mandibular deviation.Methods 9 young adults with skeletal class Ⅲ malocclusion and mandibular deviation were selected(4 males,5 females,aged from 16.2-18.8 years).They were all corrected with RME and MEAW techniques.Cephalometric radiographs were taken and analyzed at the pretreatment(T1)and post-treatment(T2).Students't-test was used to determine if there were significant differences between the 2 time periods.Results SNA increased by(1.4+1.7)°,SNB decreased by(0.7+0.9)°,and ANB increased by(2.1+0.9)°;U1-SN increased by(2.7+3.7)°and L1-MP decreased by(5.4+2.9)°.MP-SN and Mp-FH increased by(1.9+2.0)°and(1.1+2.6)°respectively,neither of which had significant difference.Maz-Maz' increased by(2.6+2.8)mm,while Um-Um'increased by(6.2+5.9)mm.The latter had significant difference.△Cd-Me and △Cd-Go decreased by (3.7+2.1)mm and(2.8+1.6)mm respectively;while ManDP-MSL and Me-MSL decreased by (3.8+2.3)mmand(3.6+2.5)mm,respectively.All of them had significant differences.Conclusion MEAW technique combined with RME is a clinically effective method for correcting adults with mild and moderate skeletal crossbite and mandibular deviation.
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Objective To construct a finite element analytical model of multiloop edgewise arch wire(MEAW),and study its mechanical characteristics.Methods Three-dimensional(3D) model of dentition-bracket-arch wire was set up in an initial graphics exchange specification(IGES) format complex by Pro/E software.The multiloop edgewise arch wire was spliced on the lower dentition.After dividing the arch wire and brackets with quarter-tetrahedron element method,the model was analyzed by ANSYS(an engineering simulation software).Results The finite element analytical model of multiloop edgewise arch wire was successfully built up.Based on the model,when multiloop edgewise arch wire was subjected to a heavy strength in certain parts(such as tooth 3,4),the anti-force strength on the other brackets(such as tooth 1,2,5,6,7) was not so heavy.The subjected strength was light and soft,especially on the first molar.Conclusion The results suggest that the finite element analytical model of multiloop edgewise arch wire built up in the experiment may be used to study the integrated mechanical characteristics,reveal the orthodontic specialty,and discuss the orthodontic mechanisms of multiloop edgewise arch wire techniques.
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Objective:To compare the regional load deflection rate(LDR) of multiloop edgewise arch wire(MEAW) in the individual interbracket span,to understand the mechanical properties of MEAW.Methods:The stainless steel wire of 0.41 mm?0.64 mm was bent with single L-loop of 5 different sizes as described by Kim.The LDR of each L-loop at the individual interbracket span when loading and unloading was measured by using the Instron at a crosshead speed of 1 mm/min and maximum deflection of 1.0 mm at room temperature.Five specimens were tested under each experimental condition to eliminate the possibility of changes in the physical properties of the wires as a result of the stress from repeated measurements.The date were analysed by SPSS 11.0.Results:L-loops of MEAW had different LDRs regionally,except the regional LDRs between the canine and the first premolar and that between the first and second premolar were identical and moderate,a high value for the anterior segments and a low value for the posterior segments,the difference was statistically significant(P