ABSTRACT
Abstract Objective: To approbate the complex approach for assessment of second molar mesialization outcomes with the use of orthodontic mini-implants. Material and Methods: The sample consisted of 62 patients, divided into study (n=32) and control group (n=30). Mesialization procedure in the study group was conducted with the use of braces system and orthodontic mini-implants as additional anchorage devices, while in control group mesialization was provided only with the use of the brace system. Dynamic registration of bone level changes and the entire range of tooth movement were carried out on digital orthopantomograms obtained with the use of Planmeca ProMax 2D. Results: Findings of orthopantomographic (OPG) analysis have shown that cases of second molar mesialization with the use of mini-implants as temporary anchorage characterized with more stable conditions of bone levels around displaced teeth compare to cases, where mesialization was provided only with the use of braces systems without any additional anchorage. The terms of treatment in the study group with the use of dental mini-implants as the anchorage was reduced by 8.8 ± 0.12 months compared to the control group (p<0.05). Conclusion: The use of orthodontic mini-implants as anchorage constructions during the mesialization of the mandibular second molars contributes to the reduction of treatment duration and support the more prognostic movement of teeth, that does not provoke significant pathological changes in the levels of the surrounded alveolar ridge and minimize the risk of associated periodontal complication occurrence.
Subject(s)
Humans , Male , Female , Adolescent , Tooth Movement Techniques/methods , Radiography, Dental, Digital/instrumentation , Molar , Orthodontics, Corrective , Ukraine , Regression AnalysisABSTRACT
La mesialización de segundos molares al espacio residual del primer molar extraído, parece una tarea muy inteligente, pero muchas veces, nada sencilla de realizar, especialmente cuando la extracción del primer molar es de larga data y las corticales óseas se encuentran fusionadas, dejando muy poco hueso esponjoso para remodelar, enlenteciendo, y muchas veces, impidiendo el movimiento ortodóncico. El propósito de este artículo consiste en definir y mostrar un caso donde se llevó a cabo la técnica de flexicorticotomía alveolar para lograr la mesialización de un segundo molar inferior, al espacio edéntulo del primero en una paciente femenina de 42 años. Discusión: se realizó el cierre ortodóncico del espacio edéntulo al mesializar el segundo molar permanente, se disminuyó el período de tratamiento, y se logró estabilidad oclusal del paciente
The mesial movement of the second molar to the first molar residual space removed, seems a task very smart, but often, not simple to do, especially when the first molar extraction is longstanding and cortical bone are fused, leaving little cancellous bone to remodel, slowing, and often preventing orthodontic movement. The purpose of this article is to define and show a case where conducted technique of flexicorticotomy for mesial movement of a lower second molar, to the first edentulous space of a female patient of 42 years. Discussion: orthodontic closure was achieved edentulous space to mesialize the second permanent molar, decreased the period of treatment, and the occlusal stability of the patient
Subject(s)
Humans , Adult , Animals , Female , Bone Remodeling , Orthodontic Space Closure/instrumentation , Orthodontic Space Closure , Molar , Mesial Movement of Teeth/surgery , Orthodontics/instrumentation , Orthodontics/trends , DentistryABSTRACT
Las alternativas de tratamiento de las maloclusiones de clase II esqueléticas y dentales incluyen las extracciones de dientes permanentes y la distalización de los molares maxilares con aparatos extraorales e intraorales. Estos últimos, no necesitan la cooperación del paciente, además, en ellos se han hecho variaciones importantes en su mecánica y diseño a lo largo de los años. Con el uso de los minitornillos se ha podido eliminar, en gran parte, los efectos de reacción como la vestibularización de los incisivos y la mesialización de los premolares. Este artículo sintetiza una revisión de la literatura de los últimos 20 años de los diferentes diseños y sistemas mecánicos que se han usado con éxito en la distalización de los molares maxilares.
The alternatives of treatment of class II skeletal and dental maloclussions included the extractions of permanent teeth and the maxillary molars distalization by extraoral devices and intraoral devices. The above mentioned, does not need cooperation of the patient. In addition, important variations have been mechanics and design throughout the years. With the miniscrews one could have eliminated, largely, the effects of reaction as the vestibularization of the incisor teeth and the mesialization of the bicuspid. This article is a synthesis of a review of the literature of last 20 years of the different designs and mechanical systems that have been used successfully in the distalization of the maxillary molars.