Introduction: all orthodontic treatments must be safe in terms of temporomandibular joint health. No reports in the recent literature evaluate the association between the use of posterior bite turbos and condylar position changes. The aim of the present study was to evaluate condylar position changes occurring after three-month treatment with posterior bite turbo in patients from the Dental School of the Universidad del Valle. Methods: a sample of 15 hyperdivergent patients was randomly distributed into two groups: Bite Turbo and Control Group. Cone-Beam Computed Tomography (CB-CT) was used to assess the condyle position before the bite turbos bonding to first and second molars, and after three months of use of the appliances. Distances were taken from the CB-CT by a single operator, and the calibration was tested with intraclass correlation (> 0.9). Results: no statistical difference between the position of left and right condyles was detected. However, there was a significant difference in the upper space of the left condyle between the initial and final measurement. Patients reported satisfactory use of the occlusal bite turbo (85.8%) in three months of treatment. Conclusion: contrary to the expected, the simultaneous use of posterior occlusal appliances with balanced mandibular movements for 3 months did not cause significant changes in condylar position. The patients tolerate well the use of occlusal stops.
<p><strong>ABSTRACT. </strong><em><strong>Background:</strong></em><strong><em> </em></strong>is necessary to consider which parameter should stablish the central incisor inclination. <em><strong>Purpose:</strong></em> The main objective of the present study was to appraise the possible concordance between the maxillary incisors inclination and the facial axis, the articular eminence inclination and the palatal functional inclination of the maxillary incisors. <em><strong>Methods:</strong></em><strong><em> </em></strong>We perform an observational cross sectional study with 315 cone beam tomographic images from 63 healthy patients. Then a single technician carried out all the measures. The statistical analysis included T test, regression, and intra-class correlation. <em><strong>Results:</strong></em> There´s no statistical correlation between the articular eminence angle and the maxillary incisor inclination, nonetheless the facial axis present a low correlation and the functional palatal surface of the maxillary incisors present a high correlation with the inclination of the upper incisors. <em><strong>Conclusion:</strong></em><strong><em> </em></strong>We conclude that the maxillary inclination could be answer by others functional factors such as neutral zone, occlusal function, and facial biotype except the articular eminence inclination. On the other hand, the facial axis should be taken into account in orthodontic planning treatment and could be a key factor to stablish the maxillary incisor inclination.</p>
Los andamios son usados actualmente en salud para dar soporte estructural a tejidos, guiar el crecimiento celular, controlar colonias bacterianas y promover procesos metabólicos. Se ha planteado varios métodos de conformado y dependiendo de sus características físicas pueden ser aplicadas a diferentes enfoques en áreas de salud. La siguiente revisión ilustra cómo han influido los avances de los andamios (scaffolds) de quitosano en el ámbito de bioingeniería y salud, su relación con aminoácidos, métodos de elaboración de hidrogeles, y cuáles serían sus principales beneficios para una terapéutica según objetivos de los tratamientos contemporáneos en odontología. Se realizó una revisión en las bases de datos Scopus y Web of Science y se tuvieron en cuenta 23 artículos originales de investigaciones in-vitro, de modelo animal, cohortes, ensayos clínicos aleatorizados. Se concluye que los andamios de quitosano son propicios para ser usados en tejidos, y dependiendo de su grado de desacetilación y peso molecular pueden ser útiles para diferentes objetivos biológicos. No existe un protocolo establecido y no se pudo encontrar una relación de efectividad entre el peso molecular o su grado de desacetilación con la función biológica a evaluar. Se requiere mayor investigación para poder aplicarlo a las diferentes especialidades odontológicas.
The orthodontic minitubes system (FLOWJAC ® System, Bogotá, Colombia) is an innovating system that blend the selfligating philosophy techniques and a lowprofile appliance. The FLOWJAC® System works with low orthodontic forces, same as selfligation devices. The system uses heat-treated wires with better physical properties such as hysteresis when is compare with traditional wires. However, the FLOWJAC® technique doesn´t use a wire sequence to get a “working wire”, just a 0,014 Copper NiTi. The clinician in each appointment must modify the minitube location to the clinical desire teeth position. The present report blend FLOWJAC® devices in the upper arch and clear selfligation in the lower arch. The patient treated has mandibular bone resorption due a alloplastic chin augmentation. The root apex from first right premolar to the first left premolar seen to be near to the resorption area using Cone Beam Computer Tomography. That´s the reason why we use a pre-adjust devices in the lower arch, to avoid pulpar and periodontal counter effects. This case was finished with proper functional and aesthetics objectives; such as molar and canine class I, anterior open bite closure with 20% of overbite, coincidence of dental smile arch with lower lip, and without root and pulpar counter effects. The porpoise of this report is to present an orthodontic case with bone resorption on right premolar and incisors area of the mandible. The case was treated with selfligation orthodontics system; FLOWJAC® System in the upper arch and Empower Clear® (American Orthodontics Shebboyiang, USA) in the lower arch and could be done with a precise diagnosis and adequate treatment planning.
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