Mesiodens are supernumerary teeth located between the two upper central incisors whose presence could contribute to the development of malocclusions. This report presents the case of an 8-year-old male patient, who had a mesiodens and an additional supernumerary tooth close to the midline, who were deviating the eruptive path of the permanent incisors, as well as causing severe axial rotation. The supernumerary teeth were extracted and two years later in the absence of spontaneous correction in the position of the affected teeth, the corrective treatment took process using 4x2 orthodontic appliances. Subsequently, when the permanent dentition was complete, full orthodontic appliances were installed, achieving satisfactory results at the end of the treatment. The timely extraction of the supernumerary teeth allowed, although with the presence of malpositions, the complete eruption of the ...

Mesiodens are supernumerary teeth located between the two upper central incisors whose presence could contribute to the development of malocclusions. This report presents the case of an 8-year-old male patient, who had a mesiodens and an additional supernumerary tooth close to the midline, who were deviating the eruptive path of the permanent incisors, as well as causing severe axial rotation. The supernumerary teeth were extracted and two years later in the absence of spontaneous correction in the position of the affected teeth, the corrective treatment took process using 4x2 orthodontic appliances. Subsequently, when the permanent dentition was complete, full orthodontic appliances were installed, achieving satisfactory results at the end of the treatment. The timely extraction of the supernumerary teeth allowed, although with the presence of malpositions, the complete eruption of the ...

Objetivo. Determinar la distancia de los ápices radiculares de premolares y molares superiores al piso del seno maxilar y su relación con el patrón esquelético. Métodos. Estudio transversal que incluyó 75 casos pre-tratamiento ortodóntico de archivos de pacientes que asistieron al Posgrado de Ortodoncia de la Universidad Autónoma de Nayarit, México. Se determinó el patrón esquelético de los pacientes por medio de radiografías cefálicas laterales y de acuerdo a la clasificación de Angle se agruparon en Clase I, Clase II y Clase III. Se midieron, sobre cortes realizados con tomografía computarizada de haz cónico, las distancias entre los ápices de segundos premolares, primeros y segundos molares superiores y el piso del seno maxilar. Se utilizó el software Ez3DPlus Versión 1.2.6.0 (Vatech, Gyeonggi-do, Korea). Se realizó el análisis de los datos mediante la prueba de ...

Objective. To determine the distance between root apices of premolars and upper molars to the floor of the maxillary sinus and their relationship with the skeletal pattern. Methods. A cross-sectional study that included 75 orthodontic pre-treatment cases from the files of patients who attended the Orthodontic Postgraduate Course at the Autonomous University of Nayarit, México. The skeletal pattern of the patients was determined through digital lateral cephalometric radiographs and according to the Angle classification they were grouped in Class I, Class II and Class III. The distances between the apices of the second premolars, first and second upper molars and the floor of the maxillary sinus were measured on cone beam CT scans. The software Ez3DPlus Version 1.2.6.0 (Vatech, Gyeonggi-do, Korea) was used. Data analysis was performed using the Student t-test. Results. Significant differe...

Objectives: To compare the strength and length of thermoset and thermoplastic elastomeric chains. Materials and Methods: An in vitro study was performed with a sample of 72 thermoplastic and 72 thermoset chains, divided into 6 times groups (initial, 1, 7, 14, 21 and 28 days). Thirty-six templates were manufactured with 20 mm separation. To hold the chains at a constant length; they were immersed in artificial saliva. Housed in an incubator at 37° C. Force was measured with a dynamometer and length with a digital vernier caliper. Student’s t test, ANOVA and Tukey’s post hoc test were performed. Results: The mean initial force of the thermoset chains (309.58 g) was lower than of the thermoplastic chains, and at 28 days the thermoplastic chains (322.5 g) had a greater loss of force (46.2%) and the thermoset chains 35%. The thermoplastic chains had greater dimensional changes (49.9%) an...