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Compara la resistencia adhesiva mediante la prueba de cizallamiento in vitro de dos tipos de brackets (Metálicos y Cerámicos) con retención mecánica y su efecto sobre el esmalte dental. Es un estudio comparativo, descriptivo y transversal. La muestra estuvo comprendida por 30 dientes premolares, divididos en dos grupos de 15 (Grupo 1, brackets metálicos y grupo 2, brackets cerámicos de la marca Ortho Classic OC). Los brackets fueron adheridos sobre la superficie del esmalte de premolares humanos utilizando resina (Transbond XT, 3M Unitek). Luego se evaluó la resistencia al cizallamiento con una Máquina Universal de Ensayos (Alfred Amsler de Suiza). Los datos obtenidos en Kilogramos fuerza, fueron convertidos a Megapascales (Mpa). 22.7 Mpa para los brackets metálicos y 18.4 Mpa para los brackets cerámicos. Por otro lado la superficie de los dientes fueron observados al electromi...

Down syndrome in children is associated with multiple orofacial alterations, among them delayed tooth eruption has been mentioned, the understanding of which is not yet fully known. A review was carried out to analyze the concepts of tooth eruption and the available evidence regarding delayed tooth eruption in children with Down syndrome, and its relationship with tooth maturation or with other systemic and local factors. Few studies were observed on the subject, however, with the found literature it was possible to conclude that the delay in tooth eruption seems not to be related to the maturation of the tooth, but it is related to other processes that take place during tooth eruption or it may be part of the general delay in growth and development that characterizes Down syndrome.

Down syndrome in children is associated with multiple orofacial alterations, among them delayed tooth eruption has been mentioned, the understanding of which is not yet fully known. A review was carried out to analyze the concepts of tooth eruption and the available evidence regarding delayed tooth eruption in children with Down syndrome, and its relationship with tooth maturation or with other systemic and local factors. Few studies were observed on the subject, however, with the found literature it was possible to conclude that the delay in tooth eruption seems not to be related to the maturation of the tooth, but it is related to other processes that take place during tooth eruption or it may be part of the general delay in growth and development that characterizes Down syndrome.