Los Restos epiteliales de Malassez son células que se encuentran alrededor de las raíces de las piezas dentarias formando parte de los tejidos del ligamento periodontal, disponiéndose en forma de red. Las funciones que éstos desempeñan no es muy específica, sin embargo, se demostró su participación en cuanto al mantenimiento del espacio del ligamento periodontal, la regeneración del tejido periodontal, regeneración del cemento entre otros, además de tener capacidad de diferenciarse en otros linajes celulares demostrando así su capacidad como célula madre y el papel más conocido que tienen es su participación y proliferación en la formación de diversas patologías, como quistes y tumores odontogénicos.

Epithelial rests of Malassez are cells that are arranged in a network located around the roots of the teeth forming part of the periodontal ligament tissues. The functions that these cells perform are not very specific, however, they have shown to participate in the maintenance of the periodontal ligament space, regeneration of periodontal tissue, including cement regeneration among others. In addition, they are able to differentiate into other cell lineages, thereby demonstrating their capacity as stem cells. These cells are best known for their role in the participation and proliferation of the formation of different pathologies, such as cysts and odontogenic tumors.

Objective: To determine the most frequent anatomical variants of the maxillary sinus by evaluation using cone beam computed tomography (CBCT) in a Guatemalan population attending the DISA Radiological Center in the period 2013-2018. Materials and Methods: Descriptive cross-sectional study. 217 CBCT was performed in a total of 434 maxillary sinuses, determining the frequency of anatomical variants, the presence of pneumatization of the maxillary sinus and their classification and sinus septa in association with sex and the dental condition of the patient. Measurements were made by a trained and calibrated researcher, using Carestream CS 3D software. The Chisquare test was used to determine associations among variables (p<0.05). Results: The frequency of pneumatization of the maxillary sinus was 79.2%, with class II being the most prevalent with 53.5%. The distribution and frequency of ...

Interpretation of the state of healing of chronic apical periodontitis or apical curettage with apicoectomy in radiological images is based on the analysis of changes in the appearance of the periapical area and in the bone structure adjacent to the site of inflammation or surgical intervention, which are projected onto normal bone structures. However, distortion of structures or the superposition of anatomical images should be considered when interpreting radiographs. We compared conventional studies of evaluation of the periapical area following treatment, together with 2D images, with the periapical index and the criteria of evaluation in both successful and unsuccessful cases of endodontic surgical treatment. Some studies have reported that the radiographic appearance of the tooth crown and root may facilitate interpretation of the periapical area. In addition, cone-beam computed tom...

El objetivo de este estudio fue realizar una revisión actualizada de la literatura sobre la importancia del uso de la tomografía computarizada de haz cónico (TCHC) en el reconocimiento de la trayectoria y las variantes del canal mandibular (VCM), ya que esta permite obtener imágenes de alta calidad, con una exactitud de 94%, aproximadamente, mientras que la radiografía intraoral periapical (RIP) tiene un 53% y la radiografía extraoral panorámica (REP) presenta un 17% de exactitud. Las incidencias de las variantes del canal mandibular en estudios realizados utilizando TCHC fueron entre un 1,3% y un 69%. Estas pueden diferir entre los pacientes de diferentes orígenes étnicos y, a su vez, dentro de la misma población étnica; además, hay grandes diferencias en los tipos y configuraciones de las VCM dentro de cada grupo étnico. Estudios realizados han demostrado histológicamente...