Examinando por Materia "Tomografía computarizada Cone Beam"

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Acceso abierto
Evaluation of the upper third molar and its relationship with the maxillary sinus in CT scans Cone Beam, Lima 2022
(Universidad Privada Norbert Wiener, 2024-05-30) Mendoza Roberto, Bianny Felicita; Garavito Chang, Enna Lucila
The purpose of this study was to determine the relationship between the upper third molar and the maxillary sinus as evaluated in Cone Beam CT scans, Lima 2022. The study was observational, cross-sectional, and retrospective. A total of 90 CT scans were used, and observation along with a data collection sheet was the instrument employed. For the relationship between the upper third molar and the maxillary sinus, the Jung and Cho classification was used. Additionally, the Winter and Modified Archer classifications were applied. It was found that 41.7% of the patients had the sinus floor above the roots (Class 1), while 44.4% (Class 2), 12.5% (Class 3), 0.7% (Class 4), and 0.7% had the sinus floor extending to the neck of the tooth. The largest number of patients (26.4%) were women who had the sinus floor above the roots (Class 1). The largest number of patients (27.1%) were between 18 and 29 years old, and the sinus floor touched the ends of the root (Class 2). On the right side, 24.3% of patients had the sinus floor above the roots (Class 1). 63.9% of the patients presented a vertical spatial location of the upper third molar according to the Winter classification, and 68.8% had class A impaction according to the Archer classification. The study concludes that the most frequent relationship between the maxillary sinus and the upper third molar is when the sinus floor is above the roots.
Acceso abierto
Imaging characteristics of osteoarthritis in the TMJ, using panoramic radiography and CONE BEAM computed tomography in patients treated at the maxillofacial diagnostic institute
(Universidad Privada Norbert Wiener, 2020-08-04) Eusebio Fernandez, Luis Gustavo; Mezzich Gálvez, Jorge Luis
The objective of this research was to determine the imaging characteristics of osteoarthritis in the temporomandibular joint (TMJ), using panoramic radiography and CONE BEAM computed tomography in patients treated at the maxillofacial diagnosis institute. An observational, retrospective, cross-sectional, and descriptive study was conducted. A population and sample of 42 patients were determined using panoramic radiography and CONE BEAM computed tomographies. The following variables were collected: sex, age, location of the condyle, and imaging characteristics of osteoarthritis of the temporomandibular joint. The database registration and statistical analysis of the information was carried out through the SPSS statistical program version 23. The results showed that the flattening characteristic is the most frequent. Females are the most predominant sex, and the left condyle is the most affected with osteoarthritis of the temporomandibular joint. The agreement regarding the diagnosis of osteoarthritis of the temporomandibular joint using panoramic radiography and Cone Beam computed tomography is 61.9%. It is concluded that the imaging characteristic of flattening, on the left side and in females, are the most frequent.
Acceso abierto
Medidas del ancho de la tabla ósea vestibular y lingual de la zona anteroinferior de la mandíbula con tomografía cone beam en pacientes adultos
(Universidad Privada Norbert Wiener, 2019-09-25) Cano, Jhonatan; Alarcón, Omar; León, Gina; Hernández, Harold
El camuflaje en ortodoncia es una alternativa no quirúrgica para solucionar maloclusiones. En estos casos, los dientes donde se ejerce mayor biomecánica son los anteroinferiores, por lo que es importante tener en cuenta la anatomía ósea en esta zona. Por tanto, nuestro objetivo es hallar medidas de la tabla ósea lingual y vestibular de la zona anteroinferior de la mandíbula con ayuda de la tomografía computarizada Cone Beam (TCCB). La muestra estuvo compuesta por un total de 30 pacientes a los que se les realizó una TCCB como parte del diagnóstico ortodóntico. El tomógrafo utilizado fue Sirona y las imágenes fueron procesadas mediante el software PointNixt RealScan 2.0-CDViewer. Las medidas muestran un aumento de la tabla vestibular en la maloclusión clase III, mientras que en la maloclusión clase II aumenta la tabla lingual; en cuanto a las mediciones de la reproducibilidad interexaminador, estas resultaron elevadas siendo los coeficientes de correlación interclase [ICC ≥0.99]. Debemos tener presente la anatomía ósea de los maxilares cuando vamos a camuflar con ortodoncia una maloclusión. La TCCB nos permite realizar mediciones de manera fiable, por lo que pueden ser empleados como registro de diagnóstico en el ámbito de la ortodoncia.