RESUMEN
The aim is to compare the resistance to torsion between 2 implant systems with internal hexagon connection: one using screw-retained abutments (Titanium Fix) and the other using cementable abutments (ITEC) under a tangential load. An in vitro experimental study was carried out. Fourteen implants, 7 implants from each system, were included in this study. The implants were placed at a 45° angle into metal blocks to simulate their position in the maxilla. Then, implants were subjected to a resistance test on a CMT5L universal testing machine, and the maximum load was applied to each sample. The maximum force with which the torsion was achieved in each sample was analyzed. The data were tested using the Shapiro-Wilk test and showed normal distribution. Student t test was used to examine statistical significance between the two groups, and the P value was set at P < .05. There was a statistically significant difference between the two groups (P = .001). ITEC implants with a cementable abutment showed greater flexural strength compared to the Titanium Fix with a screwed abutment implant system. The cemented abutment showed more resistance to torsion against a tangential load compared with the screwed abutment.
Asunto(s)
Pilares Dentales , Análisis del Estrés Dental , Proyectos Piloto , Diseño de Implante Dental-Pilar , Titanio/química , Torsión Mecánica , Cementos Dentales , Humanos , Ensayo de Materiales , Técnicas In Vitro , Tornillos ÓseosRESUMEN
La peritonitis es la principal complicación en pacientes que reciben diálisis peritoneal continua ambulatoria. Los microorganismos grampositivos son los que con más frecuencia se aíslan y de estos Staphylococcus aureus es el agente causal predominante. Entre los factores de riesgo para el desarrollo de la infección relacionada con la diálisis peritoneal destacan las alteraciones en la inmunidad celular y humoral, las metabólicas y las enfermedades crónicas concomitantes. El tratamiento debe ser individualizado puesto que hay múltiples esquemas cuya utilización depende del tipo de infección, del organismo causal y de la respuesta inmunológica del paciente. En la mayoría de los casos el padecimiento es benigno y sólo se cura si se identifica tempranamente, y el tratamiento se encamina al lavado exhaustivo de la cavidad