RESUMEN
Proper training must prepare responders to consider various hazards and means by which to mitigate their effects. This article describes one such training program (the National Disaster Life Support program) as a possible means to prepare dental providers to better respond to disasters and describes a simple triage technique that can be used by dental professionals to triage patients.
Asunto(s)
Defensa Civil , Planificación en Desastres , Desastres , Servicios Médicos de Urgencia , Defensa Civil/educación , Defensa Civil/organización & administración , Medicina de Desastres/educación , Medicina de Desastres/organización & administración , Planificación en Desastres/organización & administración , Georgia , Personal de Salud , Humanos , Relaciones Interinstitucionales , Relaciones Interprofesionales , Trabajo de Rescate , Medición de Riesgo , Seguridad , Texas , Triaje , Estados UnidosRESUMEN
This study investigated the hypothesis that the new resin-reinforced, ligth-cured glass ionomer cement (GIC) can develop mechanical retention by forming a hybrid layer in acid-etched dentin. Dentin discs were obtained from extracted human third molars and sanded with 320 SiC abrasive paper. One third of the surface was acid etched with 10 percent maleic acid for 15 seconds, washed any gently air-dried for 5 seconds. ProBond primer from VariGlass (VG) GIC kit was applied onto the acid-etched surface (A) and another third of the unetched surface (B) for 30 seconds. One third of the surface was not treated (C). VG GIC was then applied onto the entire surface of the disc. After 24 hours the discs were fractured along their diameters. One half of the fractured was highly polished at the interface and treated with 6N HC1 for 30 seconds while the other half of the fractured specimen was left untreated. Both halves were viewed by SEM. In another part of the study, a micro-tensile bond strength (MTBS) test was carried out to compare the acid-etched group vs. the nonetched group. SEM pictures revealed a well defined demineralized, resin-infiltrated zone approximately 3 um in thickness for group (A) for both fractured and polished surface. Dentin surface that only received primer (B) showed an irregular zone 0.5-1.5 um thick. Such a resin-infiltred layer was resistant to HC1 treatment. A gap was observed between the GIC and dentin in group (C). Polished interfaces appeared to be highly infiltrated. However, fractured interfaces revealed considerable porosity within the demineralized-infiltrared zone. MTBS results were (x +- SD, MPa): 28.9 +- 5.8 for the etched group and 24.5 +- 4.9 for the nonetched group. This difference was statistically significant