Frecuencia de lesiones de la mucosa oral en el servicio de urgencias y orientación de pacientes de la facultad de odontología de la Universidad de Buenos Aires / Frequency of oral mucosal lesions at the emergency service and patient orientation of the school of dentistry, University of Buenos Aires

Objetivo: estimar la frecuencia de lesiones que afectan la mucosa oral, en una muestra de pacientes que concurrieron por demanda espontánea al Servicio de Urgencias y Orientación de Pacientes (SUYOP) de la Facultad de Odontología de la Universidad de Buenos Aires, a fin de valorar las características de esta población y poder adoptar conductas preventivas adecuadas. Materiales y métodos: Un operador único perteneciente al SUYOP evaluó a todos los pacientes que ingresaron al estudio (n=503) yposteriormente un especialista único, perteneciente a la Cátedra de Estomatología, examinó a aquellos pacientes que presentaron lesiones(n=208) a fin de determinar el diagnóstico de certeza de las mismas. Todos los diagnósticos fueron confirmados mediante biopsia, estudiode cultivo, o seguimiento clínico de la enfermedad. Resultados: 41,35 por ciento (n=208) de los pacientes examinados presentaron al menos una lesión estomatológica en la mucosa oral. 89 por ciento (n=185) de los pacientes con lesiones desconocía la existencia de las mismas y solamente el 11 por ciento (n=23) se presentó a la consulta con una derivación u orientación estomatológica. 23 por ciento (n=48) de los pacientes que presentaron lesiones fueron considerados de gravedad diagnostica. Conclusión: Los datos obtenidos en el presente estudio revelan la importancia de las campañas para concientizar a la sociedad acerca de la necesidad de realizar consultas de rutina, pero también, y muy especialmente, concientizar a estudiantes y profesionales de la salud en el examen exhaustivo de la mucosa oral de todos los pacientes.

Objective: to estimate the frequency of lesions affecting the oral mucosa in a sample of patients seeking unscheduled care at theEmergency and Patient Referral Service (EPRS), School of Dentistry, University of Buenos Aires, with the aims to evaluate thecharacteristics of the studied population and thus adopt appropriate preventive measures. Materials and Methods: A single operatorfrom the EPRS assessed all the patients included in the study (n=503), after which a single specialist from the Oral MedicineDepartment examined patients presenting oral mucosal lesions (n=208) to establish definitive diagnosis. All diagnoses were confirmedby biopsy, culture studies, or clinical follow-up. Results: 41.35% of studied patients (n=208) had at least one oral mucosal lesion; 89%(n=185) of patients who had a lesion were unaware that they had a lesion, and only 11% (n=23) of patients knew they had a lesion.23% who had a lesion were considered as gravity diagnosis patients. Conclusion: All the obtained data show the importance of conducting campaigns in the community to increase the awareness of the need for regular routine dental visits, and particularly, to create an awarenessamong dental students and health care professionals of the importance of thoroughly examining the oral mucosa of all patients.

A study of quality of bremsstrahlung spectra reconstructed from transmission measurements.

A numerical method for the reconstruction of bremsstrahlung spectra has been applied to the analysis of simulated data. The method is found to be reliable in reconstructing x-ray spectra of maximum energy up to 10 MeV. Measurements of aluminum transmission data carried out for five linear accelerators have also been analyzed by this method to determine the fractional energy fluence. The values of the Spencer-Attix water/air stopping power ratio, SS.A. w,air, reported as a function of the ratios TPR20 10, are in good agreement with computed results. Quality index values were correlated to mean incident energies of x-ray beams used in radiotherapy. The experimental setup has also provided information regarding the softening effect on the off-axis beam, which can be used in clinical computer dosimetry to correct conventional zero field size tissue maximum ratio.