Supervivencia y estado de restauraciones con ionómero vítreo en un programa escolar docente-asistencial / Survival and status of glass ionomer restorations at a teaching care school program

Objetivos: describir la supervivencia y estado post-1 año de restauraciones con ionómero vítreo (IV) realizadas por recurso humano preprofesional y analizar la asociación entre el estado de las mismas y variables intervinientes. Métodos: se evaluaron 129 restauraciones (en 54 escolares; edad: 6 y 7 años) con IV (Ketac Molar Easymix), realizadas por estudiantes del último año de la carrera de odontología en un programa escolar con un a técnica sistematizada basada en los criterios de la restauración atraumática. Para la evaluación, cuatro examinadores basaron sus observaciones en el criterio de Franken que establece 7 categorías: 0= presente en buenas condiciones, 1= ligero defecto marginal, 2= ligero desgaste, 3= defecto marginal >0,5 mm, 4= desgaste >0,5 mm, 5= restauración partida o parcialmente perdida y 6= no presente. Para su análisis descriptivo, fueron reagrupadas en 3 categorías en términos de necesidad de reintervención: N1 (0 y 2) no necesita reintervención, N2 (1 y 3) necesita mínima intervención y N3 (4, 5 y 6) requiere reemplazo. Se consideran variables intervinientes: dentición, extensión de la cavidad y presencia de lesiones activas de caries en la cavidad bucal post-1 año clínica. Se calcularon las distribuciones de frecuencia y se estudió asociación con la prueba de Chi cuadrado. Resultados: la tasa de supervivencia post -1 año fue de 94,6 por ciento. El estado de las restauraciones mostró asociación significativa con la presencia de actividad de caries en boca en el momento de la evaluación. Conclusiones: la tasa de supervivencia de las restauraciones con IV post-1 año realizadas por recursos humano preprofesional supervisado, fue alta. La presencia de actividad de caries en boca podría ser una variable del estado de las restauraciones

Aerobiologia 2.0: a software program for processing aeropollen data.

"Aerobiologia 2.0" is a simple computer program created to handle the pollen data collected every 2 hrs and daily by aerobiological monitoring stations equipped with Hirst-type spore traps. "Aerobiologia 2.0" runs on Windows 3.1 and is compatible with other programs that run on this operating system. The program was developed to store and process pollen data through a few straightforward operations. An unlimited calendar automatically calculates the day of the week. The pollen dictionary, which can hold up to 1216 different pollen types, may be modified or changed completely. Concentrations for every pollen type (in pollen grains/m3) are automatically recorded daily and every 2 hrs. 10-day and monthly sums are also calculated. The percentage of selected types, groups, or families of pollen collected each day, every 10 days, and monthly is quickly available. Pollen calendars and spectra in 24-hr, 10-day, monthly, tri-monthly, half-year, and yearly periods are readily produced. As soon as it is entered, the pollen data are saved on hard disk. A year's worth of data can be saved on a single 1.44 M byte floppy disk. Aerobiologia 2.0 is being used successfully to process the aeropollen data collected at the two monitoring stations managed by our Palynological Laboratory.

Findings of dermatitis and myositis in guinea fowl (Numida meleagris).

Histopathological and microbiological features of dermatitis and myositis observed in guinea fowl at the slaughterhouse are presented. Meat inspection measures have also been considered.

[A teaching-learning experience: changes in beliefs and behaviors in the management of drinking water]. / Experiencia de enseñanza-aprendizaje: cambio de creencias y conductas en el manejo del agua de consumo.

It was studied a change in the children's beliefs and behaviour with regard to their handling of drinking-water by using a teaching-learning experience by means of microscopic observation of polluted water. A structured pre-test on problem-solving were administered to 63 6th and 7th grade elementary school children (28 boys and 35 girls). An of these children came from an underprivileged population in the north of Buenos Aires, Argentina. Their average age was of 12 years 8 months and SD = 1 year 1 month. Each adequate aspect of their behaviour scored one point: hygiene and protection of containers for collection and storage, water treatment (boiling or the addition of chlorine) and the conservation period. The best beliefs ("to avoid the water contamination that produces illness") scored two points. The number of pupils that changed their beliefs and and behaviour in the post-test was established and the significant difference was found by means of Chi square test (X2). The children did not, in general, improve their behaviour or beliefs. They maintained adequate hygienic behaviour, but did not put into practice the protection of the containers used for the collection. Behaviour regarding storage was still inadequate. The pupils did acquire correct behaviour as regards storage was still inadequate. The pupils did acquire correct behaviour as regards treatment by the boiling of water or the addition of chlorine (P less than 0.01). However, the beliefs involved did not change.(ABSTRACT TRUNCATED AT 250 WORDS)

[Drinking water and garbage: customs and beliefs among schoolchildren of a marginal population]. / Agua de consumo y basuras: costumbres y creencias en escolares de una población marginal.

A study of 80 children from 6th and 7th grades was conducted to determine their beliefs and behaviours about drinking-water and garbage management. The children come, in their totality, from a poor suburban population of the north of Buenos Aires. The survey showed that most of the children kept some drinking-water provision at home. Therefore, they had to collect, treat, and store the water. The pupils had correct knowledge about the process of contamination and some adequate behaviours concerning the hygiene of collection containers, but also showed inadequate conceptions about the protection of such containers and water treatment. The children reported inadequate behaviours and incorrect beliefs about the elimination of garbage. These results establish the need for teaching-learning experiences designed to reinforce correct knowledge and behaviours and modify the incorrect ones.