The main research objeetive was to determine the effect that proteins and iron have; when they are included in the diet, over bone growing and development in Holztman albino rats 21 days old. They were divided in 4 experimental group: Al ( protein lOg., iron 29mg.), A2 (protein lOg., iron 46mg.), Bl(protein 5g., iron 29mg.), B2 (protein 5g., iron 46mg.) and were sacrificed 46 days after research beginning. There were taken cranium facial Skeleton, mandible and femur measures and they were stained with hemotixilin- eosin, Schiff peryodic acid and Potassic ferrocianurun. Our resuIts show that growing and deve/omen! of rats is directly related with protein and concentration of consumed dieto Weight and length of Craniofacial skeleton,mandible femur as well as number of osteoblasts, osteocites,osteclasts and hemosiderin of A groups were significantly greater in the relation with B groups. Gr...

The main research objeetive was to determine the effect that proteins and iron have; when they are included in the diet, over bone growing and development in Holztman albino rats 21 days old. They were divided in 4 experimental group: Al ( protein lOg., iron 29mg.), A2 (protein lOg., iron 46mg.), Bl(protein 5g., iron 29mg.), B2 (protein 5g., iron 46mg.) and were sacrificed 46 days after research beginning. There were taken cranium facial Skeleton, mandible and femur measures and they were stained with hemotixilin- eosin, Schiff peryodic acid and Potassic ferrocianurun. Our resuIts show that growing and deve/omen! of rats is directly related with protein and concentration of consumed dieto Weight and length of Craniofacial skeleton,mandible femur as well as number of osteoblasts, osteocites,osteclasts and hemosiderin of A groups were significantly greater in the relation with B groups. Gr...

La investigación tuvo como objetivo determinar el efecto que produce la proteína y el hierro en la dieta sobre el crecimiento y desarrollo corporal, macizo craneofacial, la mandíbula, el fémur de las ratas albinas. Las ratas recibieron los siguientes regímenes alimentarios: A1 (proteína 10g, hierro 29mg), A2 (proteína 10g, hierro 46mg), B1 (proteína 5g, hierro 29mg ) y B2 (proteína 5g, hierro 46mg). La muestra estuvo conformada por 28 ratas albinas Holtzman de 21 días de edad, se conformaron 4 grupos experimentales. La alimentación fue “ad libitun ” y se registro el consumo de la dieta; así como el peso corporal ganado. El registro fue durante todo el experimento. Los animales fueron sacrificados a los 46 días de iniciada la experimentación, luego se procedió a extraer el macizo craneofacial, la mandíbula, el fémur de pierna derecha. Una vez limpiado todo el tejido b...

La nutrición es un fenómeno peculiar y activo de los seres vivientes en su constante proceso de intercambio con el medio ambiente. Objetivo. Se evaluó el efecto histomorfológico en la mandíbula de ratas albinas sometidas a dieta deficiente en proteína con diferentes concentraciones de hierro. Metodología. La muestra fue de 24 ratas albinas Holzman machos; de 21 días de nacidas, agrupadas en 4 grupos experimentales, alimentadas “ad libitum” durante 46 días; grupo A (control) recibió proteína 10g.hierro 29 mg./100g.,grupo B recibió proteína 10g., hierro 46 mg. /100g; grupo C proteína 5g. Hierro 29 mg/100g); grupo D proteína 5g., hierro 46 mg/100mg.Se controló el peso corporal y consumo del alimento. La medición anatómica de la mandíbula (longitudinal vertical, grosor del cuerpo, longitud vertical rama) y primera molar inferior.(longitud coronal y mesiodistal), análi...

This research was carried out in a probabilistic randomized sample of 117 dental surgeons who work in hospitals from the Armed Forces, Social Security and the Ministry of Health (MINSA) from Lima and El Callao, during the months of March and April 2008. Its objective was to determine the levels of the Burnout Syndrome in this population and its association with some socio-demographic, labor and general health variables. The Maslash Burnout Inventory questionnaire, as well as a personal data sheet were applied for such study. The results show that 44.6 % of the dental surgeons present severe-level Burnout Syndrome and statistically significant associations were found with sex and the presence of health problems as variables.

This research was carried out in a probabilistic randomized sample of 117 dental surgeons who work in hospitals from the Armed Forces, Social Security and the Ministry of Health (MINSA) from Lima and El Callao, during the months of March and April 2008. Its objective was to determine the levels of the Burnout Syndrome in this population and its association with some socio-demographic, labor and general health variables. The Maslash Burnout Inventory questionnaire, as well as a personal data sheet were applied for such study. The results show that 44.6 % of the dental surgeons present severe-level Burnout Syndrome and statistically significant associations were found with sex and the presence of health problems as variables.