RESUMO
OBJECTIVE: The aims of this study were to assess the reliability, reproducibility and validity of mesiodistal and buccolingual measurements comparing these measurements collected using an electronic hand-held digital calliper, on dry dentitions and on dental casts, with measurements obtained from 3D digital models created using a portable intra-oral scanner. DESIGN: The mesiodistal and buccolingual diameter of the crown of 1304 teeth were measured on dry dentitions and on dental casts, and secondly on 3D digital models created using an intra-oral 3D scanner. Reliability, reproducibility and validity were evaluated using the intraclass correlation coefficient (ICC) and the Bland-Altman graphic method. RESULTS: The results of the intraclass correlation coefficient expressed an excellent degree of agreement in the intra- and inter-observer error analysis, as well as in the comparison of the mesiodistal and buccolingual dimensions taken with the calliper and those taken in digital 3D models. The results of the Bland-Altman method showed that the greatest differences were found in the mesiodistal diameter of the molars and in the buccolingual diameter of the upper premolars. CONCLUSIONS: Mesiodistal and buccolingual measurements obtained from digital 3D models are suitable for recording dentitions for forensic purposes.
Assuntos
Imageamento Tridimensional , Modelos Dentários , Coroa do Dente , Dente Pré-Molar , Humanos , Dente Molar , Reprodutibilidade dos TestesRESUMO
Se estudiaron mediante necropsia los hallazgos anatomopatológicos en 20 fallecidos por infarto agudo del miocardio que habían recibido tratamiento con estreptocinasa recombinante cubana. Hubo predominio del sexo masculino (70 por ciento). En todos los casos se observó arteriosclerosis severa de los tres vasos coronarios. En el 75 por ciento no se encontró trombo, y en los 5 casos restantes donde se comprobó la presencia de trombo, la muerte ocurrió 72 horas después de administrada la estreptocinasa. Como hallazgos anatomopatológicos se encontraron: rotura cardiáca en el 60 por ciento de los fallecidos, pericarditis epistenocardíaca en el 55 por ciento y toma de músculos papilares en el 20 por ciento. Entre las principales causas que contribuyeron a la muerte se encontró, en mayor porcentaje, la enfermedad ateromatósica (95 por ciento) y el edema pulmonar severo (75 por ciento)
Assuntos
Fibrinolíticos/efeitos adversos , Estreptoquinase/efeitos adversos , Infarto do Miocárdio/mortalidadeRESUMO
Recent findings suggest that vasoactive intestinal peptide (VIP) may be a physiological regulator of prolactin secretion and may also be involved in the control of LH secretion. In the present work we have studied the effect of the blockade of endogenous VIP by means of the injection of a specific rabbit anti-VIP serum, in male and female rats with hyperprolactinemia. The administration of 0.5 ml of the VIP antiserum in ovariectomized rats given an acute or chronic treatment with 17 beta-estradiol induced a significant decrease in serum prolactin and LH levels as compared with estrogenized-control rats injected with normal rabbit serum. Anti-VIP serum also reduced serum LH levels in ovariectomized rats not treated with estrogens. The administration of the same antiserum decreased serum prolactin levels in male rats implanted with 2 anterior pituitary glands under the kidney capsule. On the other hand, the injection of the anti-VIP serum in the morning in proestrus rats brought about an increase in serum prolactin and LH levels in the afternoon of the same day. These results confirm previous data showing that VIP is a stimulator of prolactin release, and may also participate in the control of LH secretion in ovariectomized rats acting as a facilitatory factor. During proestrus however, VIP may act in an opposite way, inhibiting, rather than stimulating, prolactin and LH release.