[The role of anthropologic study in the stomatognatic morphologic changes through time]. / Importanta studiului antropologic în modificarile morfologice ale sistemului stomatognat de-a lungul timpului.

OBJECTIVES: The possibility of a prognosis regarding the morphologic aspect of the passive component of stomatognathic apparatus was assessed through some researches on the viscero-cranium aspect. METHOD: The study used 20 skulls or skull fragments, 8 were from the first century A.D., 4 from the Middle Ages and the rest of 8 were from the XX-th century. All The skulls were found on the Romanian territory. A series of measurements were made on the maxilla, mandible and on the face as a whole; the results were compared with the literature data. RESULTS: The skulls discovered in the Neolithic necropolis existing on the Romanian territory are of mediterranoic type, with an antero-posterior prolonged skull and with narrow dental arches, presenting a prognathism according to the shape of the skull. After the Neolithic, the shape of the skull changes to a more rounded one and the dental arches become upsiloid. In the Middle Age, the dental arches tend to evolve from the upsiloid type to the paraboloid type. In our century, the paraboloid form of the dental arches is maintained (semiellipitic shape of the maxilla and the parabolic shape of the mandible). CONCLUSIONS: During the ages, the evolution of masticator apparatus was influenced mainly by the genetic factor regarding the shape and the pathology, but also, in some degree, by the dietary habits. Multiple changes have been made possible a gene crossing between individuals. Due to the genetic mixture between the local element and the migratory population, the evolution of the stomatognathic apparatus to paraboloid dental arches is explained, although upsiloid dental arches can be found.

[The vasa vasorum in the veins of the spermatic cord]. / Aspectul vasa vasorum în venele cordonului spermatic.

Vasa vasorum is a vascular ensemble with nutritional role for the vascular wall. It's has the origin and the end at the surface of the bloods vessels. In the thickness of the external and internal tunics it represents by a capillary circulatory network. At the level of the adventitia of the veins, arterial vessels and vessels with a larger size, with a similar structure with the veins, has been observed. At the level of the middle tunic was observed capillary vasa vasorum. The density of the capillaries is bigger to the external tunic and the capillaries are in a smaller number to the internal tunic. The vascular wall has an intense metabolism, so we can explain the nutrient supply with two sources: an external source (vasa vasorum) and an internal source (the blood that flows in the vessels). The spermatic veins collect the blood from the testis, epididymis and the scrotum. This veins form a network around the arteries with a known functional role. This intimate vascular relation from the spermatic cord explains the arterial vasa vasorum particularities moreover the venous particularities. The drainage of the testicular veins is different on the left side and on the right side. The discussions are centered on the tension of the vascular wall. Its growth has an important effect: the compression of the capillary vasa vasorum. We discuss, too, about the conditions that reduce the perfusion. The consequence of an insufficient nutritional supply is the functional modification illustrated by varicocele.