Effects of alprazolam on cellular immune response to surgical stress in mice.

Mice exposed to surgical stress induced by laparotomy and treated with chronic alprazolam (0.5-2 mg/kg) showed a dose-dependent reduction in stress-induced suppression of the natural killer (NK) cell activity. These immunoenhancing effects of alprazolam were more intense when it administered before the surgery was performed.

[Morphology of cracks in enamel surface produced experimentally using high and low temperature]. / Morfologia de las grietas en la superficie del esmalte producidas experimentalmente mediante bajas y altas temperaturas.

A scanning electron microscope study was made to study the morphological changes in the human enamel surface produced by low and high temperatures. Cracked dental enamel was observed when the teeth were exposed at low and high temperatures. When the time of exposition was increased, there are more enamel cracks which may be considered as enamel fractures.

[Scanning electron microscope study of unerupted enamel surface in adult patients]. / Estudio con microscopia electrónica de barrido de la superficie del esmalte no erupcionado en pacientes adultos.

We have undertaken a scanning electron microscope study of the enamel surface of the third molar in adult patients. The enamel surface are partially covered by a thin cuticle. The arrangement of the enamel prisms was clearly observed in the basal region of the cusps.

[Scanning electron microscope study of dentin treated with sodium N-monochloro-DL2-aminobutyrate (NMAB)]. / Estudio al microscopio electrónico de barrido de la dentina tratada con N-monocloro-DL2-aminobutirato sódico (NMAB).

This paper report a scanning electron microscope study of the dentinal surface after treatment with sodium N-monochloro-DL2-aminobutyrate (NMAB). The carious cavity shows a rugous and irregular surface. There are detaching plates of the dentin dissolved by the NMAB. At high magnification the compact dentin and the detaching plates show a acid-etched surface.

[A case of appendicular supplementary root with external root resorption]. / Raíz supernumeraria con reabsorción radicular externa. Caso clinico.

The case of a lateral maxillary incisor with a supplementary root fractured by external root resorption, is presented. The role played for the periodontal disease is shown in the clinical and radiographic achievements, and their implications in the pulpal disease. Endodontic therapy was performed and the diagnosis confirmed in the specimen histological research.

[Case of Gorlin syndrome]. / A propósito de un caso de "sindrome de Gorlin".

In this paper we report a Gorlin's syndrome in a patient, who was first diagnosed as a case of a large odontogenic keratocyst. Posterior analysis demonstrate the presence of other keratocyst in the maxilla and in the mandible, as well as lumbar scoliosis, lack and malformation of ribs, calcification of the brain sickle and folicles of 8 mm of diameter in the right ovary. The possible presence of nevoid basal cell carcinomas will be also considered.

Analysis of the area and length of masticatory cycles in male and female subjects.

It is difficult to determine the existence of a normal or physiological masticatory cycle, because there exists great individual diversity. This study presents some data about two parameters of masticatory cycles according to the frontal plane, i.e. the area and length of right-sided and left-sided cycles in a group of 30 young people, 18 women and 12 men. For our study the Myotronics K6-1 kinesiograph was used. It registers the magnetic field and allows us to obtain graphic recordings of the jaw movement in the three space planes. Other authors have analysed these parameters, but none of those reviewed provides information about the distribution to each side or according to the gender of sampling subjects selected for the analysis. We have tried to describe the normal morphology of the masticatory cycles and, also, establish a reference so as to provide help in the diagnosis of the functional pathology of the masticatory system.