Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

The pigmented injuries of the skin and oral mucosa are alterations that appear commonly at the dental clinic Due to their characteristics and different forms of presentation, their clinical diagnosis usually differs from the morphological study. Taking into consideration the clinical importance of some of these injuries, we proposed ourselves to make a retrospective review of the biopsy archives of the Pathology Department of the Stomatology Faculty from the clinical and morphological point of view during a period of 6 years (1998-2003). The search was directed to those biopsy indications of buccofacial pigmented injuries with their corresponding histopathological report in order to determine some clinical parameters, such as age, sex, localization and the correlation of the clinical histopathological diagnosis. A total of 155 biopsies of patients affected was selected. The results showed that the injuries predominating in the diagnosis were the nevuses (of cutaneous localization), the exogenous pigmentation, the lentigo and the melanoma with a distribution of 65.2 %, 29 %, 4.5 % and 1.3 %, respectively. Females were the most affected in each of the entities. The presentation according to age groups was variable. It was observed that the nevuses and the lentigo were more frequent among the young individuals aged 30-39 (25.7 % and 28.6 %, respectively), whereas the exogenous pigmentations were more common in the oral cavity of patients over 60 (26.7 %). A clinicohistopathological correlation was established and, this way, the clinical diagnosis was confirmed or rectified in every of the studied cases.

La miasis son infestaciones de vertebrados vivos por larvas de moscas que se nutren como parásitos. Frecuentemente, la miasis está relacionada con la pobreza extrema y la falta de higiene en países en desarrollo con climas calientes y húmedos. En esas circunstancias especificas, heridas abiertas y no tratadas, úlceras, tejidos necróticos y todos los orificios anatómicos son susceptibles a esta infección. El tratamiento incluye la remoción quirúrgica de todas las larvas y el soporte general del paciente. El objetivo de este trabajo es relatar un caso de miasis facial asociada con un carcinoma espinocelular en un paciente en estado terminal.

The present article is aimed at identifying the essential conceptual aspects of the contemporary pedagogical trends and approaches, focussing the analysis on traditional pedagogy, as well as on a historical and cultural approach. A comparison was made between both currents based on fundamental aspects, such as the professor-student relationship, the methodology used in teaching, the evaluation of learning and the social repercussion of each of these currents.A review of the literature existing in our environment during the last decades was made. It allowed to establish the positive aspects, the limitations to trends, and the importance to go deep into this interesting topic.

Se realizó un estudio clínico y radiográfico pre y posoperatorio en 4 pacientes con fracturas del suelo orbitario reparadas con hidroxiapatita HAP-200. En ninguno de los pacientes se encontró reacción adversa ante este material implantalógico y sí muy buena tolerancia y adaptabilidad, lo que nos reafirmó su alta biocompatibilidad, por lo que lo recomendamos en el tratamiento de esta afección.

The purpose of this work is to demonstrate the existence of inconsistencies in the number of received votes for President, Deputies and Municipal Representatives inthe Costa Rican elections from 1978 to 2002. The study underlines the discrepancies in the received votes for President and Deputies. For the elections of 2002 the analysisis by ‘Juntas’; for the elections of 1978 to 1998 by districts. Although our elections are well known for its high degree of purity, the inconsistencies found in our researchwork make us believe that the high degree of purity may be increased if additional controls are introduced within the ‘Juntas Receptoras de votos’.

The article establishes a series of social and political tendencies presents in the Costa Rican society of the last two decades that affect the electoral behavior of citizens. Thehappened main changes in the national elections of the 2002 are analyzed and establishes a comparison between the results of the feminine participation in the legislative and local level (by province) to illustrate the unequal effects of the application of the mechanism of the minimum quotas of feminine representation in the different political levels.

This paper analyzes changes in the political representation in local governments during two periods: 1998-2002 and 2002-2005. It was possible after processingdata about cancellation of local seats (in political parties and geographical paths), suministred by the Supreme Court of Elections.

It is shown how the sub-quotient constitutes a barrier that has produced in the last eight elections a parliament that concentrated the representation on the politicalparties that obtained the largest number of votes, discriminating against the weaker ones. If revoked the composition of the parliament will better represent the preferencesof voters. The distortion of the electoral preferences in the last eight elections reached its peak in the 2006 general elections. It is hypothesized that the legislativedisproportionality will set a favorable background for civil disturbance to arise.

This article describes the end of bipartidism in Costa Rica. The analysis is done bothgeographically and socially, based on presidential electoral returns of 1994, 1998 and2000, and the 2000 Population Census. The unit of analysis is the district, for thepolitical parties Unidad Social Cristiana (PUSC) y Liberación Nacional (PLN).

The following is a study of the economic and political power relationships (both legal and illegitimate ones) during the 1950-2005 period which have led to the currentcrisis in domestic solid waste management in Costa Rica. Additionally, its territorial coverage is taken into consideration (as policies have been drawn taking into accountGreat Metropolitan Area specificities but have been mechanically applied at the national level), as well as the various interests held by private groups and individualswho have benefited from them, the rights of citizens who have been affected (in spite of the management possibilities community organizations and the third sector have),and the harm brought upon credibility of State agencies and institutions.