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

En el caminar de la ciencia y del desarrollo sostenible uno puede encontrar maestros que marcan nuestras vidas. Sin duda, el Dr. Juan Aguirre Gonzalez fue mucho más que un maestro para gran cantidad de investigadores que tuvieron el gusto de conocerlo. El Comité Editorial de Ecología y Desarrollo Sostenible ha decidido dedicar este primer número al Maestro Aguirre, un investigador comprometido, un apasionado del desarrollo sostenible un amigo. Para hacer esta dedicatoria hemos elegido a la Dra. Sindy Chaves Noguera, quien fue su compañera de investigación durante varios años y puede dar fe de la calidad de ser humano que fue.  Gracias Maestro Aguirre!!!

Gracias por formar parte de Ecología y Desarrollo Sostenible, Una revista para científicos visionarios que trabajan por la generación de un mundo más sostenible

This research was carried out with the aim to determine the main systemic factors that cause edentulismin patients attending the Dental Clinic, in order to enhance patient education concerning the relationshipbetween toothloss and with general health, as well as the causes and consequences of edentulism. For this study,a sample of 954 records was acquired from the last four months of the year 2017. These records were evaluatedto obtain a number of 108 patients with systemic factors, the overall participants for this study.

Introduction: An experimental study was carried out to compare the effect of the manual system and the rotarysystem on the conformation of curved conduits. Methodology: A sample of 40 mesial roots of lower first molarswas randomized into two equal groups: group manual system of K-files and group rotary system FGK Race®.The radius of the final curvature vs. the initial curvature was compared using the Autocat 2015 program. Thet-test with a significance of 0.05 was used. Results: The curvature radius varied significantly for both the manualsystem and the rotary FGK Race® (p = 0.0001 and p = 0.0013, respectively). In addition, the manual systemproduced greater variation in the radius of the curvature when compared to the rotary system 2.23mm vs. 1.27mmrespectively; p = 0.13. Conclusion: Both systems produced modification on the conformation of the conduits of themesial roots; however, in the comparison between both systems said differences were not significant.

Introduction: Currently there are different types of materials for the preparation of base plates, as aprocedure for the preparation of dental prostheses. The option of the thermoforming sheet, which is currentlyof little use, as well as, of self-curing acrylic, a material of daily use in consultation. Objective: To comparethe techniques for making base plates, to determine which of the two provide qualities such as shorterprocessing time and less deformity. Materials and methods: 20 models of gypsum totally edentulous wereselected for convenience, to which processing time is recorded and the same laboratory tests are applied.Results: The thermoformed base plates have an average time of 7 minutes, while the self-polymerized acrylicbase plates have an average time of 29 minutes, based on the laboratory analysis the least deformation occursin the acrylic base plate of autopolimerization. Conclusion: The time of preparation of the thermoformablebase plate is less, while the deformation is greater compared to the base plate of self-polymerizatíon, the latterin turn, has a longer processing time than the thermoformable base plate.

Objective: To evaluate by quantification of halos of inhibition, the antibacterial effect of the shell and pulp ofcapulí, (Prunus serotina capuli) and mortiño (Vaccinium floribundum), on strains of Streptococcus mutans(ATCC 35668) at 24 and 48 hours, compared with dehydrated cranberry and chlorhexidine gluconate at 0,12%.Materials and methods: in vitro cross-sectional experimental study, 15 petri dishes were used to plant 20 ul of theevaluated substances were placed in each box, mortiño, and capuli, in pulp and in shell, dehydrated cranberry and0,12% chlorhexidine gluconate as control, distributed at an equidistant distance. The analysis of the antibacterialeffect was performed by measuring the zone of inhibition in a time of 24 and 48 hours of incubation, the dataobtained were statistically analyzed in the SPSS 22 program by parametric and Kruskal Wallis tests. Results: therewas no significant statistical difference between the analyzed variables, capuli and mortiño, both in skin and pulp and chlorhexidine used as control, in the two evaluated periods of time (p=>0,05). Conclusions: the red fruitsanalyzed have an antibacterial effect 24 and 48 hours, which is related to its antioxidant capacity.

The certification of the quality in the university programsbecame an imperious necessity for the CostaRican society.Through the law of the Republic, the National Systemfor the Accreditation of Higher Education (SINAES)has been created, which also has an instrumental legalpersonality, as dictated by the Attorney General’sOffice.The initial combination of the efforts of four publicand four private universities, (and Universidad Latinade Costa Rica being among these founders ofSINAES)

A lot of the patients present primary headaches and most of the time, they are not connected in the general practiceof dentistry, it´s common that the patient relates the pain to the symptom of TMJ referral pain, or another dentalpain non odontogenic, muscular or others.

Reseña del libro  «Se ha ocupado el kilómetro 6... » (Contestación a Remarque)

Fernando Aramburu (San Sebastián, 1959) exhibits in Patria (2016) his version of the story of more than thirty years of life in Euskal Herrí­a, and his personal position about the presence and action of ETA in the life of the community. Through the narrated events he proposes other forms of readability of the comunitye, tentatively orienting a new historical and social conscience that leaves the violence definitively behind. The author acknowledges that "the story about ETA's violence does not yet exist [...] is still to be built and can not be done by just one person"; for which, he considers his work "as a contribution, as one more piece of the mosaic of the story" (Aramburu in Sainz Borgo, 2016).