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Copyright of Journal of Sport & Health Research is the property of Journal of Sport & Health Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Telos is the property of Revista Telos and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Chilena de Cirugia is the property of Sociedad de Cirujanos de Chile and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Teeth development results from a complicated interaction between oral epithelium and underlying mesenchematic tissue during odontogenesis. Abnormal interaction between this tissues could result in development and eruption of an ectopical, anomalous teeth or with an anatomical variation. This report shows three cases of teeth with anatomical variations at root and pulp canal in mandibular canine and bicuspid, and maxillary first bicuspid. Diagnosis of these cases was performed through radiographical analysis. Mandibular canine and bicuspid shown two root and two pulp canals, maxillary first bicuspid presented three roots and three pulp canals. Considering that maxilar tooth showed caries closer to pulp chamber, patient was derived to an endodontic specialist to perform an endodontic treatment and rehabilitation. Idealizing root canal as a simple and invariable structure is a mistake. Clinicians always ought to take into consideration potential anatomical variations in teeth, especially in those that require endodontic treatments or any kind of procedure inside root canal system. Timely and adequate indication of imagenological complementary exams allow an adequate diagnosis of anatomical variations that will decrease chances of accidents during treatment. [ABSTRACT FROM AUTHOR]

Third molars are the teeth with the highest variation of shape, size, number and position. Fifty five molars were extracted from patients of Temuco, Chile, which were classified by age, gender and location jaw. The following parameters were measured: vestibular-palatine diameter (VP), mesial-distal (MD) diameter, coronary height (C-O), root length and total length. Additionally, number of roots and cusps were quantified for each molar identifying those with abnormal molar shape. The data were statistically analyzed and tabulated. The results showed that upper molars have higher total length than lower ones, predominating those with a one fused root. Regarding to crown shape, there was a predominance of tricuspid shape prevailing V-P diameter for upper third molars and tetracuspid for lower, noting M-D diameter. Coronary length was higher for upper molars, but root length was higher for lower molars than upper ones. [ABSTRACT FROM AUTHOR]

Copyright of Nefrologia is the property of Revista Nefrologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This article analyzes the impact of urban spatial structure (traffic flows, land-use mix, and socioeconomic characteristics) on the frequency of traffic accidents in Tijuana, especially those classified as car crashes. We used a spatial-analysis methodology, and we estimated a negative binomial regression model. The accident database was taken at the census-tract level, based on information from Tijuana's Dirección de Seguridad Pública (Public Safety Office), the Population Census (INEGI, 2000) and the Economic Census (INEGI, 2004). Findings showed that the proxy variables for traffic flows, land use by businesses and services, and the proportion of population with incomes higher than five minimum wages are statistically significant in explaining a higher frequency of traffic accidents. In contrast, variables like population density and industrial land use are statistically significant for a lower frequency of car crashes. These findings could help to design public policies aimed at reducing the number of traffic accidents. [ABSTRACT FROM AUTHOR]