[Compression resistance and creep of 2 high copper Mexican amalgam alloys]. / Resistencia a la compresión y escurrimiento de dos aleaciones mexicanas de amalgama con alto contenido de cobre.

Research on the resistance to compression and creeping in high-copper amalgam alloys is important, as it may serve as a basis for analyzing their properties, from which their clinical behavior may be verified. In this study, resistance to compression, as well as to creeping, was investigated in three different brands of high-copper amalgam alloys, for a period of one hour and then for seven days. Specimens of each alloy were prepared in compliance with Specification Number 1 set forth by the ADA.

[Diagnosis of orodentomaxillary disease in students with mixed dentition in the city of Toluca]. / Diagnóstico de morbilidad bucodentomaxilar en escolares con dentición mixta en el municipio de Toluca.

A study was undertaken on 1,474 school children of either sex, aged six to 12, from the community of Toluca, Mexico State, selected by dual-stage conglomerate sampling, both from rural and urban areas. Data registered included teeth with caries, lost teeth and filled cavities for permanent dentition, and teeth with caries, extracted or obturated teeth in the case of primary dentition. Periodontal health status was evaluated according to World Health Organization criteria, and conditions of occlusion were graded according to Angle's classification.