[Colorimetric and opacity percentage study of dental restorative resins]. / Estudio colorimétrico y de porcentaje de opacidad en resinas dentales de restauración.

A colorimetric and opacity percentage study was carried out to compare experimental prototypes of resin at different die and additive concentrations with commercial prototypes. A simple and reproducible method was used. Through this study the optimum die and optical brightener formulas for a new dental resin were found and compared with available commercial dental resins in the national market.

[Physical behavior of 5 autopolymerizing dental resins]. / Estudio del comportamiento fisico de cinco resinas dentales autopolimerizables.

The Tests described in the American Dental Association Standard No. 27 were carried out with five commercial dental resins available in mexican market. These are: Adaptic, Concise, Miradapt, Degufill and Finesse. Two of them are of the macrofilled type (II), one is of the hybrid type (mix of macro and micro particles; type II) and two of the microfilled type (I). All the resins tested met satisfactorily the specifications of the A.D.A. standard No. 27 for dental componsed resins, according with their classification.