The invention relates to a dental product intended to be employed as a corono-radicular device, in dentistry. According to the invention, the product is a glass fibre-reinforced composite comprising 50...80% glass fibres having a density of 2400 tex and the filament diameter of 27 &mu m, an organic resin of the dimethacrylic monomer type and, possibly, a radio-opaque inorganic filler of the zirconium oxide type.