A dental post has fibre-reinforced material with substantially uniformly directed fibers and mountable in a tooth root canal for fixing a dental prosthetic structure on a tooth stump and a method for its fabrication.For improving the light conduction properties within the post, at least a fraction of the fibers conduct light, and includes post a tapered portion extending toward its second end. Some of the fibers extend from the first end of said post to the circumferential surface of the tapered portion.According to a fabrication method of the post a composite structure of uniform cross-section with substantially uniformly directed light conducting fibers in a pultrusion process. At least a portion of the circumferential surface of the composite structure is shaped to provide a tapered portion extending toward the second end of said composite structure.