Abstract: A light-transmittable composite tube includes a plurality of optical fibers and a plastic material. Each of the optical fibers has a light entrance end and a light exit end. Light enters the light entrance end and emits from the light exit end. The plastic material is set around and combined with side surfaces of the optical fibers in a composite form to fix relative positions of the optical fibers to form a tubular structure, serving as a fiber/plastic composite light guide tube. The fiber/plastic composite light guide tube has a light receiving end opening and a light emitting end opening, wherein the light exit ends of the fibers are arranged to distribute in the light emitting end opening and face outward of the light emitting end opening.

Abstract: A fiber abutment material and structure of dental implant includes: a fiber resin abutment equipped with plural fiber center shafts, such as glass fiber center shaft, carbon fiber center shaft, quartz optical fiber center shaft, or glass fiber optics center shaft, in which the single, dual-layer or multi-layer fiber multiply enhances the intensity, and the fiber resin abutment with grind ability is easily modified on-site for the dentist, is equipped with considerable fibers with tensile strength higher than that of titanium or zirconia (ceramic), because of the fiber structure elasticity similar to natural tooth to be shock absorbed, to prevent the bone from hurting and decrease the damage to the base.