Rigid special-shaped micro-structural fiber rod used in dentistry

Abstract

The invention discloses a rigid special-shaped micro-structural fiber rod used in dentistry. A rod body comprises a round-rod-zone rod body and a deformation-zone rod body, and the deformation-zone rod body at least undergoes folding once. The cross section or transverse plane of the deformation-zone rod body can be crescent, oval, square or rectangular, orthogonal, circular, etc., and can be a complex of a plurality of special shapes. The fiber rod provided in the invention overcomes disadvantages of optical fiber bundles used in dental treatment at present and has the characteristics of adaptability to assembling of complex effective spaces, convenient operation, uneasy breaking, a compact and poreless transverse plane, high light transmission efficiency, etc.

Description

technical field [0001] The invention relates to a dental optical fiber lighting device, in particular to a dental rigid special-shaped microstructure optical fiber rod. Background technique [0002] Dental treatment lighting is usually long-distance (≥600cm), wide bright-field (16-18cm×6-8cm) halogen cold light lighting. Because the light source is outside the mouth and the light is not concentrated, when performing fine treatment on teeth, It is difficult to eliminate the shadows in the working area caused by the projection of the treatment equipment, which affects the treatment effect and quality. For this reason, in the 1990s, the American MDT company first developed the optical fiber dental treatment instrument, and applied the optical fiber lighting system to the dental treatment instrument, which can directly send the light to the inside of the oral cavity and to the working point of the working area, so that the operating field of vision It is clearer and brighter, r...

AI Technical Summary

Problems solved by technology

Although the application of the above two optical fiber bundles has achieved the main purpose of lighting, due to its own characteristics, there are still the following defects when used: ① Due to the complex optical fiber Working gas pipelines, atomizing gas pipelines, cooling water pipelines, and power lines, etc., the assembly of optical fiber bundles needs to face complex space cavities. Because the diameter of the optical fiber single filament is thin (diameter ≤ 50um), it is soft and easy to break, so the assembly is difficult.

②Because both ends of the optical fiber bundle are dipped in epoxy, there are microscopic gaps on the end surface. During treatment, blood will enter the optical fiber bundle due to capillary phenomenon. After long-term use, the hemoglobin in the blood will affect the lighting effect and distort the image , and the blood and water in the microholes on the end face of the fiber optic bundle can easily cause cross-infection

③ Due to fiber gaps and glue seams, the convergence rate of optical fibers is not high, and the optical transmission efficiency is not high

④The bending angle of the light-emitting part of the optical fiber bundle is large (≥110°), and the "neck extension" is short (≤1-2mm), making it difficult to manufacture and polish the optical fiber bundle

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