5 results about "Fiber posts" patented technology

A method of installing a fiber post for a post and core dental restoration uses a fiber post system which has a plurality of fiber posts having at least two distinct diameters for the fiber posts and at least two preformed fiber post lengths for the fiber posts. Each fiber post containing a visible depth marker indicative of where the post should be placed above and below root orifice, whereby the fiber post selected is configured to be based upon the root length of the specific tooth obturated, yielding proper post space preparation apically for cementation and coronally for foundational core build up. The resulting implanted post eliminates or minimizes post manipulation during tooth preparation to create a mono-block of core material around the post during cementation and build up resulting in no disruption of either bond during preparation.

The application discloses a detachable digital guide plate for assisting fiber post and resin core repair and a manufacturing method. The detachable digital guide plate comprises a base guide plate and a post core guide plate assembled through a mortise and tenon joint structure. The guide plate is manufactured by using digital technology, fully considering the complexity and individual differences of the root canal morphology of natural teeth, and setting the post core position with the expected repair effect as the target, effectively assisting the accurate positioning and forming of the post core in the tooth defect repair, the fiber post bonding and the resin nucleation, especially suitable for the complex repair treatment of the multi-abutment row joint crown or fixed bridge. Not only can the guide plate assist the accurate positioning and bonding of the fiber post, but also can control the nucleation space position and shape of each post core, effectively assist the multi-abutment to obtain the common positioning channel, reduce the clinical operation difficulty, improve the operation accuracy and the quality of the oral repair treatment, and reduce the tooth preparation time of the clinician at the chair.

The utility model discloses an epoxy asphalt concrete bridge deck pavement structure which comprises a bridge deck steel plate, a three-dimensional drainage transition layer, an epoxy asphalt bonding layer and an epoxy asphalt concrete layer which are sequentially arranged from bottom to top. By means of the three-dimensional drainage transition layer formed by the transverse corrugated steel plates and the vertical permeable fiber columns, efficient drainage is achieved, accumulated water on the bridge deck is effectively prevented from permeating, and by means of a mechanical anchoring system formed by the inverted-T-shaped anchoring parts and the perforated steel plate net, interlayer connection strength is enhanced, stability of a pavement structure is improved, and the pavement structure is more stable. By adding the nano silicon dioxide modified transition layer, the interface bonding force is further improved, so that the pavement system is firmer and more durable, strong bearing capacity, good durability and excellent driving performance of the bridge deck are ensured, and the problems that the traditional bridge deck pavement waterproof depends on the compactness of the material, but water is easy to permeate to cause delamination and influence the performance, the steel screen welding and fixing efficiency is low, and the service life is short are solved. The corrosion is accelerated; and the service life is shortened.

A method of installing a fiber post for a post and core dental restoration uses a fiber post system which has a plurality of fiber posts having at least two distinct diameters for the fiber posts and at least two preformed fiber post lengths for the fiber posts. Each fiber post containing a visible depth marker indicative of where the post should be placed above and below root orifice, whereby the fiber post selected is configured to be based upon the root length of the specific tooth obturated, yielding proper post space preparation apically for cementation and coronally for foundational core build up. The resulting implanted post eliminates or minimizes post manipulation during tooth preparation to create a mono-block of core material around the post during cementation and build up resulting in no disruption of either bond during preparation.

This invention relates to the field of fiber needle punching technology, specifically disclosing a high-efficiency carding and needle punching device for basalt fibers, comprising a loosening and feeding mechanism, a pre-coiling mechanism, a carding and web-forming mechanism, a cross-laying mechanism, and a needle punching and consolidation mechanism arranged sequentially. This invention uses hookless needles, effectively eliminating bending stress sources. When the needle penetrates the fiber web at high speed, the micro-rough structure on the needle surface generates static friction with the fibers, dragging a portion of the fibers along the needle punching direction into the fiber web. When the needle withdraws, because the frictional resistance between the fiber and the surrounding fiber web is greater than the frictional force between the needle and the fiber, the fiber is retained inside, forming vertical fiber columns, achieving entanglement and solidification. Since the fibers are only subjected to tensile and shear stress throughout the process, they do not undergo rapid bending, thereby effectively reducing the fiber breakage rate.