32 results about "Tooth neck" patented technology

The invention discloses a design method and system of an individual healing abutment. The method comprises the following steps: establishing an oral 3D model by acquiring data of teeth and gums on various tooth positions of a plurality of patients, and saving the oral 3D model in a database; according to the oral 3D model in the database, acquiring the shapes and the sizes of tooth roots and tooth necks on the various tooth positions as well as the shapes and the sizes of junction surfaces of the tooth necks and the gums; and according to the shapes and the sizes of the tooth roots and the tooth necks on the various tooth positions as well as the shapes and the sizes of the junction surfaces of the tooth necks and the gums, determining the shape and the size of the bottom of a healing abutment corresponding to the various tooth positions, so that the shape and the size of the base of the healing abutment are identical to the shapes and the sizes of the junction surfaces of the tooth necks and the gums. By virtue of the healing abutment, tissue cuffs formed by the gums, same with that before tooth extraction, can be well matched with a prosthesis which is implanted in a later period, so that the abutment is in smooth transition with the prosthesis, and the problems of black triangle and stress on the abutment are avoided.

The invention discloses a multi-effect foldable cleaning brush for the implant tooth neck. The multi-effect foldable cleaning brush comprises brush bristles (1), a brush head (2), a brush handle connecting end (3) and a brush handle body end (4). The brush bristles (1) are embedded into the brush head (2), the brush handle connecting end (3) is connected with the brush head (2) and the brush handle body end (4), and the brush head (2) comprises an upper layer basic plate (21) and a lower layer basic plate (22). The upper layer basic plate (21) and the lower layer basic plate (22) are connected or separated through a bottom connecting body (23), a middle connecting body (24) and a head connecting body (25) arranged inside so that the cleaning brush can be unfolded or folded to be used. Through unfolding or folding the upper layer basic plate and the lower layer basic plate of the brush head for usage, and designing the brush bristles to be of a special structure, the neck, the lingual surface and the proximal surface of an implant tooth and dental plaque and mild scales on the surface of the tongue can be more effectively cleaned at multiple angles, the periodontal health of the implant tooth is maintained, and the peri-implantitis is effectively prevented.

The invention relates to a tooth cleaning kit, which consists of a work tip unit, a polishing unit and a fixed frame unit. The work tip unit includes supragingival tooth cleaning work tip, a shallow periodontal tooth cleaning work tip and a deep periodontal tooth cleaning work tip; the end face of the supragingival tooth cleaning work tip head is a beveled end face, and the end faces of the shallow periodontal tooth cleaning work tip and the deep periodontal tooth cleaning work tip are both tips; during use, firstly the supragingival tooth cleaning work tip is utilized to remove supragingival and tooth neck calculuses, dental plaques and dental cusp hard matters; then the shallow periodontal tooth cleaning work tip is employed to eliminate shallow periodontal calculuses and dental plaques rapidly and thoroughly; the deep periodontal tooth cleaning work tip is utilized to remove periodontal deep calculuses; and then a polish brush is employed to conduct preliminary polishing on the cleaned tooth faces, and a prophy cup is adopted for fine polishing. The tooth cleaning kit provided by the invention realizes leveling and polishing of tooth surfaces while rapidly and thoroughly cleaning teeth.

The invention relates to a method for designing and manufacturing a shoulder-less window-opening veneer with incisal positioning, which comprises the following steps: 1) designing a veneer wax pattern on a shoulderless window-opening veneer preparation model, and computer-aided design; 2. ) The gingival edge of the veneer wax-up is designed to be a blade-like edge of 30-60 degrees; 3) The incisal edge of the veneer wax-up is designed to be in the shape of docking with the incisal end of the natural tooth; 4) The incisal edge of the veneer wax-up is third-class According to the position, design two hook-shaped structures covering the incisal ends of the teeth; 5) Use casting, CNC cutting or 3D printing methods to print wax patterns, or use CNC cutting or 3D printing methods to directly make veneers; 6) Use hook-shaped structures As a positioning termination, the finished veneer is bonded to the tooth, and then the hook structure is ground off and polished. The invention can significantly reduce the preparation amount of the tooth neck in the teeth veneer restoration, and improve the final positioning accuracy of the veneer on the surface of the tooth preparation.

The invention discloses zipper teeth of a novel firmly-meshed zipper. Each zipper tooth comprises a tooth head, a tooth neck and a tooth tail, wherein the tooth head, the tooth neck and the tooth tail are sequentially connected. For each tooth, the tooth head is provided with an outer tooth head and an inner tooth head, the tooth neck is provided with an outer tooth neck and an inner tooth neck, the tooth tail is provided with an outer tooth tail and an inner tooth tail, the outer tooth head, the outer tooth neck and the outer tooth tail form an outer tooth, the inner tooth head, the inner tooth neck and the inner tooth tail form an inner tooth, and the outer tooth head is diminished from inside to outside. The invention further discloses the zipper with the zipper teeth. According to the zipper teeth and the zipper with the zipper teeth, due to the fact that each outer tooth neck is diminished from inside to outside, a recession space can be formed when the zipper is closed and bends outwards, the outer teeth will not be abutted, disturbing force making the meshed zipper teeth disengage can be prevented, and therefore meshing stability of the zipper in an outward-bending state can be improved. Due to the fact that each outer tooth neck is diminished from inside to outside, the closed zipper can bend outwards more easily, the radius of the bending portion is small, and the closed zipper can be smoother, more fitted and suitable for high-grade products like high-grade clothes.