Abstract:
PURPOSE: An expansion-type implant is provided to be easily manufactured owing to a simple structure, be able to be fixed immediately, and prevent outer materials from tooth-abutment from being invaded by using a taper sealing. CONSTITUTION: The expansion-type implant includes: a tooth-abutment(110) comprised of an abutment head to support an artificial tooth, a tapered neck(116), and a screw body(120) toward a direction of fixture length in one body; a fixture(50) which has a neck collecting unit to become a taper sealing thereon and a piercing hole expanded to the lower end by being connected with the neck collecting unit therein, and forms at least one slit from a predetermined position of a longitudinal direction to the lower end; and an expanding nut which has an internal diameter of the piercing hole on the fixture, is screw-connected with the screw body by having a screw groove acceptable for the screw body, and is moved by rotation of the screw body.
Abstract:
치아가 있는 포유류 동물 배아의 턱뼈원기 부위나 구강상피를 분리 채취하는 단계; 배아의 분리부분에 성장인자나 필요한 조절인자를 삽입 또는 혼합하는 단계; 배아의 분리부분을 시험관내(in vitro)에서 3차원적 기관배양을 실시하는 단계; 배아의 분리부분을 생체 내에서 기관배양을 실시하는 단계; 치배 부위의 탁뼈원기를 다른 배아의 치아가 없는 턱뼈원기 부위에 이식한 후 기관 배양을 실시하여 치아를 포함한 배양턱뼈를 재건하는 단계; 배양턱뼈 부위를 결손된 턱뼈 부위로 이식하는 단계를 포함하는 생체 공학적 턱뼈 및 치아 재건 방법이 개시된다. 생체공학, 배양치아, 배양턱뼈, 임플란트, 바이오 장기
Abstract:
인공치아를 지지하는 치아받침대와 고정체가 일체로 이루어지고, 고정체의 내부에 관통공이 형성되는 치아받침 일체형 고정체; 관통공내에 삽입가능한 헤드 및 나사몸체가 일체로 형성되는 이송유닛; 및 나사몸체에 나사 결합되는 적어도 하나 이상의 가압너트를 포함하며, 고정체의 측벽에는 일부가 고정체와 분리되지 않도록 절개된 팽창돌기가 형성되고, 팽창돌기의 내측은 돌출되어 팽윤부를 구성하여 나사몸체의 회전에 의해 가압너트가 이동함에 따라 가압너트가 팽윤부를 가압하여 팽창돌기가 외측으로 팽창되어 고정체 어느 부위에서도 팽창이 되고 다중으로 팽창되며, 위치조절이 가능한 다중팽창형 임플란트가 개시된다. 임플란트, 위치조절 팽창, 다중팽창,
Abstract:
PURPOSE: Provided are a bioabsorbing nerve conduit comprising, as an active material, toothapatite, polymer material or chitosan, which is a bioabsorbing ceramic, and a method for manufacturing the same. CONSTITUTION: The bioabsorbing nerve conduit consists of tube components or bioabsorbing polymer materials selected from the group consisting of collagen, alginate and ceramic, wherein coating layer is positioned inside the tube. The tube components further comprise polymer material. The ceramic is selected from the group consisting of toothapatite and bio-apatite. The polymer material is at least one selected from the group consisting of PHBV(poly-hydroxybutyrate-co-hydroxyvalerate), polyglycolic acid(PGA), polylactic acid(PLA), PLLA(poly(L-lactic acid)), polylactic-glycolic acid(PLGA), and chitosan.
Abstract:
PURPOSE: Provided is a bioabsorptive ceramic-polymer complex material for tissue engineering with teeth apatite and polymer used which mixes teeth apatite, polymer for tissue engineering and solvent to keep porosity on the surface and section so that it improves humidity absorption rate. CONSTITUTION: The production process of the bioabsorptive ceramic-polymer complex material for tissue engineering with teeth apatite and polymer used comprises the steps of: (i) extracting an inorganic material from teeth of human or animals and crushing them to prepare teeth apatite; (ii) selecting one material from PGA, PLA, PLLA, PLGA, chitosan and PHBV as bioabsorptive polymer; (iii) selecting one solvent from methylene chloride, chloroform, DMSO and week acid; and (iv) mixing 60-90wt% of bioabsorptive polymer and 10-40wt% of teeth apatite under the selected solvent to produce a ceramic-polymer complex material.