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    DUST FOR CALCIUM PHOSPHATE-BASED HARDENED MATERIAL
    62.
    发明专利
    DUST FOR CALCIUM PHOSPHATE-BASED HARDENED MATERIAL 失效

    公开(公告)号：JPH07277790A

    公开(公告)日：1995-10-24

    申请号：JP7184394

    申请日：1994-04-11

    申请人： ASAHI OPTICAL CO LTD ,  NAT INST RES INORGANIC MAT

    发明人： SHIGENO KEIKO ,  KADOMA HIDEKI

    IPC分类号： A61L27/00 ,  A61K6/838 ,  C04B12/02 ,  A61K6/033

    摘要： PURPOSE:To obtain dust for a hardened material having a short hardening time, having a pH in a neutral range, maintaining high strength until formation of new bone, comprising tricalcium alpha-phosphate, tetracalcium phosphate and calcium hydrogenphosphate as main components. CONSTITUTION:Tricalcium alpha-phosphate is blended with tetracalcium phosphate and calcium hydrogenphosphate as main components in the ratio of Ca/P of 1.40-1.80 to give the objective dust for a hardened material. The dust can be mixed with an X-ray contrast medium, an antimicrobial agent, etc.

    OSTEOGENESIS MATERIAL
    64.
    发明专利
    OSTEOGENESIS MATERIAL 失效

    公开(公告)号：JPH07112023A

    公开(公告)日：1995-05-02

    申请号：JP26201493

    申请日：1993-10-20

    申请人： UNIV MATSUMOTO SHIKA

    发明人： ITO MITSUO

    IPC分类号： A61L27/00 ,  A61K6/027 ,  A61K6/838 ,  C04B28/34 ,  A61K6/033

    摘要： PURPOSE:To generate in an early period cells and blood vessels into the osteogenesis material formed obtd. by intimately mixing a chitosansol with a mixture composed of oxide powder and inorg. for the oxide powder and hydroxy apatite, animal bones, etc., for the inorg. powder. CONSTITUTION:This osteogenesis material is useful as a filler and supply material used for root canal filling, bone supply, fixing of pyorrhea teeth, etc., in the field of dentistry or orthopedics and includes the mixture composed of the oxide powder and the inorg. powder and includes the chitosan sol kneaded together with this mixture. The calcium silicate, calcium oxide and magnesium oxide are used as the oxide powder. At least one among hydroxy apatite, animal bones, alpha type tricalcium phosphate, and beta type tricalcium phosphate are used as the inorg. powder. As a result, the time when the osteogenesis material decays within the living body is freely controlled and the cells and blood vessels are generated in the osteogenesis material in the early period.

    INTRAOSSEOUS IMPLANT
    65.
    发明专利
    INTRAOSSEOUS IMPLANT 失效

    公开(公告)号：JPH07112000A

    公开(公告)日：1995-05-02

    申请号：JP26143793

    申请日：1993-10-20

    申请人： NIKON CORP

    发明人： MOCHIDA MASAAKI

    IPC分类号： A61L27/00 ,  A61F2/28 ,  A61K6/838 ,  A61K6/033

    摘要： PURPOSE:To provide a screw-type implant by using which good implantation can be performed by means of direct implantation even when a bone is hard. CONSTITUTION:In a cylinder-type intraosseous implant consisting of a collar part 1 and a main body part 2 provided with a screw below it, the intraosseous implant has the height h of a thread of 0.2-0.4mm, the pitch P of the thread of 0.8-1.7mm and the angle theta formed by a straight line connecting the top of the thread or the lowermost point of the top side with the lowermost point of the bottom side of the thread and the bottom side of the thread of at least 50 and smaller than 90 deg..