Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
  • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
  • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
  • A61C8/0054—Connecting devices for joining an upper structure with an implant member, e.g. spacers having a cylindrical implant connecting part
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
  • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
  • A61C8/0086—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools with shock absorbing means

Definitions

• the utility model relates to medicine, namely to orthopedic dentistry.
• the traditional methods of orthopedic treatment of patients with partial absence of teeth include prosthetics with fixed bridges, telescopic bridges, clasps, etc.
• An alternative method of treatment is the fixation of dental prostheses on osseointegrated implants. Therefore, the development of dental implants is currently being conducted from the standpoint of searching for bioplastic materials optimal for medical and technical characteristics for the manufacture of implants and improving the design of the dental implant itself.
• a dental implant for prosthetics comprising a root part made in the form of an oblong element with a blind hole, and a mobile base in the form of a rod inserted into the cavity of the blind hole, to the bottom of which one end of the elastic element placed in the cavity of the hole is attached, the other end of which is pressed against the end surface of the rod,
• the elastic element is made in the form of an elastic block of a polymeric material or alloy or in the form of a helical spring screwed into the bottom by a screw part a blind hole of the root part
• the rod on the side opposite to the supporting side on the elastic block is made with an attachment element of the orthopedic structure and is made cylindrical with a transverse a size exceeding the transverse dimension of the rod from the side resting on the elastic block, while the section of transition of the cylindrical part of the rod to the part resting on the elastic element is made in the form of a fragment of the second-order surface, and the wall of the blind hole in the area of contact with the surface of the
• This dental implant is not a monolithic, but a prefabricated structure, the strength of which is determined by the physical characteristics of not only the material from which it is made, but also by assembly, that is, the interconnections of the elements. Since the teeth are constantly subject to dynamic loads, the value of which sometimes exceeds the strength characteristics of the material from which the implant is made, the probability of destruction is not so much of any one element, but of the connection between them, since all three elements that make up the mobile base have a relative mobility and various dynamic loads. In the process of using the implant, there is a violation of the connection between the head of the mobile base and the elastic element. Such a picture is observed with an incorrect spatial arrangement of the implant. Another disadvantage is the inability of the spring to provide adequate resistance to chewing load, i.e. it is physically weak and is very easily compressed.
• the technical result of the proposed utility model is to improve the operational properties of the implant, increasing its reliability and durability. Achieving this result provides a reduction in critical loads on the bone and, as a result, a decrease in bone resorption around the implant.
• the dental implant for prosthetics containing the root part made in the form of an elongated cone-shaped element with a blind hole open on the base side and a mobile base in the form of a rod fixed in the root part inserted into the cavity of the blind hole protruding above the root part of the shaft head made with an attachment element of the orthopedic structure and spring-loaded relative to the part rod fixed in the root part
• the mobile base in the form of a rod is made in the form of a single part, in which the part of the rod fixed in the root part is made in the form of a screw head screwed into the root part and which is made with a conical protrusion for interacting with the counter surface in the wall of the blind hole of the root part
• the rod head is cylindrical and made with a blind hole with screw thread for installing a plug or attaching an orthopedic structure
• an elastic element made in the form of an oval ring or a toroidal element
• Figure 1 General view of the dental implant assembly with a partial cutaway
• figure 2 is a longitudinal section of a dental implant
• FIG. 3 is a section AA in FIG. 2;
• FIG. 5 is a side view of the mobile base of FIG. 3.
• a dental implant used for prosthetics of an artificial tooth is considered.
• this implant is performed with the function of damping (damping) the load on the tooth and correcting the spatial position of the denture in the mode of self-installation (self-positioning).
• issues related to the use of special materials, metals or alloys are not considered.
• Carbon-based materials do not have pathogenicity, do not cause pronounced uncompensated damage to tissue structures when implanted in bone defects. Pyrocarbon does not inhibit adaptive bone remodeling.
• the mobile base can be made of titanium materials or alloys that provide a sufficient range of elastic deformation for reversible compression of the elastic oval part by 0.2 mm with a million-strong cycle.
• a dental implant for dental prosthetics (Figs. 1 and 2), which contains the root portion 1, is made in the form of an oblong conical or cylindrical shape of an element with a blind hole (the external structure or shape of this element is not of interest and is not affected in the description , is a root-shaped implant, plays the same role as the root of the tooth, because its location should be similar - the root implant should be surrounded by bone tissue and should not protrude camping out under the gums).
• Blind hole made open from the base of the root part.
• the outer surface of the root part has radially directed protrusions or a helical spiral for the formation of fixation elements of the root part in the bone tissue.
• the mobile base is made in the form of a rod 2 fixed in the root part, inserted into the cavity of the blind hole with a protrusion above the root part of the head of the rod 3.
• a polyhedron 4 with a blind hole with a thread for fixing the orthopedic structure.
• the head of the rod 3 is cylindrical and spring-loaded relative to the part 5 of the rod fixed in the root part 1.
• the polyhedron 4 is used to fix the orthopedic structure (not shown).
• the mobile base in the form of a rod is made as a single part.
• the rod part 5 fixed in the root part 1 is made in the form of a screw head screwed into the root part.
• This part 5 of the rod above the screw section is made with a conical annular protrusion 7 for interaction with the counter conical wall (surface) in the blind hole of the root part.
• the rod is recessed into the root part until the conical surface of the annular protrusion 7 contacts the mating surface 8 of the wall of the root part, which leads to locking of the entire structure.
• the screw of the mobile element is an element of fixation of the latter in the implant. Twisting and twisting occurs through the polyhedron of the mobile base. In case of a fracture of the mobile element, the screw can be unscrewed for the conical base.
• the part of the rod is made in the form of an elastic element made in the form of an oval ring 9 or a toroidal shape, the long axis of the hole 10 of which is perpendicular to the longitudinal axis of the rod of the mobile base.
• the elastic element is made in the form of an elongated ring with a spherical outer surface. The thickness of the ring strongly affects the compression of the elastic element and can be different, depending on the implant location conditions: in the more stressed parts of the jaw it is thicker, in the less loaded parts it is thinner.
• the conical base, truncated along the vertical axis on both sides, under the elastic element has two functions: it prevents the screw of the mobile element from being unscrewed by fitting into the counter cone hole in the implant, and also, with the help of truncated faces, allows you to unscrew the screw when installing a special key in case of breakage of the elastic element.
• An annular recess 1 1 on the root part and a reciprocal recess 12 on the neck of the implant is designed to contain an insulating polymer ring (not shown).
• the ring protects against the penetration of microbes into the interior of the implant.
• An oval ring or toroidal element is located in the chamber 13 of the cavity of the root part 1.
• the walls of this chamber limit the movement of the ring in the radial direction.
• the elasticity is provided by deformation of the oval of the ring in the range of elastic characteristics of the material from which the rod is made.
• the walls of the root part are made in the form of a polyhedron for fixing the implant guide key.
• a dental implant is used as follows.
• An orthopedic structure is mounted on top of the rod and, for example, is screwed into the blind hole of the shaft with a thread and screw until the protrusion 7 contacts the mating conical surface of the blind hole of the root part.
• the load from the orthopedic design is transferred to the rod and the elastic element, and then to the mobile base, due to the fact that the elastic element is compressed, which leads to contact sliding and the elastic element of the rod is supported on the wall of the mobile base. This leads to a dispersal of the load. In this case, the transmission of dynamic forces at the sealing sites is excluded, since the rod is made integral and does not have separate parts connected to each other.

Landscapes

• Health & Medical Sciences (AREA)
• Oral & Maxillofacial Surgery (AREA)
• Orthopedic Medicine & Surgery (AREA)
• Dentistry (AREA)
• Epidemiology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Dental Prosthetics (AREA)
• Prostheses (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=49758511

Family Applications (1)

Country Status (1)

Cited By (1)

Citations (4)

• 2012
  • 2012-06-18 WO PCT/RU2012/000472 patent/WO2013187792A1/fr not_active Ceased

Patent Citations (4)

Similar Documents

Legal Events