Device for fixation of removable dentures on implant

 

The invention relates to medicine, in particular to the dentist, can be used for fixation of removable prosthesis on the implant. The technical result of the invention to provide locking element removable prosthesis directly on the implant with the best individual adjustable grip force. Device for fixation of removable prosthesis on the implant contains a castle, made in the form of housing, on the inner surface of which is a bed for installation Espanola ring Nickel-titanium shape memory. The diameter of the ring is adjustable. On the outer surface of the housing includes retention elements for better adhesion with the base of the denture. 2 Il.

The invention relates to medicine, in particular to the dentist, to the fixation of the denture to the implant.

Quality orthopedic treatment using dental implants and the subsequent prosthesis on the basis of a removable prosthesis is determined by the fixation, stabilization due to the importance of redistribution of chewing pressure on the implant and tissue prosthetic bed.

Among the existing designs of locking elements most the material fatigue during repeated deformation, aesthetic imperfection, irrational distribution of masticatory load [1].

Among bestemming fastening attachments with preparations of polymeric materials do not remain unresponsive to the action of aggressive food, medicinal agents, abrasive agents, reduce the retention force and break fixation [2].

Other systems involve the communication of attachmen with coronal structures.

The lack of a telescopic system is rigidity and unregulated retention strength of this design.

The aim of the invention is to develop a locking element removable prosthesis directly on the implant optimal, individually adjustable grip force.

Given the above, we felt it necessary find a new approach to the system of fixation of removable prosthesis directly on intraosseous implant using a material with predetermined properties and combining wear-resistant options with high elasticity and high elasticity.

We have proposed and fabricated locking system internal surface congruent with a fixed absorber (implant, damper, screw and main body fixing system is haunted items (A) to improve adhesion with the base of the denture. On the inner surface of the main body is a bed (In) to install Espanola rings (Fig.2) Nickel-titanium (if necessary diameter Espanola ring of TiNi regulated or gespanne ring can be replaced).

Alloy based on titanium nickelide has unique properties: 1. the shape memory effect (termovosstanovleniyu when the temperature changes); 2. sverkhelastichnosti (shape recovery upon removal of the load that caused the change); 3. biochemical compatibility (no toxic reactions, resistance to disinfection and sterilization); 4. biomechanical compatibility (the unity of the laws of the mechanical behavior of materials and biological tissues).

Clinical efficacy of orthotic treatment was assessed by the changes in the dynamics (3, 6, 12 months) indicators such as mobility of the implant, the state of the tissue prosthetic bed, the retention force of the prosthesis.

Radiographic study of implants, which has acted as support dentures with fixation on the attachments with the element of TiNi, during 1 year of observation showed no change in bone density. When determining the retention force of the prosthesis during kontrolnye ring of TiNi allows you to schedule the retention force individually, depending on the specific clinical situation, and sverkhelastichnosti alloy of TiNi protects the implant overload.

Example. Patient K., 63. He complained of poor fixation of complete removable denture on the lower jaw. Considering the General and local indication on the lower jaw in the area of 46, was introduced plate implant. 6 months after the positive test results was screwed to the abutment, then screw fixed identical to the absorber. After fitting the lock on the shock absorber with job retention force 4H prints were removed and made removable denture on the lower jaw.

Examination after 3 months: the complaint was absent, it was noted good fixation and stabilization of the prosthesis, full occlusal contact between the teeth of the upper and lower jaws. The locking element is in good condition. On the x-ray pathological foci of inflammation and sites of bone resorption around the implants was not detected.

Inspection after 6 months: the complaint was absent, the patient noted a good fixation and aesthetics of the prosthesis of the lower jaw. On the radiograph resorptive process not found.

Inspection 12 months: no complaints. Noted good ficicioglu was 4H.

Sources of information 1. Matveev, A. I., Ropes Century A., Gavryushin S. C. Application of mathematical modeling for the improvement of orthopedic treatment of end defects of dental rows // Dentistry. - 1990. - 1. - S. 48-51.

2. Nardi, E. Fabrication of complete dentures in the lower jaw with ball locks with elastic retention, located on the roots of the teeth // Dental technician. - 1999. - 1. - C. 14.

3. Olesov C. N., The Perevezentsev, A. P. Errors, complications and workarounds when using locking fasteners clasp dentures // Russian dental journal. - 2000. - 1. - S. 54-56.

Claims

Device for fixation of removable dental prosthesis on an implant containing a castle, made in the form of housing, on the inner surface of which is a bed for installation of the ring, characterized in that on the outer surface of the housing includes retention elements for better adhesion with the base of the denture, and the ring is made Nospanum Nickel-titanium shape memory, and the diameter of the ring is adjustable.

 

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