Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
• • 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
  • A61C8/0093—Features of implants not otherwise provided for
  • A61C8/0096—Implants for use in orthodontic treatment
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
  • A61C7/10—Devices having means to apply outwardly directed force, e.g. expanders

Definitions

• the present invention relates to a metallic anchorage system for the treatment of orthodontic malocclusions, characterized in that it focuses on the use of a palatal bar onto which two cross tubes, of the same diameter, have been inserted, one at each side.
• the present invention eliminates all the above disadvantages as it focuses on the use of a palatal bar on which two cross tubes of the same diameter are inserted, one at each side, moving along and on the palatal bar whilst the cross can rotate around the axis of the bar. In this way, control at vertical and horizontal, buccal-lingual, level is achieved during the movement.
• the ideal exertion of the force through the coil spring on the tooth (center of resistance) as well as the easy access of the palatal wire can be easily achieved.
• Figure 1 is a view of the upper tooth arch and the ortho microscrews, located in a palatal way, and the palatal bar welded on the bands of the a' molars and the cross tubes attached on said palatal bar.
• Figure 2 is a depiction of the anchorage system fully developed, in case we wish distalizing forces to be exerted through the coil springs to the a' molars.
• Figure 3a is a depiction of an alternative embodiment of the system where one or two premolars is missing, where instead of coil springs there are retraction means through the stops and to the cross tubes exerting mesializing forces.
• Figure 3b' is a depiction of an alternative embodiment of the system in case of open bite, where at the base of the screw of the screw-nut system (8) a metal button (13) of same diameter is attached.
• Figure 4 is the side view of the connector-screw driver and cross sections where its one end is a hexagon, in order to fit the opening of the respective wrench, and its other end is an octagon in order to exactly fit to the ortho microscrew that we wish to screw until reaching its final position.
• Figure 5 is a side view of the cross tubes and cross sections where it is shown that they are perpendicular to each other and also their nozzle with diameter 1 mm.
• Figure 6 is a facing view, side view and cross section view of the abutments, which are welded on the palatal wire and in this way they connect the ortho microscrews with the palatal bar through the cross tubes.
• Figure 7 is a side view and cross section view of the screw - nut system where the screw comprises an opening between the vertical flaps such that it is possible for the palatal wire to pass through said screw.
• Figure 8 is a side view and cross section view of the special screwdriver (10).
• Figure 9 depicts the wrench where the connector - screwdriver brings together the wrench with the ortho microscrew in order for it to be screwed to the best wished point in respect, from the one hand, of the stability of the ortho microscrew and from the other of the distance between the low part of the head of the ortho microscrew and the palatal mucosa. This part is of great clinical importance as most of the inflammations are located there.
• the invented system comprises two ortho microscrews (1) located in a palatal way at the imaginary line connecting the interspaces between the upper dogtooth and the premolar of the one side with the respective teeth of the other side, the palatal bar (3) connecting the two upper a' molars through bands, two cross tubes (4) which will pass through before the welding of the palatal bar (3) on the bands, the two abutments (9) on the ortho microscrews (1), the main palatal wire (5) of indicative diameter of 0,9 mm which through its welding on the abutments (9) it connects the ortho microscrews (1) with the a' molars through the palatal bar (3) and the cross tubes (4) forming actually a ⁇ shape, the two coil springs (7) one at each side pass through the horizontal part of the palatal wire (5), if distalizing forces are exerted, or there are no coil springs but retraction means such as retraction chains (1 1), if mes
• the present invention focuses mainly on the ortho microscrews which have been widely used lately in the orthodontic science. In this approach they are located in a palatal way between the dogtooth zone and the first premolar. There is no exact location as it depends on the anatomy of the palatal area of each person and the evaluation of the intervening person.
• the ortho microscrews used are available in the market and their length is usually between 8 mm to 12 mm whilst their width is between 1 ,5 mm to 2 mm and they are self taping.
• a connector - screwdriver (2) is used, the one end of which is of octagon shape and it completely fits to the ortho microscrew, and its other end is of hexagon shape in order to be completely inserted into the opening of the wrench (12).
• the ensuring of the stability between the ortho microscrews constitutes a parameter of great clinical importance as the stability of the ortho microscrews is mostly affected by the quality of the bone and by the absence of inflammations around the microscrews, factors that are mainly controlled by the controlled screw of the ortho microscrew and constitute the beginning of the success of the anchorage system.
• the palatal bar (3) of Gosgharian type is located at the upper two a' molars through bands which is immobilized either by welding or through a laser machine where two tubes (4), which are perpendicular between them, of cross shape are attached by welding or by laser, of indicative diameter of 1x1 mm respectively and of indicative length of 2x2 mm. Then the two ortho microscrews are covered with the abutments (9) and then the impression is taken.
• the reproduction of the area with the ortho microscrews is possible at the plaster model where the required preparation of the palatal wire (5) is made, which is round and its indicative diameter is 0,9 mm, in such a way in order for the palatal wire (5) to be passively fit to the two ortho microscrews and also to the horizontal tubes of each cross.
• the wire and the metal abutments (9) are being welded at their contact point through laser or welding.
• a metal button (13) of a respective diameter is attached to the base of the screw of the screw- nut system (8) which is used for cases where support is needed for the elastic attachment by the screw - nut system and cross tubes (see figure 3b').
• the attachment starts from the mesial side of the 1 st molar, surrounds the screw-nut system (8) and ends at the distal side of the 1 st molar in order for such force to be exerted that the intrusion of the 1 st molar to be achieved.

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Applications Claiming Priority (2)

Publications (1)

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Cited By (3)

Citations (4)

• 2013
  • 2013-08-19 GR GR20130100473A patent/GR1008288B/el active IP Right Grant
• 2014
  • 2014-08-18 WO PCT/GR2014/000046 patent/WO2015025181A1/en active Application Filing
  • 2014-08-18 EP EP14777756.9A patent/EP3107481A1/de not_active Withdrawn

Patent Citations (4)

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