JP2009160166A - Reposition system for dental implant - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reposition system for dental implant which reuses an upper structure to resolve a financial burden on a patient. <P>SOLUTION: The reposition system for dental implant has: an abutment 30 of a standardized size which is fixed to an upper part of a fixture 2 after removing an abutment 3 and a restoration 1 from the upper part of the fixture 2 embedded in an alveolar bone 10; a cylindrical stent 4 for covering the abutment 30; a fixture pin 5 inserted towards the abutment 30 through a hole formed in the stent 4 for fixing the stent 4 to the abutment 30; and the fixture 2 of the standardized size to which the abutment 30 is fitted. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a dental implant repositioning system, and more particularly to a dental implant repositioning system in which an upper structure (restoration) can be reused when the implant needs to be replaced.

  The dental implant means an artificial tooth structure formed by planting an artificial tooth root at a site where the tooth has been removed and fixing it to the alveolar bone, and fixing the upper structure to the artificial tooth root.

  Generally, an implant is composed of a fixture made of titanium, an abutment fixed on the fixture, and a restoration (prosthesis) as an artificial tooth fixed to the abutment.

  The implant can be applied only to the lost part without damaging the adjacent tooth around the lost tooth or surrounding tissue, and can provide the same masticatory power as the natural tooth, apparently natural tooth Implants are widely used as a dental procedure for recovering damaged or lost teeth.

  For example, JP-A-10-57402 (Patent Document 1) and JP-A-2007-98054 (Patent Document 2) disclose dental implants having such a configuration.

However, if it becomes necessary to replace the implant, conventionally, all of the fixtures, abutments and restorations (custom made) must be removed. For this reason, the upper structure has to be produced again, which is wasteful in terms of medical economy.
JP-A-10-57402 JP 2007-98054 A

  SUMMARY OF THE INVENTION An object of the present invention is to provide a dental implant repositioning system that eliminates a patient's economic burden by reusing an upper structure.

  The dental implant repositioning system according to the present invention has a standardized dimension that is attached to the upper portion of the fixture after removing the abutment and the restoration from the upper portion of the fixture embedded in the alveolar bone. An abutment, a cylindrical stent that covers the abutment, a fixing pin that is inserted toward the abutment from a hole formed in the stent to fix the stent to the abutment, and A fixture of standardized dimensions to which the abutment is attached, whereby the above object is achieved.

  In one embodiment, the fixing pin is inserted into each of a fixture having a standardized dimension and an abutment attached to the upper portion of the fixture.

  According to the dental implant repositioning system of the present invention, the abutment and the restoration are removed from the upper part of the fixture embedded in the alveolar bone, respectively, and then standardized to be attached to the upper part of the fixture. An abutment of a different size, a cylindrical stent that covers the abutment, and a fixing pin that is inserted from the hole formed in the stent toward the abutment in order to fix the stent to the abutment A fixture of standardized dimensions to which the abutment is attached.

  Therefore, when it becomes necessary to replace the implant, the operation is performed as follows.

  Remove the implant restoration from the abutment and remove the old abutment from the top of the fixture. A new standardized abutment is then secured to the top of the fixture. The abutment is covered with a cylindrical stent, and a fixing pin is inserted into the fixture through the hole of the stent.

  Remove the old fixture, abutment, stent and fixation pin from the alveolar bone and fix only the stent to the gum.

  Then, a standardized drill is inserted from the hole of the stent toward the alveolar bone to cut the alveolar bone. A new standardized fixture, abutment, stent, and fixation pin are combined and inserted into the alveolar bone hole. Remove the stent and fixation pin from the fixture, and then place the repair on the fixture abutment.

  Thus, the positional relationship between the implant and the abutment is matched by the fixing pin and the drill guided to the pin. Thus, when removing the implant, the implant can be re-implanted without wasting existing superstructure and abutments.

  An embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 6, the dental implant repositioning system of the present invention allows an abutment 3 and a restoration 1 to be placed from above the problematic fixture 2 embedded in the alveolar bone 10. After removal, a standardized abutment 30 attached to the top of the fixture 2, a cylindrical stent 4 covering the abutment 30, and the stent 4 for fixing the abutment 30 to the abutment 30. The fixing pin 5 is inserted from the hole formed in the stent 4 toward the abutment 30, and the fixture 2 has a standardized dimension to which the abutment 3 is attached.

  The standardized dimension abutment 30 fits into a recess formed in the lower surface of the stent 4, and also fits the standardized fixture 2.

  As shown in FIG. 6, the stent 4 is formed in a cylindrical shape, and a hole 40 is formed in the center thereof. A recess 41 communicating with the hole is formed on the lower surface of the stent 4, and the shape and size of the recess 41 are configured such that a standardized abutment 30 is fitted.

  The fixing pin 5 is formed in a size that can be inserted into the hole 40, the abutment 30, and the fixture 2 of the stent 4. When the fixing pin 5 is inserted into the hole 40, the abutment 30 and the fixture 2 of the stent 4, the fixing pin 5 does not sway with each other so that the fixing pin 5 does not have a gap. It can be inserted into the ment 30 and the fixture 2.

  Although the length of the stent 4 is not limited, it can be set to about 3-7 mm, and about 5 mm is particularly preferable.

  Further, the fixing pin 5 is preferably inserted into the abutment 30 by about 5 mm. In this case, the length of the fixing pin 5 is preferably about 10 mm.

  The standardized fixture 2 is set in size, dimension, and the like so as to fit the abutment 30.

  Here, the standardized abutment 30 and fixture 2 mean that dimensions, sizes, and the like are determined so that the parts of the dental implant are compatible with each other.

  Next, a case where the fixture 2 that needs to be replaced is replaced using the dental implant repositioning system will be described.

First, the implant restoration 1 is removed from the abutment 3 as shown in FIGS. The old fixture 2 and the old abutment 3 are fixed to the alveolar bone 10. (Fig. 4a)
Next, the old abutment 3 is removed from the upper part of the fixture 2. (B1 in FIG. 4)
Then, a new abutment 30 is fixed to the upper portion of the fixture 2 (screwed). The dimensions and size of the new abutment 30 are standardized as described above. (B2 in FIG. 4)
The abutment 30 is covered with the cylindrical stent 4. A hole 40 is formed in the center of the stent 4. The fixing pin 5 is inserted into the fixture 2 from the hole 40 of the stent 4. (C in FIG. 4)
At this time, there are usually natural teeth before and after the part where the implant exists. The stent 4 is positioned along the surrounding teeth.

  A pin 5 insertion hole is also formed in the center of the abutment 30. The length of the stent 4 is about 5 mm. The fixing pin 5 enters about 5 mm inside the abutment 30. The length of the total fixing pin 5 is about 10 mm.

The old fixture 2, the abutment 30, the stent 4 and the fixing pin 5 are removed from the alveolar bone 10. (The old fixture 2 is pulled out of the alveolar bone 10.) A hole is formed in the alveolar bone 10. (Fig. 4d)
Only the stent 4 is fixed to the gingiva. Here, there are usually natural teeth before and after the part where the implant exists. The stent 4 and the adjacent tooth are fixed with a fixing dental material. (E in FIG. 4)
The stent 4 and the fixing pin 5 to be guided are attached to the standardized abutment 30.

Then, the standardized drill 5 is inserted from the hole of the stent 4 toward the alveolar bone 10 to cut the alveolar bone 10. (F in FIG. 4)
The alveolar bone 10 is formed with holes that match the dimensions of the new standardized fixture 2. (G in FIG. 5)
Here, the size of the hole is determined as follows.

  The size of the hole into which the implant enters is drilled to match the remaining bone. The stent 4 determines only the direction of the implant. When implanting a new implant, the depth of implantation is arbitrary. Depending on the depth, the length of the abutment 30 is also determined.

A new standardized fixture 2, abutment 30, stent 4 and fixing pin 5 are prepared. (H in FIG. 5)
A new standardized fixture 2, abutment 30, stent 4 and fixation pin 5 are combined and inserted into the hole of the alveolar bone 10 and attached.

Fixture 2 is embedded in the bone. (I in FIG. 5)
The stent 4 and the fixing pin 5 are removed from the fixture 2. (J in FIG. 5)
The repair object 1 is put on the abutment 30 of the fixture 2. (K in FIG. 5)
Thus, after each part is fixed, the implant is removed, a drill is inserted into the fixing pin portion (the hole portion 40 of the stent), and bone formation is performed again. After the bone formation is completed by the drill, the new standardized fixture 2 is fixed with the fixing pins 5 and embedded in the bone.

  A feature of the present invention is the re-implantation of implants without wasting existing superstructures and abutments 30 when removing the implants again as described above. Further, the positional relationship between the implant and the abutment 30 is that the positional relationship between the fixing pin 5 and the drill guided to the pin 5 is matched.

  The abutment 30 may be fixed to the fixture 2 with an abutment screw.

The conventional schematic which shows the state which the dental implant has adhered to the alveolar bone. Sectional drawing of the conventional figure shown in FIG. The disassembled perspective view of the dental implant shown in FIG. Explanatory drawing which shows the repositioning system of a dental implant. Explanatory drawing which shows the repositioning system of a dental implant. The perspective view and sectional drawing of a stent.

Explanation of symbols

1 Restoration 2 Fixture 3 Abutment 4 Stent 5 Fixing Pin

Claims (2)

A standardized dimension abutment that is attached to the top of the fixture after removing the abutment and restoration from the top of the fixture embedded in the alveolar bone, respectively;
A cylindrical stent covering the abutment;
In order to fix the stent to the abutment, a fixing pin inserted from the hole formed in the stent toward the abutment;
A dental implant repositioning system having a standardized dimension fixture to which the abutment is attached. The dental implant repositioning system according to claim 1, wherein the fixing pin is inserted into each of a fixture having a standardized dimension and an abutment attached to an upper portion of the fixture.

Images