JP2877856B2 - Artificial root implant groove processing device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for processing an implant groove for implanting an artificial root (implant) in oral bone.

[Conventional technology]

Artificial roots usually consist of thin flat blades that are implanted in the jaw bone.When this is implanted along the jaw bone, it fits tightly with the bone to exert a strong bonding force, and the artificial root mounted on it It must be able to support the teeth stably and firmly.

In order to implant this artificial root, one or two straight grooves are formed along the jawbone according to the number of blades. Conventionally, a number of saw blades are formed on the outer periphery of the disk for this groove processing. The formed rotary tool was used. Therefore, the contour in the depth direction of the implantation groove by one cutting operation is one circular arc, and in order to form the implantation groove corresponding to the blade of the artificial tooth root having other contours, it is necessary to perform plural times in the same plane. In order to machine a deep groove, it is necessary to use a tool with a large diameter, so the length of the upper opening becomes longer than necessary depending on the depth, and compared to the actual shape of the blade. Therefore, there is a disadvantage that the implant groove becomes large in width and the implant becomes gradual, and the holding power of the artificial tooth root is reduced, so that good implant cannot be performed.

Furthermore, since bodily fluids such as blood and saliva are secreted into the oral cavity during processing, the processing becomes more difficult, and when implanting multiple artificial roots side by side along the jawbone, the intervals and positions between each other are increased. It is also necessary to adjust the extension, and grooving is an extremely difficult operation. If the dimensional accuracy, linearity, depth, position, etc. of such implanted grooves are not accurately machined, the depth must be adjusted at the subsequent implantation stage, and it must be accurately positioned and implanted. Requires considerable skill and handling. Overfilling of the artificial roots can impinge on and damage the mandibular tissue through nerves and blood vessels. In addition, a head is attached to the blade, and the artificial head is supported on this head.
Since an occlusal force of about 35 to 70 kgf acts, there is a drawback in that if good implantation is not performed, the material loosens or moves and has poor stability and cannot withstand long-term use.

[Problems to be solved by the invention]

The present invention has been made in view of such a point,
An object of the present invention is to provide an artificial root implant groove machining apparatus capable of efficiently machining an implant groove conforming to the contour of a blade of an artificial tooth in a jaw bone.

[Means for solving the problem]

An object of the present invention is to provide an apparatus for forming a prosthesis with a blade having a contour of one or more circular arcs surrounding an implantable groove in a jawbone, the sector having a curvature substantially equal to the curvature of the circular arc. A cutter plate having a number of blades formed on an outer peripheral portion thereof; a cutter plate mounting shaft having the cutter plate mounted at one end; and a bearing member rotatably holding the cutter plate mounting shaft about the axis thereof. An arm attached to the end of the cutter plate mounting shaft opposite to the side where the cutter plate is mounted, in parallel with the cutter plate; and an arm opposite to the side of the arm mounted on the cutter plate mounting shaft. An actuator for reciprocating the end portion within a predetermined angle range around the cutter plate mounting shaft.

As the actuator, an armature attached or connected to an end of the arm opposite to the side attached to the cutter plate attachment shaft, and the armature within a predetermined angle range around the cutter plate attachment shaft. And an electromagnet that reciprocates at a time can be suitably used.

It is recommended that the edge of the processing blade of the cutter plate is coated with a cemented carbide material, and that the processing blade is formed with a set.

Furthermore, on the axis parallel to the cutter plate mounting axis, the same number of jig blades as the cutter plate are spaced apart from the cutter plate by a predetermined distance, and each is positioned in the same plane as the cutter plate. Installation is recommended.

[Action]

In the present invention configured as described above, since the processing is performed while reciprocatingly rotating the sector-shaped cutter plate within a small angle range, the contour of the blade of the artificial tooth root is adapted to the jaw bone. The implant groove can be efficiently and accurately processed without generating a useless processing portion.

〔Example〕

 Hereinafter, the present invention will be specifically described with reference to the drawings.

FIG. 1 is a front view showing an embodiment of an artificial tooth root, FIG. 2 is a side view thereof, and FIG. 3 shows an embodiment of a cutter plate of the artificial tooth root groove processing apparatus according to the present invention. FIG. 4 is a front perspective view, FIG. 4 is a side view thereof, and FIG. 5 shows an embodiment of an artificial root implant groove machining apparatus according to the present invention for machining an implant groove using the cutter plate shown in FIG. FIG. 6 is an explanatory view showing another configuration of the actuator, FIG. 7 is a perspective view showing another embodiment of the cutter plate used in the implant groove processing apparatus according to the present invention, and FIG. FIG. 9 is a front view of an artificial tooth root having a shape different from that of FIG. 1, FIG.
FIG. 10 is a top view showing another embodiment of the artificial tooth root implant groove machining apparatus according to the present invention, and FIG. 11 is an explanatory view showing the machining state.

The artificial tooth root shown in FIGS. 1 and 2 has two blades 1 and 1 'each having a shape such that the contour of the implantation tip connects two arcs (see FIG. 1). As described above, they are opposed to each other in parallel, and they are integrally connected to each other with the rod-shaped heads 2, 2 sandwiched between them to form a single structure. Blade 1 thickness t = about 0.1 to 0.5 mm, depth D =
The head 2 has a length L of about 5 to 10 mm and a thickness T of about 2 to 3 mm, and the blade 1 is implanted and held in a groove cut into the jaw bone. The artificial teeth are inserted and supported on the head 2 exposed in the oral cavity. The hole 1a of the blade 1 is used to regenerate the bone through which the blade 1 is firmly fixed and supported in the jaw bone. The hole 2a of the head 2 is convenient for operations such as implantation and extraction. It is provided as follows.

FIG. 3 is a front perspective view showing an embodiment of the cutter plate of the apparatus according to the present invention for performing the above-described groove for implanting the artificial tooth root, and FIG. 4 is a side view thereof.

The illustrated cutter plate 3 is composed of two cutters formed by forming a large number of blades 3a ', 3a' on the leading edge having the same or similar shape as the leading edge of the blade 1 shown in FIG. The plates 3a and 3b are integrally fixed in parallel with each other, and are mounted so that the cutter plates 3a and 3b are perpendicular to the mounting shaft 4.

The thickness t (see FIG. 4) of the cutter plates 3a and 3b is made substantially equal to the thickness t of the blade 1, and the interval T between both cutter plates is made substantially equal to the blade interval T. .

In processing the implantation groove by the cutter plate 3, the mounting shaft 4 is reciprocated within a small angle range, whereby the cutter plate 3 is reciprocated within a small angle range as shown by an arrow A in FIG. Vibrate. The reciprocating vibration angle is usually about 4 ° to 6 °, and the reciprocating vibration is set such that the blade 3a ', 3a' at the leading edge of the cutter plate moves about twice the pitch interval. The reciprocating vibration frequency is about
Preferably, the frequency is about 200 to 300 Hz.

The grooving is performed by cutting the jaw bone P having the incised gums from the alveolar crest with the cutter plate 3, and the depth D is such that the blades 1 and 1 'of the artificial root are just implanted or slightly deeper than it (actually 2 to 2). Cut to 3 mm deeper). At this time, the artificial tooth root 2 is formed by the two cutter plates 3a and 3b.
Two parallel grooves into which the blades 1, 1 'are implanted can be machined simultaneously. Further, since the tip edges of the cutter plates 3a and 3b have a shape similar to the tip edge shape of the blades 1 and 1 ', the bottom Pa of the processed implantation groove has a shape corresponding to the tip edge of the blades 1 and 1'. Processed at one time, and the groove width is processed so that there is a gap of about 0.025 to 0.05 mm on one side with the blade, and the blades 1, 1 'are inserted and implanted in this, and the blade fits well in the groove Fixed at.

If this is machined with a conventional circular saw-shaped rotary cutter, the bottom of the machined groove becomes an arc-shaped contour Pb, which cannot be adapted to the shape of the blades 1 and 1 ', and extra machining is performed, and the artificial tooth root is removed. It cannot be held stably.

It is recommended that the blades 3a ', 3a' of the cutter plate 3a be sharpened alternately in opposite directions from both side surfaces of the cutter plate to form a so-called set. The same applies to In addition, it is possible to improve abrasion resistance and corrosion resistance by keeping the side edges of the blades 3a ', 3a' thinly coated with a super hard material by a discharge coating method, etc., and to maintain stable sharpness Can be.

Next, with reference to FIG. 5, one embodiment of the artificial tooth root groove forming apparatus according to the present invention, which performs the groove processing by reciprocating the cutter plate as described above, will be described.

In the figure, 3 is the cutter plate, 4 is a cutter plate mounting shaft, 5
Is a bearing member for rotatably holding the cutter plate mounting shaft 4 about its axis. Reference numeral 6 denotes an end of the cutter plate mounting shaft 4 opposite to the side on which the cutter plate is mounted, in parallel with the cutter plate. The arm 7 to be attached is an armature attached to the end of the arm 6 opposite to the end attached to the cutter plate attachment shaft 4, 8a and 8b are electromagnets for vibrating the armature 7, and the armature 7 and the electromagnet 8a , 8b constitute an actuator 9 for driving the arm 6.

The armature 7 is made of a permanent magnet, and is magnetized so that, for example, one side surface 7a is an N pole and the other side surface 7b is an S pole. Therefore, 200 to 200 is applied to the coil 8c of the electromagnets 8a and 8b
By passing an alternating current of about 300 Hz, the polarities of the magnetic poles of the electromagnet are alternately switched, whereby the armature 7 is caused to reciprocate between the magnetic poles. When this occurs, this vibration is transmitted to the cutter plate 3 via the arm 6 and the cutter plate mounting shaft 4, and the cutter plate 3 is reciprocally oscillated about the mounting shaft 4 as indicated by an arrow, whereby the implantation is performed. Groove processing can be performed.

By making the length of the arm 6 sufficiently longer than the radius of the cutter plate 3, the lever plate with the mounting shaft 4 as a fulcrum can vibrate the cutter plate 3 with a strong enough force to perform groove processing. Can be.

The drive type of the armature 7 is not limited to the one that alternately comes into contact with and separates from both magnetic poles of the electromagnet as shown in FIG. 5, but the linear type that slides along the magnetic poles as shown in FIG. Is also good.

FIG. 7 shows another embodiment of the cutter plate used in the implant groove processing apparatus according to the present invention, in which two arc plates forming the leading edge of the blade 1 are provided separately.
These are processed and formed by 10a and 10b, respectively. Each of the cutter plates is manufactured by integrally fixing two cutter plates. The cutter plates 10a and 10b can be individually reciprocated within a predetermined angle range. For example, the gear 12 provided on the mounting shaft 11 of the cutter plate 10a and the gear 14 provided on the mounting shaft 13 of the cutter plate 10b are engaged with one gear 15, and the gear 15 is shown in FIG. The reciprocating rotation of the cutter plate mounting shaft 4 causes the cutter plates 10a and 10b to reciprocate and vibrate simultaneously in the same direction. As a result, the respective arcs are formed by the two cutter plates, the two arcs are combined, and two studs corresponding to the shape of the tip edge of the blade 1 in the shape of a two-pole mountain are simultaneously formed. Also in this case, the implantation groove having a shape that cannot be processed at once with the conventional circular saw-shaped cutter is processed at once without waste.

FIG. 8 is a front view of an artificial dental implant having a shape different from those of FIGS. 1 and 2, and FIG. 9 is a side view thereof. This artificial tooth root is formed by integrally opposing blades 1 and 1 ′ each having a tip edge formed in a single arc shape and integrally connecting the blades 1 and 1 ′ with a rod-shaped head 2 interposed therebetween. is there. When implanting the blades 1 and 1 ', a groove having the same circular arc-shaped bottom can be machined by machining using one of the cutter plates 10a and 10b shown in FIG. The leading edge of 1,1 'fits into the machining groove and can be firmly implanted and fixed.

If the two cutter plates 10a and 10b shown in FIG. 7 are arranged at a distance of not less than the distance at which the arcs of the machining grooves do not intersect, the grooves for implanting the artificial tooth root as shown in FIG. Two pieces can be formed, and the positioning can be accurately performed by arranging the cutter plates 10a and 10b corresponding to the implantation intervals, thereby facilitating the machining of the elaborate artificial tooth root.

FIG. 10 shows the use of only one cutter plate 9 as shown in FIG. 7 to machine a groove for implanting an artificial root having a two-edge mountain-like tip edge as shown in FIG. An implantation groove machining apparatus provided with a positioning jig suitable for
FIG. 11 shows the processing state.

In the implantation groove machining apparatus shown in FIG.
A cutter plate similar to the cutter plate 9 shown in the figure, a mounting shaft 4 thereof, a bearing member 5 thereof, and an actuator 9 similar to the actuator 9 shown in FIG. Is an actuator that reciprocates.
16 is a fan-shaped blade having an arc radius and a thickness equivalent to one arc of the artificial tooth root implant blades 1 and 1 ', which are fixed in parallel to the support shaft 17 at the same interval as the implant blades 1 and 1'. This is a jig blade composed of: The jig blade 16 is mounted so as to be in the same plane as the cutter plate 9. Reference numeral 19 denotes a joint fixed to both ends of the actuator 9, and the support shaft 17 of the jig blade is rotatably held at an end of the joint by a hinge 18.

FIG. 11 shows a state in which a groove for implanting an artificial tooth root as shown in FIG. While the jig blade 16 is inserted and guided in the processing groove Pa of the jaw bone, the cutter plate 9 is cut down in a state where the jig blade 16 is positioned at a predetermined interval based on the jig blade 16, and the depth at which the jig blade 16 hits the bottom of the processing groove By completing the groove processing, two parallel grooves having the same width can be accurately processed on the extension of the two grooves previously processed. Further, the processing depth can be accurately set to a predetermined depth.

Since the processing of the jawbone involves the overflow of blood and other body fluids, it is difficult to determine the processing position because the entire processing part is dirty, and the relative position between the previously processed part and the next processing part is accurately positioned. It is difficult, but by using the grooving device as described above, the jig blade 16 is inserted into the processing groove in advance, and the cutter is positioned based on this, so that accurate groove processing can be performed at the correct position. It is possible to do that.

In the embodiment of FIG. 10, the support shaft 17 of the jig blade is hinged to the joint 19, but the jig blade 16 may be hinged to the support shaft 17. In that case, the jig blade 16 can be easily inserted into the processing groove by being fitted while tilting during processing.

The implant groove processing apparatus shown in FIG. 10 not only processes the implant groove of the artificial root as shown in FIG.
By making it possible to adjust the distance between the mounting shaft 4 of the cutter plate and the support shaft 17 of the jig blade, a groove for implanting a plurality of artificial roots as shown in FIG. It will be easily understood that the present invention can be suitably used in such cases.

〔The invention's effect〕

Since the present invention is configured as described above, according to the present invention, there is provided an artificial root implant groove machining apparatus capable of efficiently machining an implant groove conforming to the contour of an artificial tooth blade in a jaw bone. Can be done.

It should be noted that the present invention is not limited to the above-described embodiments. For example, the shapes of the electromagnet and the armature of the actuator, the shape of the bearing member, and the like can be appropriately changed within the scope of the present invention. The invention embraces all modifications that can be easily conceived by those skilled in the art from the above description.

[Brief description of the drawings]

FIG. 1 is a front view showing one embodiment of an artificial tooth root, and FIG.
Fig. 3 is a side view, Fig. 3 is a front perspective view showing one embodiment of a cutter plate of the artificial tooth root implant groove machining apparatus according to the present invention,
FIG. 4 is a side view thereof, and FIG. 5 is an explanatory view showing an embodiment of an artificial root implant groove machining apparatus according to the present invention for machining an implant groove using the cutter plate shown in FIG. FIG. 6 is an explanatory view showing another configuration of the actuator, FIG. 7 is a perspective view showing another embodiment of the cutter plate used in the implant groove processing apparatus according to the present invention, and FIG. 8 is different from FIG. FIG. 9 is a front view of an artificial tooth having a different shape, FIG. 9 is a side view thereof, FIG. 10 is a top view showing another embodiment of the artificial tooth implanting groove machining apparatus according to the present invention, and FIG. It is explanatory drawing which shows a processing state. 1,1 ': Artificial root blade 2,2': Artificial root head 3: Cutter plate 4: Mounting shaft 5: Bearing member 6: Arm 7: Armature 8a, 8b: Electromagnet 8c ... Coil 9 ... Actuator 10a, 10b ... Cutter plate 11, 13 ... Mounting shaft 12, 14, 15 ... Gear 16 ... Jig blade

Claims (6)

(57) [Claims] An apparatus for processing and forming an implant groove in a jawbone of an artificial dental root having a shape in which an implanting tip edge profile of a blade (1,1 ') is connected to one or more arcs, wherein the arc has a curvature and a curvature. A cutter plate (3) formed by forming a large number of blades on an outer peripheral portion of a sector having substantially the same curvature; a cutter plate mounting shaft (4) having the cutter plate mounted at one end; and the cutter plate mounting shaft. A bearing member (5) rotatably held about an axis; and an arm (6) attached to an end of the cutter plate mounting shaft opposite to the side where the cutter plate is attached, in parallel with the cutter plate. And an actuator (9) for reciprocating an end of the arm opposite to the side attached to the cutter plate mounting shaft within a predetermined angle range around the cutter plate mounting shaft. Groove processing equipment. 2. The armature is mounted on an end of the arm opposite to the side of the arm mounted on the cutter plate mounting shaft, or a connected armature is fixed around the cutter plate mounting shaft. An electromagnet (8a, 8b) reciprocating within an angle range of (1).
An apparatus for processing an artificial root implant groove according to item 1. 3. The apparatus according to claim 1, wherein the same number of cutter plates as the blade of the artificial tooth root are fixed on the cutter plate mounting shaft in parallel with the same interval between the blades. 4. The artificial root implant groove machining apparatus according to claim 1, wherein an edge of a blade for machining the cutter plate is coated with a cemented carbide material. 5. The apparatus according to claim 1, wherein the blade for processing the cutter plate has a set. 6. An apparatus for forming an implantable groove in a jawbone of an artificial tooth root, wherein the contour of the implantable tip edge of the blade (1, 1 ') is formed by connecting one or a plurality of arcs. A cutter plate (3) formed by forming a large number of blades on an outer peripheral portion of a sector having substantially the same curvature; a cutter plate mounting shaft (4) having the cutter plate mounted at one end; and the cutter plate mounting shaft. A bearing member (5) rotatably held about an axis; and an arm (6) attached to an end of the cutter plate mounting shaft opposite to the side where the cutter plate is attached, in parallel with the cutter plate. An actuator (9) for reciprocating an end of the arm opposite to the side attached to the cutter plate mounting shaft within a predetermined angle range around the cutter plate mounting shaft; and the cutter plate mounting shaft. On an axis parallel to Separating the cutter plate and a predetermined distance, and the cutter plate and a respective said cutter plate and the same number of jig blade mounted so as to be positioned in the same plane (16) comprises an artificial tooth root implant grooving apparatus.