KR20220136586A - Method of dental implant surgery using 3D scanning - Google Patents

Abstract

Disclosed is a method of dental implant treatment using 3D scan. The method of dental implant treatment using 3D scan comprises: a fixture placement step of placing and fixing a fixture to the alveolar bone; a healing abutment installation step of fixing and installing a healing abutment to the fixture, the healing abutment provided with a fixture insertion portion inserted into the fixture, an exposed portion protruding out of the gum and exposed in the oral cavity, and a gum regeneration guide portion between the fixture insertion portion and the exposed portion, and capable of 3D scanning while light reflection of the exposure portion is smaller than the light reflection of the metal; a 3D scan step before gum regeneration of 3D scanning the healing abutment and surroundings thereof to generate scan data before gum regeneration before the gum is regenerated around the healing abutment; an abutment manufacturing step of manufacturing an abutment by 3D printing based on the scan data before gum regeneration; a permanent dental prosthesis manufacturing step of manufacturing a permanent dental prosthesis by 3D printing based on the scan data before gum regeneration; and an abutment and permanent dental prosthesis installation step of removing the healing abutment from the fixture and fixing and installing the abutment and permanent dental prosthesis to the fixture after the gum is regenerated around the healing abutment. Accordingly, a dental implant treatment period can be greatly shortened and a cost thereof can be reduced.

Description

Method of dental implant surgery using 3D scanning

The present invention relates to a dental implant procedure, and more particularly, to a method of performing a dental implant procedure by 3D scanning a healing abutment, and manufacturing a fixed abutment and a permanent dental prosthesis by 3D printing.

In dental treatment, a dental implant procedure is to implant an artificial tooth. A fixture made of titanium or titanium alloy, which does not have a rejection reaction in the human body, is implanted in the alveolar bone from which the tooth has escaped. It is a procedure that restores the function of teeth by fixing them. In the case of dentures, the surrounding teeth and bones may be damaged over time, but implants do not damage the surrounding tooth tissue, and although they have the same function and shape as natural teeth, they can be used semi-permanently because no cavities occur.

Briefly describing the conventional dental implant procedure, first, a groove (groove) matching the dimensions of the fixture is formed through a drilling and tapping process in the alveolar bone, and the fixture is embedded in the alveolar bone. When the fixture is fixed to the alveolar bone by bone fusion, a healing abutment is fixed and fastened to the fixture to aesthetically reconstruct the gum. When the gums are aesthetically reconstructed, the healing abutment is removed from the fixture, an impression coping is fastened to the fixture and an impression is made to cover the impression, and based on the obtained impression, a fixing abutment and a permanent A dental prosthesis, or crown, is manufactured. Meanwhile, while the fixing abutment and the permanent dental prosthesis are being manufactured, the healing abutment is fastened to the fixture again. When the fixing abutment and the permanent dental prosthesis are manufactured, the healing abutment is removed from the fixture again, the fixing abutment is fixedly coupled to the fixture, and the permanent dental prosthesis is fixedly coupled to the fixing abutment.

In the conventional dental implant procedure, the healing abutment is fixed to the fixture and then removed, then an impression is taken, and the healing abutment is fixed and fastened to the fixture again until the production of the fixing abutment and the permanent dental prosthesis is completed. Go through the steps of removing it from the fixture again. Accordingly, the period until the dental implant procedure is completed is delayed and the dental clinic is also frequently visited, which increases the inconvenience of cost and time loss.

Unexamined Patent Publication No. 10-2015-0036467

The present invention, by fastening the healing abutment to the fixture, performing a 3D scan before the gum is regenerated, and manufacturing a fixed abutment and a permanent dental prosthesis based on this scan data, the period of dental implant surgery is shortened and the cost is reduced, 3D A dental implant treatment method using a scan is provided.

The present invention provides a fixture implantation step of implanting and fixing a fixture to the alveolar bone, a fixture insertion part inserted into the fixture, an exposed part protruding out of the gum and exposed in the oral cavity, and the fixture insertion part and exposure A healing abutment installation step of providing a gum regeneration guide between the parts, and fixing and installing a healing abutment capable of 3D scan (3 digit scan) to the fixture because the light reflection of the exposed portion is smaller than the light reflection of the metal; Before the gums are regenerated around the healing abutment, 3D scanning the healing abutment and its surroundings to generate scan data before gum regeneration 3D scanning step before gum regeneration, fixed by 3D printing based on the scan data before gum regeneration A fixing abutment manufacturing step of producing an abutment, a permanent dental prosthesis manufacturing step of manufacturing a permanent dental prosthesis by 3D printing based on the scan data before the gum regeneration, and after the gums are regenerated around the healing abutment, the It provides a dental implant treatment method using a 3D scan, comprising the steps of removing the healing abutment from the fixture, and installing the fixing abutment and the permanent dental prosthesis to fix the fixing abutment and the permanent dental prosthesis to the fixture.

The fixing abutment manufacturing step and the permanent tooth prosthesis manufacturing step are performed separately, and the fixing abutment and permanent dental prosthesis installation step is a healing abutment removal step of removing the healing abutment from the fixture, the fixing abutment A fixing abutment fixing step fixedly coupled to the fixture may include a permanent dental prosthesis fixing step of covering and fixing the permanent tooth prosthesis to the fixing abutment through a dental cement.

The manufacturing of the permanent dental prosthesis may include laminating the material of the permanent dental prosthesis by 3D printing on the fixing abutment to form a permanent dental prosthesis integrally coupled to the fixing abutment.

The fixing abutment and the permanent tooth prosthesis are made of the same material material, and the fixing abutment manufacturing step and the permanent tooth prosthesis manufacturing step may be performed together so that the fixing abutment and the permanent tooth prosthesis are integrally formed.

The dental implant treatment method using the 3D scan is, after the 3D scan step before the gum regeneration, when the end of the gum is regenerated around the healing abutment, the end of the regenerated gum is 3D scanned to generate the scan data after the gum regeneration Further comprising a 3D scan step after gum regeneration, wherein the fixing abutment manufacturing step is based on the scan data before the gum regeneration and additionally referring to the scan data after the gum regeneration with 3D printing to produce the fixing abutment The manufacturing of the permanent dental prosthesis may include manufacturing the permanent dental prosthesis by 3D printing by additionally referring to the scan data after the restoration of the gums along with the scan data before the restoration of the gums. can

According to the present invention, a fixing abutment and a permanent tooth prosthesis are manufactured through 3D printing using 3D scan data before gum regeneration generated by 3D scanning the inside of the oral cavity before the gum is regenerated while the healing abutment is fixed to the fixture, When the gums are regenerated, the healing abutment is immediately removed from the fixture, and the fixing abutment and the permanent dental prosthesis are fixedly installed in the fixture, thereby greatly shortening the dental implant operation period and reducing the dental implant operation cost.

In addition, since clear 3D scan data can be obtained through 3D scan without a scan cap or polish remover applied to the healing abutment, dental implant surgery becomes easier and costs are reduced.

1 is a flowchart of a dental implant procedure using a 3D scan according to an embodiment of the present invention.
Figure 2 is a cross-sectional view showing a state in which a 3D scannable healing abutment is installed on the fixture implanted in the alveolar bone.
3 is a front view showing a state in which the fixing abutment and the permanent tooth prosthesis are installed in the fixture after the gum is regenerated.

Hereinafter, a dental implant treatment method using a 3D scan according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Terms used in this specification are terms used to properly express preferred embodiments of the present invention, which may vary depending on the intention of a user or operator or customs in the field to which the present invention belongs. Accordingly, definitions of these terms should be made based on the content throughout this specification.

1 is a flowchart of a dental implant procedure using a 3D scan according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view showing a 3D scannable healing abutment installed on a fixture placed in alveolar bone, FIG. 3 is a gum It is a front view showing the fixed abutment and permanent tooth prosthesis installed on the fixture after regeneration. Referring to FIG. 1 , the dental implant treatment method using 3D scan according to an embodiment of the present invention includes a fixture placement step (S10), a healing abutment installation step (S20), a 3D scan step before gum regeneration (S30), for fixing The abutment manufacturing step (S40), the permanent tooth prosthesis manufacturing step (S50), and the fixing abutment and the permanent tooth prosthesis installation step (S60) is provided.

1 to 3 together, the fixture placement step (S10) is a step of placing the fixture (10) in the alveolar bone (1) of the patient. The fixture 10 is a member in which a screw hole 13 extending in the longitudinal direction and having an open upper side is formed, and a male screw pattern 11 is formed on the outer circumferential surface to be fixed to the alveolar bone 1 . is formed, and a female screw pattern 12 is formed on the inner circumferential surface of the screw hole 13 . The fixture 10 is implanted and fixed at or around the point where the root is missing from the alveolar bone (1) of the patient. In the process of implanting the fixture 10 in the alveolar bone, the gum 3 covering the alveolar bone is partially incised.

Healing abutment installation step (S20) is a 3D scan (3 digit scan) is a step of fixing the possible healing abutment 20 to the fixture (10). The healing abutment 20 is fixedly coupled to the fixture 10 by using a screw 41 so that the gums are aesthetically regenerated in the process of regenerating the damaged gum 1 to implant the fixture 10 . The healing abutment 20 is a base 21 fitted to the fixture 10, and an abutment protrusion 31 that is integrally bonded to the base 21 and protrudes in a direction away from the fixture 10. ) is provided. The base 21 may be formed of a metal material. Preferably, the base 21 may be formed of pure titanium (Ti) or a titanium alloy having excellent biocompatibility.

The base 21 has an abutment protrusion joint 22 having an outer peripheral surface joined to the abutment protrusion 31 and covered by the abutment protrusion 31, a fixture insertion part 26 inserted into the fixture 10, and the abutment Formed between the protrusion abutment 22 and the fixture insertion section 26, the abutment protrusion abutment 22 in a radial direction about the axis AX of the healing abutment 20 to have a larger diameter than the diameter. It has a flange portion (24) extended to the.

The base 21 further includes a polygonal projection 27 having a cross section of a polygon such as a hexagon or an octagon. The outer peripheral surface of the fixture insertion part 26 is inclined so that the diameter gradually expands from the polygonal protrusion 27 to the flange part 24 . Screw through-holes 28w and 28s extending in a line along the axis AX are formed in the base 21 so that the screw 41 passes therethrough. The screw through-holes 28w and 28s formed in the base 21 have a small inner diameter portion 28s that is relatively close to the fixture 10 and an inner diameter larger than the small inner diameter portion 28s, and the relatively small inner diameter portion 28s ) with a larger inner diameter 28w farther from the fixture 10 than the The large inner diameter portion 28w and the small inner diameter portion 28s are separated by a step surface 29 .

On the inner peripheral surface around the inlet of the screw hole 13 formed in the fixture 10, the fixture insertion part 26 and the polygonal protrusion 27 of the base 21 are fitted and seated in a base seating groove 14 ) is formed. The base seating groove 14 is inclined having a polygonal inner peripheral surface 16 having a polygonal inner peripheral surface corresponding to the polygonal protrusion 27 and an inclined inner peripheral surface corresponding to the inclined outer peripheral surface of the fixture insertion part 26 . An inner peripheral surface portion (15) is provided. When the base 21 of the healing abutment 20 is seated in the base seating groove 14, the healing abutment 20 does not rotate about the axis AX.

The abutment protrusion 31 is connected to the flange portion 24 of the base 21 and leads to the gum regeneration guide part 32 whose diameter is expanded as it goes away from the fixture 10, and the gum regeneration guide part 32, It has an exposed portion 33 that is further spaced apart from the fixture 10 than the gum regeneration guide portion 32 . The exposed portion 33 protrudes out of the gum 1 and is exposed so as to be visible in the oral cavity of the patient. The gum regeneration guide part 32 is a part inducing the gum 1 to grow as intended in the process of the gum 1 being regenerated, and the fixture insertion part 26 of the base 21 and the abutment protrusion 31 are exposed. Between the portions 33 , more precisely, it is provided between the flange portion 24 and the exposed portion 33 .

A screw through hole 37 extending along the axis AX is formed in the abutment protrusion 31 . The inner diameter of the screw through hole 37 of the abutment protrusion 31 coincides with the inner diameter of the large inner diameter portion 28w of the base 21 . The abutment protrusion 31 and the screw through-holes 37, 28w, and 28s of the base 21 are aligned in a straight line along the axis AX so that the screw 41 passes therethrough. When the base 21 of the healing abutment 20 is fitted and seated in the base seating groove 14, the screw through holes 37, 28w, 28s of the healing abutment 20 and the screw hole 13 of the fixture 10 These are aligned in a straight line along the axis AX.

The abutment protrusion 31 is integrally bonded to the base 21 and may be formed of a polymer resin material. Preferably, the abutment protrusion 31 has excellent biocompatibility and has a light reflectance smaller than the light reflectance of a metal PEEK (polyetheretherketone)-based synthetic resin, PEKK (polyetherketoneketone)-based synthetic resin, polyethersulfone (PESU; polyethersufone)-based synthetic resin, Alternatively, it may be formed of a polyetherimide (PEI)-based synthetic resin. Since PEEK and PEKK have excellent wear resistance and impact resistance, the healing abutment 20 may exhibit durability comparable to that of the healing abutment formed entirely of a metal material. The PEEK-based synthetic resin, PEKK-based synthetic resin, polyethersulfone-based synthetic resin, and polyetherimide-based synthetic resin may each contain a small amount of additives in addition to the main materials PEEK, PEKK, polyethersulfone, and polyetherimide.

Polymer resin materials, such as the PEEK-based synthetic resin, PEKK-based synthetic resin, polyethersulfone-based synthetic resin, and polyetherimide-based synthetic resin, are conventionally used as a material for healing abutments, for example, titanium (Ti), stronger than metals such as titanium alloys Although this is a bit weak, it is an engineering plastic with sufficient rigidity to be applied to a healing abutment that is temporarily used until it is replaced by a fixing abutment, and is harmless to the human body, and the cost of the material is lower than that of titanium and titanium alloys. It is cheaper. In addition, the PEEK-based synthetic resin, the PEKK-based synthetic resin, the polyethersulfone-based synthetic resin, and the polyetherimide-based synthetic resin are easy to apply a color that almost matches the original tooth color of the patient receiving dental implant treatment on the abutment protrusion 31 do.

The polymer resin material has a lower light reflectance than a metal material such as titanium (Ti) or titanium alloy. Even if the inside of the oral cavity is 3D scanned without the cover, it is possible to perform a 3D scan clearly without errors such as smearing. Using the 3D-scanned scan data of the inside of the oral cavity in this way, the fixing abutment 50 and the permanent dental prosthesis 60 can be manufactured. As a result, when the healing abutment 20 capable of 3D scanning is used, the cost of dental implant surgery is reduced compared to the case of using a healing abutment made of all metal parts, and the time required for dental implant surgery is also shortened.

The screw 41 for fastening the healing abutment 20 to the fixture 10 has a screw post 43 extending along the axis AX, and a screw head formed to have an expanded diameter at the upper end of the screw post 43 . (42) is provided. A male screw pattern 45 is formed on the outer peripheral surface of the end of the screw pillar 43 . In a state where the fixture insertion part 26 and the polygonal projection 27 of the base 21 are inserted into the base seating groove 14 of the fixture 10, the screw 41 is inserted into the screw through hole 37 of the abutment projection 31. ) and rotated in one direction, the male screw pattern 45 at the end of the screw column 43 passing through the screw through holes 37, 28w, and 28s of the abutment protrusion 31 and the base 21 is the fixture It is fastened to the female screw pattern 12 of the screw hole 13 .

The screw 41 is rotated in one direction until the screw head 42 is caught on the stepped surface 29 formed on the inner circumferential surface of the screw through holes 28w and 28s of the base 21 and the screw 41 can no longer be rotated. If it continues to rotate, the healing abutment 20 is firmly fixedly coupled to the fixture 10 by the screw 41 .

A pair of direction indicating incision surfaces 35 are formed on the outer peripheral surface of the distal end of the abutment protrusion 31 at intervals of 180° about the axis AX. The direction-indicating cut surface 35 is a surface indented on the outer peripheral surface of the distal end of the exposed part 33 to be differentiated from the surrounding area. Healing abutment through the direction indicated by the direction indicating incision surface 35 when the fixture insertion portion 26 and the polygonal projection 27 of the base 21 are fitted and seated in the base seating groove 14 of the fixture 10 The installation direction of (20) is known. The exposed portion 33 and the pair of direction indicating incisions 35 are clearly visible in the oral cavity of the patient so that the exposed portion 33 is formed to have a sufficient height and long.

The healing abutment 20 is incised for tooth extraction and implantation of the fixture 10, and helps to regenerate and recover the damaged alveolar bone (1) and gum (3). In addition, in the case of manufacturing the fixed abutment 50 and the permanent dental prosthesis 60 using the scan data generated by 3D scanning the inside of the oral cavity, the healing abutment 20 fixed to the fixture 10 is provided. Even when scanned as is, image errors such as blurring or blurring due to light reflection do not occur.

Healing abutment 20 is a heterogeneous material bonding layer formed by chemical bonding of the metal material of the base 21 and the polymer resin material of the abutment projection 31 at the interface where the base 21 and the abutment protrusion 31 are combined. may be further provided. The heterogeneous material bonding layer 39 is a layer in which the base 21 and the abutment protrusion 31 are strongly coupled so as not to be separated at the interface between them, and in the dissimilar material bonding layer 39, the metal material of the base 21 and the abutment protrusion The polymer resin material of (31) is covalently bonded or ionically bonded.

The healing abutment 20 is formed by inserting the base 21 into a cavity (not shown) of a mold (not shown), injecting a molten polymer resin into the cavity, and curing the abutment protrusion 31 . may be formed by insert molding, and a metal pretreatment agent may be applied to the interface of the base 21 that is bonded to the abutment protrusion 31 to form the heterogeneous material bonding layer 39 . In addition, a polymer resin pretreatment agent and a thermal conductivity additive may be mixed in the molten polymer resin.

The healing abutment 20 may be manufactured by a method including a base forming step and an insertion injection step. The base forming step is a step of forming a base formed of a metal material. For example, the base 21 may be formed by machining such as CAD/CAM machining, or it may be formed by die-casting.

In the injection injection step, the base 21 is inserted and seated in a cavity (not shown) corresponding to the shape of the healing abutment 20 in the injection molding mold (not shown), and the molten polymer resin is injected into the cavity. It is a step of forming the abutment protrusion 31 integrally bonded to the base 21 by injection and curing. The healing abutment 20 including the abutment protrusion 31 hardened in the cavity is taken out from the injection molding mold after the upper core (not shown) and the lower core (not shown) of the injection molding mold are molded.

On the other hand, the interface of the base 21 that comes into contact with the abutment protrusion 31 before the base 21 is inserted and seated in the injection mold to form the heterogeneous material bonding layer 39, that is, the abutment protrusion junction 22 ) on the outer circumferential surface and the upper side of the flange portion 24, a liquid containing a metal pretreatment agent inducing a preferential reaction between the metal material of the base 21 and the polymer resin material of the abutment protrusion 31 may be applied. As the metal pretreatment agent, for example, a metal salt-based material containing the same component as the metal material of the base 21 may be used.

In addition, a polymer resin pretreatment agent and a thermal conductivity additive may be mixed with the molten polymer resin. The polymer resin pretreatment agent is a material that promotes interfacial bonding with the metal material of the base 21, for example, a metal salt-based material that shares a radical group belonging to the base polymer of the polymer resin material of the abutment protrusion 31. material may be used. The thermally conductive additive is a material that is added to compensate for thermal conduction of a portion in which the morphology of the polymer resin that causes substitutional bonding (sharing of free electrons) with the metal material on the surface of the base 21 through a chemical reaction is formed.

The molten polymer resin, in which the polymer resin pretreatment agent and the thermal conductive additive are mixed, is injected into the cavity of the injection molding mold and cured, while the base 21 and the abutment protrusion 31 are at the interface between the metal material and the polymer A chemical reaction occurs between the resin materials to form a heterogeneous material bonding layer 39 , and the base 21 and the abutment protrusion 31 are firmly coupled.

On the other hand, instead of the dissimilar material bonding layer 39, a dental adhesive is applied to the interface where the base 21 and the abutment protrusion 31 are combined, and a cured adhesive layer (not shown) is formed between the base 21 and the abutment protrusion ( 31) may be formed on the bonded interface. The adhesive layer may strengthen the bond between the base 21 and the abutment protrusion 31 . In order to form the adhesive layer, the interface of the base 21 that comes into contact with the abutment protrusion 31 before inserting and seating the base 21 in the injection molding mold, that is, the outer circumferential surface of the abutment protrusion joint 22 and the flange portion ( 24), a dental adhesive is applied to the upper side, and then the molten polymer resin is injection-injected into the cavity of the injection molding mold and cured.

On the other hand, a healing abutment formed only of a polymer resin material without a metal material may be fixedly installed on the fixture 10 instead of the healing abutment 20 . Specifically, the healing abutment formed only with the polymer resin material is made of a polyetheretherketone (PEEK)-based synthetic resin, a polyetherketoneketone (PEKK)-based synthetic resin, a polyethersufone (PESU)-based synthetic resin, or a polyetherimide (PEI)-based synthetic resin. can be formed.

The healing abutment formed only with the polymer resin material is provided with a fixture insertion part inserted into the fixture 10, an exposed part protruding out of the gum and exposed in the oral cavity, and a gum formation guide part between the fixture insertion part and the exposed part, , the fixture insertion part, the exposed part, and the gum formation guide part may be integrally formed. A direction indicating incision is formed on the outer peripheral surface of the distal end of the exposed portion to indicate the installation direction of the healing abutment. The healing abutment formed only from the polymer resin material has a screw through hole so that the screw penetrates the fixture insertion part, the gum formation guide part, and the exposed part to be fastened to the fixture 10 .

Before the gum regeneration 3D scan step (S30), before the gum 3 is regenerated around the healing abutment 20, 3D scan the healing abutment 20 and its surroundings to generate scan data before gum regeneration is a step to A 3D scan may be performed using a scanner (not shown) capable of scanning the inside of the oral cavity. When manufacturing the abutment for fixing 50 and the permanent dental prosthesis 60 fixed thereto based on the scan data before gum regeneration, the scan data before gum regeneration is used for fixing the abutment and permanent tooth prosthesis library (library) A process of matching with the data stored in . The direction of the direction indicating incision surface 35 shown in the scan data before gum regeneration becomes the reference direction when matching the material of the library with the healing abutment 20 installed in the oral cavity.

On the other hand, there is a case where the alveolar bone (1) at the point where the fixture (10) is to be implanted is insufficient depending on the condition of the patient. The example shown in FIG. 2 is a case in which the alveolar bone 1 of the front upper end of the fixture 10 is insufficient, and when the alveolar bone 1 is insufficient, the fixture 10 is firmly embedded in the alveolar bone 1 and is not fixed. Due to this, since the fixture 10 and the structures coupled thereto may shake or fall out during or after the dental implant procedure, in order to prevent this, the alveolar bone reinforcement step is added before the 3D scan step (S30) before gum regeneration is performed to prevent this. can be performed with

In the alveolar bone reinforcement step, the bone graft material 8 is filled into the gum 3 around the fixture 10 in order to reinforce the insufficient alveolar bone 1, and the filled bone graft material 8 is placed inside the gum 3 It is a step of suturing the gum (3) so that it is maintained and hardened without moving or dispersing. The bone graft material 8 is filled in the form of a powder so that the exposed upper end of the fixture 10 is embedded. The incised gum 3 for implantation of the fixture 10 and the replacement of the bone graft material 8 is sutured with a medical thread. The sutured gum 3 covers the alveolar bone 1 and the bone graft material 8 so that the alveolar bone 1 and the bone graft material 8 are not exposed in the oral cavity. The end of the sutured gum 3 does not extend to the extent that it covers or touches the exposed portion 33 of the healing abutment 20 . As the bone graft material 8, for example, artificial bone powder, magnetic tooth bone graft material powder, or animal bone powder may be used. The fixture placement step (S10), the healing abutment installation step (S20), the alveolar bone reinforcement step, and the 3D scan step (S30) before gum regeneration may be performed during the day the patient visits the dentist.

On the other hand, after the healing abutment 20 is installed, until the gum 2 is regenerated, the healing abutment ( A protective cap (cap) may be covered on the abutment protrusion 31 of 20).

The fixing abutment manufacturing step (S40) is a step of manufacturing the fixing abutment by 3D printing based on the scan data before the gum regeneration. The permanent dental prosthesis manufacturing step (S50) is a step of manufacturing a permanent dental prosthesis by 3D printing based on the scan data before the restoration of the gums. The scan data before gum regeneration includes information on the inclined direction and angle of the healing abutment 20 and the height of the healing abutment 20 . This information is reflected in the design of the fixing abutment 50 and the permanent dental prosthesis 60, so that the patient-specific customized fixing abutment 50 and the customized permanent dental prosthesis 60 can be manufactured.

In FIG. 1, although the permanent tooth prosthesis manufacturing step (S50) is performed after the fixing abutment manufacturing step (S40), in the first embodiment to be described below, the fixing abutment manufacturing step (S40) and the permanent Since the dental prosthesis manufacturing step (S50) is performed separately, the fixing abutment manufacturing step (S40) and the permanent dental prosthesis manufacturing step (S50) may be simultaneously performed, and the permanent dental prosthesis manufacturing step (S50) is the It may be performed before the fixing abutment manufacturing step (S40).

The fixing abutment manufacturing step (S40), the step of forming a fixing abutment modeling file (modeling file) based on CAD (computer aided design) using the information included in the scan data before the gum regeneration, and the fixing and manufacturing the abutment 50 for fixing through 3D printing using the abutment modeling file. The 3D printing may be, for example, direct energy deposition (DED) in which a fixing abutment 50 is formed by supplying a material made of a metal powder such as titanium (Ti) or a titanium alloy and simultaneously melting and laminating with a laser. However, 3D printing is not limited to DED and may be 3D printing of another method such as, for example, power bed fusion (PBF).

In the conventional method of manufacturing a fixed abutment by cutting the intermediate material for a fixed abutment based on CAM, the manufacturing cost of the fixed abutment 50 is high, and the quality However, in the present invention, the fixing abutment 50 is manufactured through 3D printing, so the manufacturing cost is reduced and the quality is improved.

The fixing abutment 50 includes a prosthesis insertion portion 52 fitted to the permanent tooth prosthesis 60, a fixture insertion portion fitted to the fixture 10 (not shown), and a prosthesis insertion portion 52 and fixture insertion. and intermediate portions 55 between the portions. The shape of the middle part 65 is the shape of the regenerated gum tip 5 and the gum tip 5 so that it can be inserted into the gum 3 (refer to FIG. 5) through the regenerated gum tip 5 without a foreign body feeling. ) to the fixture 10 can be designed in harmony with the depth. In other words, the outer periphery edge line of the stepped surface 56 extending the outer diameter, which is the boundary between the intermediate portion 55 and the prosthesis insertion portion 52, is the line of the regenerated gum end 5. can be designed to match. Then, since all parts of the intermediate part 65 are hidden inside the regenerated gum 3 , the permanent dental prosthesis 60 covered on the fixing abutment 50 cannot be easily distinguished from the natural teeth.

The scan data before gum regeneration does not contain information about the line of the gum end 5 that has been actually regenerated over time after the installation of the healing abutment 20, but the teeth adjacent to the healing abutment 20 in the oral cavity; and information on the distal line of the uncut gum covering the adjacent tooth. Therefore, when the model of the fixing abutment extracted from the library of the fixing abutment is modified to suit the patient in consideration of the above information, the outer peripheral edge line of the step surface 56 is regenerated with the line of the gum end 5 and Matched or nearly matched anchoring abutment modeling files can be created.

The permanent dental prosthesis manufacturing step (S50) includes forming a permanent dental prosthesis modeling file based on CAD using information included in the scan data before gum regeneration, and 3D printing using the permanent dental prosthesis modeling file. and manufacturing a permanent dental prosthesis (60). The permanent tooth prosthesis 60 may be made of, for example, a metal such as a gold (Au) alloy, a platinum (Pt) alloy, or a ceramic (ceramic).

Similar to the 3D printing of the fixing abutment 50 , the 3D printing of the permanent dental prosthesis 60 also supplies a material of a metal powder such as, for example, a gold (Au) alloy, a platinum (Pt) alloy, etc. It may be a DED that is melted and laminated with a furnace, or a power bed fusion (PBF). When the permanent dental prosthesis 60 is formed of ceramic, the multi-layered permanent dental prosthesis ( 60), or by printing and laminating a ceramic composition in multiple layers and plastically curing it, the permanent dental prosthesis 60 may be formed.

The size and shape of the permanent tooth prosthesis 60 is designed to match the size, shape, and protrusion direction of the surrounding teeth (not shown) of the fixing abutment 50 to be implanted in the fixture 10 . The fixing abutment fitting groove 62 of the permanent tooth prosthesis 60 is designed to a size that the prosthesis insertion part 62 of the fixing abutment 50 can be sufficiently accommodated in the fixing abutment fitting groove 62, and , the permanent tooth prosthesis 60 is designed to have an appropriate size and shape so as not to rotate with respect to the prosthesis insertion part 52 while being covered with the prosthesis insertion part 52 .

In the fixing abutment and permanent tooth prosthesis installation step (S60), after the gum 3 is regenerated around the healing abutment 20, the healing abutment 20 is removed from the fixture 10, and the fixing abutment (50) and the permanent dental prosthesis (60) is a step of fixed installation to the fixture (10). Reference numeral '5' in FIG. 2 indicates the outline of the regenerated gum distal end. The regenerated gum end 5 is brought into contact with the gum regeneration guide portion 32 of the healing abutment 20 by regenerative growth over time.

Specifically, the fixing abutment and permanent dental prosthesis installation step (S60) includes a healing abutment removal step, a fixing abutment fixing step, and a permanent dental prosthesis fixing step. The healing abutment removal step is to separate the healing abutment 20 from the fixture 10 by turning the screw 41 for fixing the healing abutment 20 to the fixture 10 in the opposite direction to the tightening direction and fixing the fixture (10) It is a step to remove and remove. The fixing abutment fixing step includes inserting the fixture insertion part (not shown) of the fixing abutment 50 into the fixture 10, and tightening the screw (not shown) to fix the fixing abutment 50 to the fixture 10 It is a step to be fixedly coupled to the The permanent tooth prosthesis fixing step is a step of fixing the permanent tooth prosthesis 60 to the fixing abutment 50 through a dental cement (not shown). In other words, the dental cement is applied to the inner circumferential surface of the fixing abutment fitting groove 62 of the permanent tooth prosthesis 60, and the permanent tooth prosthesis 60 is inserted into the prosthesis insertion part 52 of the fixing abutment 50. put on When the dental cement is hardened, the permanent dental prosthesis 60 is fixedly coupled to the fixing abutment 50 .

The permanent dental prosthesis 60 shown in FIG. 3 is a crown corresponding to one tooth removed or lost, but is not limited thereto, and the permanent dental prosthesis of the present invention is adjacent to a plurality of teeth removed or lost It may be a corresponding bridge.

On the other hand, the dental implant treatment method of the present invention may include a fixing abutment manufacturing step and a permanent dental prosthesis manufacturing step different from those described above. As an example, the fixing abutment manufacturing step produces a fixing abutment by 3D printing based on the scan data before gum regeneration like the above-described S40, but the permanent tooth prosthesis manufacturing step is 3D printing on the fixing abutment produced by the 3D printing. It may include the step of forming a permanent dental prosthesis integrally coupled to the fixing abutment by stacking the material of the permanent dental prosthesis. In this case, the step of manufacturing the permanent dental prosthesis is necessarily performed after the step of manufacturing the fixing abutment. In addition, the healing abutment and permanent tooth prosthesis installation step ends only with the operation of fitting the fixture insertion part of the fixing abutment to the fixture. Since the step of coupling the fixing abutment and the permanent dental prosthesis through the dental cement is not provided, the installation step of the fixing abutment and the permanent dental prosthesis can be completed more quickly.

As another example, when the fixing abutment and the permanent tooth prosthesis are made of the same metal powder material, the fixing abutment manufacturing step and the permanent tooth prosthesis manufacturing step are performed together so that the fixing abutment and the permanent tooth prosthesis are integrally formed. can be In other words, the metal material is laminated one by one through 3D printing to form an artificial tooth in which the fixing abutment and the permanent dental prosthesis are integrally connected. or may be laminated in the reverse order. In this case, the step of installing the healing abutment and the permanent tooth prosthesis ends only with the operation of fitting and fixing the part of the artificial tooth corresponding to the fixture insertion part of the fixing abutment to the fixture. Since the step of coupling the fixing abutment and the permanent dental prosthesis through the dental cement is not provided, the installation step of the fixing abutment and the permanent dental prosthesis can be completed more quickly.

According to the dental implant treatment method using the 3D scan described above, 3D scan data before gum regeneration generated by 3D scanning the inside of the oral cavity before the gum 3 is regenerated while the healing abutment 20 is fixed to the fixture 10 Using 3D printing to produce a fixed abutment 50 and a permanent dental prosthesis 60, and when the gums are regenerated, immediately remove the healing abutment 20 from the fixture 10 and the fixed abutment 50 By fixing and installing the permanent dental prosthesis 60 to the fixture, it is possible to significantly shorten the dental implant operation period and reduce the dental implant operation cost. In addition, since clear 3D scan data can be obtained through 3D scan without putting a scan cap on the healing abutment 20 or applying a polish remover, dental implant operation is facilitated and costs are reduced.

On the other hand, in the dental implant treatment method of the present invention, after the 3D scan step (S30) before the regeneration of the gums, when the end (5) of the gum is regenerated around the healing abutment (20), the end (5) of the regenerated gum A 3D scan step after gum regeneration to generate scan data after gum regeneration by 3D scanning may be further provided. In this case, the fixing abutment production step (S40) is based on the scan data before the gum regeneration and additionally referring to the scan data after the gum regeneration with 3D printing to produce the fixing abutment 50 be prepared In addition, the permanent dental prosthesis manufacturing step (S50) includes the steps of manufacturing the permanent dental prosthesis 60 by 3D printing by additionally referring to the scan data after the gum regeneration along with the scan data before the gum regeneration. be prepared

In the 3D scan step after the gum regeneration, as in the 3D scan step (S30) before the gum regeneration, a 3D scan is performed using a scanner (not shown) capable of scanning the inside of the oral cavity. The scan data after gum regeneration includes information on the distal end 5 of the regenerated gum around the healing abutment 20 . In this case, by using the scan data before gum regeneration and the scan data after gum regeneration together, a precise patient-customized fixing abutment 50 and permanent tooth prosthesis 60 that more accurately match the patient's regenerated gum line can be manufactured. . Therefore, the durability of the fixed abutment 50 and the permanent dental prosthesis 60 installed in the patient is improved, and a comfortable feeling can be given to the patient without any sense of discomfort.

Although the present invention has been described with reference to the embodiments shown in the drawings, which are merely exemplary, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Accordingly, the true scope of protection of the present invention should be defined only by the appended claims.

1: Alveolar bone 3: Gum
10: Fixture 20: Healing Abutment
21: base 31: abutment projection
50: fixed abutment 60: permanent tooth prosthesis

Claims (5)

Fixture placement step of implanting and fixing the fixture to the alveolar bone;
A fixture insertion part inserted into the fixture, an exposed part protruding out of the gum and exposed in the oral cavity, and a gum regeneration guide part between the fixture insertion part and the exposed part, wherein the light reflection of the exposed part is smaller than the light reflection of the metal Healing abutment installation step of fixedly installing a healing abutment (healing abutment) capable of 3D scan (3 digit scan) to the fixture;
Before the gums are regenerated around the healing abutment, 3D scanning the healing abutment and its surroundings to generate scan data before gum regeneration by 3D scanning the gums before regenerating the gums;
A fixing abutment production step of producing a fixing abutment by 3D printing (printing) based on the scan data before the gum regeneration;
A permanent dental prosthesis manufacturing step of manufacturing a permanent dental prosthesis by 3D printing based on the scan data before the regeneration of the gums; and,
After the gum is regenerated around the healing abutment, removing the healing abutment from the fixture, and installing the fixing abutment and permanent tooth prosthesis to fix the fixing abutment and the permanent tooth prosthesis to the fixture; Characterized in, a dental implant procedure using a 3D scan. The method of claim 1,
The fixing abutment manufacturing step and the permanent tooth prosthesis manufacturing step are performed separately,
The fixing abutment and permanent tooth prosthesis installation step includes a healing abutment removal step of removing the healing abutment from the fixture, a fixing abutment fixing step of fixing and coupling the fixing abutment to the fixture, dental cement A dental implant procedure using a 3D scan, characterized in that it comprises the step of fixing the permanent dental prosthesis by covering the permanent dental prosthesis on the fixing abutment as a medium. The method of claim 1,
The permanent dental prosthesis manufacturing step comprises the step of forming a permanent dental prosthesis integrally coupled to the fixing abutment by laminating the material of the permanent dental prosthesis by 3D printing on the fixing abutment, Dental implant treatment method using 3D scan. The method of claim 1,
The fixing abutment and the permanent dental prosthesis are made of the same material material,
A dental implant procedure using a 3D scan, characterized in that the fixing abutment manufacturing step and the permanent dental prosthesis manufacturing step are performed together so that the fixing abutment and the permanent dental prosthesis are integrally formed. The method of claim 1,
The dental implant treatment method using the 3D scan is, after the 3D scan step before the gum regeneration, when the end of the gum is regenerated around the healing abutment, the end of the regenerated gum is 3D scanned to generate the scan data after the gum regeneration 3D scanning step after gum regeneration; further comprising,
The fixing abutment manufacturing step comprises the steps of producing the fixing abutment by 3D printing by additionally referring to the scan data after the gum regeneration together with the basis of the scan data before the gum regeneration,
The manufacturing of the permanent dental prosthesis comprises manufacturing the permanent dental prosthesis by 3D printing by additionally referring to the scan data after the restoration of the gums along with the scan data before the restoration of the gums. A dental implant procedure using a scan.

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