CN108742905B - Steel wire bending snap ring and bracket wax mold integral casting process - Google Patents
Steel wire bending snap ring and bracket wax mold integral casting process Download PDFInfo
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- CN108742905B CN108742905B CN201810684615.9A CN201810684615A CN108742905B CN 108742905 B CN108742905 B CN 108742905B CN 201810684615 A CN201810684615 A CN 201810684615A CN 108742905 B CN108742905 B CN 108742905B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/20—Methods or devices for soldering, casting, moulding or melting
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/34—Making or working of models, e.g. preliminary castings, trial dentures; Dowel pins [4]
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- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Prosthetics (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The invention discloses a steel wire bending snap ring and bracket wax mold integral casting process, which mainly comprises the following steps: the method comprises the following steps: manufacturing a support; step two: manufacturing a snap ring arm; step three: fixedly connecting, embedding and casting; the invention has the advantages that: the bent clamping ring and the casting bracket are firmly and tightly connected, so that the risk of falling and breaking of the bent clamping ring is greatly reduced; the casting support is conveniently designed, polished and finally repaired, the service life is prolonged, and the repair rate is reduced.
Description
Technical Field
The invention relates to the technical field of oral restoration, in particular to a process for integrally casting a snap ring and a bracket wax pattern by bending a steel wire.
Background
The removable partial denture is a prosthesis which can be automatically removed and worn by a patient and is used for partial tooth loss (dentition defect). The false tooth is mainly characterized in that the position of the false tooth in the dentition is kept through a fixing device such as a snap ring fixed on the residual natural teeth and a base, and the natural teeth and the residual alveolar ridge of the edentulous area are used as supports to recover the anatomical morphology and physiological function of the missing teeth and the peripheral defective tissues thereof
The removable partial denture has wide adaptation certificate and very large market space, and most doctors adopt light and firm casting brackets for repair in the removable partial denture repair process, but the requirement of a clamping ring part of the casting bracket on the conditions of the abutment is very high, so the clamping ring needs to be matched with a bent clamping ring for use when the casting bracket process is carried out, the clamping ring, the casting bracket and the abutment connecting part are easy to break all the time, and the manufacturing qualification rate of the removable denture is low; the traditional clamp ring process adopts an electric soldering mode, and is complicated and rough, the bracket clamp ring has small connection strength, the welding is not solid, and the falling rate is high.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a process for integrally casting a retainer ring and a bracket wax pattern by bending a steel wire.
The technical scheme adopted by the invention is as follows: the integral casting process of the steel wire bending snap ring and the bracket wax mold is characterized in that: manufacturing a bent clamping ring by adopting a stainless steel wire, embedding the bent clamping ring into a wax pattern of a casting support, wrapping the bent clamping ring by base resin, and melting the bent clamping ring into the base resin to be connected into a whole in the melting process of the casting support, so that the bent clamping ring and the casting support are firmly and tightly connected; the method comprises the following steps:
the method comprises the following steps: support for making
The support comprises a first support and a second support, the abutment comprises a first abutment and a second abutment, a section of 19 # stainless steel wire is taken, a sharp-pointed pliers is used for bending an obtuse angle according to the length of a first abutment support recess, the height of a first abutment crown is horizontally bent to form an obtuse angle at a position 1mm away from a ridge top of a tooth socket, and then the height is reduced by 2-3 mm according to the distance between the near and far of an edentulous gap and bent upwards to form an obtuse angle so as to form the first support;
repeating the steps to manufacture a second bracket of the second abutment, breaking the stainless steel wires in the middle of the first bracket and the second bracket, and placing the stainless steel wires on a model to check whether the stainless steel wires meet the requirements;
after the support is proper, the support is placed on a small iron stirrup and hammered flat, and the support is ground smoothly by using sandstone, so that the support is attached to the support concave.
Step two: making snap ring arms
The clamp ring arm comprises a left clamp ring arm and a right clamp ring arm, a section of No. 20 stainless steel wire is taken, and the No. 20 stainless steel wire is bent from the right to the left; clamping the top end of the No. 20 stainless steel wire by using a forceps head, gradually bending the top end into the radian of a clamping ring to be attached to the dental crown of an abutment, clamping the body part of the clamping ring by using a forceps back, and pressing one side of the No. 20 stainless steel wire to enable the included angle between one side of the No. 20 stainless steel wire and the forceps back to be 90 degrees; clamping the clamp ring body by using a tong head, pressing the other side of the No. 20 stainless steel wire, and bending the other side of the No. 20 stainless steel wire downwards to form an angle of 45 degrees;
the small connector is 1mm away from the crest of the alveolar ridge and 2mm away from the gum end of the abutment, and the small connector is clamped by a forceps head and bent into an obtuse angle along the direction parallel to the clamping ring arm;
bending the left clamp ring arm, reducing the distance between the near and far edentulous gaps by 2-3 mm, bending the right end into an obtuse angle, determining the position of the body part turning according to the height of the dental crown, clamping by using a forceps head, pressing the No. 20 stainless steel wire, bending downwards and outwards into an angle of 45 degrees, clamping the turning part in the body part by using the forceps head, pulling the No. 20 stainless steel wire to bend upwards into the required radian of the clamp ring arm, placing on a model to check whether the radian meets the requirement, and rolling and breaking after being suitable; then, manufacturing the right snap ring arm according to the steps, putting the right snap ring arm on a model to check whether the right snap ring arm meets the requirements, and rolling and breaking the right snap ring arm after the right snap ring arm is suitable; the support bracket is connected with the clamping ring arm to form a bent clamping ring;
step three: fixed connection, embedding fusion casting
After the bending is finished, the bending clamp ring is connected and fixed with the wax pattern of the casting bracket, the bending clamp ring is embedded into the wax pattern of the casting bracket and then wrapped by base resin, and the bending clamp ring is melted into the casting bracket in the melting process of the casting bracket to be connected into a whole, so that the bending clamp ring and the casting bracket are firmly and tightly connected;
furthermore, the snap rings of the front abutment and the rear abutment can be bent into single-arm snap rings respectively, the small connector is broken in the middle of the tooth missing area in a rolling way, and then the small connector supported by the snap ring arms is welded into a whole by using soldering tin;
furthermore, the buccal side retaining ring arm can be bent firstly, the lingual side small connector is bent secondly, a section of 20 # steel wire is taken, the section is bent into a proper radian according to the buccal surface form of the dental crown of the abutment, the model is tried to check whether the steel wire is tightly fit with the dental crown or not, then according to the height of the dental crown, the steel wire is bent into a 90-degree angle and tightly fit with the clearance groove, then the steel wire is bent downwards to the lingual side into an obtuse angle according to the length of the clearance groove, the steel wire is bent forwards at a position 5mm away from the gingival margin and extends to a tooth lacking area, the small connector is uniformly separated from the gingival tissue by 0.5 mm, and the small connector is fixedly connected with the wax model of the casting bracket after being bent;
furthermore, the bent clamping ring is made of a round stainless steel wire, and the diameter of the stainless steel wire is 0.9mm-1.0 mm.
Furthermore, the right side snap ring arm is either a tongue side snap ring arm or a neck side snap ring arm.
The invention has the beneficial effects that: the bent clamping ring and the casting bracket are firmly and tightly connected, so that the risk of falling and breaking of the bent clamping ring is greatly reduced; the casting support is conveniently designed, polished and finally repaired, the service life is prolonged, and the repair rate is reduced.
Detailed Description
In order to understand the technical solution of the present invention more clearly, the present invention is further explained below.
A process for integrally casting a retainer ring and a bracket wax pattern by bending a steel wire,
the first embodiment is as follows: bending three-arm card with 75-as base tooth
Manufacturing a bent clamping ring by adopting a stainless steel wire, embedding the bent clamping ring into a wax pattern of a casting support, wrapping the bent clamping ring by base resin, and melting the bent clamping ring into the base resin to be connected into a whole in the melting process of the casting support, so that the bent clamping ring and the casting support are firmly and tightly connected; the method comprises the following steps:
the method comprises the following steps: support for making
The support comprises a first support and a second support, the abutment comprises a first abutment and a second abutment, a section of 19 # stainless steel wire is taken, a sharp-pointed pliers is used for bending an obtuse angle according to the length of a first abutment support recess, the height of a first abutment crown is horizontally bent to form an obtuse angle at a position 1mm away from a ridge top of a tooth socket, and then the height is reduced by 2-3 mm according to the distance between the near and far of an edentulous gap and bent upwards to form an obtuse angle so as to form the first support;
repeating the steps to manufacture a second bracket of the second abutment, breaking the stainless steel wires in the middle of the first bracket and the second bracket, and placing the stainless steel wires on a model to check whether the stainless steel wires meet the requirements;
after the support is proper, the support is placed on a small iron stirrup and hammered flat, and the support is ground smoothly by using sandstone, so that the support is attached to the support concave.
Step two: making snap ring arms
The clamp ring arm comprises a left clamp ring arm and a right clamp ring arm, a section of No. 20 stainless steel wire is taken, and the No. 20 stainless steel wire is bent from the right to the left; clamping the top end of the No. 20 stainless steel wire by using a forceps head, gradually bending the top end into the radian of a clamping ring to be attached to the dental crown of an abutment, clamping the body part of the clamping ring by using a forceps back, and pressing one side of the No. 20 stainless steel wire to enable the included angle between one side of the No. 20 stainless steel wire and the forceps back to be 90 degrees; clamping the clamp ring body by using a tong head, pressing the other side of the No. 20 stainless steel wire, and bending the other side of the No. 20 stainless steel wire downwards to form an angle of 45 degrees;
the small connector is 1mm away from the crest of the alveolar ridge and 2mm away from the gum end of the abutment, and the small connector is clamped by a forceps head and bent into an obtuse angle along the direction parallel to the clamping ring arm;
bending the left clamp ring arm, reducing the distance between the near and far edentulous gaps by 2-3 mm, bending the right end into an obtuse angle, determining the position of the body part turning according to the height of the dental crown, clamping by using a forceps head, pressing the No. 20 stainless steel wire, bending downwards and outwards into an angle of 45 degrees, clamping the turning part in the body part by using the forceps head, pulling the No. 20 stainless steel wire to bend upwards into the required radian of the clamp ring arm, placing on a model to check whether the radian meets the requirement, and rolling and breaking after being suitable; then, manufacturing the right side snap ring arm according to the steps, putting the right side snap ring arm on a model to check whether the right side snap ring arm meets the requirements, and rolling off the right side snap ring arm after the right side snap ring arm is suitable, wherein the right side snap ring arm is either a tongue side snap ring arm or a neck side snap ring arm; the support bracket is connected with the clamping ring arm to form a bent clamping ring;
step three: fixed connection, embedding fusion casting
After the bending is finished, the bending clamping ring is connected and fixed with the wax pattern of the casting support, the bending clamping ring is embedded into the wax pattern of the casting support and then wrapped by base resin, and the bending clamping ring is melted into the base resin and connected into a whole in the melting process of the casting support, so that the bending clamping ring and the casting support are firmly and tightly connected.
The bent snap ring manufactured in the steps is suitable for the condition that the front and the back of the edentulous area are provided with abutment supports, and the snap rings of the front abutment and the back abutment are connected.
Example two: bending the single-arm card with 75-as the base tooth
The snap rings of the front abutment and the rear abutment can be bent into single-arm snap rings respectively, the small connector is broken in the middle of the tooth missing area in a rolling mode, and then the small connector supported by the snap ring arms is welded into a whole through soldering tin.
Example three: bending clearance card with-45 as abutment
The buccal side snap ring arm can be bent firstly and the little disjunctor of tongue side is bent afterwards, it is one section to get 20 # steel wires, according to abutment tooth crown buccal surface form, bend into suitable radian earlier, try on the model, whether the inspection is with the tooth crown driving fit, according to the height of tooth crown again, the steel wire bends into 90 jiaos and with clearance ditch driving fit, then according to clearance ditch length, bend the steel wire to the tongue side down into the obtuse angle, bend the steel wire forward and extend to lacking the tooth district at distance gingival margin 5mm department, little connector should evenly leave gingival tissue 0.5 mm, after the bending is accomplished with casting support wax pattern fixed connection, then embedding fusion casting.
And selecting an appropriate snap ring type according to the condition position of the abutment, finishing the connection and fixation with the bracket wax pattern after the bending is finished, and then embedding and casting.
In the preferred embodiment, the bent clamping ring is made of a round stainless steel wire, the diameter of the stainless steel wire is 0.9-1.0 mm, the elasticity is high, the bent clamping ring can be adjusted and changed, the operation is simple, the bent clamping ring is economical and durable, and the force application to the abutment is low.
The bent clamping ring and the casting bracket are firmly and tightly connected, so that the risk of falling and breaking of the bent clamping ring is greatly reduced; the casting support is conveniently designed, polished and finally repaired, the service life is prolonged, and the repair rate is reduced.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.
Claims (3)
1. The integral casting process of the steel wire bending snap ring and the bracket wax mold is characterized in that: manufacturing a bent clamping ring by adopting a stainless steel wire, embedding the bent clamping ring into a wax pattern of a casting support, wrapping the bent clamping ring by base resin, and melting the bent clamping ring into the base resin to be connected into a whole in the melting process of the casting support, so that the bent clamping ring and the casting support are firmly and tightly connected; the method comprises the following steps:
the method comprises the following steps: support for making
The support comprises a first support and a second support, the abutment comprises a first abutment and a second abutment, a section of 19 # stainless steel wire is taken, a sharp-pointed pliers is used for bending an obtuse angle according to the length of a first abutment support recess, the height of a first abutment crown is horizontally bent to form an obtuse angle at a position 1mm away from a ridge top of a tooth socket, and then the height is reduced by 2-3 mm according to the distance between the near and far of an edentulous gap and bent upwards to form an obtuse angle so as to form the first support;
repeating the steps to manufacture a second bracket of the second abutment, breaking the stainless steel wires in the middle of the first bracket and the second bracket, and placing the stainless steel wires on a model to check whether the stainless steel wires meet the requirements;
when the support is proper, the support is placed on a small iron stirrup and hammered flat, and the support is ground smoothly by sandstone, so that the support is attached to the support concave;
step two: making snap ring arms
The clamp ring arm comprises a left clamp ring arm and a right clamp ring arm, a section of No. 20 stainless steel wire is taken, and the No. 20 stainless steel wire is bent from the right to the left; clamping the top end of the No. 20 stainless steel wire by using a forceps head, gradually bending the top end into the radian of a clamping ring to be attached to the dental crown of an abutment, clamping the body part of the clamping ring by using a forceps back, and pressing one side of the No. 20 stainless steel wire to enable the included angle between one side of the No. 20 stainless steel wire and the forceps back to be 90 degrees; clamping the clamp ring body by using a tong head, pressing the other side of the No. 20 stainless steel wire, and bending the other side of the No. 20 stainless steel wire downwards to form an angle of 45 degrees;
the small connector is 1mm away from the crest of the alveolar ridge and 2mm away from the gum end of the abutment, and the small connector is clamped by a forceps head and bent into an obtuse angle along the direction parallel to the clamping ring arm;
bending the left clamp ring arm, reducing the distance between the near and far edentulous gaps by 2-3 mm, bending the right end into an obtuse angle, determining the position of the body part turning according to the height of the dental crown, clamping by using a forceps head, pressing the No. 20 stainless steel wire, bending downwards and outwards into an angle of 45 degrees, clamping the turning part in the body part by using the forceps head, pulling the No. 20 stainless steel wire to bend upwards into the required radian of the clamp ring arm, placing on a model to check whether the radian meets the requirement, and rolling and breaking after being suitable; then, manufacturing the right snap ring arm according to the steps, putting the right snap ring arm on a model to check whether the right snap ring arm meets the requirements, and rolling and breaking the right snap ring arm after the right snap ring arm is suitable; the support bracket is connected with the clamping ring arm to form a bent clamping ring;
step three: fixed connection, embedding fusion casting
After the bending is finished, the bending clamping ring is connected and fixed with the wax pattern of the casting support, the bending clamping ring is embedded into the wax pattern of the casting support and then wrapped by base resin, and the bending clamping ring is melted into the base resin and connected into a whole in the melting process of the casting support, so that the bending clamping ring and the casting support are firmly and tightly connected.
2. The process of claim 1, wherein the process comprises the steps of: the bent clamping ring is made of a round stainless steel wire, the diameter of the stainless steel wire is 0.9-1.0 mm, the elasticity is large, the bending clamp ring can be adjusted and changed, the operation is simple, the bending clamp ring is economical and durable, and the force application to the abutment is small.
3. The process of claim 1, wherein the process comprises the steps of: the right side snap ring arm is either a tongue side snap ring arm or a neck side snap ring arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810684615.9A CN108742905B (en) | 2018-06-28 | 2018-06-28 | Steel wire bending snap ring and bracket wax mold integral casting process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810684615.9A CN108742905B (en) | 2018-06-28 | 2018-06-28 | Steel wire bending snap ring and bracket wax mold integral casting process |
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| CN108742905A CN108742905A (en) | 2018-11-06 |
| CN108742905B true CN108742905B (en) | 2021-02-02 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4483677A (en) * | 1981-09-18 | 1984-11-20 | Kulwiec Leonard J | Flexible clasp for a removable partial dental prosthesis and method of formation of a combined flexible clasp and stress relieving prosthesis |
| CN102178563A (en) * | 2011-03-10 | 2011-09-14 | 哈尔滨医科大学 | Orthodontic molar C-shaped open band ring and manufacturing method thereof |
| CN103251460A (en) * | 2013-06-05 | 2013-08-21 | 上海上远齿科技术有限公司 | Pure titanium removable denture bracket with vitallium clasp and preparation method thereof |
| KR101487216B1 (en) * | 2014-06-20 | 2015-01-29 | 조용문 | A partial Denture and Method for manufacturing thereof |
| CN107854187A (en) * | 2018-01-03 | 2018-03-30 | 程昕 | A kind of removable denture technique makes and method |
-
2018
- 2018-06-28 CN CN201810684615.9A patent/CN108742905B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4483677A (en) * | 1981-09-18 | 1984-11-20 | Kulwiec Leonard J | Flexible clasp for a removable partial dental prosthesis and method of formation of a combined flexible clasp and stress relieving prosthesis |
| CN102178563A (en) * | 2011-03-10 | 2011-09-14 | 哈尔滨医科大学 | Orthodontic molar C-shaped open band ring and manufacturing method thereof |
| CN103251460A (en) * | 2013-06-05 | 2013-08-21 | 上海上远齿科技术有限公司 | Pure titanium removable denture bracket with vitallium clasp and preparation method thereof |
| KR101487216B1 (en) * | 2014-06-20 | 2015-01-29 | 조용문 | A partial Denture and Method for manufacturing thereof |
| CN107854187A (en) * | 2018-01-03 | 2018-03-30 | 程昕 | A kind of removable denture technique makes and method |
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| CN108742905A (en) | 2018-11-06 |
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