CN112914775B - Digital preparation method of intraoral protection device for dental trauma fixation - Google Patents
Digital preparation method of intraoral protection device for dental trauma fixation Download PDFInfo
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- CN112914775B CN112914775B CN202110188253.6A CN202110188253A CN112914775B CN 112914775 B CN112914775 B CN 112914775B CN 202110188253 A CN202110188253 A CN 202110188253A CN 112914775 B CN112914775 B CN 112914775B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/06—Implements for therapeutic treatment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
- A61C9/0006—Impression trays
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
- A61C9/004—Means or methods for taking digitized impressions
- A61C9/0046—Data acquisition means or methods
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
- A61C9/004—Means or methods for taking digitized impressions
- A61C9/0046—Data acquisition means or methods
- A61C9/0053—Optical means or methods, e.g. scanning the teeth by a laser or light beam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
Abstract
The present disclosure provides a digital preparation method of an intraoral protection device for fixing dental trauma, comprising: acquiring digital single jaw dentition impression data of the trauma affected tooth, and performing data modeling; 3D printing is carried out after data modeling to obtain a single-jaw dentition model; adopting a double-sided interlayer membrane to press the film of the single-jaw dentition model to obtain the full dentition
The pad serves as an intraoral protection device for the fixation of dental trauma. The method adopts the digital impression and the 3D printing technology, avoids iatrogenic damage of the traumatic teeth caused by the traditional preparation method, saves the fussy steps of tray selection, impression material blending, plaster pouring and model finishing, simplifies the preparation process and saves the cost; the accuracy of the digital impression technology is higher than that of an alginate impression material, the success rate is high, the model can be printed immediately by using scanning data after being damaged, repeated intraoral operation is not needed, the patient experiences good medical experience, medical waste is reduced, and the environment is protected.
Description
Technical Field
The disclosure relates to the technical field of oral cavity digitization and 3D printing, in particular to a digital preparation method of an oral protection device for fixing tooth trauma.
Background
An oral fixing and protecting device used in the treatment of dental trauma is a whole dentition for fixing the dental trauma
The pad is made of a double-sided interlayer material with the thickness of 1.8-2.5mm, one side of the double-sided interlayer material is soft, and the double-sided interlayer material is used as a pad
The tissue surface of the pad is made of polycarboxylate material; the other side is hard and adopts polyacrylate material. The oral protection device for fixing the tooth trauma is different from the traditional orthodontics, surgery or repair
The pad can be independently used for the fixation after the reduction of the subluxation and the partial dislocation of the mixed dentition tooth trauma, the partial dislocation, the full dislocation and the constant dentition tooth, and can also be used as an auxiliary fixation device after the reduction of other types of dentition trauma (such as lateral displacement, contusion and the like). When the adjacent teeth of the injured teeth are missing, the eruption height of the crowns of the young permanent teeth is insufficient, or due to mistake
The presence of deformities, such as temporary deep draping often seen in child development
And occlusion wounds and the like, other fixing modes cannot be adopted, and the oral protection device for fixing the dental trauma is adopted as an optimal treatment scheme.
The manufacturing method of the intraoral protection device for fixing the tooth trauma in the prior art comprises the following steps:
step 1: restoring and temporarily fixing the traumatic teeth; the step is a necessary step at the present stage, and can reduce the degree of the displacement or the extrusion of the trauma tooth caused by the traditional impression preparation;
step 2: selecting a tray with a proper size;
and step 3: preparing an alginate impression material, and taking a monomandibular dentition alginate impression;
and 4, step 4: taking down the impression and casting a hard gypsum model;
and 5: after the gypsum model is hardened, taking down the gypsum model and carrying out model finishing;
step 6: selecting a double-sided interlayer membrane which is generally polyacrylate/polycarboxylate, and pressing a membrane by a hot-pressing forming machine to obtain an intraoral protection device for fixing the dental trauma;
and 7: disinfection, polishing and fitting.
The manufacturing method of the oral protection device for fixing the tooth trauma has the following defects:
1. when the intraoral impression tray is taken down, trauma loosening and displacement or falling-off of an affected tooth can be caused, and iatrogenic injury is caused;
2. when the oral cavity is used for taking a model, the patient with the tooth trauma of the oral cavity, the jaw and the face soft tissue injury can be painful due to the fact that the mouth lip and the tray need to be pulled to be in place to press the gum and the like; the alginate with fluidity or the stimulation of the edge of the tray can cause nausea, discomfort, tooth sensitivity and even dyspnea of patients, and if the pharyngeal reflex is obvious or children patients have short esophagus, the children patients can vomit, thereby causing the risks of choking, choking and the like;
3. the steps of temporarily fixing the traumatic teeth, selecting a tray, mixing impression materials, pouring plaster and finishing a model are relatively complicated, and the operation time beside a clinical chair is long;
4. if the position of a patient is changed or the tray is unreasonably selected when alginate is solidified due to poor matching when the patient takes a die, or the model is damaged in the manufacturing process of the intraoral protection device for fixing the dental trauma, the repeated operation needs to be carried out in the mouth of the patient, and materials such as impression materials, plaster and the like cannot be repeatedly utilized, so that a large amount of medical waste is generated, and medical resources are wasted.
Therefore, how to optimize and improve the preparation of the oral protection device for fixing the tooth trauma in the prior art is a problem which needs to be solved urgently.
Disclosure of Invention
Technical problem to be solved
In view of the above problems, the present disclosure provides a digital preparation method of an intraoral protection device for fixing dental trauma.
(II) technical scheme
According to one aspect of the present disclosure, there is provided a digital preparation method of an intraoral protection device for dental trauma fixation, comprising: acquiring digital single jaw dentition impression data of the trauma affected tooth, and performing data modeling; 3D printing is carried out on the impression data of the single-jaw dentition after data modeling to obtain a single-jaw dentition model; adopting a double-sided interlayer membrane to carry out film pressing on the single-jaw dentition model to obtain a full dentition
The pad serves as an intraoral protection device for the fixation of dental trauma.
According to an embodiment of the disclosure, the acquiring and data modeling of the digitized monoschiotomy impression data of the trauma affected tooth comprises: scanning the single-jaw dentition where the externally injured and affected teeth are located by adopting an oral scanner to obtain stl format single-jaw dentition impression data; and performing data modeling on the single-jaw dentition impression data in the stl format, and slicing the built data model to generate the single-jaw dentition impression data in the cli format.
According to an embodiment of the disclosure, the 3D printing of the modeled data of the impression data of the single-jaw dentition to obtain the single-jaw dentition model includes: and 3D printing by using a 3D printer by using photosensitive resin as a printing material according to the single-jaw dentition impression data in the cli format to obtain a single-jaw dentition model.
According to the embodiment of the disclosure, the single-jaw dentition model is subjected to film pressing by adopting the double-sided interlayer membrane to obtain the full dentition
The pad as an intraoral protection device for the fixation of dental trauma comprises: selecting a soft-hard double-sided interlayer membrane, wherein the soft side is a polycarboxylate material and is a tissue side of the polycarboxylate material, and the hard side on the other side is a polyacrylate material;placing the soft surface of the soft and hard double-sided interlayer membrane on a single jaw dentition model in a downward mode, carrying out hot pressing by adopting a full-automatic positive pressure film pressing machine, and carrying out press forming when the center of the soft and hard double-layer membrane begins to sag; and sequentially cooling and cutting the membrane after film pressing to obtain the intraoral protection device for fixing the dental trauma, and then trimming, grinding and polishing the edge of the obtained intraoral protection device for fixing the dental trauma.
According to the embodiment of the disclosure, the thickness of the soft and hard double-sided interlayer membrane is 1.8-2.5mm, the heating time for hot pressing by adopting a full-automatic positive pressure film pressing machine is 2-4 minutes, the time for cooling the membrane after film pressing is 4-8 minutes, and cutting is carried out after cooling to obtain the full dentition
The pad is used as an intraoral protection device for fixing the tooth trauma; the rotational speed for polishing the oral protection device for fixing the tooth trauma is 20 multiplied by 1000min-1To 40X 1000min-1The rotating speed for polishing the oral protection device for fixing the tooth trauma is 5 multiplied by 1000min-1To 15X 1000min-1。
According to an embodiment of the present disclosure, the obtained whole dentition
The pad has an extension range that the back tooth buccal side is lower than the gingival margin, the front tooth labial side covers the crown incisal ends 1/3-1/2 and does not need to extend to the gingival sulcus, and the tongue or the palate side is flush or slightly higher than the gingival margin.
According to an embodiment of the present disclosure, before the step of acquiring the digital monomandibular dentition impression data where the trauma affected tooth is located, the method further comprises: restoring the trauma affected teeth to make the trauma affected teeth stable in the original position; and if the trauma affected tooth can not be stabilized in the original position, temporarily fixing the trauma affected tooth by adopting a suspension suture fixing mode or a steel wire resin fixing mode.
According to the embodiment of the present disclosure, the temporary fixation of the wounded tooth by means of hanging suture fixation comprises: and (3) inserting a needle from the labial gingiva of the trauma affected tooth by adopting a round needle or a thick silk thread, crossing the incisal margin to the palatal side or the lingual side, performing mattress suture for 1-2 needles, then crossing the incisal margin of the trauma affected tooth, inserting the needle from the labial gingiva of the trauma affected tooth, suturing and knotting, and temporarily suspending and fixing the trauma affected tooth in the alveolar socket.
According to the embodiment of the disclosure, the method of fixing the steel wire resin is adopted to temporarily fix the trauma affected tooth, and the method of temporarily fixing the steel wire resin is to use 1-2 relatively stable teeth adjacent to the trauma affected tooth to temporarily fix the steel wire resin, and specifically comprises the following steps: 2-3 strands of orthodontic stainless steel ligature wires with the diameter of 0.4mm are selected and twisted into twisted wires, and the twisted wires are bent into arc steel wires suitable for labial surfaces of teeth according to tooth surfaces for stabilizing teeth; washing the labial side of the teeth surface with clear water, drying, placing a cotton roll or an annular mouth gag in the gingival and buccal sulcus, and insulating moisture; all the middle 1/3 parts of the labial surfaces of the stable teeth in the fixed area are acid-etched by phosphoric acid slices, and the acid-etched area in the center of each tooth surface is 4 multiplied by 4mm2Washing the acid etching agent with clear water under high pressure, and drying by using an air gun, wherein the acid etching part on the tooth surface is chalky; coating enamel adhesive, blowing to be thin and irradiating for 20 seconds; the spare wire was adhered 1/3 to the labial surface of each tooth in the fixed area with light-cured composite resin or flowable resin, respectively, and cured by light for 40 seconds.
According to an embodiment of the present disclosure, the obtaining of the full dentition
After the pad is used as an oral protection device for fixing the tooth trauma, the pad also comprises: the intraoral protection device for fixing the dental trauma is sterilized, polished and tried on.
(III) advantageous effects
According to the technical scheme, the digital preparation method of the intraoral protection device for fixing the dental trauma, which is provided by the disclosure, adopts the digital impression and the 3D printing technology to prepare the intraoral protection device for fixing the dental trauma, has the remarkable advantages compared with the prior art, and at least has one of the following beneficial effects:
1. according to the digital preparation method of the oral protection device for fixing the dental trauma, the traumatic tooth model is prepared by adopting a digital impression technology without contacting with the affected tooth, the iatrogenic injury generated when the oral impression tray is taken down is avoided, and the secondary injury to the traumatic tooth caused by impression preparation is thoroughly eliminated. If spontaneous displacement does not occur after reduction of the affected tooth, the method does not need to perform a step of temporarily fixing the injured tooth.
2. The digital preparation method of the intraoral protection device for fixing the dental trauma, provided by the disclosure, adopts oral scanning to obtain a digital impression, and because the volume of a scanning head is far smaller than that of an oral cavity, the comfort level is greatly higher than that of the traditional intraoral tray for impression taking, so that discomfort such as nausea and vomiting of a patient is avoided, better medical experience is brought to the patient, and the popularization and application of the technology are greatly facilitated.
3. According to the digital preparation method of the oral protection device for fixing the dental trauma, the complicated steps of tray selection, impression material blending, plaster pouring and model finishing are avoided and saved by using the digital impression and the 3D printing method, the preparation process of the oral protection device for fixing the dental trauma is simplified, and the preparation cost is saved.
4. The digital preparation method of the intraoral protection device for fixing the dental trauma adopts a digital impression technology to directly scan and obtain the full dentition model in the mouth of a patient, has higher accuracy than an alginate impression material and high success rate, can immediately print by using scanning data after the model is damaged, does not need to repeat intraoral operation, does not need to consume the traditional impression material and a plaster model, saves cost, reduces medical waste, and is favorable for environmental protection.
Drawings
Fig. 1 schematically illustrates a flow chart of a method for digital preparation of an intraoral protective device for fixation of dental trauma according to an embodiment of the present disclosure.
Fig. 2 schematically illustrates a process flow diagram for digital preparation of an intraoral protective device for fixation of dental trauma according to an embodiment of the present disclosure.
Detailed Description
For the purpose of promoting a better understanding of the objects, aspects and advantages of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
Certain embodiments of the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the disclosure are shown. Indeed, various embodiments of the disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements.
Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood that the description is illustrative only and is not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.
All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.
In order to optimize the manufacturing process of the oral protection device for fixing the dental trauma, the computer aided design/manufacturing (CAD/CAM) technology is introduced into the oral protection device for fixing the dental trauma, digital impression technology is adopted to directly scan and acquire impression data of a single jaw dentition where a digital trauma affected tooth is located in a patient mouth, then 3D printing technology is adopted to acquire a single jaw dentition model, and a double-sided interlayer membrane is adopted to carry out film pressing on the single jaw dentition model to acquire the oral protection device for fixing the dental trauma. The 3D printing technology is adopted to obtain the model of the single jaw dentition, the precision error is within 50 microns, the model error is smaller than that of a model made of alginate impression materials, and the preparation of the intraoral protection device for fixing the dental trauma can be met.
In one exemplary embodiment of the present disclosure, a method for digitally preparing an intraoral protection device for dental trauma fixation is provided. As shown in fig. 1, fig. 1 schematically illustrates a flow chart of a method for digital preparation of an intraoral protective device for fixation of dental trauma according to an embodiment of the present disclosure, the method comprising:
step S1: acquiring digital single jaw dentition impression data of the trauma affected tooth, and performing data modeling;
step S2: 3D printing is carried out on the impression data of the single-jaw dentition after data modeling to obtain a single-jaw dentition model;
step S3: adopting a double-sided interlayer membrane to press the film of the single-jaw dentition model to obtain the full dentition
The pad serves as an intraoral protection device for the fixation of dental trauma.
In the above exemplary embodiments of the present disclosure, the step of acquiring the monoschiotomy impression data where the digitized trauma tooth is located in step S1 further includes: restoring the trauma affected teeth to make the trauma affected teeth stable in the original position; if the trauma affected tooth can not be stabilized in situ, the trauma affected tooth is temporarily fixed by adopting a suspension suture fixing mode or a steel wire resin fixing mode.
Wherein, adopt to hang to sew up fixed mode and carry out interim fixed to traumatic affected tooth in midair, include: and (3) inserting a needle from the labial gingiva of the trauma affected tooth by adopting a round needle or a thick silk thread, crossing the incisal margin to the palatal side or the lingual side, performing mattress suture for 1-2 needles, then crossing the incisal margin of the trauma affected tooth, inserting the needle from the labial gingiva of the trauma affected tooth, suturing and knotting, and temporarily suspending and fixing the trauma affected tooth in the alveolar socket. Adopt the fixed mode of steel wire resin to carry out interim fixed to traumatism affected tooth, utilize 1 ~ 2 tooth that are adjacent with traumatism affected tooth that relatively firm to carry out steel wire resin and fix, specifically include: 2-3 strands of orthodontic stainless steel ligature wires with the diameter of 0.4mm are selected and twisted into the orthodontic ligature wireThe twisted wire is bent into an arc-shaped steel wire suitable for the labial surface of the teeth according to the tooth surface for stabilizing the teeth; washing the labial side of the teeth surface with clear water, drying, placing a cotton roll or an annular mouth gag in the gingival and buccal sulcus, and keeping away moisture; all the middle 1/3 parts of the labial surfaces of the stable teeth in the fixed area are acid-etched by phosphoric acid slices, and the acid-etched area in the center of each tooth surface is 4 multiplied by 4mm2Washing the acid etching agent with clear water under high pressure, and drying by using an air gun, wherein the acid etching part on the tooth surface is chalky; coating enamel adhesive, blowing to be thin and irradiating for 20 seconds; the spare wire was adhered 1/3 to the labial surface of each tooth in the fixed area with light-cured composite resin or flowable resin, respectively, and cured by light for 40 seconds.
In the above exemplary embodiment of the present disclosure, the acquiring and data modeling of the digital monomandibular dentition impression data where the trauma affected tooth is located as described in step S1 includes: scanning the single-jaw dentition where the externally injured and affected teeth are located by adopting an oral scanner to obtain stl format single-jaw dentition impression data; and performing data modeling on the impression data of the single-jaw dentition in the stl format, and slicing the built data model to generate the impression data of the single-jaw dentition in the cli format.
In the above exemplary embodiment of the present disclosure, the 3D printing of the modeled data of the monomandibular dentition impression data described in step S2 to obtain the monomandibular dentition model includes: and 3D printing by using a 3D printer by using photosensitive resin as a printing material according to the single-jaw dentition impression data in the cli format to obtain a single-jaw dentition model.
In the above exemplary embodiment of the present disclosure, the single-jaw dentition model is laminated by using the double-sided interlayer film as described in step S3 to obtain the full dentition
The pad as an intraoral protection device for the fixation of dental trauma comprises: selecting a soft and hard double-sided interlayer membrane (the soft surface is polycarboxylate material and is the tissue surface of the oral protection device for fixing the dental trauma, the hard surface on the other side is polyacrylate material), placing the soft surface of the soft and hard double-sided interlayer membrane on a single-jaw dentition model in a downward manner, performing hot pressing by using a full-automatic positive pressure film pressing machine, and opening the center of the soft and hard double-layer membraneThe preparation method comprises the steps of firstly drooping, namely compression molding, then sequentially cooling and cutting the membrane after film pressing to obtain the intraoral protection device for fixing the tooth trauma, and then trimming, grinding and polishing the edge of the obtained intraoral protection device for fixing the tooth trauma.
According to an embodiment of the present disclosure, the obtaining of the full dentition
After the pad is used as an oral protection device for fixing the tooth trauma, the pad also comprises: the intraoral protection device for fixing the dental trauma is sterilized, polished and tried on.
The digital preparation method of the intraoral protective device for fixing dental trauma provided by the present disclosure is described in detail below with reference to a specific example.
As shown in fig. 2, fig. 2 schematically illustrates a process flow diagram for digital preparation of an intraoral protective device for fixation of dental trauma according to an embodiment of the present disclosure, the method comprising the steps of:
step 21: restoring the trauma affected teeth to make the trauma affected teeth stable in the original position; if the trauma affected tooth can not be stabilized at the original position, the trauma affected tooth is temporarily fixed by adopting a suspension suture fixing mode or a steel wire resin fixing mode; wherein:
(1) suspended suture fixation
Adopt and suspend in midair the fixed mode of sewing up and carry out interim fixing to traumatic affected tooth, include: and (3) inserting a needle from the labial gingiva of the trauma affected tooth by adopting a round needle or a thick silk thread, crossing the incisal margin to the palatal side or the lingual side, performing mattress suture for 1-2 needles, then crossing the incisal margin of the trauma affected tooth, inserting the needle from the labial gingiva of the trauma affected tooth, suturing and knotting, and temporarily suspending and fixing the trauma affected tooth in the alveolar socket.
(2) Temporary fixation of steel wire resin
Adopt the fixed mode of steel wire resin to carry out interim fixed to traumatism affected tooth, utilize 1 ~ 2 tooth that are adjacent to traumatism affected tooth relatively firm to carry out steel wire resin interim fixed, specifically include:
selecting and using 2-3 strands of orthodontic stainless steel ligature wires with the diameter of 0.4mm, twisting the ligature wires into twisted wires, and pressingBending the tooth surface of the steady tooth into an arc steel wire suitable for the labial surface of the tooth; washing the labial side of the teeth surface with clear water, drying, placing a cotton roll or an annular mouth gag in the gingival and buccal sulcus, and keeping away moisture; all stable tooth labial surfaces in the fixing area are acid-etched with phosphoric acid tablet at 1/3, and the acid-etched area in the center of each tooth surface is optionally 4 × 4mm2Washing the acid etching agent with clear water under high pressure, and drying by using an air gun, wherein the acid etching part on the tooth surface is chalky; coating enamel adhesives (e.g., single-bond, one-coat bond, etc.), blown thin, and light for 20 seconds; the spare wire was adhered 1/3 to the labial surface of each tooth in the fixed area with light-cured composite resin or flowable resin, respectively, and cured by light for 40 seconds.
Step 22: carrying out intraoral scanning to obtain digital data of the dentition impression of the single jaw where the trauma affected tooth is located;
scanning the single-jaw dentition where the externally injured and affected teeth are located by adopting an oral scanner to obtain stl format single-jaw dentition impression data; the oral scanner can adopt a 3shape TRIOS T12A oral scanner, the 3shape TRIOS T12A oral scanner is used for scanning the single-jaw dentition where the injured tooth is located, and then 3shape chair-side design software is used for obtaining a research model to obtain stl format single-jaw dentition impression data.
Step 23: modeling data;
carrying out data modeling on the stl-format single-jaw dentition impression data, and slicing the built data model to generate cli-format single-jaw dentition impression data; specifically, the acquired stl-format model file is modeled by using a software Dental System of 3shape, the modeled model is imported into ShapeWare software, and slicing is performed to generate cli-format monomandibular dentition impression data.
Step 24: 3D printing to obtain a single-jaw dentition model;
according to the cli-format single-jaw dentition impression data, 3D printing is carried out by a 3D printer by using photosensitive resin as a printing material to obtain a single-jaw dentition model; specifically, the data of the impression of the single-jaw dentition generating the cli format is led into a Lecemic 3D printer for 3D printing, and the printing material is photosensitive resin for the Model (Model, viscosity 300-500cps, tensile strength 35-50MPa, elongation not less than 5%, hardness more than 80 Shore D), so that the single-jaw dentition Model is obtained.
Step 25: pressing a film by a hot-pressing forming machine;
adopt two-sided intermediate layer diaphragm to carry out the press mold to single jaw dentition model, obtain the fixed intraoral protection device that uses of tooth traumatism, include: selecting a soft and hard double-sided interlayer diaphragm (the soft surface is a polycarboxylate material and is an organized surface thereof, the hard surface on the other side is polyacrylate), placing the soft surface of the soft and hard double-sided interlayer diaphragm on a single jaw dentition model in a downward manner, carrying out hot pressing by adopting a full-automatic positive pressure film pressing machine, carrying out press forming when the center of the soft and hard double-layer diaphragm begins to sag, and then sequentially cooling and cutting the diaphragm after film pressing to obtain a full dentition model
The pad is used as an intraoral protection device for fixing the tooth trauma, and then the obtained complete dentition
The pad is edge trimmed, sanded and polished.
Specifically, selecting a soft-hard double-sided interlayer membrane with the thickness of 1.8-5 mm, performing hot pressing by using a Dreve drufmat scan full-automatic positive pressure laminator with the optional thickness of 2mm and the optional thickness of 2mm, performing press molding for 2-4 minutes and 2-45 seconds, and performing press molding for 4-8 minutes and 5 minutes for optional cooling after the center of the membrane slightly sags; cutting off the intraoral protection device for fixing the dental trauma from the membrane; grinding the oral protection device for fixing the tooth trauma by using an NSK dental mechanic grinding machine at a rotation speed of 20 multiplied by 1000min-1To 40X 1000min-1Optionally grinding at 30 × 1000min-1Then, the whole dentition
The pad extends to the extent that the back cheek side is lower than the gingival margin, the front labial side covers the crown incisal ends 1/3-1/2 and does not need to extend to the gingival and buccal sulcus, and the tongue or palate side is flush or slightly higher than the gingival margin; finally, for the whole dentition
Polishing the pad at a rotation speed of 5 × 1000min-1To 15X 1000min-1Optional polishing speed of 10 × 1000min-1。
Step 26: sterilizing, polishing and trying on the intraoral protection device for fixing the dental trauma to finish the digital preparation of the intraoral protection device for fixing the dental trauma; specifically, the cotton fabric is cleaned by clean water at high pressure, and wiped and disinfected by a 75% alcohol cotton ball, so that the cotton fabric can be tried on.
As can be seen from the above technical solutions, the intraoral protection device for fixing a dental trauma prepared by using a digital impression and 3D printing provided by the present disclosure is the biggest difference from the prior art in that: firstly, iatrogenic injuries can be reduced, and secondary injuries of trauma teeth caused by impression taking are completely eliminated; secondly, the complicated steps of tray selection, impression material blending, plaster pouring and model finishing are avoided and saved clinically in the intraoral digital impression, the preparation process is simplified, and the preparation cost is saved; in addition, the problems of nausea, vomiting, discomfort, sensitive teeth, even difficult breathing and the like of a patient can be caused when the traditional tray is used for taking a model, the problems are less caused by the digital impression in the mouth, better medical experience is brought to the patient, and the popularization and the application of the technology are greatly facilitated; meanwhile, the digital impression technology does not need to consume traditional impression materials and plaster models, saves cost, reduces medical waste and is beneficial to environmental protection.
Further, in order to explain in detail the advantages of the digital preparation method of the intraoral protection device for dental trauma fixation provided by the present disclosure, the advantages of the digital preparation method of the intraoral protection device for dental trauma fixation provided by the present disclosure will be explained in detail below with reference to two prior arts.
The prior art 1 relates to a digital manufacturing method of soft and hard tissue protection jaw pad for oral surgery. The method comprises the steps of scanning a three-dimensional image of the skull of a patient through CBCT to obtain DICOM data of the hard tissues of the upper jaw and the lower jaw of the patient; acquiring stl data of upper and lower jaw dentitions of a patient through intraoral dentition infrared scanning; by openingThe medical image software Pro-plan completes the superposition of the three-dimensional image of the skull and the dentition image, and utilizes reverse engineering software to design a region for protecting the jaw pad according to the oral operation region; and inputting the stored stl file into a reverse engineering software Geomagic Studio to design a 3D model of a protective jaw pad, and printing the 3D model obtained by design by a 3D printer. According to the method, CBCT and dentition scanning three-dimensional images are combined to obtain the hard tissues of the upper jaw and the lower jaw and dentition data of a patient, the data are analyzed, and a personalized protection jaw cushion suitable for the patient is designed according to the operation area of the patient. The method is suitable for protecting soft and hard tissues in oral surgery, avoids the surgical area, achieves the stability and safety of mouth opening, and improves the surgical efficiency, the jaw pad is of a disc structure and covers the whole dentition, the occlusal surface corresponds to the upper and lower jaw dentition, the biting depth is 1mm, the edge thickness is 2mm, the upper jaw range extends to the gum attached to the buccal side, the palate side extends to the soft and hard palate junction of the palate part, the lower jaw labial side extends to the gum attached to the buccal side, and the lingual side extends to the gum and mucous membrane junction of the gingival and oral bottom; jaw pad
The back and the front are planes, which is convenient for contacting with the metal mouth gag during operation.
However, the jaw pad manufactured by the method of the prior art 1 is only suitable for use in surgical operations, and cannot satisfy the requirements of the dental trauma fixing device:
1) does not satisfy the condition of the device for fixing the tooth trauma.
The device for fixing the dental trauma needs to satisfy the conditions:
a. the teeth can be stably fixed at the right position;
b. functional stimulation to the teeth can be given without hindering chewing;
c. does not obstruct daily life;
d. soft, comfortable and beautiful.
The jaw pad manufactured by the method is of a disc structure, the extension range of the jaw pad is far larger than that of a tooth trauma fixing device, and the jaw pad is only used for surgical operation, cannot be normally used and chewed after being worn, cannot give functional stimulation, and is not beneficial to healing of periodontal membranes of trauma teeth.
2) The scanning and reconstruction of the upper and lower jaw dentitions are performed simultaneously.
3) Unnecessary radiation exposure and medical cost are increased, the diagnosis and treatment time of the dental trauma is prolonged, and the dental trauma patient cannot be treated in time.
In the method employed in prior art 1, the scanning requires infrared scanning through CBCT and intraoral dentition. CBCT can be used as a routine auxiliary examination for oral and maxillofacial surgery, but is not an essential examination means for dental trauma, and particularly when children or teenagers have dental trauma, the radiation exposure of the children is reduced as much as possible for protecting the whole body health of the children.
The prior art 2 relates to a preparation method of an oral function jaw pad, which utilizes a three-dimensional scanner to scan and acquire three-dimensional data of an oral dentition of a patient, simultaneously acquire the height of the jaw pad and the three-dimensional data of the jaw pad, form an integrated dentition and jaw pad model, perform 3D printing, examination, correction, compression molding and the like, and completes the preparation of a hard dental pad used in the fields of joint disease treatment, restoration, orthodontics and the like by a one-step method.
The jaw pad manufactured by the method of the prior art 2 cannot be used for the dental trauma because the method can only manufacture a hard jaw pad, the method needs to manufacture the hard jaw pad by using thermoplastic polymers such as modified esters, unsaturated polyester, urethane acrylate and the like or photosensitive polymer materials such as silica gel, silicone and the like, a fixing device for the dental trauma cannot be manufactured by using hard materials, the hard materials cannot conduct chewing force, cannot form functional stimulation to the injured teeth, and cannot promote healing of periodontal ligament. Hard material
The pad may cause damage to the traumatized teeth when the patient wears it.
The present disclosure has been described in detail so far with reference to the accompanying drawings. From the above description, those skilled in the art should clearly recognize the present disclosure.
It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. In addition, the above definitions of the respective elements are not limited to the specific structures, shapes or modes mentioned in the embodiments, and those skilled in the art may easily modify or replace them.
Of course, the present disclosure may also include other parts according to actual needs, and since the parts are not related to the innovation of the present disclosure, the details are not described herein.
Unless otherwise indicated, the numerical parameters set forth in the specification and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by the present disclosure. In particular, all numbers expressing quantities of ingredients, reaction conditions, and so forth used in the specification and claims are to be understood as being modified in all instances by the term "about". Generally, the expression is meant to encompass variations of ± 10% in some embodiments, 5% in some embodiments, 1% in some embodiments, 0.5% in some embodiments by the specified amount.
Furthermore, the words "comprising" and "comprises" do not exclude the presence of elements or steps other than those listed in a claim.
In addition, unless steps are specifically described or must occur in sequence, the order of the steps is not limited to that listed above and may be changed or rearranged as desired by the desired design. The embodiments described above may be mixed and matched with each other or with other embodiments based on design and reliability considerations, i.e., technical features in different embodiments may be freely combined to form further embodiments.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the disclosure, various features of the disclosure are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various disclosed aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that is, the claimed disclosure requires more features than are expressly recited in each claim. Rather, as the following claims reflect, disclosed aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this disclosure.
Further, in the drawings or description, the same drawing reference numerals are used for similar or identical parts. Features of the embodiments illustrated in the description may be freely combined to form new embodiments without conflict, and each claim may be individually referred to as an embodiment or features of the claims may be combined to form a new embodiment, and in the drawings, the shape or thickness of the embodiment may be enlarged and simplified or conveniently indicated. Further, elements or implementations not shown or described in the drawings are of a form known to those of ordinary skill in the art. Additionally, while exemplifications of parameters including particular values may be provided herein, it is to be understood that the parameters need not be exactly equal to the respective values, but may be approximated to the respective values within acceptable error margins or design constraints.
Unless a technical obstacle or contradiction exists, the above-described various embodiments of the present disclosure may be freely combined to form further embodiments, which are all within the scope of protection of the present disclosure.
While the present disclosure has been described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to be illustrative of the preferred embodiments of the disclosure, and should not be construed as limiting the disclosure. The dimensional proportions in the drawings are merely schematic and are not to be understood as limiting the disclosure.
Although a few embodiments of the present general inventive concept have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.
The above-mentioned embodiments are intended to illustrate the objects, aspects and advantages of the present disclosure in further detail, and it should be understood that the above-mentioned embodiments are only illustrative of the present disclosure and are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (6)
1. A digital preparation method of an oral protection device for fixing tooth trauma is characterized by comprising the following steps:
acquiring digital single jaw dentition impression data of the trauma affected tooth, and performing data modeling;
3D printing is carried out on the impression data of the single-jaw dentition after data modeling to obtain a single-jaw dentition model;
adopting a double-sided interlayer membrane to press the film of the single-jaw dentition model to obtain the full dentition
The pad is used as an intraoral protection device for fixing the tooth trauma;
wherein, the single-jaw dentition model is pressed by adopting a double-sided interlayer membrane to obtain a full dentition
The pad as an intraoral protection device for the fixation of dental trauma comprises:
selecting a soft-hard double-sided interlayer membrane, wherein the soft side is a polycarboxylate material
The tissue surface and the hard surface of the other surface of the pad are made of polyacrylate materials;
placing the soft surface of the soft and hard double-sided interlayer membrane on the single jaw dentition model in a downward mode, carrying out hot pressing by adopting a full-automatic positive pressure film pressing machine, and carrying out press forming when the center of the soft and hard double-layer membrane begins to sag;
and sequentially cooling and cutting the membrane after film pressing to obtain the intraoral protection device for fixing the dental trauma, and then trimming, grinding and polishing the edge of the obtained intraoral protection device for fixing the dental trauma.
2. The digital preparation method of an intraoral protective device for dental trauma immobilization according to claim 1, wherein the step of acquiring and modeling the data of the monomandibular dentition impression data where the digitized trauma tooth is located comprises:
scanning the single-jaw dentition where the externally injured and affected teeth are located by adopting an oral scanner to obtain stl format single-jaw dentition impression data;
and performing data modeling on the single-jaw dentition impression data in the stl format, and slicing the built data model to generate the single-jaw dentition impression data in the cli format.
3. The digital preparation method of an intraoral protective device for dental trauma immobilization according to claim 2, wherein the 3D printing of the impression data of the monomandibular dentition modeled after the data modeling to obtain the monomandibular dentition model comprises:
and 3D printing by using a 3D printer by using photosensitive resin as a printing material according to the single-jaw dentition impression data in the cli format to obtain a single-jaw dentition model.
4. The digital preparation method of an intraoral protective device for dental trauma immobilization according to claim 1, wherein the thickness of the soft and hard double-sided interlayer membrane is 1.8-2.5mm, the heating time for hot pressing by a full-automatic positive pressure laminator is 2-4 minutes, and the time for cooling the membrane after lamination is 4-8 minutes; cooling, cutting to obtain full dentition
The pad is used as an intraoral protection device for fixing the tooth trauma; the rotational speed for polishing the oral protection device for fixing the tooth trauma is 20 multiplied by 1000min-1To 40X 1000min-1The rotating speed for polishing the oral protection device for fixing the tooth trauma is 5 multiplied by 1000min-1To 15X 1000min-1。
5. The digital preparation method of intraoral protective device for dental trauma immobilization as claimed in claim 1, characterized in that the obtained whole dentition
The pad has an extension range that the back tooth buccal side is lower than the gingival margin, the front tooth labial side covers the crown incisal ends 1/3-1/2 and does not need to extend to the gingival sulcus, and the tongue or the palate side is flush or slightly higher than the gingival margin.
6. The digital preparation method of an intraoral protective device for fixation of dental trauma according to claim 1, characterized in that the whole dentition is obtained
After the pad is used as an oral protection device for fixing the tooth trauma, the pad also comprises:
the intraoral protection device for fixing the dental trauma is sterilized, polished and tried on.
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| CN202110188253.6A CN112914775B (en) | 2021-02-18 | 2021-02-18 | Digital preparation method of intraoral protection device for dental trauma fixation |
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| CN101039632A (en) * | 2004-10-14 | 2007-09-19 | 克里斯多佛·约翰·法雷尔 | Oral appliance |
| CN104546154A (en) * | 2013-10-16 | 2015-04-29 | 西安东美齿科科技有限公司 | Teeth protective device |
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