Method for wound protection, soft tissue recovery and immediate repair after tooth extraction

Abstract

The invention provides a method for wound protection, soft tissue recovery and immediate repair after tooth extraction, and relates to the technical field of oral medical treatment, and the method comprises the following steps: obtaining an initial dentition digital model of a patient before tooth extraction by using an intraoral scanner; virtual tooth extraction is conducted on the initial dentition digital model of the patient through design software, and a drug delivery guide plate and a tooth extraction wound protection plate are designed and printed. After tooth extraction, a patient wears the drug delivery guide plate, the filling material is injected into a tooth extraction wound through the drug delivery hole, and then the drug delivery guide plate is taken down and put into a tooth extraction wound protection plate or an immediate false tooth. The application of the device is beneficial to healing of a tooth extraction wound, and the risks of tooth extraction complications such as hemostasis failure, infection and dry socket of a patient are reduced; in the processes of feeding, oral hygiene care and the like of the postoperative patient, the wound is continuously isolated and protected, and the experience feeling of the patient after tooth extraction can be greatly improved; the patient generally does not need to see a doctor again, and after the tooth extraction wound is completely healed, the protective plate is taken down or the immediate false tooth is continuously worn.

Description

Technical Field

[0001] The present invention relates to the field of oral medical technology, and in particular to a method for wound protection, soft tissue recovery and immediate repair after tooth extraction surgery. Background Art

[0002] Tooth extraction is the most basic treatment in oral surgery. Wound exposure, bleeding, and pain are the most common complications after tooth extraction, which bring pain to many patients. The current routine clinical hemostasis method is for patients to bite a cotton swab to compress and stop bleeding. For elderly and weak patients, loose bites and displacement of the cotton swab often occur. For children, patients who have teeth extracted under general anesthesia or sedation, and other patients with special conditions, it is difficult to achieve satisfactory hemostasis through biting. In addition, most patients have poor oral care after surgery, especially for the mandibular posterior teeth. Deep and large extraction wounds often lead to foreign body accumulation, causing discomfort or complications such as dry socket. Extraction wounds adjacent to important anatomical structures may also communicate with the neural canal, causing nerve damage.

[0003] In order to prevent and treat possible complications after tooth extraction, appropriate covering or filling materials must be used to treat the tooth extraction wound. With the continuous advancement of materials science, there are many types of materials currently available for clinical application, which can be divided into hemostatic, analgesic, and barrier types according to their uses, including polymer expansion materials, collagen plugs, biofilms, etc. Reasonable application can protect and isolate the tooth extraction wound and compress the bone wall of the tooth extraction wound, which is of great significance in wound management after tooth extraction.

[0004] There are some problems with current wound management materials. Although non-absorbable materials such as iodoform gauze have strong plasticity and good compression effect, they are irritating and need to be removed a second time, which delays the healing of tooth extraction wounds and is gradually being replaced by absorbable materials. Absorbable materials have poor strength and are easy to fall off. When there is a lot of bleeding in the wound, the effect is unstable and wound suture is often required. Patients need to visit the doctor to remove the sutures. Although collagen bandages with covering effects can be used in combination with hemostatic packing materials to seal tooth extraction wounds and stabilize packing materials, the effect is short-lived and is dissolved within 24 hours. Summary of the invention

[0005] The invention provides a wound protection, soft tissue recovery and immediate repair method after tooth extraction, which is used to solve the problems of wound exposure after tooth extraction, poor healing effect and hemostasis effect of tooth extraction wound in the prior art.

[0006] The present invention provides a method for wound protection, soft tissue recovery and immediate repair after tooth extraction, comprising: Use an intraoral scanner to scan the patient's oral cavity before tooth extraction to obtain a digital model of the patient's initial dentition; Performing a virtual tooth extraction operation on the digital model of the initial dentition of the patient, selecting and separating the tooth portion to be extracted along the gingival margin to obtain a digital model of the tooth to be extracted, filling the hole corresponding to the extraction socket according to the curvature on the digital model of the initial dentition after the virtual tooth extraction, carving and smoothing the shape of the extraction socket to obtain a digital model of the dentition after tooth extraction; The undercuts of the digital model of the posterior dentition are observed by using observation software, and the undercuts on the adjacent teeth near the missing teeth are eliminated by using the undercut filling function of the software, and the undercuts on the buccal and lingual sides of the adjacent teeth on both sides of the teeth to be extracted are reserved for retention, so as to obtain a working model of the posterior dentition; Selecting the extraction socket corresponding to the area on the posterior dentition working model, offsetting it toward the root, selecting the extraction socket, the adjacent surfaces of the adjacent teeth on both sides and the occlusal surface area for copying at a predetermined distance from the gingival margin to the mucosal surface, and performing shell extraction, carving and rapid smoothing operations on the copied regional models to obtain a preliminary model of the extraction wound medication guide; and / or generating medication holes in the preliminary model of the extraction wound medication guide to obtain a final model of the extraction wound medication guide; At the position where the gums of the posterior dentition working model are at a predetermined distance from the gingival margin, the corresponding area of ​​the extraction socket, the adjacent surfaces of the adjacent teeth on both sides near the missing tooth gap, and the buccal and lingual surface areas are selected for copying, and the copied regional models are shelled, carved, and quickly smoothed to obtain a tooth extraction wound guard plate model; and / or, for the anterior tooth area or patients with aesthetic requirements, the tooth extraction wound guard plate model and the digital model of the tooth to be extracted can be added by Boolean operation; the occlusal surface of the tooth to be extracted is selected, and offset, carved, and smoothed toward the root to avoid contact with the opposing teeth to obtain an initial model of the immediate denture; The final model of the tooth extraction wound medication guide, the tooth extraction wound guard plate model and / or the initial model of the immediate denture are printed respectively by using 3D printing technology to obtain the medication guide, the tooth extraction wound guard plate and / or the immediate denture.

[0007] According to a method for wound protection, soft tissue recovery and immediate repair after tooth extraction provided by an embodiment of the present invention, the step of generating a drug delivery hole in the initial model of a drug delivery guide plate for a tooth extraction wound comprises: Generating a cylindrical structure at the center of the bottom of the tooth extraction socket of the initial model of the tooth extraction wound medication guide; A subtraction Boolean operation is performed between the cylindrical structure and the initial model of the tooth extraction wound medication guide to obtain a final model of the tooth extraction wound medication guide having the medication hole.

[0008] According to a method for wound protection, soft tissue recovery and immediate repair after tooth extraction surgery provided by an embodiment of the present invention, before the step of generating a drug delivery hole in the initial model of the drug delivery guide plate for the tooth extraction wound, the method further includes: Smooth the copied area model.

[0009] According to an embodiment of the present invention, a method for wound protection, soft tissue recovery and immediate repair after tooth extraction surgery provided by the embodiment of the present invention further includes: before the step of using 3D printing technology to respectively print the final model of the tooth extraction wound medication guide, the tooth extraction wound guard plate model and / or the initial model of the immediate denture: The drug administration guide plate, the tooth extraction wound protection plate or the tooth extraction wound protection plate of the immediate denture are tried on and adjusted, and hemostatic, analgesic, covering or hole filling materials are injected from the drug administration hole.

[0010] According to an embodiment of the present invention, a method for wound protection, soft tissue recovery and immediate repair after tooth extraction is provided, before the step of trial fitting and adjusting the drug administration guide, the tooth extraction wound protection plate or the immediate denture, further comprising: The tooth extraction wound plate or the immediate denture is post-processed to improve the comfort of the tooth extraction wound plate or the immediate denture.

[0011] According to a method for wound protection, soft tissue recovery and immediate repair after tooth extraction provided by an embodiment of the present invention, the intraoral scanner is 3 Shape Trios 3, CEREC or Shining 3D.

[0012] According to a method for wound protection, soft tissue recovery and immediate repair after tooth extraction provided by an embodiment of the present invention, the design software is Geomagic Wrap or Meshmixer software, and the observation software is Exocad DentalCAD ​​or DentalNavi software.

[0013] According to a method for wound protection, soft tissue recovery and immediate repair after tooth extraction provided by an embodiment of the present invention, the depth of the undercut is 0.2-0.4 mm.

[0014] According to a method for wound protection, soft tissue recovery and immediate repair after tooth extraction provided by an embodiment of the present invention, the predetermined distance is 1-1.5 mm, and the thickness of the shell is 1-2 mm.

[0015] According to a method for wound protection, soft tissue recovery and immediate repair after tooth extraction provided by an embodiment of the present invention, the diameter of the cylindrical structure is 0.6-1 mm.

[0016] The wound protection, soft tissue recovery and immediate repair method after tooth extraction provided by the embodiment of the present invention provides an effective wound protection device for patients after tooth extraction, which plays a role of physical shielding protection and compression hemostasis. Hemostatic packing materials can be placed at the bottom, and drugs can be supplemented through the drug delivery hole. The application of this device is conducive to the healing of tooth extraction wounds, reducing the risk of tooth extraction complications such as hemostasis failure, infection, dry socket, etc.; and the wound is continuously isolated and protected during the process of eating and oral hygiene care after surgery, which can greatly improve the patient's experience after tooth extraction; patients generally do not need to visit the doctor again, and after the tooth extraction wound is completely healed, the guard can be removed or the immediate denture can be continued to be worn.

[0017] The method for wound protection, soft tissue recovery and immediate repair after tooth extraction provided in the embodiment of the present invention adopts full-process digital design, processing and production, uses an intraoral scanner to quickly complete data acquisition, simplifies the design process on the technician side, and uses 3D printing technology to save materials. The tooth can be worn immediately after extraction, providing an effective, feasible and easy-to-promote solution to solve the problems of wound exposure and poor hemostasis after tooth extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a flow chart of a method for wound protection, soft tissue recovery and immediate repair after tooth extraction provided by an embodiment of the present invention; Figure 2 is a schematic diagram of the structure of a digital model of an initial dentition of a patient provided by an embodiment of the present invention; Figure 3 It is a schematic diagram of the structure of a digital model of the dentition after tooth extraction and a model of extracted teeth provided in an embodiment of the present invention; Figure 4 It is a structural schematic diagram of an initial model of a drug delivery guide plate for tooth extraction wounds provided in an embodiment of the present invention; Figure 5 It is a structural schematic diagram of the final model of the tooth extraction wound medication guide provided by an embodiment of the present invention; Figure 6 It is a structural schematic diagram of a tooth extraction wound protection plate model provided by an embodiment of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the immediate denture model provided by an embodiment of the present invention.

[0020] Reference numerals: 1. Compression part of the guard plate; 2. Retention part; 3. Drug delivery hole; 10. Digital model of the patient's initial dentition; 20. Digital model of the dentition after tooth extraction; 30. Initial model of drug delivery guide for tooth extraction wound; 40. Final model of drug delivery guide for tooth extraction wound; 50. Guard plate model for tooth extraction wound; 60. Model of the tooth to be extracted; 70. Initial model of immediate denture; 80. Aesthetic filling part of gingival self-curing material. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0024] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0026] Combine the following Figures 1 to 7 The present invention describes a method for digitally designing and producing a tooth extraction wound guard plate according to an embodiment of the present invention.

[0027] Figure 1 The following is a flow chart of a method for wound protection, soft tissue recovery and immediate repair after tooth extraction surgery. Figure 1 As shown, the wound protection, soft tissue recovery and immediate repair method after tooth extraction includes the following steps: Step S100, using an intraoral scanner to scan the oral cavity of the patient before tooth extraction to obtain a digital model 10 of the initial dentition of the patient; Step S200, performing a virtual tooth extraction operation on the digital model of the initial dentition of the patient, selecting and separating the tooth portion to be extracted along the gingival margin to obtain a digital model of the tooth to be extracted, filling the hole corresponding to the extraction socket according to the curvature on the digital model of the initial dentition after the virtual tooth extraction, carving and smoothing the shape of the extraction socket to obtain a digital model of the dentition after tooth extraction; Figure 2 The schematic diagram of the structure of the digital model of the initial dentition of a patient provided by an embodiment of the present invention is illustrated. Figure 3 The structural schematic diagram of the digital model of the dentition after tooth extraction and the model of the teeth to be extracted provided by the embodiment of the present invention is illustrated as follows Figure 2 and Figure 3 As shown, the tooth part that needs to be extracted can be clearly observed on the digital model 10 of the patient's initial dentition. After the tooth part that needs to be extracted is determined, the tooth model 60 to be extracted is separated from the digital model 10 of the patient's initial dentition, that is, the tooth part to be extracted is deleted from the digital model 10 of the patient's initial dentition. Then, the corresponding holes are filled according to the curvature, and the shape of the extraction socket is carved and smoothed so that the hole meets the requirements for filling. The purpose of filling and carving is to edit and trim the model without tooth extraction into the shape after tooth extraction, so as to obtain the digital model of the dentition after tooth extraction and the digital model of the tooth to be extracted.

[0028] Step S300, using observation software to observe undercuts on the digital model of the dentition after tooth extraction, using the software's undercut filling function to eliminate the undercuts on the adjacent teeth on both sides near the missing tooth gap, and retaining the undercuts on the buccal and lingual sides of the adjacent teeth on both sides of the teeth to be extracted for retention, to obtain a working model of the dentition after tooth extraction; During the undercut observation process, the observation software was used to fill the undercut, leaving only the undercut with a depth of 0.3 mm on the buccal (labial) and lingual (palatal) surfaces of the adjacent teeth on both sides.

[0029] Step S400, selecting the extraction socket corresponding area on the posterior dentition working model, offsetting it toward the root, selecting the extraction socket, the adjacent surfaces of the gaps between the adjacent teeth on both sides, and the occlusal surface area for copying at a predetermined distance from the mucosal surface to the gingival margin, and performing shell extraction, carving, and rapid smoothing operations on the copied regional model to obtain a preliminary model 30 of the extraction wound medication guide; and / or generating a medication hole 3 in the preliminary model 30 of the extraction wound medication guide to obtain a final model 40 of the extraction wound medication guide; Figure 4 The schematic diagram of the structure of the initial model of the tooth extraction wound medication guide provided by the embodiment of the present invention is illustrated as follows Figure 4 As shown, after the copied area model is shelled, the model has a certain thickness, and a three-dimensional model is obtained. Then the model is carved to increase the thickness of the weak area of ​​the model to 2.0 mm, which is used as the thickness of the guard plate. After the above operations, the model is better adapted to the shape of the teeth and the surrounding area, ensuring that the manufactured tooth extraction wound guard plate fits better with the patient's teeth and the surrounding area. During the offset process, the offset distance is 1 mm.

[0030] Step S500, at the position where the gums of the posterior dentition working model are a predetermined distance away from the gingival margin, select the area corresponding to the extraction socket, the adjacent surfaces of the adjacent teeth on both sides near the missing tooth gap, and the buccal and lingual surface areas for copying, and perform shell extraction, carving and rapid smoothing operations on the copied area model to obtain the extraction wound protection plate model 50; and / or, for the anterior tooth area or patients with aesthetic requirements, the extraction wound protection plate model 50 and the digital model of the tooth to be extracted can be added by Boolean operation; the occlusal surface of the tooth to be extracted is selected, and it is offset, carved and smoothed toward the root to avoid contact with the opposing teeth; the labial (buccal) side gingival area is carved and evenly reduced by 1 mm as a reserved space 80 for the red base resin material to obtain the initial model of the immediate denture.

[0031] Step S600, using 3D printing technology to print the final model 40 of the tooth extraction wound medication guide, the tooth extraction wound guard plate model 50 and / or the initial model 70 of the immediate denture, the tooth extraction wound medication guide model 70 uses a transparent guide resin material, the tooth extraction wound guard plate model 50 uses a red base resin material, and the initial model 70 of the immediate denture uses a white denture resin material to obtain the medication guide, the tooth extraction wound guard plate and / or the immediate denture. The reserved space 80 on the lip (cheek) side of the immediate denture is filled and carved with a red base self-curing resin material to obtain the final immediate denture.

[0032] After the patient has had a tooth extracted, the extraction socket is routinely cleaned and scraped, the medication guide is placed in the extraction area, and the extraction socket filling material, such as polymer expansion materials, chitosan and other absorbable materials that stop bleeding, reduce inflammation and promote wound healing, is injected from the medication hole. Then the medication guide is removed, and the tooth extraction wound guard or immediate denture is placed.

[0033] The wound protection, soft tissue recovery and immediate repair method after tooth extraction provided by the embodiment of the present invention provides an effective wound protection device for patients after tooth extraction, which plays a role of physical shielding protection and compression hemostasis. Hemostatic packing materials can be placed at the bottom, and drugs can be supplemented through the drug delivery hole 3. The application of this device is conducive to the healing of the hole, reducing the risk of tooth extraction complications such as hemostasis failure, infection, dry socket, etc.; and the wound is continuously isolated and protected during the process of eating and oral hygiene care after the operation, which can greatly improve the patient's experience after tooth extraction; patients generally do not need to visit the doctor again, and after the tooth extraction wound is completely healed, the guard plate can be removed or the immediate denture can be continued to be worn. For the aesthetic area, immediate dentures can also be provided to achieve immediate restoration of the dentition.

[0034] In one embodiment of the present invention, the step of generating the drug delivery hole 3 in the initial model 30 of the drug delivery guide plate for tooth extraction wound comprises: The diameter of the drug administration hole 3 is specifically determined according to the diameter of the needle of the syringe. The diameter of the drug administration hole 3 is larger than the diameter of the needle to facilitate the use of the syringe to inject the drug.

[0035] A cylindrical structure is generated at the center position of the bottom of the hole of the preliminary model 30 of the drug delivery guide in the tooth extraction wound; The specific structure of the cylindrical structure is a cylinder, and the diameter of the cylindrical structure is equal to the inner diameter of the drug delivery hole 3. Of course, the cross-section of the cylindrical structure is not limited to a circle, and can also be a regular polygon or an elliptical structure.

[0036] The diameter of the cylindrical structure is 0.6-1 mm, and preferably, the diameter of the cylindrical structure is 0.8 mm.

[0037] A subtraction Boolean operation is performed between the cylindrical structure and the initial model 30 of the tooth extraction wound medication guide to obtain a final model 40 of the tooth extraction wound medication guide having the medication hole 3 .

[0038] The purpose of performing the subtraction Boolean operation is to form a medication hole 3 corresponding to the cylindrical structure in the initial model 30 of the medication guide for tooth extraction wound, and the position of the medication hole 3 corresponds to the position of the cylindrical structure.

[0039] Figure 5 The schematic diagram of the structure of the final model of the tooth extraction wound medication guide provided by the embodiment of the present invention is illustrated as follows Figure 5 As shown, the tooth extraction wound guard plate includes a guard plate compression portion 1 and retention portions 2 spaced apart at both ends of the guard plate compression portion 1 .

[0040] In one embodiment of the present invention, before the step of generating the drug delivery hole 3 in the initial model 30 of the drug delivery guide for tooth extraction wound, the following steps are further included: Smooth the copied area model.

[0041] It should be noted here that the purpose of smoothing the regional model is to make the model smooth, to ensure that the produced tooth extraction wound guard is more comfortable to wear, without a foreign body sensation, and to improve the user experience.

[0042] In one embodiment of the present invention, after the steps of respectively printing the final model of the tooth extraction wound medication guide, the tooth extraction wound guard plate model and / or the initial model of the immediate denture by using 3D printing technology, the method for digitally designing and manufacturing the tooth extraction wound guard plate further comprises: The drug administration guide, tooth extraction wound guard or immediate denture is tried in and adjusted, and hemostatic, analgesic, covering or hole filling materials are injected through the drug administration hole.

[0043] Figure 5 The schematic diagram of the drug delivery guide plate provided in the embodiment of the present invention is illustrated as follows: Figure 5 As shown, after the medication guide, the tooth extraction wound protection plate or the immediate denture are prepared, they are worn to determine whether the medication guide, the tooth extraction wound protection plate or the immediate denture are suitable, and the shape of the medication guide, the tooth extraction wound protection plate or the immediate denture is adjusted according to the wearing result, so that the medication guide, the tooth extraction wound protection plate or the immediate denture completely matches the shape of the patient's mouth. After adjusting the shape of the medication guide, hemostatic, analgesic, covering or hole filling materials are injected into the medication hole 3 to meet the wound protection needs after tooth extraction surgery. The hole filling material can be a polymer expansion material, chitosan or other substances.

[0044] In one embodiment of the present invention, after the steps of trial-fitting and adjusting the medication guide, the tooth extraction wound protection plate or the immediate denture, the method for digitally designing and manufacturing the tooth extraction wound protection plate further comprises: The tooth extraction wound plate or the immediate denture is post-processed to improve the comfort of the drug administration guide plate, the tooth extraction wound plate or the immediate denture.

[0045] Figure 6 The structural schematic diagram of the tooth extraction wound guard plate model provided by the embodiment of the present invention is illustrated as follows Figure 6 As shown, post-processing of the tooth extraction wound protection plate or the immediate denture includes but is not limited to grinding and polishing the tooth extraction wound protection plate or the immediate denture to make the surface of the tooth extraction wound protection plate or the immediate denture smooth, ensuring that the patient is more comfortable after wearing. The material of the tooth extraction wound protection plate or the immediate denture is resin material, of course, other materials with the same function can also be used.

[0046] In a specific embodiment of the present invention, the method for wound protection, soft tissue recovery and immediate repair after tooth extraction surgery includes: Step S100, using an intraoral scanner to scan the oral cavity of the patient before tooth extraction to obtain a digital model 10 of the initial dentition of the patient; Step S200, performing a virtual tooth extraction operation on the digital model of the initial dentition of the patient, selecting and separating the tooth portion to be extracted along the gingival margin to obtain a digital model of the tooth to be extracted; filling the hole corresponding to the extraction socket according to the curvature on the digital model of the initial dentition after virtual tooth extraction, carving and smoothing the shape of the extraction socket to obtain a digital model of the dentition after tooth extraction; Step S300, using observation software to observe undercuts on the digital model of the dentition after tooth extraction, using the software's undercut filling function to eliminate the undercuts on the adjacent teeth on both sides near the missing tooth gap, and retaining the undercuts on the buccal and lingual sides of the adjacent teeth on both sides of the teeth to be extracted for retention, to obtain a working model of the dentition after tooth extraction; Step S400, selecting the extraction socket corresponding area on the posterior dentition working model, offsetting it toward the root, selecting the extraction socket, the adjacent surfaces of the adjacent teeth on both sides and the occlusal surface area for copying at a position at a predetermined distance from the gingival margin on the mucosal surface, and performing shell extraction, carving and rapid smoothing operations on the copied regional model to obtain a preliminary model of the extraction wound medication guide; and / or generating a medication hole 3 in the preliminary model 30 of the extraction wound medication guide to obtain a final model 40 of the extraction wound medication guide; Step S500, at the position where the gums of the posterior dentition working model are at a predetermined distance from the gingival margin, select the area corresponding to the extraction socket, the adjacent surfaces of the adjacent teeth on both sides near the missing tooth gap, and the buccal and lingual surface areas for copying, and perform shell extraction, carving and rapid smoothing operations on the copied regional models to obtain a tooth extraction wound guard plate model; and / or, for the anterior tooth area or patients with aesthetic requirements, the tooth extraction wound guard plate model and the digital model of the tooth to be extracted can be added by Boolean operation; the occlusal surface of the tooth to be extracted is selected, and offset, carved and smoothed toward the root to avoid contact with the opposing teeth, so as to obtain an initial model of the immediate denture; Step S600, using 3D printing technology to print the final model of the tooth extraction wound medication guide, the tooth extraction wound guard plate model and / or the initial model of the immediate denture, to obtain the medication guide, the tooth extraction wound guard plate and / or the immediate denture; Step S700, trial fitting and adjusting the medication guide, the tooth extraction wound guard or the immediate denture; Step S800, post-processing the tooth extraction wound plate or the immediate denture to improve the comfort of the tooth extraction wound plate or the immediate denture.

[0047] In one embodiment of the present invention, after the filling material is set, the doctor guides the patient to learn how to remove and wear the tooth extraction wound guard and clean it; the patient is advised to wear the tooth extraction wound guard for about 1-2 weeks and clean it 2-3 times a day; after the wound is completely healed, the patient can remove the tooth extraction wound guard by himself or continue to wear the immediate denture.

[0048] In one embodiment of the present invention, the intraoral scanner is 3 Shape Trios 3, CEREC or Shining3D. Of course, the specific type of the intraoral scanner is not limited thereto, and other types of intraoral scanners may also be used. The data storage format of the intraoral scanner is STL format.

[0049] In one embodiment of the present invention, the design software is Geomagic Wrap or Meshmixer software. Of course, the type of design software is not limited thereto, and other software with the same function may also be used. The observation software is ExocadDentalCAD ​​or DentalNavi software. Of course, the type of observation software is not limited thereto, and other software with the same function may also be used.

[0050] In one embodiment of the present invention, the depth of the undercut is 0.2-0.4 mm, preferably, the depth of the undercut is 0.3 mm, and the undercut is used for retention.

[0051] In one embodiment of the present invention, the predetermined distance is 1-1.5 mm, specifically, the predetermined distance is 1 mm, 1.1 mm and 1.2 mm. Preferably, the replication is performed at a distance of 1.1 mm from the gingival margin on the mucosal surface.

[0052] In one embodiment of the present invention, the shelling is used to make the model have a certain thickness. In this embodiment, the thickness of the shelling is 1-2 mm. Specifically, the thickness of the shelling is 1 mm, 1.4 mm, 1.6 mm or other sizes.

[0053] The method for wound protection, soft tissue recovery and immediate repair after tooth extraction provided in the embodiment of the present invention adopts full-process digital design, processing and production, uses an intraoral scanner to quickly complete data acquisition, simplifies the design process on the technician side, and uses 3D printing technology to save materials. The tooth can be worn immediately after extraction, providing an effective, feasible and easy-to-promote solution to solve the problems of wound exposure and poor hemostasis after tooth extraction.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for wound protection, soft tissue recovery and immediate repair after tooth extraction, characterized in that: include: Use an intraoral scanner to scan the patient's oral cavity before tooth extraction to obtain a digital model of the patient's initial dentition; Performing a virtual tooth extraction operation on the digital model of the patient's initial dentition, selecting and separating the tooth portion to be extracted along the gingival margin to obtain a digital model of the tooth to be extracted; filling the hole corresponding to the extraction socket according to the curvature on the digital model of the initial dentition after the virtual tooth extraction, carving and smoothing the shape of the extraction socket to obtain a digital model of the dentition after tooth extraction; The undercuts of the digital model of the posterior dentition are observed by using observation software, and the undercuts on the adjacent teeth near the missing teeth are eliminated by using the undercut filling function of the software, and the undercuts on the buccal and lingual sides of the adjacent teeth on both sides of the teeth to be extracted are reserved for retention, so as to obtain a working model of the posterior dentition; Selecting the extraction socket corresponding to the area on the posterior dentition working model, offsetting it toward the root, selecting the extraction socket, the adjacent surfaces of the adjacent teeth on both sides and the occlusal surface area for copying at a predetermined distance from the gingival margin to the mucosal surface, and performing shell extraction, carving and rapid smoothing operations on the copied regional models to obtain a preliminary model of the extraction wound medication guide; and / or generating medication holes in the preliminary model of the extraction wound medication guide to obtain a final model of the extraction wound medication guide; At the position where the gums of the posterior dentition working model are at a predetermined distance from the gingival margin, the corresponding area of ​​the extraction socket, the adjacent surfaces of the adjacent teeth on both sides near the missing tooth gap, and the buccal and lingual surface areas are selected for copying, and the copied regional models are shelled, carved, and quickly smoothed to obtain a tooth extraction wound guard plate model; and / or, for the anterior tooth area or patients with aesthetic requirements, the tooth extraction wound guard plate model and the digital model of the tooth to be extracted can be added by Boolean operation; the occlusal surface of the tooth to be extracted is selected, and offset, carved, and smoothed toward the root to avoid contact with the opposing teeth to obtain an initial model of the immediate denture; The final model of the tooth extraction wound medication guide, the tooth extraction wound guard plate model and / or the initial model of the immediate denture are printed respectively by using 3D printing technology to obtain the medication guide, the tooth extraction wound guard plate and / or the immediate denture.

2. The digital design and production method of the tooth extraction wound protection plate according to claim 1 is characterized in that: The step of generating a drug delivery hole in the initial model of the drug delivery guide plate for tooth extraction wound comprises: Generating a cylindrical structure at the center of the bottom of the tooth extraction socket of the initial model of the tooth extraction wound medication guide; A subtraction Boolean operation is performed between the cylindrical structure and the initial model of the tooth extraction wound medication guide to obtain a final model of the tooth extraction wound medication guide having the medication hole.

3. The digital design and production method of the tooth extraction wound protection plate according to claim 1 is characterized in that: Before the step of generating a drug delivery hole in the initial model of the drug delivery guide plate for tooth extraction wound, the method further comprises: Smooth the copied area model.

4. The method for digitally designing and making a tooth extraction wound protection plate according to any one of claims 1 to 3, characterized in that: After the step of respectively printing the final model of the tooth extraction wound medication guide plate, the tooth extraction wound guard plate model and / or the initial model of the immediate denture by using 3D printing technology, the method further includes: The drug administration guide, the tooth extraction wound guard or the immediate denture is tried on and adjusted.

5. The method for digitally designing and making a tooth extraction wound protection plate according to any one of claims 1 to 3, characterized in that: Before the step of trying on and adjusting the drug administration guide plate, the tooth extraction wound guard plate or the immediate denture, the method further comprises: The tooth extraction wound guard plate or the immediate denture is post-processed to improve the comfort of the tooth extraction wound guard plate or the immediate denture.

6. The method for digitally designing and making a tooth extraction wound protection plate according to any one of claims 1 to 3, characterized in that: The intraoral scanner is 3 Shape Trios 3, CEREC or Shining 3D.

7. The method for digitally designing and making a tooth extraction wound protection plate according to any one of claims 1 to 3, characterized in that: The design software is Geomagic Wrap or Meshmixer software, and the observation software is Exocad DentalCAD ​​or DentalNavi software.

8. The method for digitally designing and making a tooth extraction wound protection plate according to any one of claims 1 to 3, characterized in that: The depth of the undercut is 0.2-0.4 mm.

9. The method for digitally designing and making a tooth extraction wound protection plate according to any one of claims 1 to 3, characterized in that: The predetermined distance is 1-1.5 mm, and the thickness of the drawn shell is 1-2 mm.

10. The digital design and production method of tooth extraction wound protection plate according to claim 2, characterized in that: The diameter of the cylindrical structure is 0.6-1 mm.

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