Digital dentition defect repair gap retainer and manufacturing method

Abstract

The invention discloses a digital dentition defect repair gap retainer and a manufacturing method, and belongs to the field of oral cavity repair. The first fixing body is arranged on the tooth buccal surface of the same jaw of the gap, and the second fixing body is arranged on the tooth buccal surface of the opposite jaw of the gap, so that the gap can be accurately kept aiming at a specific gap position. By acting on the same jaw teeth and the opposite jaw teeth respectively, the size and the spatial position of the gap can be maintained from the upper direction and the lower direction, and surrounding teeth are prevented from moving towards the gap due to the natural growth trend. The first fixing body and the second fixing body are both of a net-shaped structure, the irregular shape of the surface of the tooth can be better attached, the contact area with the tooth is increased, and therefore the stability of the fixing bodies on the tooth is improved, and the surrounding tooth is prevented from moving towards the gap. In addition, the adhesive can better permeate into the net-shaped structure, so that the adhesive force between the fixing body and the teeth is enhanced, and the retainer is not easy to fall off in the oral environment. Therefore, the retainer can solve the problems in the prior art.

Description

Technical Field

[0001] The invention belongs to the technical field of oral restoration, and relates to a digital dentition defect restoration space maintainer and a manufacturing method thereof. Background Art

[0002] A tooth missing space maintainer is a device used in oral treatment, mainly used to maintain the position of adjacent teeth that may change due to tooth missing, and prevent them from tilting or moving toward the edentulous area. This type of retainer is widely used especially in children and adolescents to maintain the space between teeth until the eruption of permanent teeth. However, in clinical practice, there is another type of patient who lacks awareness of maintaining tooth missing space, that is, patients whose permanent teeth have been missing for a long time without restoration. The molars of these patients have been extracted for many years, or the residual roots and crowns in the mouth have not been treated in time, resulting in the elongation of the antagonist teeth and the tilting and displacement of the adjacent teeth. The repair space is seriously insufficient, making subsequent treatment more difficult. Especially for patients with periodontal disease or those with missing mandibular second molars, the adjacent teeth and antagonist teeth often have obvious displacement in a short period of time, which increases the difficulty of repair.

[0003] At present, space maintainers are mainly wire loop space maintainers, distal guide plate space maintainers, palatal arch space maintainers, lingual arch space maintainers, etc. The wire loop space maintainer is a device that uses a retainer on the teeth on the distal side of the missing tooth, and welds a ring-shaped metal wire on the retainer to the teeth on the mesial side of the distal gap to maintain the missing tooth space. Depending on the retainer, there are ringed wire loop space maintainers, prefabricated crown space maintainers, cast crown space maintainers and composite resin high-strength fiber space maintainers. The distal guide plate space maintainer is mainly for children with premature loss of deciduous molars. The palatal arch space maintainer is a retainer that fixes both sides of the palatal arch on the first permanent molar or second molar of the maxilla to maintain the length of the dental arch and the tooth space. It is mostly used in cases where both sides of the maxilla are missing teeth. Lingual arch space maintainers are devices that fix the two ends of the lingual arch to the first permanent molars or second molars on both sides of the mandible to maintain the length of the dental arch and the space between the teeth. They are mostly used when both sides of the mandible are missing teeth. However, these traditional space maintainers may be affected by factors such as chewing force and oral movement in the oral environment, and are prone to loosening, falling off, and having obvious foreign body sensation. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the space maintainer in the prior art may be affected by factors such as chewing force and oral movement in the oral environment, and is prone to loosening, falling off, and having an obvious foreign body sensation, and to provide a digital dentition defect repair space maintainer and a manufacturing method.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: The present invention provides a digital dentition defect repair space maintainer, including a space maintainer for teeth in the same jaw and a space maintainer for teeth in the opposite jaw; The gap teeth retainer includes a first fixing body; the first fixing body is arranged on the buccal surface of the gap teeth in the same jaw; the gap teeth retainer includes a second fixing body; the second fixing body is arranged on the buccal surface of the gap teeth in the opposite jaw, and the first fixing body and the second fixing body are both mesh structures.

[0006] Preferably, there are a plurality of first fixing bodies, and adjacent first fixing bodies are connected via a first connecting body.

[0007] Preferably, there are a plurality of second fixing bodies, and adjacent second fixing bodies are connected via a second connecting body.

[0008] Preferably, glue overflow holes are provided on both the first fixing body and the second fixing body.

[0009] Preferably, there are a plurality of the glue overflow holes, and the plurality of glue overflow holes are evenly distributed.

[0010] Preferably, the thickness of the tooth retainer for the same gap and the tooth retainer for the opposing gap are both greater than or equal to 0.5 mm, the tooth retainer for the same gap matches the buccal contour of the tooth for the same gap, and the tooth retainer for the opposing gap matches the buccal contour of the tooth for the opposing gap.

[0011] Preferably, the gap-joint tooth retainer is arranged on the buccal surface of the gap-joint tooth using composite resin, and the gap-opposite tooth retainer is arranged on the buccal surface of the gap-opposite tooth using composite resin.

[0012] Preferably, the gap-joint tooth retainer and the gap-opposite tooth retainer are both at a distance of greater than or equal to 2 mm from the gingival margin and at a distance of greater than or equal to 1 mm from the front end of the tooth.

[0013] Preferably, the gap-joint tooth retainer and the gap-opposite tooth retainer are both made of cobalt-chromium alloy material or cast porcelain material.

[0014] The present invention provides a method for manufacturing a digital edentulous repair space maintainer, comprising: Obtain the target patient's maxillary and mandibular oral digital data before or after tooth extraction, as well as the maxillary and mandibular occlusal relationship; Construct a three-dimensional dental model based on the oral digital data and the occlusal relationship between the maxillary and mandibular parts; Obtain the target patient's tooth defect information based on the three-dimensional dentition model; According to the three-dimensional dentition model and tooth defect information, a three-dimensional model of the space maintainer is obtained; The space maintainer is obtained according to the space maintainer three-dimensional model.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The digital dentition defect repair space maintainer proposed by the present invention can effectively maintain the size and position of the missing tooth gap by setting the missing tooth retainer on the same jaw tooth of the missing gap and setting the missing tooth retainer on the opposite jaw tooth of the missing gap. Specifically, the first fixed body is set on the buccal surface of the same jaw tooth of the missing gap, and the second fixed body is set on the buccal surface of the opposite jaw tooth of the missing gap, so that the gap can be accurately maintained for a specific gap position. By acting on the same jaw tooth and the opposite jaw tooth respectively, the size and spatial position of the gap can be maintained from both the upper and lower directions, and the surrounding teeth are prevented from moving toward the gap due to the natural growth trend, so as to reserve enough space for subsequent repair treatment. The first fixed body and the second fixed body both adopt a mesh structure, which has the following advantages. On the one hand, the mesh structure can better fit the irregular shape of the tooth surface, increase the contact area with the tooth, thereby improving the stability of the fixed body on the tooth and preventing the surrounding teeth from moving toward the gap. On the other hand, the mesh structure allows the adhesive to penetrate better, enhances the bonding force between the fixed body and the tooth, and ensures that the retainer is not easy to fall off in the oral environment. Therefore, the retainer provided by the present invention can solve the problems existing in the prior art.

[0016] Furthermore, there are several first fixing bodies and they are connected by a first connector, and the same is true for the second fixing body. This design makes the fixation of the retainer on the teeth more stable, and the multiple fixing bodies work together to disperse the bite force and various forces generated by oral movement, reducing the risk of a single fixing body loosening or falling off due to excessive force. At the same time, the connector connects the various fixing bodies into a whole, which improves the integrity of the retainer and enables it to play a better role in the oral environment. Adapt to different tooth forms: Multiple fixings can better adapt to the tooth forms and gap conditions of different patients. Since the size, shape and arrangement of each person's teeth are different, a single fixing may not be able to fully fit all teeth. Multiple fixings can be adjusted and arranged according to the specific dental conditions to improve the fit between the retainer and the teeth, thereby enhancing the fixation effect.

[0017] Furthermore, a number of overflow holes are opened on the first fixing body and the second fixing body, and are evenly distributed. When the retainer is fixed to the teeth with an adhesive, the adhesive can seep out through the overflow holes. On the one hand, it can ensure that the adhesive fully fills the gap between the fixing body and the teeth, so that the fixing body and the teeth are tightly combined and the bonding strength is improved; on the other hand, the overflowed adhesive can form a uniform film on the surface of the teeth, further enhancing the fixing effect, and also helping to prevent the adhesive from forming bubbles or gaps between the fixing body and the teeth, affecting the bonding quality. Advantages of uniform distribution: Uniform distribution of overflow holes can make the adhesive more evenly distributed between the fixing body and the teeth, thereby ensuring consistent bonding strength in all parts.

[0018] Furthermore, the thickness of the gap-joint retainer and the gap-opposing retainer is greater than or equal to 0.5 mm, ensuring that the retainer has a certain strength and durability. The gap-joint retainer and the gap-opposing retainer match the tooth contour to improve comfort and optimize the fixation effect.

[0019] Furthermore, the distance between the retainer and the gum margin is greater than or equal to 2mm, which can reduce the stimulation and pressure on the gums and avoid gum inflammation, atrophy and other problems. The distance between the retainer and the front end of the teeth is greater than or equal to 1mm, which can prevent the retainer from directly contacting the opposing teeth during chewing and reduce wear and damage to the front end of the teeth. At the same time, it also reserves a certain amount of space for the normal growth and movement of teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a structural diagram of the digital dentition defect repair space maintainer of the present invention.

[0022] Among them: 1-a retainer for teeth in the same jaw with a gap, 2-a retainer for teeth in the opposite jaw with a gap, 3-a first fixing body, 4-a second fixing body, 5-a first connecting body, and 6-a second connecting body. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings: The present invention proposes a digital dentition defect repair space maintainer, such as Figure 1 As shown, it includes a retainer 1 for gap teeth in the same jaw and a retainer 2 for gap teeth in the opposite jaw; the retainer 1 for gap teeth in the same jaw includes a first fixing body 3; the first fixing body 3 is arranged on the buccal surface of the gap teeth in the same jaw; the retainer 2 for gap teeth in the opposite jaw includes a second fixing body 4; the second fixing body 4 is arranged on the buccal surface of the gap teeth in the opposite jaw, and the first fixing body 3 and the second fixing body 4 are both mesh structures.

[0030] By setting a gap-joint tooth retainer 1 on the gap-joint tooth, and setting a gap-opposite tooth retainer 2 on the gap-joint tooth, the size and position of the gap between the gap and the tooth can be effectively maintained. Specifically: the first fixed body 3 is set on the buccal surface of the gap-joint tooth, and the second fixed body 4 is set on the buccal surface of the gap-opposite tooth, so that the gap can be accurately maintained for a specific gap position. By acting on the same jaw tooth and the opposing jaw tooth respectively, the size and spatial position of the gap can be maintained from the vertical direction and the shape-shifting direction, and the surrounding teeth are prevented from moving toward the gap due to the natural growth trend, so as to reserve enough space for subsequent restorative treatment. The first fixed body 3 and the second fixed body 4 both adopt a mesh structure, which has the following advantages. On the one hand, the mesh structure can better fit the irregular shape of the tooth surface, increase the contact area with the tooth, thereby improving the stability of the fixed body on the tooth and preventing the surrounding teeth from moving toward the gap. On the other hand, the mesh structure allows the adhesive to penetrate better, enhances the bonding force between the fixed body and the tooth, and ensures that the retainer is not easy to fall off in the oral environment. Therefore, the retainer proposed by the present invention can provide correct guidance for the eruption of permanent teeth at the gap, ensuring that the permanent teeth can grow in the normal position and direction. For example, when the deciduous teeth fall out prematurely due to caries or trauma, the space maintainer can prevent the adjacent teeth from tilting toward the gap side, retaining sufficient space for the eruption of the successor permanent teeth, and avoiding the misplaced eruption or impaction of the permanent teeth. The presence of the retainer can limit the excessive growth of the opposing teeth, maintain the normal occlusal height, and create good conditions for subsequent restorative treatment. At the same time, it can also prevent the excessive elongation of the opposing teeth and maintain the normal physiological functions of the oral cavity.

[0031] There are a plurality of first fixing bodies 3, and adjacent first fixing bodies 3 are connected by a first connector 5. There are a plurality of second fixing bodies 4, and adjacent second fixing bodies 4 are connected by a second connector 6. Glue overflow holes are provided on both the first fixing body 3 and the second fixing body 4. There are a plurality of glue overflow holes, and the plurality of glue overflow holes are evenly distributed.

[0032] Multiple fixing bodies are connected: there are several first fixing bodies 3 and they are connected by the first connecting body 5, and the second fixing body 4 is the same. This design makes the fixation of the retainer on the teeth more stable, and the multiple fixing bodies work together to disperse the bite force and various forces generated by oral movement, reducing the risk of a single fixing body loosening or falling off due to excessive force. At the same time, the connecting body connects the various fixing bodies into a whole, which improves the integrity of the retainer and enables it to play a better role in the oral environment. Adapt to different tooth forms: multiple fixing bodies can better adapt to the tooth forms and gap conditions of different patients. Since the size, shape and arrangement of each person's teeth are different, a single fixing body may not be able to fully fit all teeth. Multiple fixing bodies can be adjusted and arranged according to the specific dental conditions to improve the fit between the retainer and the teeth, thereby enhancing the fixation effect.

[0033] The role of the overflow holes: a number of overflow holes are provided on the first fixing body 3 and the second fixing body 4, and they are evenly distributed. When the retainer is fixed on the teeth with an adhesive, the adhesive can seep out through the overflow holes. On the one hand, it can ensure that the adhesive fully fills the gap between the fixing body and the teeth, so that the fixing body and the teeth are closely combined and the bonding force is improved; on the other hand, the overflowed adhesive can form a uniform film on the surface of the teeth, further enhancing the fixing effect, and also helps to prevent the adhesive from forming bubbles or gaps between the fixing body and the teeth, which affects the bonding quality. Advantages of uniform distribution: The uniform distribution of the overflow holes can make the distribution of the adhesive between the fixing body and the teeth more uniform, thereby ensuring the consistency of the bonding force of each part. In this way, the problem of local loose fixation or stress concentration caused by uneven distribution of the adhesive can be avoided, and the stability and service life of the retainer can be improved. Reduce the accumulation of food residues: The existence of the connector between multiple fixing bodies and the overflow holes can reduce the accumulation of food residues between the retainer and the teeth. The accumulation of food residues can easily lead to the growth of oral bacteria, causing oral diseases such as caries and gingivitis. This structural design makes oral cleaning easier, and patients can better use tools such as toothbrushes and dental floss to clean and maintain oral hygiene. Good for gum health: Evenly distributed overflow holes can reduce irritation to the gums. If too much adhesive accumulates between the fixed body and the teeth, it may cause pressure on the gums, affecting the blood circulation and health of the gums. The overflow holes can make the adhesive distribution more reasonable, reduce the pressure on the gums, and is beneficial to the health and recovery of the gums.

[0034] Preferably, the thickness of the gap tooth retainer 1 and the gap tooth retainer 2 is greater than or equal to 0.5 mm, and the gap tooth retainer 1 matches the buccal contour of the gap tooth, and the gap tooth retainer 2 matches the buccal contour of the gap tooth. The thickness of the gap tooth retainer 1 and the gap tooth retainer 2 is greater than or equal to 0.5 mm, which ensures that the retainer has certain strength and durability. In the oral environment, the retainer needs to withstand various external forces caused by chewing pressure, oral movement and daily cleaning. Sufficient thickness can reduce the risk of deformation and damage of the retainer due to external force and extend its service life. A certain thickness helps the retainer to better fit the tooth surface, increase the contact area with the teeth, and thus improve the stability of fixation. It avoids the problem of loosening and displacement due to being too thin, and ensures that the size and position of the gap between the missing teeth can be effectively maintained. The gap retainer 1 for the same teeth and the gap retainer 2 for the opposite teeth are matched with the tooth contours to improve comfort and optimize the fixation effect. Specifically, the gap retainer 1 for the same teeth is matched with the buccal contours of the gap same teeth, and the gap retainer 2 for the opposite teeth is matched with the buccal contours of the gap opposite teeth, which can make the retainers fit the teeth more closely, reduce the stimulation to the oral soft tissues, and improve the comfort of the patients when wearing them. The patients will not feel an obvious foreign body sensation when wearing the retainers, which is conducive to the patients' adaptation and long-term wearing. Retainers that fit the tooth contours can better utilize the anatomical structure of the teeth for fixation, thereby improving the retention force of the retainers. For example, better mechanical locking knots can be formed at the concave and convex parts of the teeth, so that the retainers are more firmly fixed on the teeth and are not easy to fall off.

[0035] The gap-joint tooth retainer 1 is provided on the buccal surface of the gap-joint tooth using composite resin, and the gap-opposite tooth retainer 2 is provided on the buccal surface of the gap-opposite tooth using composite resin. The composite resin has good adhesion to tooth tissue, which can enhance the fixing effect of the retainer. At the same time, when installing and adjusting the retainer, the composite resin can be more easily shaped and cured, which is convenient for operation.

[0036] The gap-joint-teeth retainer 1 and the gap-opposite-teeth retainer 2 are both at a distance of greater than or equal to 2 mm from the gingival margin, and greater than or equal to 1 mm from the front end of the teeth. The distance between the retainer and the gingival margin is greater than or equal to 2 mm, which can reduce stimulation and pressure on the gums, and avoid causing gum inflammation, atrophy and other problems. Adequate distance provides a certain amount of space for the gums, which is beneficial to the blood circulation of the gum tissue and the maintenance of normal physiological functions. The distance from the front end of the teeth is greater than or equal to 1 mm, which can prevent the retainer from directly contacting the opposing teeth during chewing, reducing wear and damage to the front end of the teeth. At the same time, a certain amount of space is reserved for the normal growth and movement of teeth.

[0037] The gap-joint tooth retainer 1 and the gap-opposite tooth retainer 2 are both made of cobalt-chromium alloy material or cast porcelain material. Cobalt-chromium alloy and cast porcelain materials have high strength and hardness, can withstand greater chewing pressure, and are not easily deformed or damaged. They are suitable for various dentition defect situations, especially for patients in the posterior teeth area or with greater bite force, and can provide a more reliable retention effect. And these materials have good biocompatibility and will not cause adverse stimulation or allergic reactions to oral tissues. Patients are safer and more comfortable when wearing retainers. Cobalt-chromium alloy and cast porcelain materials have strong corrosion resistance and can maintain stable performance in the oral environment for a long time. They are not easily affected by factors such as saliva and food, reducing the risk of discoloration and damage of the retainer.

[0038] The present invention provides a method for manufacturing a digital edentulous space maintainer, which is characterized by comprising the following steps: Obtain the target patient's maxillary and mandibular oral digital data before or after tooth extraction, as well as the maxillary and mandibular occlusal relationship; Construct a three-dimensional dental model based on the oral digital data and the occlusal relationship between the maxillary and mandibular parts; Obtain the target patient's tooth defect information based on the three-dimensional dentition model; According to the three-dimensional dentition model and tooth defect information, a three-dimensional model of the space maintainer is obtained; The space maintainer is obtained according to the space maintainer three-dimensional model.

[0039] The present invention provides a digital dentition defect repair space maintainer, and the operation steps are as follows: Step 1: Before or shortly after tooth extraction, an experienced technician will use a 3Shape oral scanner to perform a digital oral scan to collect digital oral data of the patient; Step 2: Import the scan data (STL format) obtained in the previous step into 3Shape design software to perform 3D reconstruction of dentition and occlusion; design retainers on the buccal surfaces of the crowns of adjacent teeth and opposing teeth in the edentulous area; Step 3: Try the digital space maintainer in the patient's mouth; clean the patient's tooth surface, etch and rinse the tooth surface, apply adhesive, and light-cure; choose a fluid resin that is close to the tooth surface and apply it on the lips and cheeks, place the retainer, clean the excess adhesive resin, and light-cure; after bonding is completed, check for occlusal interference, blend, and polish.

[0040] The digital space maintainer proposed by the present invention has the following advantages: 1) short design and production cycle; 2) small device and little foreign body sensation; 3) immediate restoration of beauty for patients with missing front teeth.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A digital edentulous repair space maintainer, characterized in that: It comprises a tooth retainer for the same jaw with a gap (1) and a tooth retainer for the opposite jaw with a gap (2); The gap tooth retainer (1) comprises a first fixing body (3); the first fixing body (3) is arranged on the buccal surface of the gap tooth in the same jaw; the gap tooth retainer (2) comprises a second fixing body (4); the second fixing body (4) is arranged on the buccal surface of the gap tooth in the opposite jaw, and the first fixing body (3) and the second fixing body (4) are both mesh structures.

2. The digital dentition defect repair space maintainer according to claim 1, characterized in that: There are a plurality of first fixing bodies (3), and adjacent first fixing bodies (3) are connected via a first connecting body (5).

3. The digital dentition defect repair space maintainer according to claim 1, characterized in that: There are a plurality of second fixing bodies (4), and adjacent second fixing bodies (4) are connected via a second connecting body (6).

4. The digital dentition defect repair space maintainer according to claim 1, characterized in that: Glue overflow holes are provided on both the first fixing body (3) and the second fixing body (4).

5. The digital dentition defect repair space maintainer according to claim 4, characterized in that: There are a plurality of the glue overflow holes, and the plurality of glue overflow holes are evenly distributed.

6. The digital dentition defect repair space maintainer according to claim 1, characterized in that: The thickness of the gap tooth retainer (1) and the gap tooth retainer (2) are both greater than or equal to 0.5 mm. The gap tooth retainer (1) matches the buccal contour of the gap tooth in the same jaw, and the gap tooth retainer (2) matches the buccal contour of the gap tooth in the opposite jaw.

7. The digital dentition defect repair space maintainer according to claim 1, characterized in that: The gap-joint tooth retainer (1) is arranged on the buccal surface of the gap-joint tooth using composite resin, and the gap-opposite tooth retainer (2) is arranged on the buccal surface of the gap-opposite tooth using composite resin.

8. The digital dentition defect repair space maintainer according to claim 1, characterized in that: The gap-joint tooth retainer (1) and the gap-opposite tooth retainer (2) are both located at a distance greater than or equal to 2 mm from the gingival margin and at a distance greater than or equal to 1 mm from the front end of the tooth.

9. The digital dentition defect repair space maintainer according to claim 1, characterized in that: The gap-deficient same-jaw tooth retainer (1) and the gap-deficient opposite-jaw tooth retainer (2) are both made of cobalt-chromium alloy material or cast porcelain material.

10. A method for manufacturing a digital edentulous repair space maintainer, characterized in that: The digital dentition defect repair space maintainer according to any one of claims 1 to 9 comprises: Obtain the target patient's maxillary and mandibular oral digital data before or after tooth extraction, as well as the maxillary and mandibular occlusal relationship; Construct a three-dimensional dental model based on the oral digital data and the occlusal relationship between the maxillary and mandibular parts; Obtain the target patient's tooth defect information based on the three-dimensional dentition model; According to the three-dimensional dentition model and tooth defect information, a three-dimensional model of the space maintainer is obtained; The space maintainer is obtained according to the space maintainer three-dimensional model.

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