CN219461456U - Dental instrument and dental appliance system - Google Patents

Abstract

The application relates to the technical field of tooth orthodontics, and discloses a dental instrument and tooth correction system. Because adult tooth root is thicker, especially the cuspid is low difficult, and its expression rate of being low is lower, causes the tooth position that the cuspid is far and well to be taken off easily, so put forward through setting up the bellying to the anti tooth position, when realizing the interlock state of wearing the process, the appliance is owing to bellying and to the jaw contact and the anti-unhairing force that prevents second tooth collection and the separation of second district produced to produce the trend that removes to the anti tooth, avoid the easy problem of unhairing of anti tooth, make the success rate of front tooth adduction higher, promote the expression rate of correction scheme. Dental appliances systems are also included in the present application.

Description

Dental instrument and dental appliance system

Technical Field

The embodiment of the application relates to the technical field of tooth orthodontics, in particular to a dental instrument and a tooth correcting system.

Background

With the continuous development of society, the tooth correction is adopted by more and more people, and the tooth correction is to fix correction appliances composed of archwires, brackets and the like aiming at tooth arrangement deformity or misjaw, or removable invisible dental appliances are used for applying three-dimensional correction force and moment to teeth, adjusting balance and coordination among facial bones, teeth and maxillofacial muscles, improving facial, alignment dentition and improving chewing efficiency after correction for a period of time.

In the orthodontic treatment process, any force applied to the orthodontic teeth to enable the orthodontic teeth to move inevitably generates a force with opposite directions and the same size at the same time, and a structure capable of resisting the reaction force of the orthodontic force is called as an 'anchorage'. Teeth are commonly used as an anchorage in orthodontic treatment, and the teeth as an anchorage resist the action of the reaction force generated by the correction force on the teeth. Whether the orthodontic tooth can move according to the direction and degree of the design requirement has an important relation with the design of the anchorage part.

For invisible correction, when the anchorage is insufficient, the appliance is often taken off, namely the appliance is not attached to the corresponding tooth position, and the tooth movement effect in the scheme design cannot be continuously exerted by the tooth cover. For this situation, the physician often chooses to re-collect patient data, submit fine adjustments, redesign the appliance, and so forth. In order to avoid the problem that the appliance is not sleeved due to insufficient anchorage, the anchorage force of the anchorage teeth is enhanced by the methods of designing accessories, modifying the shapes of the accessories, increasing the number of the accessories, preparing the anchorage force and the like in treatment, and even the appliance can wrap the anchorage teeth by reducing the elastic modulus of the appliance membrane. The method has the advantages that adverse effects can occur due to different application tooth positions and different intraoral conditions, for example, when the lower front teeth need to be depressed, the front molar teeth of the lower front teeth and the incisors are frequently used as the anchorage teeth, the size of the accessory needs to be increased for protecting the anchorage, and the effect can be influenced due to the fact that the undercut position of the first front molar teeth is insufficient, and the size of the receivable accessory is limited; moreover, the situation is easy to cause the non-fitting between the appliance and the accessory, thereby affecting the effect. If the number of accessories is increased, the overall tolerance of the dental appliance in the tooth moving process is reduced, and the probability of the appliance to be out of the sleeve is increased. If the elastic modulus of the correction device is reduced, the expression rate of acting force is insufficient, the correction effect is reduced, the correction steps are greatly increased, and the treatment efficiency is reduced. The doctor can select to restart continuously to produce new appliance to control the anchorage, and the method increases the treatment cost and prolongs the treatment time. In addition, anterior adduction may occur: the pendulum effect, the extension of the front teeth, the excessive tongue inclination and the like can not only increase the deep covering trend, but also cause the unhooking when the front teeth are low and the efficiency is poor. The existing mode can simultaneously adopt the depression accessory to conduct anterior tooth depression, and the actual condition can appear depressing inefficiency.

Disclosure of Invention

The main aim of the embodiment of the application is to provide a dental instrument and a tooth correction system, which solve the problem of how to avoid the appliance from being out of sleeve and improve the expression rate of the correction scheme when realizing the adduction of front teeth.

To achieve the above object, an embodiment of the present application provides a dental appliance for wearing on a dental jaw of a patient, including a first shell-like body capable of accommodating at least a part of teeth of the patient, the first shell-like body being of unitary construction, the first shell-like body including: a first section, which is a plurality of tooth receiving cavities for receiving a first tooth set, for enabling sagittal distal movement of the first tooth set, the first tooth set belonging to anterior teeth; a second section for a plurality of tooth receiving cavities for receiving a second set of teeth, the teeth in the second set of teeth providing a sagittal anchorage for the teeth in the first set of teeth when moved distally; wherein a bulge is arranged between the second section and the jaw pair; the second section is subjected to a counter-stripping force resulting from contact of the projections with the opposing jaw to prevent separation of the second set of teeth from the second section while the upper and lower jaws are in the occluded state to assist in sagittal movement of the first set of teeth under the influence of the first section.

Embodiments of the present application also provide a dental appliance system comprising a plurality of sets of dental appliances, at least one of the sets of dental appliances comprising a dental appliance as described above.

In one embodiment, the dental appliance includes a first section and a second section for respectively receiving a first set of teeth belonging to the anterior teeth area to be moved sagittal and distal, and a second set of teeth for providing a bearing force to the first set of teeth. The inventor finds that when the tooth is in front teeth, the tooth root of an adult is thicker, particularly the cuspid is difficult to be depressed, the depressed expression rate is lower, and the cuspid is easy to be unhooked at the middle-oriented tooth position, so that the problem that the anchorage tooth is easy to be unhooked is solved, the success rate of the front teeth adduction is higher, and the expression rate of an correcting scheme is improved due to the fact that the anti-unhooking force which is generated by the fact that the second tooth set is separated from the second section due to the fact that the bulge and the opposite jaw are contacted is provided by the correcting device when the occlusion state of the wearing process is realized. Meanwhile, when the tooth missing position or a larger gap exists, the rear teeth can be prevented from being inclined proximally.

Further, the height of the protruding part towards the jaw protrusion satisfies the following conditions: at least one tooth position of the posterior tooth area is separated and not contacted when the upper jaw and the lower jaw are in the occlusion state. The above embodiments define that at least one of the dental sites in the posterior region is separated from contact when the dental instrument is in the occluded state, ensuring that the appliance is accurately forced against the site of the tooth.

Further, the height of the protruding part protruding towards the opposite jaw is less than or equal to 8mm.

Further, the area of the protruding part close to the jaw side satisfies the following conditions: and when the upper jaw and the lower jaw are in a meshed state, the projection area of the convex part and the opposite jaw contact surface relative to the jaw plane is larger than a preset value, and the preset value is related to the projection area of the meshed surface of the tooth where the convex part is positioned relative to the jaw plane. And the contact position with larger area is adopted, so that the stability during contact is improved.

Further, the preset value is 0.8-1.2 times of the projection area of the occlusal surface of the tooth at the tooth position where the protruding part is located relative to the jaw plane. Further, the length of the convex part in the mesial-distal direction is 0.8-1.2 times of the maximum length of the teeth in the mesial-distal direction of the set tooth position. Further, the length of the protruding part in the cheek-tongue lateral direction is 0.8-1.2 times of the maximum length of the teeth of the set tooth position in the cheek-tongue lateral direction. The above embodiments define the projection bite side area, wrap around contact, so that the contact is stable, distributing the pressure experienced by the projection.

Further, the protrusion is located on the occlusal surface of the tooth receiving cavity on the second section adjacent the first section. The protrusions are positioned as close as possible to the anterior area, providing as much resistance to the anterior area as possible.

Further, the protruding portion is formed by protruding the tooth receiving cavity in the second section in the jaw-facing direction.

Further, the boss is located in the second section at a jaw alignment position adjacent to the tooth receiving cavity of the first section.

Further, the dental implant also comprises a second shell-shaped body, wherein the second shell-shaped body and the first shell-shaped body respectively correspond to the upper jaw and the lower jaw of the same patient, and the protruding part is formed by protruding the tooth storage cavity of the second shell-shaped body towards the jaw direction. The above embodiments define the bosses and the anchorage teeth on the appliance on the opposite jaw side, facilitating the integrated design of the dental appliance on the premise that the appliance needs to be worn on the opposite jaw side.

Further, the protrusion is provided on the occlusal surface of the teeth of the jaw adjacent to the teeth receiving cavity of the first section in the second section. The limiting convex part of the embodiment can be directly arranged on the surface of the teeth, and can be not limited by whether the appliance is worn or not, so that more various embodiments are realized.

Further, the portable medical device further comprises a second shell-shaped body, wherein the second shell-shaped body and the first shell-shaped body correspond to the upper jaw and the lower jaw of the same patient respectively, the position of the second shell-shaped body corresponding to the protruding portion is hollowed out, and when the second shell-shaped body is worn, the protruding portion penetrates through the hollowed-out position. The protruding part and the anchorage teeth are limited on the appliance on the opposite jaw side by the embodiment, and the protruding part is exposed through the hollow part, so that the protruding part is not influenced by the wearing of the appliance on the premise that the appliance is needed to be worn on the jaw side, the protruding part is made of various materials, and firmer materials can be adopted.

Further, the first set of teeth includes a front teeth area plurality of teeth, the second set of teeth includes a first premolars, and the bosses are disposed on an occlusal surface of a teeth receiving cavity in the second section that receives the first premolars. The first premolars are selected as the anchorage teeth in the above embodiment, so that the stability of the anchorage force when the anterior teeth are depressed can be further ensured.

Further, there are two protruding portions corresponding to the double-sided first premolars respectively.

Further, the first set of teeth includes at least one posterior tooth region tooth that is not a first premolars, and the projection is disposed on a tooth adjacent to and centered relative to the first set of teeth. The above embodiments provide various bump arrangement rules, so that the anchorage teeth are more stable.

Further, the sagittal movement of at least one tooth of the first set of teeth is greater than or equal to 2mm.

Further, the teeth in the second set of teeth are provided with a retention attachment, and the tooth receiving cavities of the second section include sub-receiving cavities thereon for receiving the retention attachment. The retention accessory and the boss are disposed corresponding to the same tooth position. The above embodiments define that the boss and the retention accessory may be used in combination, the boss being used with the retention accessory to further enhance the retention effect.

Further, the protruding portion is provided with a reinforcing structure to strengthen the protruding portion, the reinforcing structure is a reinforcing ridge arranged on the cheek side face and/or the tongue side face of the protruding portion, the reinforcing ridge is formed by protruding outwards or recessing inwards the cheek side face and/or the tongue side face of the protruding portion, the protruding portion is of a hollow structure, and the reinforcing structure is a filling body arranged in the protruding portion. The above embodiments define the boss as having a different form of reinforcement structure, reducing the risk of the boss being bitten.

Further, the dental instrument has an elastic modulus of 1300MPa or less. The smaller modulus of elasticity may make the dental appliance softer, more resistant to breakage, further reducing the probability of appliance pull-out.

Further, in the dental instrument system, the plurality of groups of dental instruments further include third sections for covering missing teeth, the third sections being located between the first sections and the second sections, or on a distal side adjacent to the second sections, and the length of each third section decreasing as the corresponding correction step progresses.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings.

FIG. 1 is a schematic illustration of a dental appliance in a dental donning relationship according to one embodiment of the present application;

FIG. 2 is a schematic view of a dental instrument according to one embodiment of the present application;

FIG. 3 is another schematic view of a dental instrument according to one embodiment of the present application;

FIG. 4 is a schematic view of a dental instrument in an embodiment of the present application in a post-donned bite state;

FIG. 5 is a schematic illustration of another dental instrument according to one embodiment of the present application in a post-donned bite state;

FIG. 6 is a schematic illustration of another dental instrument according to one embodiment of the present application in a post-donned bite state;

FIG. 7 is a schematic illustration of another dental instrument according to an embodiment of the present application in a post-donned bite state;

FIG. 8 is a schematic view of a dental instrument according to another embodiment of the present application;

FIG. 9 is a schematic illustration of a dental instrument being worn in accordance with another embodiment of the present application;

FIG. 10 is a schematic illustration of another dental instrument being worn in accordance with an embodiment of the present application;

FIG. 11 is a flow chart of a method of designing a dental instrument according to another embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, as will be appreciated by those of ordinary skill in the art, in the various embodiments of the present application, numerous technical details have been set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not be construed as limiting the specific implementation of the present application, and the embodiments may be mutually combined and referred to without contradiction.

For the sake of simplicity of the drawing, the parts relevant to the present utility model are shown only schematically in the figures, which do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.

As known from the background art, when the orthodontic appliance according to the prior art scheme is used for orthodontic appliance, the problem that the orthodontic appliance is separated from teeth occurs, so that the orthodontic appliance is not completely exerted, and the orthodontic appliance expression rate is low. In this regard, the inventors of the present application conducted intensive studies on the appliance and the orthodontic procedure, and found in the studies that the appliance worn in the orthodontic procedure of the front teeth adduction applies force to the teeth by the appliance, corrects the teeth, and simultaneously, since there is a relationship between the acting force and the reaction force, there is a stripping force opposite to the correcting force, so that the appliance and the teeth are separated from each other, and if the stripping force is too large, a part of the appliance is not attached to the corresponding tooth position, even the appliance is separated. How to better solve the problem of the sleeve removal, the correction effect can be better improved, and the expression rate of the correction scheme can be improved.

To solve the above-mentioned problems, some embodiments of the present application provide a dental appliance for wearing on a dental jaw of a patient, including a first shell-like body capable of accommodating at least a portion of teeth of the patient, the first shell-like body being of unitary construction, the first shell-like body including: a first section, which is a plurality of tooth receiving cavities for receiving a first tooth set, for enabling sagittal distal movement of the first tooth set, the first tooth set belonging to anterior teeth; a second section for a plurality of tooth receiving cavities for receiving a second set of teeth, the teeth in the second set of teeth providing a sagittal anchorage for the teeth in the first set of teeth when moved distally; wherein a bulge is arranged between the second section and the jaw pair; the second section is subjected to a counter-stripping force resulting from contact of the projections with the opposing jaw to prevent separation of the second set of teeth from the second section while the upper and lower jaws are in the occluded state to assist in sagittal movement of the first set of teeth under the influence of the first section. By arranging the bulge parts on the teeth providing the anchorage force, when the occlusion state of the wearing process is realized, the appliance is pressed by the bulge parts, so that the trend of moving towards the anchorage teeth is generated, the problem that the anchorage teeth are easy to be out of the sleeve is avoided, and the expression rate of the correction scheme is improved. Meanwhile, when the tooth missing position or a larger gap exists, the rear teeth can be prevented from being inclined proximally.

The implementation details of the dental instrument described in the present application will be specifically described below in conjunction with specific embodiments, and the following description is provided only for ease of understanding and is not required to implement the present embodiments.

An embodiment of the present application provides a dental appliance, as shown in fig. 1-2, which includes a first shell-like body 20 for being worn on the mandible 10 of a patient, and for receiving all of the teeth of the mandible of the patient, the first shell-like body 20 being of unitary construction. The shell-shaped body can be a transparent dental appliance made of high polymer materials and can be made of single materials or multiple materials. In particular, the material may be arranged in one or more layers. For example, multiple layers of different materials or multiple layers of the same material may be used to form the appliance. Properties such as toughness, elasticity, hardness/softness, color, etc., of the materials used to form the appliance can be determined based at least in part on the material selected, the material shape, the material dimensions, the material layer, and/or the material thickness.

The present embodiment is described with reference to the first set of teeth 11 being anterior teeth (including bilateral central incisors and lateral incisors of the mandible), the second set of teeth 12 being first premolars, and the anterior teeth being moved sagittal distally. The first shell body 20 includes a first section 21 for receiving four teeth of the four front teeth for achieving front tooth retraction, in this embodiment a first front molar providing a sagittal distal movement for front tooth retraction, and the first shell body 20 includes a second section 22 for receiving one tooth of the first front molar. Specifically, in this embodiment, the first tooth set and the second tooth set directly have the missing tooth site 13, and the missing tooth may be a previous missing tooth or a tooth extracted to provide a space required for the adduction of the front tooth. In practical application, the missing teeth 13 can fill the gap by adopting a mode of setting attractive teeth, and the appliance part corresponding to the missing teeth is a teeth accommodating cavity 23 for accommodating the filled attractive teeth, so that the adjacent side incisors are prevented from toppling over. In practice, wax filling and remanufacturing of the dental model during the appliance manufacturing stage may also be employed, which is not shown here.

More specifically, the boss 31 is disposed on the first premolars in the second section 22 with the direction of the boss facing toward the jaw of the first premolars. When the dental appliance is worn by the patient, with the upper and lower jaws in the occluded state, the second section 22 is subjected to a counter-force resulting from the contact of the bosses 31 with the counter jaw which prevents separation of the first premolars from the second section 22 to assist in sagittal movement of the anterior teeth by the first section 21.

More specifically, in the present embodiment, when the front teeth are intended to move by 2mm or more in the orthodontic treatment, that is, when any one of the front teeth is retracted by 2mm or more, the protruding portion 31 is provided at the corresponding position. When the planned movement amount is large, the force of the removal of the sleeve is large, the possibility of the removal of the sleeve is high, and the boss 31 is required to be provided.

In the above description, taking the second section 22 to accommodate the first premolars as an example, in practical application, the second section 22 may accommodate a plurality of teeth, and when the teeth accommodated in the second section 22 include the first premolars, the tooth accommodating cavity corresponding to the first premolars is preferably selected as the setting position of the protruding portion 31.

Further, the protruding portion 31 may be disposed on the single-side first premolars, or may be disposed on the double-side first premolars, as shown in fig. 3, for example, the plan adduction is that the central incisors and the side incisors have four teeth, and the two-side cuspid teeth are all missing, the two-side first premolars may be used as the anchorage teeth, and the protruding portions 31 are disposed on the tooth accommodating cavities corresponding to the two-side first premolars, so that the two-side anchorage teeth may be protected simultaneously, the problem of the double-side anchorage teeth being unhooked may be avoided as much as possible, the double-side protruding portions may further enhance the anti-unhooking force, and when the teeth are engaged, if the protruding portions are disposed simultaneously, the left and right balance sense may be increased, and the stable anchorage force may be provided.

Continuing with the description, the height of the boss 31 in this embodiment may be selected to satisfy the following conditions: in the occlusion state of the upper and lower jaws, at least one tooth position of the posterior teeth area is separated and not contacted, as shown in fig. 4, in the occlusion state, the convex part 31 is contacted with the opposite jaw, and the position indicated by the arrow a of the posterior teeth area is separated and not contacted, so that the convex part can be kept in full contact with the opposite jaw. Meanwhile, in the occlusion state, the protruding portion is pressed against the jaw, and in practical application, the height of the protruding portion 31 protruding toward the jaw is less than or equal to 8mm, preferably less than or equal to 5mm, such as 1mm, 1.5mm, 2mm, etc., which are not listed here. The occlusion relationship of the upper jaw and the lower jaw can be prevented from being influenced when the dental appliance is worn, and the foreign body sensation when the user bites is reduced.

Continuing the description of the structure of the contact area of the convex portion 31 with the jaw, the area of the convex portion 31 near the jaw side satisfies: when the upper and lower jaws are in the occlusion state, the projection area of the contact surface of the protruding portion 31 and the opposite jaw plane is larger than a preset value, and the preset value is related to the projection area of the occlusion surface of the tooth position where the protruding portion 31 is located and the opposite jaw plane, for example, the preset value is 0.8-1.2 times of the projection area of the occlusion surface of the tooth position where the protruding portion 31 is located and the opposite jaw plane. The length of the convex part 31 in the mesial-distal direction is 0.8-1.2 times of the maximum length of the teeth of the set tooth position in the mesial-distal direction. The length of the bulge 31 in the buccal-lingual direction is 0.8-1.2 times the maximum length of the teeth of the set tooth position in the buccal-lingual direction. At the same time, the curvature of the face of the boss 31 near the opposite jaw side can be contoured to match its opposite jaw contact position. The protrusion engagement side area is set to realize wrap-around contact at the time of engagement, so that the contact is stable, and the pressure born by the protrusion 31 is dispersed.

Further, the protrusion 31 is located on the occlusal surface of the tooth receiving cavity of the second section 22 adjacent to the first section 21, and if the second section 22 includes a first premolars and a second premolars, the protrusion 31 is located on the tooth receiving cavity corresponding to the first premolars, in particular on the occlusal surface of the tooth receiving cavity.

To further explain the form of the protruding portion 31, in this embodiment, the protruding portion 31 may be formed by protruding the cavity structure in the second section 22 toward the jaw direction, and the protruding portion 31 may be hollow or solid. In other embodiments, the boss 31 may be formed using a spacer disposed at a desired position. In practical applications, other arrangements besides those mentioned above may be used, and are not listed here.

It should be noted that, in the present embodiment, the dental apparatus includes a first shell-shaped body 20 worn on the lower jaw 10 of the patient, and a second shell-shaped body 40 worn on the upper jaw of the patient, and the second shell-shaped body 40 may be a transparent shell-shaped dental appliance for correcting the upper jaw of the patient, and the structure thereof is not limited herein. It can be seen that in this embodiment the first shell body 20 and the second shell body 40 correspond to the upper and lower jaws of the same patient, respectively. In practical applications, the dental appliance may not be worn on the upper jaw of the patient, and the wearing of the first shell-shaped body 20 is not affected.

Further, the boss 31 is provided with a reinforcing structure to enhance the strength of the boss 31. As shown in fig. 5, the reinforcing structure in this embodiment is a reinforcing ridge 311 provided on the buccal side and/or lingual side of the above-mentioned boss 31, and the reinforcing ridge 311 is formed by the buccal side and/or lingual side of the above-mentioned boss being convex outward or concave inward. That is, the reinforcing ridge 311 on the boss 31 may be provided on both the lingual side and the buccal side, may be provided on only the lingual side (not shown in the drawings), or may be provided on only the buccal side. The reinforced ridge 311 may be concave-convex, and may be disposed along the long axis of the tooth, so as to increase the deformation resistance in the long axis direction and reduce the risk of the protrusion 31 being bitten.

It should be noted that, in practical application, the elastic modulus of the dental instrument in this embodiment is less than or equal to 1300MPa. When materials are selected, the smaller elastic modulus can enable the dental appliance to be softer and more fracture-resistant, and the unhairing probability of the appliance is further reduced.

It should be noted that, in practical applications, the dental instrument in this embodiment may be applied in a treatment plan of a patient including a central incisor and a lateral incisor on both sides of the mandible, where the first section is used to implement sagittal distal movement of the central incisor and the lateral incisor, the second section is used to accommodate a first premolars that provide a supporting force for the central incisor and the lateral incisor, and the protrusion is provided to assist the first premolars to be separated from the second section appliance as much as possible, so as to protect the supporting force provided by the first premolars from being accurately applied, and avoid failure of the correction plan caused by the first shell-shaped body being removed.

The dental instrument of this embodiment includes a first section 21 and a second section 22 for receiving a first set of teeth 11 to be moved sagittal and distal, and a second set of teeth 12 for providing a bearing force to the first set of teeth, respectively. The inventor finds that when the tooth is in front teeth, the tooth root of an adult is thicker, particularly the cuspid is difficult to be depressed, the depressed expression rate is lower, and the cuspid is easy to be unhooked at the middle-oriented tooth position, so that the problem that the anchorage tooth is easy to be unhooked is solved, the success rate of the front teeth adduction is higher, and the expression rate of an correcting scheme is improved due to the fact that the anti-unhooking force which is generated by the fact that the second tooth set is separated from the second section due to the fact that the bulge and the opposite jaw are contacted is provided by the correcting device when the occlusion state of the wearing process is realized.

Another embodiment of the present application also provides a dental appliance, which is substantially the same as the above embodiments, and the main difference is that in each of the above embodiments, the first tooth set 11 and the second tooth set 12 belong to the lower jaw 10, the first shell-shaped body 20 is worn on the lower jaw 10 of the patient, while in the present embodiment, the first tooth set 11 and the second tooth set 12 belong to the upper jaw, the first shell-shaped body 20 is worn on the upper jaw of the patient, and other arrangement positions and structures are similar, so that repetition is avoided.

A further embodiment of the present application provides a dental appliance, which is substantially the same as the above embodiments, and the main difference is that in each of the above embodiments, the first tooth set 11 and the second tooth set 12 belong to the mandible 10, the first shell body 20 is worn on the mandible 10 of the patient, the protruding part 31 is disposed at a specific position of the first shell body 20, that is, the protruding part 31 and the first shell body 20 correspond to the mandible 10, and the protruding part 31 and the first shell body 20 in this embodiment correspond to the upper jaw and the lower jaw of the same patient, respectively.

In particular, the projection 31 is located in the second section 22 in a jaw-facing position adjacent to the tooth receiving cavity of the first section 21. More specifically, as shown in fig. 6, the dental appliance in this embodiment further includes a second shell-shaped body 40, the second shell-shaped body 40 corresponds to the upper jaw of the patient, that is, the second shell-shaped body 40 is worn on the upper jaw of the patient, and the protruding portion 31 is formed by protruding the tooth receiving cavity of the second shell-shaped body 40 in the opposite jaw direction. In the occlusal action, the convex part 31 of the second shell-shaped body 40 worn on the upper jaw of the patient is in contact with the first shell-shaped body 20 worn on the lower jaw, and the convex part 31 applies force to the second section 22 of the first shell-shaped body 20, so that the second section 22 approaches the second tooth set, and the second section 22 is prevented from being separated from the second tooth set.

Because the upper and lower jaws are simultaneously corrected in the tooth correction process, the bulge 31 can be arranged on the occlusal surface of the jaw correction device, so that the arrangement position and form of the bulge 31 can be conveniently expanded, and the tooth correction device is beneficial to adapting to various application scenes.

In addition, in practical applications, the first tooth set 11 and the second tooth set 12 may also belong to the upper jaw, the second shell-shaped body 40 may be worn on the lower jaw of the patient, the protruding portion 31 may be disposed on the occlusal surface of the second shell-shaped body 40 worn on the lower jaw 10, and the disposition and the location of the protruding portion 31 are similar to those of the above embodiment, and will not be repeated herein.

A further embodiment of the present application provides a dental appliance, which is substantially the same as the previous embodiment, and the main difference is that in the previous embodiment, the protrusion 31 is disposed on the second shell-shaped body 40 worn on the upper jaw, and the second shell-shaped body 40 corresponds to the upper jaw and the lower jaw respectively with the first shell-shaped body 20. In the present embodiment, the protruding portion 31 is disposed on the tooth surface, that is, the protruding portion 31 is disposed on the occlusal surface of the teeth of the opposite jaw adjacent to the tooth receiving cavity of the first section in the second section 22, for example, the protruding portion 31 is bonded on the tooth surface, so that the protruding portion 31 is disposed and worn separately from the appliance, and the action of the protruding portion 31 on the opposite jaw is not affected by the taking-off of the appliance.

Further, the first tooth set 11 and the second tooth set 12 belong to the lower jaw 10, as shown in fig. 9, the protruding portion 31 may be disposed on the occlusal surface of the corresponding tooth of the upper jaw, on the other hand, the second shell-shaped body 40 worn on the upper jaw may be hollowed out at a position corresponding to the protruding portion 31, and when the second shell-shaped body 40 is worn, the protruding portion 31 passes through the hollowed-out position. In this embodiment, adjacent cuspids 13 are missing or extracted, and the gap position may be closed after the anterior adduction.

It should be noted that, in practical application, as shown in fig. 10, the position of the second shell-shaped body 40 corresponding to the protruding portion 31 may not be hollowed out, but a receiving cavity capable of receiving the protruding portion 31 is formed, and when the device is worn, the protruding portion 31 is wrapped by the receiving cavity.

Yet another embodiment of the present application also provides a dental appliance that is substantially identical to the embodiments described above, with the primary difference being the placement of a retention attachment on a tooth in the second set of teeth 12. The combined action of the retention attachment and the boss 31 further stabilizes the anchorage against tooth and prevents the appliance from being removed.

Specifically, as shown in fig. 7, the teeth of the second set of teeth 12 are provided with retention attachments 32, and the tooth receiving cavities of the second section 22 include sub-receiving cavities thereon for receiving the retention attachments. In some embodiments, the retention attachment 32 and the boss 31 are positioned to correspond to the same tooth position. For example, when the front teeth are retracted, the boss 31 is disposed on the first front molar, which is also provided with a retention attachment 32. The particular form of retention accessory 32 is not limited herein.

Yet another embodiment of the present application also provides a dental instrument, substantially identical to the embodiments described above, with the primary differences being: while the reinforcing ridge is used as the reinforcing structure of the boss 31 in the above-described embodiment, the filler built in the boss 31 is used as the reinforcing structure in the present embodiment.

Specifically, in this embodiment, the protruding portion 31 is a hollow structure, and the reinforcing structure may be a filler embedded in the protruding portion 31. More specifically, the shape of the filling body substantially conforms to the inner diameter of the boss 31. The method is simple and effective by adding the filler to the hollow structure to increase the strength of the boss 31.

More specifically, the filler is made of resin, in practical application, the filler and the dental instrument can be respectively guaranteed to be delivered to a user, and the user is guided to put the filler into the hollow part of the shell-shaped body before wearing the dental instrument, and then wearing the dental instrument, so that the dental instrument is convenient and practical.

It can be seen that the dental instrument of the present embodiment provides another implementation of the reinforcement structure, which enriches the implementation of the reinforcement structure on the boss 31 in practical applications, so as to be suitable for different application scenarios.

It should be noted that, in addition to the reinforced ridge in the first embodiment and the built-in filler in the present embodiment to increase the strength of the boss 31, the boss 31 may be made of a material having a greater elastic modulus, and the strength of the boss 31 may be enhanced by selecting materials having different elastic moduli. Similarly, in practical applications, a similar design may be used for the boss 31, which will not be described here.

It should be noted that, in addition to the above-mentioned embodiments, the various reinforcing structures may be used alone or in combination to adapt to different application scenarios and design requirements, which are not described herein.

Yet another embodiment of the present application also provides a dental appliance, substantially the same as the above embodiments, wherein the first set of teeth is all teeth including the anterior teeth area, including the central incisors, the lateral incisors, and the cuspids, and the total of six teeth, the second set of teeth is the first premolars providing support force to the anterior teeth, and the anterior teeth are intended to be moved sagittal distally, and the corresponding first section 21 is the six teeth receiving cavities for receiving the anterior teeth, and the second section 22 is the one teeth receiving cavity for receiving the first premolars, as shown in fig. 8. Meanwhile, in this embodiment, the position of the second premolars 32 is missing, and at this time, the protruding portions 31 are disposed at positions corresponding to the first premolars, and the shapes, positions, forms, etc. of the protruding portions are similar to those of the foregoing embodiments, and will not be described herein.

An embodiment of the present application provides a dental appliance system comprising a plurality of sets of dental appliances, at least one of the sets of dental appliances comprising a dental appliance as in any of the above examples.

In particular, the sets of dental appliances in this embodiment have a geometry that gradually repositions teeth from an initial position to a target orthodontic position. More specifically, the height of the projections 31 in the opposite jaw direction of the plurality of dental instruments is gradually reduced as the orthodontic treatment is changed. More specifically, taking the tooth correction by three correction stages as an example, each stage uses a different dental instrument to correct the tooth, for example, the dental instrument used in the second correction stage is a dental instrument used after the first correction stage, and the dental instrument used in the third correction stage is a dental instrument used after the second correction stage, and the three stages are different in that: the protruding height of the protruding part 31 arranged on the dental instrument used in the second correction stage towards the opposite jaw direction is smaller than that of the protruding part 31 arranged on the dental instrument used in the first correction stage towards the opposite jaw direction, and the protruding height of the protruding part 31 arranged on the dental instrument used in the third correction stage towards the opposite jaw direction is smaller than that of the protruding part 31 arranged on the dental instrument used in the second correction stage towards the opposite jaw direction. It is worth mentioning that in dental appliances, a patient is required to wear a series of shell-shaped dental appliances for the appliance, wherein the geometric rules of the series of shell-shaped dental appliances can be referred to the above examples. The wearing time of a pair of shell-shaped dental instruments is 7-14 days, and a series of shell-shaped dental instruments are arranged according to different case types and complexity of patients so as to achieve the correction effect.

It should be noted that, in the present embodiment, the height of the protrusions 31 disposed on the multiple groups of dental instruments in the opposite jaw direction gradually decreases along with the correction process, and in practical application, the height of the protrusions 31 disposed on the multiple groups of dental instruments in the opposite jaw direction may be defined to be consistent, or the heights of the protrusions 31 disposed on the multiple groups of partial dental instruments in the opposite jaw direction may be defined to be consistent, that is, the protrusions 31 on each dental instrument may not change along with the correction process, and the specific setting manner may be changed according to the actual needs, which is not listed herein.

In addition, the plurality of groups of dental instruments further comprise third sections for covering missing teeth, wherein the third sections are positioned between the first sections and the second sections or are adjacent to the distal sides of the second sections, and the length of each third section is reduced as the corresponding correction step progresses. In practical applications, the third section may be a section covering the missing tooth position, for example, when the cuspid is missing, the third section is a tooth accommodating cavity corresponding to the cuspid, for example, when the first premolars are extracted, the third section is a tooth accommodating cavity corresponding to the first premolars, and as the correction process changes, the length of the third section gradually decreases, and the gap of the corresponding missing tooth position also gradually decreases. The shape of the appliance is more in line with the actual shape of the teeth when the gap is gradually closed after the front teeth are adduced.

An embodiment of the present application provides a method for designing a dental instrument, as shown in fig. 11, specifically including:

and S1, acquiring an initial dental digital model.

Specifically, the teeth in the initial dental digital model include: a first set of teeth 11 in the appliance intended to undergo sagittal movement, and a second set of teeth 12 in the appliance intended to provide the teeth in the first set with a resistance to the sagittal movement.

It should be noted that, in some embodiments, the first tooth set 11 may include a plurality of teeth, wherein at least one tooth has a sagittal movement greater than or equal to 2mm.

Step S2, a model of the bulge 31 on the initial digital dental model, which is arranged between the second set of teeth 12 and the opposing jaw thereof, is obtained.

Specifically, the height of the protruding portion 31 toward the opposite jaw satisfies: the upper and lower jaws are in occlusion state, and at least one tooth position of the posterior teeth area is separated and not contacted.

The position of the protruding portion 31 corresponds to the tooth position of the second tooth set 12 adjacent to the first tooth set 11, or corresponds to the opposite jaw tooth of the second tooth set 12 adjacent to the tooth position of the first tooth set 11.

Step S3, generating a digital dental model with digitized projections 31 based on the initial digital dental model and the projections 31 model.

Specifically, in this embodiment, the first tooth set 11 may include a plurality of teeth in the front tooth area, and the second tooth set 12 includes a first premolars, and the corresponding protruding portion 31 is disposed at a position corresponding to the first premolars, that is, the protruding portion 31 is disposed on the occlusal surface of the tooth receiving cavity in the second section 22 for receiving the first premolars.

In practice, there may be two protrusions 31 of some embodiments, corresponding to the double sided first premolars, respectively.

Step S4, designing a shell dental implement comprising a first section 21 and a second section 22 based on the dental digital model with the digitized projections 31.

Specifically, the first section 21 is a plurality of teeth receiving cavities for receiving the first set of teeth 11 of the at least partial teeth, the second section 22 is a plurality of teeth receiving cavities for receiving the second set of teeth 12 of the at least partial teeth, and the second section 22 is subjected to a reverse-unhairing force generated by the contact of the protrusion 31 with the opposing jaw to prevent the second set of teeth 12 from being separated from the second section 22 when the upper jaw and the lower jaw are in the occlusal state, so as to assist the sagittal distal movement of the first set of teeth 11 by the first section 21.

It should be noted that, in the embodiments of the present application, various features of the dental apparatus may be set in the design method of the present embodiment, and in order to avoid repetition, no description is repeated here.

An embodiment of the present application provides a method for manufacturing a dental instrument, and in particular, a dental instrument designed by a method for designing a dental instrument according to the above embodiment may be manufactured by using a 3D direct printing method or a hot pressing method.

Specifically, the specific manufacturing process in this embodiment may be to print and manufacture the designed shell-shaped dental appliance digital model by using a 3D printing method. The mode is printed together in the printing stage, no extra working procedure is needed, the obtained dental instrument is obtained at one time, and the firmness of the obtained dental instrument is good. The additive manufacturing method in this embodiment may be SLA (photo curing) printing or DLP (digital light processing) printing, and other 3D printing techniques may be used in practical applications, which are not listed here.

In practical application, the dental instrument integrated structure can also be obtained by a hot-press film forming technology, and the specific hot-press film forming process approximately comprises the following steps: 3D printing is carried out on the basis of the corresponding digital dental model and a series of intermediate digital dental models, a solid dental model is manufactured, then a shell-shaped dental appliance containing tooth shapes is obtained in a mode that a diaphragm is formed on the solid dental model in a hot pressing mode, and then the shell-shaped dental appliance containing tooth shapes is cut along a gum line or adjacent to the gum line, so that the shell-shaped dental appliance capable of containing teeth is obtained.

It should be noted that, in each of the foregoing embodiments of the present application, the features of the dental apparatus may be set in the preparation method of the present embodiment, and in order to avoid repetition, no further description is provided herein.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific embodiments in which the present application is implemented and that various changes in form and details may be made therein without departing from the spirit and scope of the present application.

Claims (25)

1. A dental appliance for wearing on a dental jaw of a patient, comprising a first shell-like body adapted to receive at least a portion of a tooth of the patient, the first shell-like body being of unitary construction, the first shell-like body comprising:

a first section, which is a plurality of tooth receiving cavities for receiving a first tooth set, for enabling sagittal distal movement of the first tooth set, the first tooth set belonging to anterior teeth;

a second section for a plurality of tooth receiving cavities for receiving a second set of teeth, the teeth in the second set of teeth providing a sagittal anchorage for the teeth in the first set of teeth when moved distally;

wherein a bulge is arranged between the second section and the jaw pair; the second section is subjected to a counter-stripping force resulting from contact of the projections with the opposing jaw to prevent separation of the second set of teeth from the second section while the upper and lower jaws are in the occluded state to assist in sagittal movement of the first set of teeth under the influence of the first section.

2. The dental instrument of claim 1, wherein the height of the projections toward the opposing jaw satisfies: at least one tooth position of the posterior tooth area is separated and not contacted when the upper jaw and the lower jaw are in the occlusion state.

3. The dental instrument of claim 2, wherein the height of the projection toward the contra-jaw is less than or equal to 8mm.

4. The dental instrument of claim 1 or 2, wherein the area of the boss proximate the contra-jaw side satisfies: and when the upper jaw and the lower jaw are in a meshed state, the projection area of the convex part and the opposite jaw contact surface relative to the jaw plane is larger than a preset value, and the preset value is related to the projection area of the meshed surface of the tooth where the convex part is positioned relative to the jaw plane.

5. The dental instrument of claim 4, wherein the predetermined value is 0.8-1.2 times the projected area of the occlusal surface of the tooth at the tooth site where the boss is located relative to the jaw plane.

6. A dental instrument according to claim 1 or 2, wherein the protrusion has a mesial-distal length of 0.8-1.2 times the maximum mesial-distal length of the tooth of the set tooth position.

7. The dental appliance of claim 1 or 2, wherein the protrusion has a buccal-lingual lateral length that is 0.8-1.2 times the maximum buccal-lingual length of a tooth of the set tooth location.

8. The dental instrument of claim 1 or 2, wherein the protrusion is located on an occlusal surface of the tooth receiving cavity on the second section adjacent the first section.

9. The dental instrument of claim 8, wherein the protrusion is formed by a tooth receiving cavity within the second section protruding in a contra-jaw direction.

10. The dental instrument of claim 1 or 2, wherein the protrusion is located in the second section in a jaw-facing position of the tooth receiving cavity adjacent the first section.

11. The dental instrument of claim 10, further comprising a second shell-like body corresponding to the upper and lower jaws of the same patient, respectively, the projection being formed by a tooth receiving cavity of the second shell-like body projecting in a contra-jaw direction.

12. The dental instrument of claim 10, wherein the protrusion is provided on an occlusal surface of the teeth of the jaw adjacent the tooth receiving cavity of the first section in the second section.

13. The dental instrument of claim 12, further comprising a second shell-like body corresponding to the upper and lower jaws of the same patient, respectively, the second shell-like body being hollowed out at a location corresponding to the boss, the boss passing through the hollowed-out location when the second shell-like body is worn.

14. The dental instrument of claim 1, wherein the first set of teeth comprises a plurality of teeth in an anterior region, the second set of teeth comprises a first premolars, and the projections are disposed on an occlusal surface of a tooth receiving cavity in the second section that receives the first premolars.

15. The dental instrument of claim 14, wherein there are two of the bosses corresponding to the double sided first premolars, respectively.

16. The dental appliance of claim 1 or 2, wherein the sagittal distal movement of at least one tooth of the first set of teeth is greater than or equal to 2mm.

17. The dental appliance of claim 1 or 2, wherein the teeth of the second set of teeth have a retention attachment thereon, and the tooth receiving cavities of the second section include a sub-receiving cavity thereon for receiving the retention attachment.

18. The dental instrument of claim 17, wherein the retention attachment and the boss are disposed corresponding to the same tooth position.

19. A dental instrument according to claim 1 or 2, wherein the boss is provided with a reinforcing structure to enhance the strength of the boss.

20. The dental instrument of claim 19, wherein the reinforcement structure is a reinforcement ridge provided for the buccal and/or lingual side of the boss, the reinforcement ridge being formed by the buccal and/or lingual side of the boss being convex outwardly or concave inwardly.

21. The dental instrument of claim 19, wherein the boss is a hollow structure and the reinforcement structure is a filler built into the boss.

22. The dental instrument of claim 1 or 2, wherein the dental instrument has an elastic modulus of 1300MPa or less.

23. A dental appliance system comprising a plurality of sets of dental appliances, wherein at least one of the sets of dental appliances comprises the dental appliance of any one of claims 1-22.

24. The dental appliance system of claim 23, wherein the plurality of sets of dental appliances are provided with the bosses, the height of each boss protruding in the opposite jaw direction being constant or decreasing as the corresponding appliance step progresses.

25. The dental appliance system of claim 23, wherein the plurality of sets of dental appliances further comprise third sections for covering missing teeth, the third sections being located between the first section and the second section or distal to the second section, each third section decreasing in length as the corresponding appliance step progresses.