CN114795524A - Digital double-baffle corrector for mouth breathing with mandible retraction and manufacturing method - Google Patents

Abstract

The invention discloses a digital double-baffle corrector for mouth breathing with mandibular retraction and a manufacturing method thereof, belonging to the technical field of the corrector. According to the invention, the mandibular leading amount of the target position is accurately determined according to CBCT image data, and the upper jaw inclined plane magnetic type positioning nail and the mandibular inclined plane magnetic type positioning nail are symmetrically designed on the occlusion inclined plane, so that the problem of night dislocation of the functional orthosis is reduced, and the detachable breathing baffle can adjust the oral air input and promote nasal breathing. The double-resistance-plate straightener disclosed by the invention is more accurate to manufacture by utilizing a digital program, the manufacturing time of the straightener can be shortened, the rework rate of the straightener is effectively reduced, and benzene and dust pollution in the traditional process can be avoided. Meanwhile, the jaw model and jaw three-dimensional data of the patient can be utilized to carry out more reasonable step-by-step design and the manufacture of the staged corrector on the mandibular anterior vector, so that the comfort and the treatment safety of the patient are effectively improved, and the jaw three-dimensional data can be synchronously used for the auxiliary treatment of mouth respiration.

Description

Digital double-baffle corrector for mouth breathing with mandible retraction and manufacturing method

Technical Field

The invention belongs to the technical field of orthotics, and relates to a digital double-resistance-plate orthotics with mouth breathing and mandibular retraction and a manufacturing method thereof.

Background

The retromandibular retraction of children and teenagers is a common clinical dentofacial and maxillofacial deformity, which is often associated with mouth breathing. At present, the growth and development of the lower jaw are promoted mainly by manufacturing muscle function correcting devices such as activators, Twinblock and the like clinically, the face shape of a patient is improved, meanwhile, the relation among an upper airway, a tongue and a soft palate is corrected, the respiratory function of the patient is improved, and clinical symptoms are relieved. Clinically, the patient wearing the Twinblock can still freely speak by opening the mouth, so the clinical application is wider than that of an activator.

1) At present, the functional appliance is manufactured manually after a plaster dental model or a three-dimensional printing model is utilized, and the relative position relation between a mandible target position and a maxilla of a patient is recorded by dental wax. For example, the time and cost for casting and finishing the plaster model by using the plaster dental model method are high, and meanwhile, the plaster model cannot be recycled. Once the appliance is lost or damaged by a patient, the model needs to be re-taken, for example, a three-dimensional printing dental model is used, the material cost is high, a follow-up process of recording the occlusion relation between the mandible and the maxilla by using dental wax needs to be completed by cooperation of a specially trained technician and a doctor, and the problem of deformation and translocation of the wax model of the target occlusion relation exists. The manual bending of the steel wire and the preparation of the self-solidifying plastic substrate require a technician to have the possibility of benzene pollution, dust pollution and the like in the preparation process, and the labor cost and the time cost are high.

2) According to visual inspection and hand feeling of a clinician, the mandibular leading amount of a target position is guided to a position where the anterior teeth are bisection and left and right in the middle clinically at present, but specific anterior data of the mandible cannot be obtained, and the final anatomical position of the condyloid process is not clear, so that the risks of poor accuracy of the mandibular leading amount, insufficient mandibular leading amount or the fact that the condyloid process exceeds the anterior inclined plane of the temporomandibular joint exist.

3) Twinblock is two independent parts separating the upper jaw and the lower jaw, and the muscle of the patient is completely relaxed during sleep at night, so that the lower jaw is in a more backward position than the lower jaw in the daytime due to the action of gravity, and the target position of the lower jaw is changed.

4) Many patients with mandibular retrosystole can simultaneously close mouth breathing problems, the gradual closing of the oral airway after the upper airway obstructive disease is cured and the nasal breathing habit is reconstructed is one of effective methods for assisting the treatment of mandibular retrosystole mouth breathing, and patients who wear Twinblock at night can open mouth to further relieve the closure of the anterior dental area due to the complete closing of the oral airway, so that the mandibular position at the target position can rotate backwards and downwards, and the development of the facial form of mouth breathing is aggravated.

Disclosure of Invention

The invention aims to solve the problems of low correction accuracy and insufficient functions of an appliance in the prior art, and provides a digital double-baffle appliance with mouth breathing and mandibular retraction and a manufacturing method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:

the invention provides a digital double-baffle plate corrector with mouth breathing and mandible retraction, which comprises a maxillofacial and maxillofacial support palate base plate, a maxillofacial and buccal retaining plate, a mandible and maxillofacial and lingual support base plate, a mandible and buccal retaining plate, a maxillofacial and interlocking structure and a mandible and interlocking structure, wherein the maxillofacial and buccal retaining plates are arranged on the two sides of the mandible and occlusal and lingual support base plate;

the maxillary occlusal surface jaw support palatal base plate is positioned in occlusal surface areas of second premolars, first molars and second molars of the upper jaw at two sides, the maxillary buccal retention plate is positioned in occlusal surface areas of the second premolars, the first molars and the second molars of the upper jaw at two sides, the mandibular occlusal surface jaw support lingual base plate is positioned in occlusal surface areas of the first premolars and the second premolars of the lower jaw at two sides, and the mandibular buccal retention plate is positioned in the occlusal surface areas of the first premolars and the second premolars of the lower jaw at two sides; the upper jaw occlusal surface jaw support palate base plate is connected with the upper jaw buccal side retaining plate through the upper jaw interlocking structure, and the lower jaw occlusal surface jaw support tongue base plate is connected with the lower jaw buccal side retaining plate through the lower jaw interlocking structure;

the occlusion slope formed by the upper jaw occlusion face jaw support palatal base plate and the lower jaw occlusion face jaw support lingual base plate is symmetrically provided with an upper jaw slope magnetic type positioning nail and a lower jaw slope magnetic type positioning nail, and the opposite surfaces of the upper jaw slope magnetic type positioning nail and the lower jaw slope magnetic type positioning nail are opposite.

Preferably, a breathing baffle is arranged on the base plate on the lower jaw occlusal surface and the support tongue side.

Preferably, a breathing baffle hole nail passage is arranged on the breathing baffle.

Preferably, the number of the respiratory hole blocking nail key channels is 3, and 3 respiratory hole blocking nails are respectively arranged in the respiratory hole blocking nail key channels.

Preferably, an upper jaw expander is arranged at the palatal slit position of the upper jaw occlusal surface jaw palate base plate.

Preferably, the thickness of the maxillary occlusal surface jaw support palatal base plate is 2mm-3 mm;

the maxillary buccal retention plate is tightly attached to the maxillary second premolar, the first molar and the second molar crown and extends to the position 2mm below the cervical margin, and the maxillary buccal retention plate is 1mm thick.

Preferably, the thickness of the base plate on the lower jaw occlusal surface and jaw support tongue side is 2mm-3 mm;

the lower jaw buccal retention plate is closely attached to crowns of first premolar and second premolar of the lower jaw and extends to a position 2mm below a cervical margin, and the thickness of the lower jaw buccal retention plate is 1 mm.

Preferably, the upper jaw inclined magnetic type positioning nail and the lower jaw inclined magnetic type positioning nail are fixed on the occlusion inclined plane through threads.

Preferably, an occlusion inclined plane formed by the maxillary occlusal surface jaw support palatal base plate and the mandibular occlusal surface jaw support lingual base plate forms an angle of 45 degrees with the horizontal direction.

The invention provides a manufacturing method of a digital double-resistance-plate corrector with mouth breathing and mandibular retraction, which comprises the following steps:

an oral scanning instrument scans the maxillary dentition, the mandibular dentition and the occlusion relation of a patient, and an accurate digital dentition model is obtained through the processing of Geomagic Studio software;

obtaining a CBCT overlapping model of the upper jaw dentition and a CBCT overlapping model of the lower jaw dentition according to the CBCT and the accurate digital dentition model; moving a mandibular dentition CBCT overlapping model step by step according to the growth direction and growth rhythm of the mandible to form jaw position three-dimensional data of a digital dentition jawbone compound body after the virtual mandible is moved forward step by step;

designing the double-resistance-plate corrector according to the jaw position three-dimensional data of the digital dentition jaw bone complex after stepwise forward movement, and obtaining the materialized double-resistance-plate corrector by using a 3D printer.

Compared with the prior art, the invention has the following beneficial effects:

according to the digital double-resistance-plate corrector with mouth breathing and mandible retraction, provided by the invention, as the muscles of a patient are completely relaxed during sleep at night, the mandible is positioned at a more retracted position than that during the day due to the action of gravity, so that the mandible target position is changed. The invention installs the maxillary facial fixation plate on the maxillary second premolar, the first molar and the second molar in the dental crown facial area, a lower jaw buccal fixing plate is arranged in the area of the dental crown buccal surface of the first premolar and the second premolar at two sides, the maxillary occlusal surface jaw support palatal base plate with an inclined plane structure is arranged in the occlusal surface areas of the second maxillary premolar, the first molar and the second molar on the two sides, the first preceding molar of two side lower jaws, the regional installation of second preceding molar occlusal surface have the lower jaw occlusal surface jaw support tongue side base plate of syntropy inclined plane structure, can form the interlock inclined plane, and the symmetry is installed upper jaw inclined plane on the interlock inclined plane and is inhaled formula location nail and lower jaw inclined plane magnetism and inhale formula location nail, sets for upper jaw inclined plane magnetism and inhales formula location nail and lower jaw inclined plane magnetism and inhale formula location nail opposite face for the opposite sex, can improve the stability of wearing the lower jaw locate position of unscrambler night. The traditional functional appliance achieves the aim of correction by adjusting the position of the jaw bone and changing the distribution of muscle strength around the oral cavity.

Furthermore, a plurality of patients with mandible retraction can close mouth breathing simultaneously, the gradual closing of the oral airway after the upper airway obstructive disease is cured and the nasal breathing habit is reconstructed is one of effective methods for assisting the treatment of mouth breathing, and the patients who wear the double-baffle corrector at night can open mouth to further relieve the closing of the anterior dental area due to the complete closing of the oral airway, so that the mandible position of the target position is changed by rotating backwards and downwards, and the development of the face type of mouth breathing is aggravated. According to the invention, the detachable breathing baffle is arranged on the base plate on the side of the lower jaw occlusal surface jaw support tongue, and the breathing baffle is provided with the breathing baffle hole nail passage, so that the closed number of the breathing baffles when the appliance is worn at night can be adjusted according to the degree of nasal ventilation, and the nasal breathing capacity of a patient with oral breathing can be promoted.

Furthermore, the invention reserves the space of the upper jaw arch expander at the palatal slit position of the palatal base plate of the maxillofacial support, and can help to improve the problem of narrow upper jaw dental arch of the mouth breathing patient.

Further, the maxillary buccal retention plate of the corrector clings to maxillary second premolar, first molar and second molar crowns and extends to a position 2mm below the cervical margin, and the thickness of the maxillary buccal retention plate is 1 mm; the lower jaw buccal side retention plate is tightly attached to the crowns of the first premolar and the second premolar of the lower jaw and extends to a position 2mm below the cervical margin, and the thickness of the lower jaw buccal side retention plate is 1 mm; the extended portion enhances the retention effect.

Further, the formula location nail is inhaled to upper jaw inclined plane magnetism and formula location nail is inhaled to lower jaw inclined plane magnetism all through the threaded fixation on the interlock inclined plane, can inhale the formula location nail and inhale the formula location nail when the formula location nail is inhaled to lower jaw inclined plane magnetism in the dismantlement upper jaw inclined plane, and the lower jaw can freely separate when guaranteeing to wear daytime and not influence pronunciation.

Further, progressively seal oral cavity air passage and be one of the respiratory effective methods of adjunctie therapy mouth, it keeps off hole nail key way 11 to be favorable to carrying out better control to the not air output of degree mouth breathing patient to be equipped with 3 breaths, to serious mouth breathing, need keep off all dismantlements of hole nail with 3 breaths, to moderate mouth breathing, then need dismantle 2 and breathe and keep off the hole nail, and to mild mouth breathing patient, only need dismantle 1 and breathe and keep off the hole nail, and along with the improvement of mouth breathing, can adjust the closed number that breathes when wearing the unscrambler night according to the degree of nose breathing, adjust the oral cavity air input, promote mouth breathing patient's nose respiratory ability.

Further, the maxillary occlusal surface jaw support palatal base plate is connected with the maxillary buccal side fixing plate through the maxillary interlocking structure, the mandibular occlusal surface jaw support lingual base plate is connected with the mandibular buccal side fixing plate through the mandibular interlocking structure, and the design has stronger fixing force.

Furthermore, the invention considers the position relationship between the upper jaw corrector and the lower jaw corrector, the occlusion inclined plane formed by the maxillary occlusal surface jaw support palatal base plate and the mandibular occlusal surface jaw support lingual base plate forms an angle of 45 degrees with the horizontal direction, and the chewing force can be decomposed and converted into the force which is beneficial to the forward growth of the lower jaw through the contact inclined plane, so as to promote the growth of the lower jaw.

The manufacturing method of the digital double-baffle plate corrector with mouth breathing and mandible retraction provided by the invention is not manual manufacturing, but is based on the oral cavity digital model containing the suitable upper and lower jaw relation, so that the manufacturing process can be simplified, and the problems of benzene pollution, dust pollution, time consumption, manpower and the like in the manufacturing of the traditional functional corrector are solved, thereby effectively improving the manufacturing and correcting efficiency and being easy to popularize and apply.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Figure 1 is a side view of the orthosis of the present invention in place within the mouth.

Fig. 2 is a schematic view of the occlusal surface configuration of the appliance of the present invention in place within the mouth.

Figure 3 is a schematic view of the orthoses of the present invention in a frontal configuration with the orthoses in place within the mouth.

Fig. 4 shows a removable breathing barrier for use with the orthosis of the present invention.

Fig. 5 is a flow chart of a manufacturing process of the appliance of the present invention.

Wherein: 1-maxillary occlusal surface jaw support palate base plate; 2-maxillary buccal retention plate; 3-maxillary arch expander; 5-mandibular occlusal surface jaw support lingual base plate; 6-mandibular buccal fixation plate; 7-upper jaw inclined magnetic suction type positioning nail; 8-lower jaw inclined magnetic suction type positioning nail; 9-respiratory gear; 10-breathing hole blocking nail; 11-a breathing hole nail passage; 12-maxillary interlocking structure; 13-mandibular interlocking configuration.

Detailed Description

In order to make the objects, 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 with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually arranged when the product of the present invention is used, the description is merely for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, cannot be understood as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the term "horizontal", if present, does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The invention is described in further detail below with reference to the accompanying drawings:

the invention provides a digital double-baffle corrector for mouth breathing with mandibular retropulsion, which is shown in figures 1-4 and comprises: the upper jaw occlusal surface jaw holds in the palm palatal base plate 1, upper jaw buccal side retention plate 2, upper jaw expands bow ware 3, lower jaw occlusal surface jaw holds in the palm lingual side base plate 5, lower jaw buccal side retention plate 6, upper jaw inclined plane magnetism inhale formula location nail 7, lower jaw inclined plane magnetism inhale formula location nail 8, breathe and keep off 9, breathe and keep off hole nail 10, breathe and keep off hole nail lane 11, upper jaw interlocking structure 12 and lower jaw interlocking structure 13. The upper jaw interlocking structure 12 and the lower jaw interlocking structure 13 are formed by mutually embedding the occlusal surface jaw support and the buccal side retention plate.

As shown in fig. 2-4, the maxillary occlusal surface jaw support palatal base plate 1 with the inclined surface structure is positioned in occlusal surface areas of the second premolar, the first molar and the second molar on both sides, the maxillary expander 3 is arranged at a palatal central seam of the maxillary occlusal surface jaw support palatal base plate 1, the maxillary buccal retention plate 2 is positioned in dental crown buccal surface areas of the second premolar, the first molar and the second molar on both sides, the mandibular occlusal surface jaw support lingual base plate 5 with the inclined surface structure is positioned in occlusal surface areas of the first premolar and the second premolar on both sides, the mandibular occlusal surface jaw support lingual base plate 5 is provided with a detachable respiratory block 9, the respiratory block 9 is provided with respiratory block hole screw passages 11, the respiratory block hole screw passages 11 are provided with 3, and 3 respiratory block hole screws 10 are respectively arranged in the 3 respiratory block hole screw passages 11; the lower jaw facial side retention plate 6 is positioned in the dental crown facial area of the first and second anterior molar teeth of the two sides of the lower jaw; the maxillary occlusal surface jaw support palatal base plate 1 is connected with the maxillary buccal side retention plate 2 through a maxillary interlocking structure 12, and the mandibular occlusal surface jaw support lingual base plate 5 is connected with the mandibular buccal side retention plate 6 through a mandibular interlocking structure 13.

The upper jaw occlusal surface jaw holds in the palm the palatal base 1 and holds in the palm the interlock inclined plane that lingual base 5 formed on the lower jaw occlusal surface jaw symmetrically installs upper jaw inclined plane magnetism and inhales formula location nail 7 and lower jaw inclined plane magnetism and inhales formula location nail 8, upper jaw inclined plane magnetism is inhaled formula location nail 7 and lower jaw inclined plane magnetism and is inhaled formula location nail 8 opposite side for the opposite side, upper jaw occlusal surface jaw holds in the palm the interlock inclined plane that palatal base 1 and lower jaw occlusal surface jaw held in the lingual base 5 formed and is 45 jiaos with the horizontal direction (consider the position relation between upper jaw, the lower jaw unscrambler, the interlock inclined plane that upper jaw occlusal surface jaw held in the palatal base 1 and lower jaw occlusal surface jaw held in the lingual base 5 formed is 45 jiaos with the horizontal direction, through this contact inclined plane, can decompose the mastication power and turn into the strength that is favorable to lower jaw to grow forward, promote the growth of lower jaw. Wherein, the upper jaw inclined plane magnetism is inhaled formula location nail 7 and lower jaw inclined plane magnetism is inhaled formula location nail 8 and is all fixed on the interlock inclined plane through the screw thread.

Preferentially, the thickness of the maxillary occlusal surface jaw support palatal base plate 1 is 2mm-3 mm; the maxillary buccal retention plate 2 is tightly attached to the maxillary second premolar, the first molar and the second molar crown and extends to the position 2mm below the cervical margin, and the thickness of the maxillary buccal retention plate 2 is 1 mm; the thickness of the base plate 5 at the lower jaw occlusal surface and the support tongue side is 2mm-3 mm; the lower jaw buccal side retention plate 6 is tightly attached to the crowns of the first premolar and the second premolar of the lower jaw and extends to the position 2mm below the cervical margin, the thickness of the lower jaw buccal side retention plate 6 is 1mm, and the extension part enhances the retention effect.

The invention provides a method for manufacturing a digital double-baffle corrector (TWINBLOCK corrector) for mouth breathing with mandible retraction, which comprises the following steps:

the oral scanning instrument scans the maxillary dentition, the mandibular dentition and the occlusion relation of a patient, and an accurate digital dentition model is obtained through the processing of Geomagic student software;

obtaining a CBCT overlapping model of the upper jaw dentition and a CBCT overlapping model of the lower jaw dentition according to the CBCT and the accurate digital dentition model; moving a mandibular dentition CBCT overlapping model step by step according to the growth direction and growth rhythm of the mandible to form jaw position three-dimensional data of a digital dentition jawbone compound body after the virtual mandible is moved forward step by step;

designing the double-resistance-plate corrector according to the jaw position three-dimensional data of the digital dentition jaw bone complex after stepwise forward movement, and obtaining the materialized double-resistance-plate corrector by using a 3D printer.

As shown in fig. 5, the specific steps are as follows:

the acquisition of experimental data comprises the following equipment:

1) a 3Shape desktop scanner (3Shape R900, Copenhagen, Denmark) or itero oral scanner;

2) a mobile workstation (think of ThinkPad, P53, i7-9750H, 16G running memory, 512G solid state disk);

3) dolphin software;

4)3D printers (Eden 260V, Objet geometry).

The method comprises the following steps: acquisition of three-dimensional images

1) The CBCT is recorded into the optical disc in a DICOM format and is led into dolphin software;

2) acquiring a digital dentition model;

3 scanning the upper and lower jaw dentitions by a Shape desk type scanner or an itero oral scanning instrument to obtain an upper jaw dentition model and a lower jaw dentition model, then scanning the occlusion relation according to the occlusion relation of the upper and lower jaws, and finally fitting the upper jaw dentition model and the lower jaw dentition model with the finally scanned occlusion relation to complete the preparation of a preliminary digital dentition model and save preliminary digital upper and lower jaw data in an STL format.

And (3) importing the initial digital upper and lower jaw data in the STL format into Geomagic Studio software, cutting the buccal side to the vestibular sulcus bottom by using a selection function, removing the part except the anatomical form generated by mouth scanning, and obtaining an accurate digital dentition model comprising a maxillary dentition model, a mandibular dentition model, a mucous membrane on the lip (buccal) side, a mucous membrane on the palate side and a maxillary palatal top.

3) Fitting the CBCT and the accurate digital dentition model on dolphin software to obtain a CBCT overlapping model of the maxillary dentition and a CBCT overlapping model of the mandibular dentition;

the method comprises the following main steps of utilizing dolphin software to carry out three-dimensional reconstruction:

a) and introducing CBCT scanning data of a patient in a DICOM format, and acquiring four views by introducing a rear dolphin software according to 6 directions of up, down, front, back, left and right: a three-dimensional CBCT model of the horizontal plane section, the sagittal plane section, the coronal plane section, and the subsurface 1/3 range. And (3) carrying out surface calibration on the CT image, determining after repeatedly comparing the numerical values of the surface calibration, and clearly displaying the tooth root, the dental crown and the jaw bone and simultaneously not displaying soft tissues after the surface calibration.

b) And after surface calibration, introducing an upper jaw dentition model, overlapping according to a best fit alignment function, checking the overlapping of the CBCT and the upper jaw dentition model one by one in the three directions of a horizontal plane, a sagittal plane and a coronal plane, performing micro adjustment by using translation and rotation in a manual registration function, and obtaining the upper jaw dentition CBCT overlapping model, wherein the buccal side, the lingual side and the occlusal surface of the dental crown are well overlapped on the horizontal plane, the sagittal plane and the coronal plane.

And after the overlapped CBCT surfaces are calibrated, deriving the overlapped CBCT surfaces in an STL format, and deriving and cutting the mandibular dentition model in the STL format to obtain the mandibular dentition CBCT overlapped model. And (5) carrying out deviation analysis on the two types of incised dentitions in dolphin software. Dentition indicates errors within 0.16mm, indicating that CBCT overlaps well with dentition.

Step two: forming jaw position three-dimensional data of digital dentition jaw complex after virtual mandibular advancement

On dolphin software, according to the growth direction and growth rhythm of mandible, the whole mandible dentition CBCT overlapped model is moved forward step by step: the central point of incisors in the terminal mandible is designed to be 2-4mm forward and 2-4mm downward, the incisor end of the anterior teeth is vertically distant by 2-3mm, and meanwhile, bilateral condyles are ensured to be in the temporomandibular joint fossa.

Step three: designing a double-resistance-plate corrector according to jaw position three-dimensional data of a digital dentition jaw bone complex after stepwise forward movement

Opening dolphin software, and designing the double-resistance-plate corrector:

design of the upper jaw part of the double-resistance plate appliance: the bilateral maxillary second premolar, the first molar and the second molar occlusal surface jaw support and the full dentition palatal side mucosa comprise a palatal top base plate (a space of a maxillary arch expander is reserved at a position corresponding to a palatal central slit canine tooth) + the bilateral maxillary second premolar, the first molar and the second molar tooth crown buccal surface area buccal side fixing plate.

The upper jaw and lower jaw occlusal surface jaw support and the buccal side fixing plate are designed into an interlocking structure.

The dental implant comprises first and second anterior molar on two sides of a mandible, an occlusal surface jaw support of the second anterior molar, a full dentition lingual side mucosa substrate, a first anterior molar on two sides of the mandible, a dental crown buccal area buccal side retention plate of the second anterior molar.

The upper and lower jaws are inclined magnetic-attracting type positioning nails.

Step four: printing three-dimensional double-resistance-plate corrector

The dual-resistance plate aligner file was output in STL format, and the digitized dual-resistance plate aligner was materialized using a 3D printer (Eden 260V, Objet geometry).

The traditional functional appliance is manufactured by hand, a skilled technician can finish the manufacture generally within about 3 hours after the operations of pouring a model, bending a steel wire, coating plastic by self-gel, benzene pollution and dust, the labor and time cost is high, and the harm to an operator can be caused. In the traditional manufacturing method, when the appliance is manufactured, the plaster model is destroyed and cannot be reused. If the appliance is lost or damaged by the patient and needs to be re-made, the entire manufacturing process must be repeated again, increasing the patient's discomfort, the number of visits, the time spent by the physician and technician, and the inefficiency. In addition, the traditional functional appliance achieves the purpose of correction by adjusting the position of the jaw bone and changing the distribution of muscle strength around the oral cavity, the effect of promoting the growth of the jaw bone is not enhanced by introducing magnetic force, and the efficiency also has an improved space. Compared with the traditional functional appliance, the correction method of the appliance provided by the invention comprises the following steps: the appliance disclosed by the invention is not manually manufactured in the manufacturing method, but is manufactured by using a computer-assisted rapid prototyping technology and procedures based on an oral cavity digital model containing a suitable upper and lower jaw relation, so that the manufacturing procedures can be simplified, the problems of benzene pollution, dust pollution, time consumption, manpower and the like in the manufacturing of the traditional functional appliance are solved, the data of a patient can be stored, and the appliance is more convenient and faster when being repeatedly manufactured, thereby effectively improving the manufacturing and correcting efficiency and being easy to popularize and apply.

The invention provides a digitized double-resistance-plate corrector with mouth breathing and mandibular retraction and a manufacturing method thereof, wherein the traditional manual operation is replaced by a digitization technology. Oral health workers substantiate objects of complex morphology directly, especially when the structure of the fabricated object is unique, needs to be customized, has a complex morphology, and is relatively accessible for three-dimensional data. The device can assist the stomatologist to make the appliance with stable quality more quickly and with low cost, and can also assist the clinician and the patient to finish clinical wearing more accurately. The stability of the lower jaw positioning position of the corrector worn at night is improved by designing the detachable magnetic type positioning nail on the inclined surface of the upper jaw and the lower jaw, and meanwhile, the upper jaw and the lower jaw can be freely separated without influencing pronunciation when the corrector is worn in the daytime; the detachable breathing baffle is designed on the mandibular occlusal surface jaw support and the tongue side base plate, the closed number of the breathing baffle when the corrector is worn at night can be adjusted according to the degree of nasal ventilation, and the nasal breathing capacity of the mouth breathing patient is promoted.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A digital double-baffle plate appliance with mouth breathing and mandible retraction is characterized by comprising a maxillofacial jaw support palate base plate (1), a maxillofacial buccal side fixing plate (2), a mandible occlusal facial jaw support tongue side base plate (5), a mandible buccal side fixing plate (6), a maxillofacial interlocking structure (12) and a mandible interlocking structure (13);

the maxillary occlusal surface jaw support palatal base plate (1) is positioned in occlusal surface areas of second premolars, first molars and second molars of the two upper jaws, the maxillary buccal retention plate (2) is positioned in occlusal surface areas of the second premolars, the first molars and the second molars of the two upper jaws, the mandibular occlusal surface jaw support lingual base plate (5) is positioned in occlusal surface areas of the first premolars and the second premolars of the two lower jaws, and the mandibular buccal retention plate (6) is positioned in the occlusal surface areas of the first premolars and the second premolars of the two lower jaws; the maxillary occlusal surface jaw support palatal base plate (1) is connected with the maxillary buccal side retention plate (2) through the maxillary interlocking structure (12), and the mandibular occlusal surface jaw support lingual base plate (5) is connected with the mandibular buccal side retention plate (6) through the mandibular interlocking structure (13);

the occlusion slope formed by the upper jaw occlusal surface jaw support palatal base plate (1) and the lower jaw occlusal surface jaw support lingual base plate (5) is symmetrically provided with an upper jaw slope magnetic type positioning nail (7) and a lower jaw slope magnetic type positioning nail (8), and the opposite surfaces of the upper jaw slope magnetic type positioning nail (7) and the lower jaw slope magnetic type positioning nail (8) are opposite.

2. The digital double baffle orthosis of mouth breathing with mandibular retraction according to claim 1, wherein a breathing stop (9) is provided on the mandibular occlusal maxillofacial bracket lingual base plate (5).

3. The digital double baffle orthosis of mouth breathing with mandibular retraction according to claim 2, characterized in that the breathing baffle (9) is provided with a breathing baffle hole peg channel (11).

4. The digital double baffle orthosis according to claim 3, characterized in that there are 3 respiratory stop pin channels (11), and 3 respiratory stop pins (10) are respectively provided in 3 respiratory stop pin channels (11).

5. The digital double-baffle appliance with mouth breathing and mandible retraction according to claim 1, characterized in that a maxillary arch expander (3) is arranged at the palatal slit position of the maxillary occlusal maxillomandibular palatal base plate (1).

6. The digital double baffle corrector with mouth breathing and mandibular retropulsion according to claim 1, characterized in that the maxillary occlusal palatal base plate (1) has a thickness of 2-3 mm;

the maxillary buccal retention plate (2) is tightly attached to maxillary second premolar, the first molar and the second molar crown and extends to the position 2mm below the cervical margin, and the thickness of the maxillary buccal retention plate (2) is 1 mm.

7. The digital double baffle appliance of mouth breathing with mandibular recession according to claim 1, wherein the mandibular occlusal base (5) is 2mm to 3mm thick;

the lower jaw buccal fixation plate (6) is tightly attached to crowns of a first premolar and a second premolar of the lower jaw and extends to a position 2mm below a cervical margin, and the thickness of the lower jaw buccal fixation plate (6) is 1 mm.

8. The digital double block plate appliance with mouth breathing and mandible retraction according to claim 1, characterized in that the upper jaw inclined magnetic type positioning nail (7) and the lower jaw inclined magnetic type positioning nail (8) are fixed on the occlusion inclined plane through screw threads.

9. The digital double baffle corrector with mouth breathing and mandibular retropulsion according to claim 1, wherein the occlusal slope formed by the maxillary occlusal splint base (1) and the mandibular occlusal splint base (5) is at an angle of 45 ° to the horizontal.

10. The method for manufacturing the digital double-baffle plate appliance with mouth breathing and mandible retraction according to any one of claims 1 to 9 is characterized by comprising the following steps:

the oral scanning instrument scans the maxillary dentition, the mandibular dentition and the occlusion relation of a patient, and an accurate digital dentition model is obtained through the processing of Geomagic student software;

obtaining a CBCT overlapping model of the upper jaw dentition and a CBCT overlapping model of the lower jaw dentition according to the CBCT and the accurate digital dentition model; moving a mandibular dentition CBCT overlapping model step by step according to the growth direction and growth rhythm of the mandible to form jaw position three-dimensional data of a digital dentition jawbone compound body after the virtual mandible is moved forward step by step;

designing the double-resistance-plate corrector according to the jaw position three-dimensional data of the digital dentition jaw bone complex after stepwise forward movement, and obtaining the materialized double-resistance-plate corrector by using a 3D printer.

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