Occlusion-stable temporomandibular joint disorder therapeutic jaw plate and preparation method thereof

Abstract

The invention discloses an occlusal stable temporomandibular joint disorder therapeutic jaw plate and a preparation method thereof, and belongs to the technical field of dental restoration. The preparation method comprises the following steps: acquiring the upper and lower jaw position relation of a joint hinge shaft of a patient, and transferring to a jaw frame; the method comprises the following steps: importing a jaw frame and an occlusion relationship into computer software, designing an occlusion plate worn on an upper jaw dentition, and performing parameter adjustment: adjusting the occlusion height until a rear tooth tip is separated from contact by 1-3mm, only one buccal tooth tip of each of two premolars in the left lower and right lower back tooth areas and the first and second molars is in contact with the biteplate, and canine teeth and lower anterior teeth are in contact with the biteplate; and 3D printing is conducted according to the adjusted parameters of the biteplate, and the biteplate is manufactured. According to the manufacturing method, accurate and rapid manufacturing of the occlusal stable temporomandibular joint disorder treatment jaw plate can be achieved, and through combination of the semi-adjustable jaw frame and digital design, the treatment success rate can be remarkably increased, the pain of a patient can be relieved, and the life quality can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of tooth restoration, and in particular to a occlusal stable temporomandibular joint disorder therapeutic jaw plate and a preparation method thereof. Background Art

[0002] Temporomandibular Joint Disorder (TMD) is a common oral and maxillofacial disease that has long troubled countless patients. Its symptoms are diverse, including joint pain, clicking, and limited mouth opening, which not only affect the patient's basic physiological functions such as chewing and swallowing, but are also often accompanied by secondary pain such as headaches and earaches, greatly reducing the patient's quality of life. In the face of this challenge, more accurate and efficient treatment methods are constantly being explored clinically. A bite plate for the treatment of temporomandibular joint disorder based on a fully adjustable jaw frame and digital design is a new exploration of the clinical treatment of joint disorders.

[0003] Traditional bite splints for treating temporomandibular joint disorders mostly rely on doctors to operate and adjust them directly in the patient's mouth. Although this method can relieve symptoms to a certain extent, it is limited by human factors and often difficult to accurately capture and stabilize the patient's optimal joint position. In addition, handmade bite splints also have certain limitations in the control of technical parameters, making it difficult to ensure that each patient can receive the most personalized treatment plan. Summary of the invention

[0004] In order to solve the above-mentioned technical problems, the purpose of the present invention is to provide an occlusal stable temporomandibular joint disorder therapeutic jaw plate and a preparation method thereof, so as to solve the problem that the existing traditional occlusal plates for treating temporomandibular joint disorders are difficult to accurately capture and stabilize the patient's optimal joint position, and there are limitations in the control of preparation parameters, making it difficult to ensure that each patient can obtain the most personalized treatment plan.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] A method for preparing a therapeutic jaw plate for occlusal stabilization of temporomandibular joint disorders comprises the following steps:

[0007] (1) Obtain the upper and lower jaw position relationship of the patient's joint hinge axis and transfer it to the jaw frame;

[0008] (2) The jaw frame and occlusal relationship were imported into the computer software, and the bite plate worn on the maxillary dentition was designed and the parameters were adjusted. The parameter adjustments included: the bite height was adjusted to open until the posterior cusps were out of contact by 1-3 mm, and only one buccal cusp of each of the two premolars and the first and second molars in the lower left and right posterior tooth areas was in contact with the bite plate, and the canines and lower front teeth were in contact with the bite plate;

[0009] (3) The occlusal plate is manufactured by 3D printing according to the adjusted parameters.

[0010] The beneficial effects of the present invention are as follows: by introducing a semi-adjustable jaw frame, the present invention can simulate and adjust the position relationship of the patient's upper and lower jaws in vitro, thereby more accurately reflecting the stable position of the joints, greatly improving the pertinence and effectiveness of treatment; by utilizing advanced digital design and processing technology, it can achieve precise control of the bite plate parameters, ensuring that the bite plate can more accurately reflect the patient's ideal joint and bite position, further improving the treatment effect.

[0011] Furthermore, the patient wears a muscle relaxant for 1-3 hours before obtaining the upper and lower jaw position relationship of the patient's joint hinge axis in step (1).

[0012] Preferably, the patient wears a muscle relaxant for 2 hours before obtaining the position relationship between the upper and lower jaws of the patient's joint hinge axis in step (1).

[0013] The beneficial effect of adopting the above further technical solution is: by wearing a muscle relaxant, the patient's masticatory muscles can be deprogrammed, so that the upper and lower jaw position relationship of the patient's joint hinge axis can be obtained more accurately later.

[0014] Furthermore, in step (2), the contact between all teeth and the bite plate is point contact.

[0015] Furthermore, the parameter adjustment in step (2) also includes: adjusting the premolar-molar contact point to be 3-5 mm away from the buccal-lingual edge of the bite plate; the canine and lower front teeth contact point is located on a horizontal platform and is 1-2 mm away from the protrusive and lateral movement guiding inclined planes.

[0016] Preferably, the parameter adjustment in step (2) also includes: adjusting the premolar-molar contact point to be 4 mm away from the buccal-lingual edge of the bite plate; the canine and lower front teeth contact point is located on a horizontal platform and is 1.5 mm away from the protrusive and lateral movement guiding inclined planes.

[0017] Furthermore, the canine lateral movement guiding inclined surface is 10-20 mm long and has an inclination angle of 50-70 degrees.

[0018] Preferably, the canine lateral movement guiding slope is 15 mm long and has an inclination angle of 60 degrees.

[0019] Furthermore, the anterior teeth protrusive movement guiding inclined surface is 5-15 mm long and has an inclination angle of 40-50 degrees.

[0020] Preferably, the anterior teeth protrusive movement guiding inclined surface is 10 mm long and has an inclination angle of 45 degrees.

[0021] The beneficial effect of adopting the above-mentioned further technical solution is that the present invention makes precise requirements and controls on the occlusal positions of all teeth as well as the angles and contact positions during dynamic occlusion, which is not only conducive to stabilizing the occlusion, but also can promote self-repair and repositioning of the joints during the treatment process.

[0022] A occlusal stable temporomandibular joint disorder therapeutic jaw plate is prepared by adopting the preparation method.

[0023] The present invention has the following beneficial effects:

[0024] The present invention provides a method for digitally designing and manufacturing an occlusal stable therapeutic jaw plate for temporomandibular joint disorders, which can achieve accurate and rapid manufacturing of an occlusal stable therapeutic jaw plate for temporomandibular joint disorders, and provide a more accurate, efficient and personalized treatment plan for patients with temporomandibular joint disorders. Through the combination of a semi-adjustable jaw frame and digital design, the treatment success rate can be significantly improved, the patient's pain can be alleviated, and the quality of life can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of wearing a muscle relaxant in step (1) of Example 1;

[0026] Figure 2 A schematic diagram of the maxillary jaw position transfer in step (2) of Example 1;

[0027] Figure 3 Schematic diagram of the position relationship of the hinge axis of the transfer joint in step (3) of Example 1;

[0028] Figure 4 A schematic diagram of digitally scanning the maxillary frame in step (4) of Example 1;

[0029] Figure 5 Schematic diagram of the jaw plate and occlusal contact points designed in step (4) of Example 1;

[0030] Figure 6 Schematic diagram of the dynamic occlusal design of the jaw plate in step (4) of Example 1;

[0031] Figure 7 The occlusal stable temporomandibular joint disorder therapeutic jaw plate designed by 3D printing in step (5) of Example 1;

[0032] Figure 8 This is a picture of the traditional jaw pad. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples are only used to explain the present invention and are not used to limit the scope of the present invention. If specific conditions are not specified in the embodiments, they are carried out according to normal conditions or conditions recommended by the manufacturer. If the manufacturer is not specified for the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0034] Embodiment 1:

[0035] A method for preparing a therapeutic jaw plate for occlusal stabilization of temporomandibular joint disorders comprises the following steps:

[0036] (1) The patient is given a muscle relaxant for 2 hours to deprogram the patient's masticatory muscles. Figure 1 As shown, so that the position relationship between the upper and lower jaws of the patient's joint hinge axis can be accurately obtained in the next step.

[0037] (2) Use the face bow, jaw fork and universal joint to transfer the position of the patient's upper jaw relative to the temporomandibular joint to the jaw frame, such as Figure 2 shown.

[0038] (3) Use wax blocks and bite registration silicone rubber to obtain the positional relationship between the upper and lower jaws of the hinge axis at different vertical distances of the patient, such as Figure 3 As shown, its repeatability on the same arc is used to verify whether the position relationship of the hinge axis is correctly transferred to the jaw frame to obtain the adjusted jaw frame.

[0039] (4) Digital scanning of the maxillary frame, such as Figure 4 As shown, the digital scan results and occlusal relationship are imported into the computer software to design the occlusal plate worn on the maxillary dentition, as shown in Figure 5 As shown in the figure, adjust the height of the bite plate and open it until the posterior tooth cusps are out of contact by 2mm. The two premolars and the first and second molars in the lower left and right posterior tooth areas have only one buccal cusp in contact with the bite plate, and the canines and lower front teeth are in contact with the bite plate. The contact points between all the above teeth and the bite plate are point contacts; the contact point of the premolar is 4mm away from the buccal and lingual edge of the bite plate, the contact point of the cusp and the lower front teeth is on the horizontal platform, and is 1.5mm away from the protrusion and lateral movement guiding slopes, of which the canine lateral movement guiding slope is 15mm long and has an inclination angle of 60 degrees, and the protrusion movement guiding slope of the front teeth is 10mm long and has an inclination angle of 45 degrees. Figure 6 As shown, the design of the bite plate is completed.

[0040] (5) Using a 3D printing method, the occlusal plate designed in step (4) is used as a template to produce an occlusal stable temporomandibular joint disorder therapeutic jaw plate, such as Figure 7 shown.

[0041] The method for preparing the occlusal stable temporomandibular joint disorder therapeutic jaw plate for clinical use comprises the following steps:

[0042] 1. The patient tries on the prepared occlusal stable temporomandibular joint disorder therapeutic jaw plate to check its positioning and fixation;

[0043] 2. Use articulating paper to check the occlusion between the jaw plate and the lower dentition to ensure that each tooth has only one point contact with the jaw plate;

[0044] 3. Use metal bite paper (thickness of 12 μm), check and adjust each occlusal contact point, ensure that the posterior teeth (premolars and molars) are in heavy occlusion (the bite paper cannot pass through the occlusal contact point after clenching the teeth), and the anterior teeth (canines and lower front teeth) are in light occlusion (the bite paper can pass through the occlusal contact point with resistance after clenching the teeth);

[0045] 4. Use thin articulating paper (thickness 200 μm) to check the protrusive and lateral occlusion. It is required that the protrusive movement is guided only by the two lower anterior teeth, and the other teeth immediately break away from the occlusal contact when the movement begins. The lateral movement is guided only by the canine on the moving side, and the other teeth immediately break away from the occlusal contact when the movement begins.

[0046] 5. After the occlusal adjustment is completed, the patient should wear the glasses for 24 hours a day (except when eating and brushing teeth), and return for a follow-up visit two weeks later. During the follow-up visit, the occlusal relationship should be further checked and adjusted using the same method as before.

[0047] The morphology of traditional jaw pads is shown in the figure Figure 8 As shown, the traditional jaw pad has poor material strength and is easy to break; the occlusal contact in the posterior teeth area is not accurate, and the patient's target treatment occlusal position cannot be accurately located; there is no protruding occlusal guide for the anterior teeth; there is no lateral occlusal guide for the canines on both sides; without the participation of advanced CAMCAD technology, the jaw pad is purely handmade with poor precision and long operation time. However, the present invention combines digital design with 3D printing to first accurately obtain the position relationship of the patient's maxilla relative to the temporomandibular joint, then uses digital technology to calibrate the occlusal position, design the protruding occlusal guide for the anterior teeth and the lateral occlusal guide for the canines on both sides, and finally forms it through 3D printing technology, effectively solving the problems of inaccurate occlusal position, lack of occlusal guide for the anterior teeth and canines, poor manufacturing precision, long operation time, etc. of the traditional jaw pad, and has economic value and practical value.

[0048] Embodiment 2:

[0049] A method for preparing a therapeutic jaw plate for occlusal stabilization of temporomandibular joint disorders comprises the following steps:

[0050] (1) The patient is given a muscle relaxant for 1 hour to deprogram the patient's masticatory muscles. Figure 1 As shown, so that the position relationship between the upper and lower jaws of the patient's joint hinge axis can be accurately obtained in the next step.

[0051] (2) Use the face bow, jaw fork and universal joint to transfer the position of the patient's upper jaw relative to the temporomandibular joint to the jaw frame, such as Figure 2 shown.

[0052] (3) Use wax blocks and bite registration silicone rubber to obtain the positional relationship between the upper and lower jaws of the hinge axis at different vertical distances of the patient, such as Figure 3 As shown, its repeatability on the same arc is used to verify whether the position relationship of the hinge axis is correctly transferred to the jaw frame to obtain the adjusted jaw frame.

[0053] (4) Digital scanning of the maxillary frame, such as Figure 4 As shown, the digital scan results and occlusal relationship are imported into the computer software to design the occlusal plate worn on the maxillary dentition, as shown in Figure 5 As shown in the figure, adjust the height of the bite plate and open it until the posterior tooth cusps are out of contact by 1mm. The two premolars and the first and second molars in the lower left and right posterior tooth areas have only one buccal cusp in contact with the bite plate, and the canines and lower front teeth are in contact with the bite plate. The contact points between all the above teeth and the bite plate are point contacts; the contact point of the premolar is 3mm away from the buccal and lingual edge of the bite plate, the contact point of the cusp and the lower front teeth is on the horizontal platform, and is 1mm away from the protrusion and lateral movement guiding slopes, of which the canine lateral movement guiding slope is 12mm long and has an inclination angle of 60 degrees, and the incisor protrusion movement guiding slope is 8mm long and has an inclination angle of 45 degrees. Figure 6 As shown, the design of the bite plate is completed.

[0054] (5) A 3D printing method is used to produce a occlusal plate designed in step (4) as a template to obtain an occlusal stable therapeutic jaw plate for temporomandibular joint disorder.

[0055] Embodiment 3:

[0056] A method for preparing a therapeutic jaw plate for occlusal stabilization of temporomandibular joint disorders comprises the following steps:

[0057] (1) The patient was given a muscle relaxant for 2 hours to deprogram the masticatory muscles so that the positional relationship between the upper and lower jaws of the patient's joint hinge axis could be accurately obtained in the next step.

[0058] (2) Use the face bow, jaw fork and universal joint to transfer the position of the patient's upper jaw relative to the temporomandibular joint to the jaw frame.

[0059] (3) The wax block and bite recording silicone rubber are used to obtain the upper and lower jaw position relationship of the hinge axis at different vertical distances of the patient. The repeatability of the position relationship in the same arc is used to verify whether the hinge axis position relationship is correctly transferred to the jaw frame to obtain the adjusted jaw frame.

[0060] (4) The maxillary frame was digitally scanned, and the digital scanning results and occlusal relationship were imported into computer software to design a bite plate for the maxillary dentition. The bite plate was adjusted in height and opened until the cusps of the posterior teeth were 3 mm out of contact. The two premolars and the first and second molars in the lower left and right posterior tooth areas had only one buccal cusp in contact with the bite plate, and the canines and lower anterior teeth were in contact with the bite plate. The contact points between all the above teeth and the bite plate were point contacts; the contact point of the premolar was 5 mm away from the buccal and lingual edge of the bite plate, and the contact point of the cusp and lower anterior teeth was located on a horizontal platform and 2 mm away from the protrusive and lateral movement guiding slopes. The lateral movement guiding slope of the canine was 17 mm long and had an inclination angle of 60 degrees, and the protrusive movement guiding slope of the anterior teeth was 12 mm long and had an inclination angle of 45 degrees. The design of the bite plate was completed.

[0061] (5) A 3D printing method is used to produce a occlusal plate designed in step (4) as a template to obtain an occlusal stable therapeutic jaw plate for temporomandibular joint disorder.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing a therapeutic jaw plate for occlusal stabilization of temporomandibular joint disorders, characterized in that: The following steps are involved: (1) Obtain the upper and lower jaw position relationship of the patient's joint hinge axis and transfer it to the jaw frame; (2) The jaw frame and occlusal relationship were imported into the computer software, and the bite plate worn on the maxillary dentition was designed and the parameters were adjusted. The parameter adjustments included: the bite height was adjusted to open until the posterior cusps were out of contact by 1-3 mm, and only one buccal cusp of each of the two premolars and the first and second molars in the lower left and right posterior tooth areas was in contact with the bite plate, and the canines and lower front teeth were in contact with the bite plate; (3) The occlusal plate is manufactured by 3D printing according to the adjusted parameters.

2. The method for preparing the occlusal stable temporomandibular joint disorder therapeutic jaw plate according to claim 1, characterized in that: In the step (1), the patient wears a muscle relaxant for 1-3 hours before obtaining the upper and lower jaw position relationship of the joint hinge axis.

3. The method for preparing the occlusal stable temporomandibular joint disorder therapeutic jaw plate according to claim 1, characterized in that: In the step (2), all the contacts between the teeth and the occlusal plate are point contacts.

4. The method for preparing the occlusal stable temporomandibular joint disorder therapeutic jaw plate according to claim 1, characterized in that: The parameter adjustment in step (2) also includes: adjusting the premolar-molar contact point to be 3-5 mm away from the buccal-lingual edge of the bite plate; the canine and lower front teeth contact point is located on a horizontal platform and is 1-2 mm away from the protrusive and lateral movement guiding inclined planes.

5. The method for preparing the occlusal stable temporomandibular joint disorder therapeutic jaw plate according to claim 4, characterized in that: The canine lateral movement guiding bevel is 10-20 mm long and has an inclination angle of 50-70 degrees.

6. The method for preparing the occlusal stable temporomandibular joint disorder therapeutic jaw plate according to claim 4, characterized in that: The guiding slope for the protrusive movement of the anterior teeth is 5-15 mm long and has an inclination angle of 40-50 degrees.

7. A jaw plate for treating temporomandibular joint disorders with stable occlusion, characterized in that: The method is prepared by the preparation method according to any one of claims 1 to 6.

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