A flexible full-segment adjustable full mouth denture tray

Abstract

This invention belongs to the field of dental appliances, specifically relating to a flexible, fully adjustable complete denture tray, comprising: an upper tray, a lower tray, and an adjuster. The upper tray is shaped to conform to the upper dental arch and the shape of the maxilla, and is used to hold the impression material and fasten it to the upper jaw. The upper tray is deformable under pressure. The lower tray is shaped to conform to the direction of the lower dental arch, and is used to hold the impression material and fasten it to the lower jaw. The lower tray is deformable under pressure. The adjuster includes a first adjusting mechanism and a second adjusting mechanism. The first adjusting mechanism is located between the upper and lower trays and slides along the direction of the dental arch. The first adjusting mechanism presses on local areas of the upper and / or lower trays by rotating or stretching to cause local deformation of both. The second adjusting mechanism is located at the position of the upper and lower trays relative to the molars. The second adjusting mechanism is applied force to converge towards the retromolar pad to constrain the impression material at the retromolar pad position.

Description

Technical Field

[0001] This invention belongs to the field of dental appliances, specifically relating to a flexible, fully adjustable complete denture tray. Background Technology

[0002] The fabrication of complete dentures is a highly sophisticated dental restoration project, requiring a series of core steps including initial impression taking, individual tray fabrication, centric relation confirmation, denture shaping, and adjustment. The entire process is complex and time-consuming, typically requiring multiple follow-up visits to complete a complete denture set. This prolongs the treatment time, reduces the dentist's efficiency, and impacts the patient's experience. Among these steps, initial impression taking is the fundamental prerequisite for the entire denture fabrication process. Its quality directly determines the difficulty of subsequent fabrication steps and the fit of the finished denture, making it a key factor limiting the efficiency and quality of complete denture fabrication.

[0003] Currently, the primary impression collection method generally uses a traditional rigid metal tray. To improve the adaptability of multiple patients, the traditional tray adopts a universal size. During the collection, the doctor needs to first select a standard metal tray that roughly matches the patient's oral cavity, fill the prepared impression material evenly into the tray, and then press the tray into the patient's oral cavity. The doctor manually presses the tray and guides the patient to perform facial and oral movements such as opening and closing the mouth and sticking out the tongue, so that the patient's oral contour is completely imprinted in the impression material.

[0004] However, universal trays cannot adapt to the differences in the delicate areas of a single patient's oral cavity, especially for narrow areas such as the frenulum, the retromolar pad, and the posterior lingual fossa. Traditional rigid trays cannot accommodate these irregular contours. Furthermore, due to the narrow space and limited field of vision inside the oral cavity, doctors cannot directly observe the specific fit of the tray in the mouth, nor can they make targeted pressure adjustments to these hidden and delicate locations. The fit between the impression material and the patient's oral cavity depends entirely on the doctor's clinical experience and tactile feel. As a result, the initial impression cannot be taken completely and accurately in one go, and multiple impressions and calibrations are often required, which reduces impression efficiency, increases treatment costs, prolongs the denture fabrication cycle, and causes discomfort to patients during the repeated impression process, resulting in a poor patient experience.

[0005] To address the aforementioned shortcomings, there is an urgent need for a complete denture tray that can achieve precise control of the intraoral position and improve the efficiency and quality of impression taking. Summary of the Invention

[0006] To address the problems existing in the prior art, the present invention provides a flexible, fully adjustable complete denture tray. The tray is made of a deformable metal material, and local deformation is achieved by pressing the adjustment mechanism to compress the impression material at that point, thereby increasing the fit between the impression material and the jawbone.

[0007] The specific solution is as follows: A flexible, fully adjustable complete denture tray, comprising: The upper tray is shaped to fit the upper dental arch and the shape of the upper palate. It is used to hold the impression material and is fastened to the upper dental arch. The upper tray can deform under force. The lower tray is shaped to conform to the direction of the mandibular arch and is used to hold the impression material and is fastened to the mandibular jaw. The lower tray can deform under force. The adjuster includes a first adjusting mechanism and a second adjusting mechanism. The first adjusting mechanism is disposed between the upper tray and the lower tray and is slidably arranged along the dental arch. The first adjusting mechanism presses a local area of ​​the upper tray and / or the lower tray by rotating or stretching to cause local deformation of the two. The second adjustment mechanism is located at the position of the upper and lower trays relative to the molars. The second adjustment mechanism is subjected to force and converges towards the molar back pad to constrain the impression material at the position of the molar back pad.

[0008] Both the upper and lower trays are made of deformable shape memory metal, preferably nickel-titanium alloy. The factory-set shape is the existing conventional tray shape, which can deform under stress and then return to the factory shape after heating.

[0009] The upper and lower trays are positioned relative to the molars. When placed in the mouth, the trays correspond to the positions of the molars on the gums. The back molar pad is the area behind the last molar.

[0010] In existing rigid tray impression techniques, to enhance the fit of the impression material to oral tissues, the entire tray must be pressed down, causing the gums to sink deeper into the impression material. However, for delicate areas such as the frenulum of the upper and lower lips, the posterior palatal region, the lesser palatal fossa, the retromolar pads of the upper and lower molars, and the posterior fossa of the sublingual region, the tray's fit is insufficient for specific adjustments, resulting in unclear impressions. Yet, these detailed areas also play an important role in denture fabrication. Therefore, this solution uses adjusters and a malleable tray to adjust these delicate areas, solving the problem of inaccurate impressions of delicate areas caused by the traditional tray's "one-size-fits-all" approach.

[0011] Preferably, the first adjustment mechanism includes a sliding base, a labial / buccal adjustment assembly, and an intraoral adjustment assembly; The sliding base is slidably connected to the upper tray and the lower tray respectively. The labial and buccal adjustment components and the intraoral adjustment components are both fixed to the sliding base. The sliding base drives the labial and buccal adjustment components and the intraoral adjustment components to slide along the dental arch. The lip and cheek adjustment component fits onto the upper and lower trays near the lip and cheek sides to press the upper and lower trays to adjust the impression material in that position; The intraoral adjustment component extends through the sliding base into the mouth and has four degrees of freedom relative to the sliding base: pitch, yaw, roll, and forward / backward. This allows the intraoral adjustment component to press on any surface of the upper and lower trays located inside the mouth.

[0012] The first adjustment mechanism can adjust the position of any tray in the area excluding the posterior molars. By adjusting the position of the labial / buccal adjustment components, the upper / lower trays near the labial / buccal sides are pressed and adjusted to make the internal impression fit the outer surface of the jawbone better. Both the upper and lower trays are equipped with tracks. The intraoral adjustment components are slidably connected by engaging the sliding base with the two tracks. The intraoral adjustment components use the tracks to slide in multiple positions to press any area in the intraoral region excluding the molars, in order to finely adjust the fit between the intraoral impression material and the jawbone. The sliding base further increases the adjustment range of the labial / buccal adjustment components and the intraoral adjustment components to achieve full oral cavity coverage.

[0013] Preferably, the intraoral adjustment assembly includes a lever, a pressing head, and a ball-head connector. The ball-head connector has a central opening that is fitted outside the lever. The lever can slide along the axis relative to the ball-head connector. The sliding base has a ball cavity, and the ball-head connector is built into the ball cavity. The lever extends from outside the mouth to inside the mouth, and the outer surface of the pressing head is arc-shaped and fixed to one end of the lever inside the mouth.

[0014] The joystick is connected to the sliding base via a ball joint connector, allowing the joystick and the pressing head to rotate at any angle within the mouth. This achieves the three degrees of freedom of pitch, yaw, and roll for the intraoral adjustment component. Simultaneously, the joystick and the ball joint connector can move back and forth to adjust the depth of the pressing head within the mouth, satisfying the degree of freedom of movement of the intraoral adjustment component. The combination of multiple degrees of freedom allows the component to slide along the dental arch, enabling the entire intraoral adjustment component to press the pressing head onto any surface of the upper and / or lower trays within the mouth through rotation, stretching, and sliding. This allows for precise adjustments to any area requiring fine detail. The curved outer surface of the pressing head matches the curved surface within the mouth.

[0015] Preferably, the control lever has a hinge point between the pressing head and the sliding base, so that the part from the hinge point to the pressing head forms a swing segment that can swing up and down. The swing segment is connected to both the upper and lower parts by a guide wire, which pulls the swing segment to swing up and down. The guide wire extends from the inside of the control lever to the outside, and a guide wire retraction rocker is provided outside the opening.

[0016] The swing section allows the part of the control lever inside the mouth to be bent, increasing the flexibility of the control lever inside the mouth and creating an effect similar to a simulated finger. This makes it easier to press the position inside the mouth. The guide wire allows the doctor to control the swing section from outside the mouth, making the adjustment process more hygienic.

[0017] The guide wire retraction rocker can simultaneously retract and release two guide wires. The two guide wires are wound around the two ends of the guide wire retraction rocker in opposite directions. By rotating the guide wire retraction rocker, one guide wire is tightened while the other guide wire is released simultaneously. Both can control the swing segment while also fixing the swing segment.

[0018] Preferably, the labial / buccal adjustment assembly includes an upper pressing plate and a lower pressing plate. The upper pressing plate is in contact with the upper tray, and the lower pressing plate is in contact with the lower tray. When the sliding base slides along the dental arch, the upper pressing plate and the lower pressing plate press the upper tray and the lower tray on the labial / buccal surface, respectively.

[0019] Both the upper and lower pressing plates are elastic metal sheets, with one end fixed to the sliding base and the other end attached to the upper / lower tray. They press the upper / lower tray on the cheek side as the sliding base slides.

[0020] Preferably, both the upper and lower pressing plates are provided with tie-on shaping heads, which are embedded in the surfaces of the upper / lower pressing plates and the upper / lower trays that are in contact with each other, and the tie-on shaping heads are slidable relative to the upper / lower pressing plates.

[0021] The upper / lower pressing pads are provided with a through groove for the frenulum shaping head to slide. The through groove accommodates a slide rod connected to the frenulum shaping head. The slide rod and the through groove engage to achieve a sliding connection. The free end of the slide rod faces outward so that the doctor can manipulate the frenulum shaping head by sliding the slide rod. Moving the position of the slide rod allows the frenulum shaping head to slide in and out along the through groove, so that the frenulum shaping head can adjust the position of the frenulum independently.

[0022] Preferably, the second adjustment mechanism includes two molar adjustment components; the two molar adjustment components are respectively located on the left and right sides of the upper tray and the lower tray, at the opposite molar positions, and the sliding paths of the molar adjustment components and the first adjustment mechanism correspond to each other. When the first adjustment mechanism slides, it can apply pressure to the molar adjustment components.

[0023] The molar adjustment component is used to adjust the impression material at the molar pad. The molar adjustment component is positioned precisely on the sliding path of the first adjustment mechanism. After the first adjustment mechanism slides into contact with the molar adjustment component, it can press the molar adjustment component and apply pressure by continuing to slide.

[0024] Preferably, the molar adjustment assembly includes a drive member and two retaining members, which are respectively disposed on the upper tray and the lower tray. The retaining members are slidably connected to the upper / lower tray. The drive member is connected to the retaining members and drives the retaining members to move back and forth along the dental arch. When the retaining members move backward, they tighten inward from both sides of the gum to compress the impression material.

[0025] When the first adjustment mechanism slides to the drive member, it presses the drive member, which pushes the retractor to slide, causing the retractor to tighten inward and adjust the position of the molar back pad. When the first adjustment mechanism moves away, the retractor resets. When the first adjustment mechanism presses the drive member again, the retractor adjusts the molar back pad again. Multiple adjustments are made to achieve a precise mold of the molar back pad position.

[0026] Preferably, the converging component includes multiple arc-shaped pieces that conform to the upper / lower trays. The side walls of the upper / lower trays are provided with grooves. The arc-shaped pieces are hinged to sliding blocks and connected to the grooves. The hinges are located at the front of the arc-shaped pieces, preferably ball-head hinges. The rear ends of two adjacent arc-shaped pieces are provided with elastic elements that are connected to each other. When the driving component drives the arc-shaped pieces to move backward, one end of the arc-shaped piece disengages from the support of the upper / lower trays. The elastic elements contract and drive the arc-shaped pieces to move closer to each other, so that the converging component is tightened.

[0027] Before the condenser moves, the curved piece is attached to the upper / lower tray, which provides support for the curved piece to resist the elastic force of the elastic element. When the condenser moves backward, the rear end is separated from the support of the upper / lower tray, the elastic element contracts, and the condenser tightens.

[0028] Preferably, the driving component includes a fixed rod, a driving rod, a connecting rod, and a return spring. The fixed rod connects the upper tray and the lower tray and has a limit hole. The driving rod passes through the limit hole and is horizontally positioned. One end of the driving rod is provided with a return spring, and the other end is connected to the connecting rod. The connecting rod is connected to the converging component so that the converging component moves with the driving rod. When the driving rod is under force, it moves backward. When it is not under force, the return spring drives the driving rod to return to its original position.

[0029] The first adjustment mechanism is moved to the position of the driving component. After the force is applied, the driving rod is pressed back and moves backward. The driving rod drives the connecting rod, which in turn drives the constraint component, allowing the constraint component to slide along the slide groove. After the first adjustment mechanism is removed, the reset spring drives the driving rod to move forward, which in turn drives the connecting rod to move forward. The connecting rod then drives the constraint component to move forward, achieving a reset.

[0030] The beneficial effects of this invention are as follows: (1) This invention abandons the traditional rigid tray's single adjustment method of overall pressing and adopts a flexible upper and lower tray that can be deformed under force, which, together with the first adjustment mechanism and the second adjustment mechanism, forms a full-range adaptive adjustment system. The first adjustment mechanism adjusts the position of the pressing head or pressing plate through actions such as stretching, rotating, and sliding, so that it can accurately press the pre-adjustment area, causing local deformation of the upper / lower tray at that position, so that it can be specifically adjusted for the lip and cheek side and hidden areas inside the mouth. This makes up for the shortcomings of traditional trays that cannot adapt to narrow and irregular areas such as frenulum, palatal fossa, and posterior lingual fossa, and comprehensively improves the clarity and fit of the impression in the fine areas inside the mouth, eliminating the excessive dependence of the doctor's experience on the impression effect.

[0031] (2) By setting a dedicated second adjustment mechanism at the molar position on the upper and lower trays, and cooperating with the first adjustment mechanism, the invention utilizes a molar adjustment component that can be linked and reset, and relies on the driving component to drive multiple sets of arc-shaped constriction components to directionally constrict and tighten, which can accurately constrain and shape the impression material at the molar back pad position, effectively solving the pain points of limited oral field of vision, blurred impression in the hidden molar back pad area, and distorted contour, ensuring the impression accuracy of the key fitting area of ​​the denture, and laying the foundation for the subsequent denture fit and adaptability.

[0032] (3) The intraoral adjustment component of the present invention can realize flexible adjustment and depth control of the intraoral pressing head in multiple angles and dimensions. It is equipped with a swingable simulation swing section to accurately replicate the fine manual pressing action. All adjustment operations can be completed outside the mouth by rocker and slider, without the need for doctors to touch the inside of the mouth, avoiding the risk of cross-infection, improving the standardization and hygiene level of the impression taking operation, and greatly reducing the difficulty of operation in the narrow space inside the mouth. Attached Figure Description

[0033] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0034] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the first adjustment mechanism structure in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the second adjustment mechanism structure in Embodiment 1 of the present invention. Figure 1 ; Figure 5 This is a schematic diagram of the second adjustment mechanism structure in Embodiment 1 of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the lip and cheek adjustment component structure in Embodiment 1 of the present invention; List of components and reference numerals: 1-Upper tray, 2-Lower tray, 3-First adjustment mechanism, 31-Sliding base, 32-Lip and buccal side adjustment assembly, 321-Upper pressing plate, 322-Lower pressing plate, 323-Tie shaping head, 33-Intraoral adjustment assembly, 331-Operating lever, 332-Pressing head, 333-Ball head connector, 334-Swing section, 335-Guide wire, 336-Guide wire retraction rocker, 4-Second adjustment mechanism, 41-Molar adjustment assembly, 411-Drive component, 4111-Arc-shaped piece, 4112-Elastic component, 4113-Slide groove, 412-Contraction component, 4121-Fixing rod, 4122-Drive rod, 4123-Connecting rod, 4124-Reset spring. Detailed Implementation

[0035] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0036] In the description of this application, it should be understood that the terms indicating connection relationships should be interpreted broadly. In this application, the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0037] Example 1 like Figure 1-2 As shown, a flexible, fully adjustable complete denture tray includes: Upper tray 1 is shaped to conform to the shape of the upper dental arch and the upper palate. It is used to hold the impression material and is fastened to the upper dental arch. Upper tray 1 can deform under force. Lower tray 2, the shape of which conforms to the direction of the lower dental arch, is used to hold the impression material and is fastened to the lower dental arch. Lower tray 2 can deform under force. The adjuster includes a first adjusting mechanism 3 and a second adjusting mechanism 4. The first adjusting mechanism 3 is disposed between the upper tray 1 and the lower tray 2 and is slidably arranged along the dental arch. The first adjusting mechanism 3 presses a local area of ​​the upper tray 1 and / or the lower tray 2 by rotating or stretching to cause local deformation of the two. The second adjustment mechanism 4 is located at the position of the upper tray 1 and the lower tray 2 relative to the molar. The second adjustment mechanism 4 is subjected to force and converges towards the molar back pad to constrain the impression material at the position of the molar back pad.

[0038] Both the upper tray 1 and the lower tray 2 are made of deformable shape memory metal, preferably nickel-titanium alloy. The factory shape is set to the existing conventional tray shape. It can deform under stress and then return to the factory shape after heating.

[0039] The upper tray 1 and the lower tray 2 are positioned relative to the molars. When placed in the oral cavity, the trays correspond to the positions of the molars on the oral cavity. The back molar pad is the area behind the last molar.

[0040] In existing rigid tray impression techniques, to enhance the fit of the impression material to oral tissues, the entire tray must be pressed down, causing the gums to sink deeper into the impression material. However, for delicate areas such as the frenulum of the upper and lower lips, the posterior palatal region, the lesser palatal fossa, the retromolar pads of the upper and lower molars, and the posterior fossa of the sublingual region, the tray's fit is insufficient for specific adjustments, resulting in unclear impressions. Yet, these detailed areas also play an important role in denture fabrication. Therefore, this solution uses adjusters and a malleable tray to adjust these delicate areas, solving the problem of inaccurate impressions of delicate areas caused by the traditional tray's "one-size-fits-all" approach.

[0041] like Figure 3 As shown, the first adjustment mechanism 3 includes a sliding base 31, a labial / buccal adjustment component 32, and an intraoral adjustment component 33; The sliding base 31 is slidably connected to the upper tray 1 and the lower tray 2 respectively. The labial and buccal adjustment component 32 and the intraoral adjustment component 33 are both fixed to the sliding base 31. The sliding base 31 drives the labial and buccal adjustment component 32 and the intraoral adjustment component 33 to slide along the dental arch. The lip and cheek adjustment component 32 is attached to the upper tray 1 and the lower tray 2 near the lip and cheek side to press the upper tray 1 and the lower tray 2 to adjust the impression material at that position; The intraoral adjustment component 33 extends through the sliding base 31 into the mouth and has four degrees of freedom relative to the sliding base 31: pitch, yaw, roll, and forward / backward, so that the intraoral adjustment component 33 can press on any surface of the upper tray 1 and the lower tray 2 located inside the mouth.

[0042] The first adjustment mechanism 3 can adjust any tray position in the area excluding the posterior molars. By adjusting the position of the labial / buccal adjustment component 32, the upper / lower trays 2 near the labial / buccal sides of the tray are pressed and adjusted to make the internal impression fit the outer surface of the jawbone better. Both the upper tray 1 and the lower tray 2 are equipped with tracks. The intraoral adjustment component 33 is slidably connected by engaging the sliding base 31 and the two tracks. The intraoral adjustment component 33 uses the tracks to slide in multiple positions to press any area in the intraoral region excluding the molars, so as to finely adjust the fit between the intraoral impression material and the jawbone. The sliding base 31 further increases the adjustment range of the labial / buccal adjustment component 32 and the intraoral adjustment component 33 to achieve full oral cavity coverage.

[0043] The intraoral adjustment assembly 33 includes a lever 331, a pressing head 332, and a ball head connector 333. The ball head connector 333 has a central opening that is fitted outside the lever 331. The lever 331 can slide along the axis relative to the ball head connector 333. The sliding base 31 has a ball cavity, and the ball head connector 333 is built into the ball cavity. The lever 331 extends from outside the mouth to inside the mouth. The outer surface of the pressing head 332 is arc-shaped and fixed to one end of the lever 331 inside the mouth.

[0044] The control lever 331 is connected to the sliding base 31 via a ball joint connector 333, allowing the control lever 331 and the pressing head 332 to rotate at any angle within the mouth, realizing the three degrees of freedom of the intraoral adjustment component 33 in pitch, yaw, and roll. At the same time, the control lever 331 and the ball joint connector 333 can move back and forth to adjust the depth of the pressing head 332 within the mouth, satisfying the degree of freedom of the intraoral adjustment component 33 in the forward and backward dimensions. The combination of multiple degrees of freedom allows it to slide along the dental arch, enabling the entire intraoral adjustment component 33 to press the pressing head 332 on any surface of the upper tray 1 and / or lower tray 2 within the mouth through rotation, stretching, and sliding, thus satisfying any need for fine adjustment of any part. The arc-shaped outer surface of the pressing head 332 matches the arc surface within the mouth.

[0045] The control lever 331 has a hinge point between the pressing head 332 and the sliding base 31, so that the part from the hinge point to the pressing head 332 forms a swing section 334 that can swing up and down. The swing section 334 is connected to the upper and lower parts by guide wires 335. The guide wires 335 pull the swing section 334 to swing up and down. The guide wires 335 extend from the inside of the control lever 331 to the outside of the opening, and a guide wire retraction rocker 336 is provided outside the opening.

[0046] The swing section 334 allows the part of the control lever 331 inside the mouth to be flexible, increasing the flexibility of the control lever 331 inside the mouth and creating an effect similar to a simulated finger, which is more conducive to pressing the position inside the mouth. The guide wire 335 allows the doctor to control the swing section 334 from outside the mouth, making the adjustment process more hygienic.

[0047] The guide wire retraction rocker 336 can simultaneously retract and release two guide wires 335. The two guide wires 335 are wound around the two ends of the guide wire retraction rocker 336 in opposite directions. By rotating the guide wire retraction rocker 336, one guide wire 335 is tightened while the other guide wire 335 is released synchronously. The two can manipulate the swing section 334 to swing while also fixing the swing section 334.

[0048] The labial and buccal adjustment component 32 includes an upper pressing piece 321 and a lower pressing piece 322. The upper pressing piece 321 is in contact with the upper tray 1, and the lower pressing piece 322 is in contact with the lower tray 2. When the sliding base 31 slides along the dental arch, the upper pressing piece 321 and the lower pressing piece 322 press the upper tray 1 and the lower tray 2 on the labial and buccal surfaces, respectively.

[0049] Both the upper pressing plate 321 and the lower pressing plate 322 are elastic metal sheets. One end is fixed to the sliding base 31, and the other end is attached to the upper / lower tray 2. They press the upper / lower tray 2 on the lip and cheek side as the sliding base 31 slides.

[0050] like Figure 6 As shown, both the upper pressing plate 321 and the lower pressing plate 322 are provided with a tie-shaped head 323. The tie-shaped head 323 is embedded in the surface of the upper / lower pressing plate 322 and the upper / lower tray 2 that are in contact with each other. The tie-shaped head 323 can slide relative to the upper / lower pressing plate 322.

[0051] The upper / lower pressing plate 322 is provided with a through groove for sliding the ligature shaping head 323. The through groove accommodates a slide rod connected to the ligature shaping head 323. The slide rod and the through groove engage to achieve a sliding connection. The free end of the slide rod faces outward so that the doctor can manipulate the ligature shaping head 323 by sliding the slide rod. Moving the position of the slide rod allows the ligature shaping head 323 to slide in and out along the through groove, so that the ligature shaping head 323 can adjust the position of the ligature independently.

[0052] like Figure 4-5 As shown, the second adjustment mechanism 4 includes two molar adjustment components 41; the two molar adjustment components 41 are respectively located on the left and right sides of the upper tray 1 and the lower tray 2, respectively, at the relative molar positions. The sliding paths of the molar adjustment components 41 and the first adjustment mechanism 3 are corresponding. When the first adjustment mechanism 3 slides, it can apply pressure to the molar adjustment components 41.

[0053] The molar adjustment component 41 is used to adjust the impression material at the molar back pad. The molar adjustment component 41 is positioned precisely on the sliding path of the first adjustment mechanism 3. After the first adjustment mechanism 3 slides into contact with the molar adjustment component 41, it can continue to slide to press the molar adjustment component 41 and apply pressure to it.

[0054] The molar adjustment assembly 41 includes a drive member 411 and two retaining members 412. The two retaining members 412 are respectively disposed on the upper tray 1 and the lower tray 2. The retaining members 412 are slidably connected to the upper / lower tray 2. The drive member 411 is connected to the retaining members 412 and drives the retaining members 412 to move back and forth along the dental arch. When the retaining members 412 move backward, they tighten inward from both sides of the gum to compress the impression material.

[0055] When the first adjustment mechanism 3 slides to the drive member 411, the drive member 411 is pressed, and the drive member 411 pushes the retaining member 412 to slide, so that the retaining member 412 tightens inward to adjust the position of the molar back pad. When the first adjustment mechanism 3 leaves, the retaining member 412 resets. When the first adjustment mechanism 3 presses the drive member 411 again, the retaining member 412 adjusts the molar back pad again. Multiple adjustments are made to achieve a precise mold of the position of the molar back pad.

[0056] The converging member 412 includes multiple arc-shaped pieces 4111 that fit against the upper / lower tray 2. The side wall of the upper / lower tray 2 is provided with a sliding groove 4113. The arc-shaped pieces 4111 are hinged to a sliding block and connected to the sliding groove 4113. The hinge is located at the front of the arc-shaped pieces 4111, preferably a ball joint hinge. The rear ends of two adjacent arc-shaped pieces 4111 are provided with elastic members 4112 that are connected to each other. When the driving member 411 drives the arc-shaped pieces 4111 to move backward, one end of the arc-shaped pieces 4111 is disengaged from the support of the upper / lower tray 2. The elastic members 4112 contract and drive the arc-shaped pieces 4111 to move closer to each other, so that the converging member 412 is tightened.

[0057] Before the converging member 412 moves, the arc-shaped piece 4111 is attached to the upper / lower tray 2. The upper / lower tray 2 provides support for the arc-shaped piece 4111 to resist the elastic force of the elastic member 4112. When the converging member 412 moves backward, the rear end is disengaged from the support of the upper / lower tray 2, and the elastic member 4112 contracts, causing the converging member 412 to tighten.

[0058] The driving component 411 includes a fixed rod 4121, a driving rod 4122, a connecting rod 4123, and a return spring 4124. The fixed rod 4121 connects the upper tray 1 and the lower tray 2. The fixed rod 4121 has a limit hole. The driving rod 4122 passes through the limit hole and is horizontally set. One end of the driving rod 4122 is provided with a return spring 4124, and the other end is connected to the connecting rod 4123. The connecting rod 4123 is connected to the converging component 412 so that the converging component 412 moves with the driving rod 4122. When the driving rod 4122 is under force, it moves backward. When it is not under force, the return spring 4124 drives the driving rod 4122 to return to its original position.

[0059] The first adjustment mechanism 3 is moved to the position of the driving member 411. After the force is applied, the driving rod 4122 is pressed back and moves backward. The driving rod 4122 drives the connecting rod 4123, and the connecting rod 4123 drives the constraint member, so that the constraint member slides along the slide groove 4113. After the first adjustment mechanism 3 is removed, the reset spring 4124 drives the driving rod 4122 to move forward, which in turn drives the connecting rod 4123 to move forward. The connecting rod 4123 drives the constraint member to move forward, so as to achieve reset.

[0060] The upper and lower trays 2 are filled with impression material and installed on the upper and lower jaws respectively. The position of the pressing head 332 is adjusted by rotating the ball joint connector 333, sliding base 31, tensioning lever 331, and rotating guide wire control rocker, so that the pressing head 332 moves within the mouth of the upper tray 1. By moving and applying force to the pressing head 332, it presses the palatal portion, palatine fossa, and delicate areas of the posterior palatal region, causing local deformation of the upper tray 1 to compress the impression material and enhance the clarity of the impression. Rotating the control lever 331 axially causes the pressing head 332 to move downward, pulling the guide wire 335, causing the swing section 334 to move the pressing head 332 towards the outside of the mouth. Pulling the control lever 331 causes the pressing head 332 to press the posterior lingual fossa area. Through the movement of the sliding base 31, the entire posterior lingual fossa area is pressed. The upper and lower pressing plates 322 are in close contact with the labial and buccal sides of the upper and lower trays 2. When the sliding base 31 slides, the upper / lower pressing plate 322 presses the position at all times; when it slides to the tie, it pushes the slide rod to make the tie plastic head slide upward, squeezing the upper tray 1 at the tie, causing the internal impression material to overflow from the impression tape position; after the first adjustment mechanism 3 slides to the molar position, it will contact the second adjustment mechanism 4. If the second adjustment mechanism 4 continues to be squeezed to slide, the sliding base 31 will squeeze the drive rod 4122, causing the drive rod 4122 to drive the connecting rod 4123 to move backward, thereby driving the retaining member 412 to slide along the slide groove 4113, thereby causing one end to detach from the support of the upper / lower tray 2 and be bound by the elastic force of the elastic member, thereby squeezing the upper / lower tray 2 at the molar back pad to make the impression material overflow, thereby constraining the impression material to fit the molar back pad, and after multiple squeezes, a clear impression can be obtained; after pressing and adjusting all the fine areas, the initial impression can be clearly printed in one go.

[0061] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0062] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0063] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A flexible, fully adjustable complete denture tray, characterized in that, include: The upper tray is shaped to conform to the shape of the upper dental arch and the upper palate, and is used to hold the impression material and fasten it to the upper dental arch. The upper tray can deform under force. The lower tray is shaped to conform to the direction of the mandibular arch and is used to support the impression material and fasten it to the mandibular jaw. The lower tray can deform under force. An adjuster, comprising a first adjusting mechanism and a second adjusting mechanism, wherein the first adjusting mechanism is disposed between the upper tray and the lower tray and is slidably arranged along the dental arch; the first adjusting mechanism presses a local area of ​​the upper tray and / or the lower tray by rotating or stretching to cause local deformation of the two. The second adjustment mechanism is located at the position of the upper tray and the lower tray relative to the molar. The second adjustment mechanism is subjected to force and converges towards the molar back pad to constrain the impression material at the position of the molar back pad.

2. The flexible, fully adjustable complete denture tray according to claim 1, characterized in that, The first adjustment mechanism includes a sliding base, a labial / buccal adjustment assembly, and an intraoral adjustment assembly; The sliding base is slidably connected to the upper tray and the lower tray respectively. The labial and buccal adjustment components and the intraoral adjustment components are both fixed to the sliding base. The sliding base drives the labial and buccal adjustment components and the intraoral adjustment components to slide along the dental arch. The lip and cheek adjustment component is attached to the upper and lower trays near the lip and cheek sides to press the upper and lower trays to adjust the impression material at that position; The intraoral adjustment component extends through the sliding base into the mouth and has four degrees of freedom relative to the sliding base: pitch, yaw, roll, and forward / backward, so that the intraoral adjustment component can press on any surface of the upper tray and the lower tray located inside the mouth.

3. A flexible, fully adjustable complete denture tray according to claim 2, characterized in that, The intraoral adjustment assembly includes a joystick, a pressing head, and a ball-head connector. The ball-head connector has a central opening that is fitted outside the joystick. The joystick can slide along an axis relative to the ball-head connector. The sliding base has a ball cavity, and the ball-head connector is built into the ball cavity. The joystick extends from outside the mouth to inside the mouth, and the outer surface of the pressing head is arc-shaped and fixed to one end of the joystick inside the mouth.

4. A flexible, fully adjustable complete denture tray according to claim 3, characterized in that, The control lever has a hinge point between the pressing head and the sliding base, so that the portion from the hinge point to the pressing head forms a swing segment that can swing up and down. The swing segment is connected to guide wires at both the top and bottom, and the guide wires pull the swing segment to swing up and down. The guide wires extend from the inside of the control lever to the outside, and a guide wire retraction rocker is provided outside the opening.

5. A flexible, fully adjustable complete denture tray according to claim 2, characterized in that, The labial / buccal adjustment assembly includes an upper pressing plate and a lower pressing plate. The upper pressing plate is in contact with the upper tray, and the lower pressing plate is in contact with the lower tray. When the sliding base slides along the dental arch, the upper pressing plate and the lower pressing plate press the upper tray and the lower tray on the labial / buccal surface, respectively.

6. A flexible, fully adjustable complete denture tray according to claim 5, characterized in that, Both the upper and lower pressing plates are provided with a tie-on shaping head. The tie-on shaping head is embedded in the surface of the upper / lower pressing plate and the upper / lower tray that are in contact with each other, and the tie-on shaping head is slidable relative to the upper / lower pressing plate.

7. A flexible, fully adjustable complete denture tray according to claim 1, characterized in that, The second adjustment mechanism includes two molar adjustment components; the two molar adjustment components are respectively located on the left and right sides of the upper tray and the lower tray, at opposite molar positions. The sliding paths of the molar adjustment components correspond to those of the first adjustment mechanism, and the first adjustment mechanism can apply pressure to the molar adjustment components when it slides.

8. A flexible, fully adjustable complete denture tray according to claim 7, characterized in that, The molar adjustment assembly includes a drive member and two retaining members. The two retaining members are respectively disposed on the upper tray and the lower tray. The retaining members are slidably connected to the upper / lower trays. The drive member is connected to the retaining members and drives the retaining members to move back and forth along the dental arch. When the retaining members move backward, they tighten inward from both sides of the gum to compress the impression material.

9. A flexible, fully adjustable complete denture tray according to claim 8, characterized in that, The converging component includes multiple arc-shaped pieces that conform to the upper / lower trays. The upper / lower trays have grooves on their side walls. Each arc-shaped piece is hinged to a sliding block and connected to the groove. The rear ends of two adjacent arc-shaped pieces are connected to each other by elastic members. When the driving component drives the arc-shaped pieces to move backward, one end of the arc-shaped piece disengages from the support of the upper / lower trays. The elastic members contract, causing the arc-shaped pieces to move closer to each other, thereby tightening the converging component.

10. A flexible, fully adjustable complete denture tray according to claim 8, characterized in that, The driving component includes a fixed rod, a driving rod, a connecting rod, and a return spring. The fixed rod connects the upper tray and the lower tray and has a limit hole. The driving rod passes through the limit hole and is horizontally positioned. One end of the driving rod is equipped with a return spring, and the other end is connected to the connecting rod. The connecting rod is connected to the converging member so that the converging member moves with the driving rod. When the driving rod is under force, it moves backward. When it is not under force, the return spring drives the driving rod to return to its original position.

Images