CN110063807A - Have the edentulous jaw personalization pallet apparatus and its application method that labial teeth aesthetics is considered - Google Patents

Abstract

The present invention relates to an edentulous individualized tray device with anterior teeth aesthetic considerations and a method for using the same, comprising an individual upper jaw tray, a pair of upper jaw occlusal banks arranged on both sides of the upper jaw individual tray, a lower jaw individual tray and a pair of upper jaw individual trays and a pair of upper jaw individual trays. The mandibular dentition on both sides of the mandibular individual tray is provided with an adjustable upper lip baffle at the front of the maxillary individual tray, and the rear of the mandibular dentition is provided with a positioning protrusion for determining the positional relationship between the upper and lower jaws. Compared with the prior art, the length and height of the upper lip baffle of the present invention match the length of the patient's anterior teeth and the amount of exposed teeth when laughing, and its protrusion matches the fullness of the upper lip of the patient, which can be used to consider the edentulous patient's condition. Anterior teeth aesthetics not only reduces the number of patient visits and operation time, but also takes into account both aesthetics and function.

Description

Personalized tray device for edentulous jaws with anterior teeth aesthetic considerations and method of using the same

technical field

The invention relates to oral medical instruments, in particular to an edentulous individualized tray device with anterior teeth aesthetic considerations and a method for using the same.

Background technique

When the natural dentition exists, the close contact between the upper and lower dentition determines the positional relationship of the upper and lower jaws. At this time, the relationship between the upper and lower jaws is the most extensive contact position (also known as the median jaw position). When the mandibular condyle is located in the physiologic posterior position where the articular cavity is centered and posterior and the surrounding tissues are not restricted, it is called the median relation position. For a normal occlusal person with dentition, the median jaw position is within about 1mm in front of the median relationship position or the two positions are consistent. The loss of natural dentition means the loss of the median jaw position. Without the support of the dentition and the mandible after the cusp lock, the mandible will move to various positions, and the mandibular protrusion and the lower 1/3 distance of the face are often shortened. For edentulous patients, the only stable reference position for the mandibular relationship is the median position. Therefore, it is necessary to determine and record the physiological posterior position of the joint at the height of 1/3 below the suitable surface, that is, the median relationship position.

The AvaDent digital production system for complete dentures uses an anatomic measuring device (AMD), including an upper lip baffle and a Gothic arch, but the device is a prefabricated tray with only three different sizes, which cannot meet different edentulous jaws. The needs of the patient, and the poor match with the patient's alveolar bone, the accuracy of the final impression is poor; and the Gothic arch tracing plate in the device has a large area, occupies the space of the tongue, and has a negative impact on the movement trajectory of the mandible. have some influence.

Yu Haiyang et al. of Sichuan University have applied for the invention of "An Aesthetic Information Transfer Device and Transfer Method for Anterior Teeth for Oral Restoration", application number: 201711059379.3. In this invention, the shield-shaped support plate is a prefabricated plate, the length and width of the support plate are not specified, and the design and manufacture are not personalized. In practical application, it needs to be adjusted to match the situation in the patient's mouth; Transfer the anterior teeth information and cannot be used to transfer the jaw position relationship (vertical relationship and horizontal relationship).

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the above problems and provide an edentulous personalized tray device with anterior teeth aesthetic considerations and a method of using the same.

The object of the present invention is achieved through the following technical solutions:

An edentulous individualized tray device with anterior teeth aesthetic considerations, comprising a maxillary individual tray, a pair of maxillary occlusal ridges, a pair of mandibular individual trays, and a pair of mandibular individual trays disposed on both sides of the mandibular individual tray. The mandibular occlusal embankment is provided with an adjustable upper lip baffle at the front of the upper mandibular individual tray, and a positioning protrusion for determining the positional relationship between the upper and lower jaws is disposed on the rear of the mandibular occlusal embankment.

The upper lip baffle is connected to the individual upper jaw tray through a connecting assembly,

The connecting assembly includes a connecting rod, a moving track, a rotating shaft and a fixing nut, the moving track is fixed on the individual upper jaw tray, one end of the connecting rod is fixedly connected with the upper lip baffle, and one end passes through the rotating shaft , and move back and forth through the movement of the rotating shaft in the motion track. The fixing nut is sleeved on the rotating shaft to fix the position of the rotating shaft to control the position of the upper lip baffle at one end of the connecting rod.

Specifically, the motion track is a concave cuboid, with a length of 8-10mm, a width of 10-12mm and a height of 8-10mm, with grooves on both sides, and the grooves on one side are hollow for the rotation shaft to pass through. The midpoint of 7mm is fixed on the individual maxillary tray 1 with adhesive material; the side of the motion track is drawn with straight lines with different angles (eg 0/10/20/30) to quickly determine the rotation angle of the upper lip baffle. The rotating shaft is a cylinder with a diameter of 2-3mm and a length of 13-15mm. There is a thread at the end of one side of 3-5mm. It goes out through the hollow groove on one side of the motion track and matches with the fixing nut. The connecting rod is a cuboid, with a length of 8-10mm, a width of 3-5mm and a height of 5-6mm, and passes through the rotating shaft 2-3mm from the bottom end of one side. The upper lip baffle can be moved forward/backward through the rotating shaft 5 in the movement track, the movement range is 5-6mm, and it can be rotated clockwise/counterclockwise by turning the connecting rod.

Further, the positioning projections are hemispherical projections, and two positioning projections are arranged on the mandibular occlusal embankment, which are respectively arranged at the positions of the second premolar and the first molar.

Further, the diameter of the hemispherical bump is 4-6mm.

Further, the height of the mandibular occlusal embankment is set to be (VD/2-2) mm, wherein VD is the vertical distance between the upper and lower jaws of the edentulous patient during the median occlusion.

Further, the height of the maxillary occlusal embankment is set to be (VD/2-2) mm, wherein VD is the vertical distance between the upper and lower jaws of the edentulous patient during the median occlusion.

Further, the chord length and the radian of the upper lip baffle are determined by the following methods: determine the intersection of the connecting lines of the alveolar ridges in the anterior tooth area and the posterior tooth area on both sides of the upper jaw, and use the length of the connecting line between the two points as the chord length of the upper lip baffle. , take the radian of the line connecting the two points as the radian of the upper lip baffle.

Further, the tray device is designed using CAD/CAM technology and produced by 3D printing.

A method for using an edentulous personalized tray device with anterior teeth aesthetic considerations, comprising the following steps:

(a) Preliminary impressions of the upper and lower jaws are taken, and the primary models are filled and scanned outside the mouth;

(b) Determine the vertical distance VD, use the median tray and the impression material to obtain the relationship between the upper and lower jaw arches, and reshape the appropriate anterior teeth fullness, and describe the angle of the mouth, the smile line, the midface line and the upper lip in the resting position on both sides The lower edge position mark line, scan and match with the original model scan file;

(c) making the tray device according to any one of claims 1-7;

(d) Try wearing the finished tray device, add wax embankment on the maxillary occlusal embankment, increase or decrease the height of the wax embankment according to the actual situation, and adjust the sagittal position of the upper lip baffle to a suitable position and fix it;

(e) Determine the median occlusal relationship and take a final impression.

Compared with the prior art, the present invention has the following characteristics:

1. The length and height of the upper lip baffle of the present invention match the length of the patient's anterior teeth area and the amount of exposed teeth when laughing, and its protuberance matches the patient's upper lip fullness, which can be used to consider the anterior teeth aesthetics of edentulous patients. CAD/CAM (digital design/digital fabrication) technology to design and manufacture a personalized tray device with an upper lip baffle and a simple gothic arch, the upper lip baffle is used to consider the esthetics of anterior teeth in edentulous patients, simple gothic The arch can quickly determine the relationship between the upper and lower jaws, and the device can be used to take final impressions of edentulous patients at the same time, which not only reduces the number of patient visits and operation time, but also takes into account both aesthetics and function.

2. Different from the traditional Gothic arch, the present invention is provided with a hemisphere at the positions of the second premolars and the first molars on both sides of the mandibular occlusal embankment, and the spherical depression at the corresponding position of the maxillary wax embankment should be accurate and clear during occlusion. Thus, a stable upper and lower jaw position relationship is determined. The Gothic arch does not block the movement of the tongue body and the movement of the lower jaw. The operation is simple and the patient comfort is better. The device can also be used to make final impressions of edentulous patients.

3. After the final impression, the intermaxillary relationship record and the anterior tooth aesthetic record are completed, the final impression, the device and the patient's facial shape can be scanned, and the data can be fitted to the digital production software of the complete denture. So as to guide the aesthetic arrangement of anterior teeth.

Description of drawings

1 is a schematic structural diagram of an individual maxillary tray of the present invention;

Fig. 2 is the structural representation of the individual mandibular tray of the present invention;

Fig. 3 is the sectional view at A, B, C place in Fig. 1;

4 is a schematic diagram of the upper and lower jaws of the device of the present invention when it is in a centered relationship;

In the figure: 1- individual upper jaw; 2- upper jaw; 3- upper lip baffle; 4- motion track; 5- rotating shaft; 6- connecting rod; 7- fixing nut; 8- individual lower jaw; 9- Mandibular occlusal; 10-positioning bump.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example

An edentulous individualized tray device with anterior teeth aesthetic considerations, as shown in Figures 1 and 2, includes an individual maxillary tray 1, a pair of maxillary occlusal embankments 2 arranged on both sides of the upper individual tray 1, and a mandibular individual tray 8 and A pair of mandibular occlusal embankments 9 are provided on both sides of the mandibular individual tray 8, an adjustable upper lip baffle 3 is provided at the front of the upper mandibular individual tray 1, and a rear part of the mandibular occlusal embankment 9 is provided for determining the positional relationship between the upper and lower jaws. Position the bumps 10 .

FIG. 3 is a cross-sectional view at points A, B, and C in FIG. 1 . The upper lip baffle 3 is connected to the individual maxillary tray 1 through a connecting assembly, the connecting assembly includes a connecting rod 6, a motion track 4, a rotating shaft 5 and a fixing nut 7, the motion track 4 is fixed on the individual maxillary tray 1, and one end of the connecting rod 6 It is fixedly connected with the upper lip baffle 3, one end passes through the rotating shaft 5, and moves back and forth through the rotating shaft 5 in the movement track 4. The fixing nut 7 is sleeved on the rotating shaft 5 to fix the position of the rotating shaft 5 so as to Control the position of the upper lip baffle 3 at one end of the connecting rod 6 .

Specifically, the motion track 4 is a concave cuboid, with a length of 8-10mm, a width of 10-12mm, and a height of 8-10mm. There are grooves on both sides. The grooves on one side are hollow for the rotating shaft 5 to pass through. The 7mm midpoint of the dental papilla is fixed on the individual maxillary tray 1 with adhesive material; the side of the movement track 4 is drawn with straight lines with different angles (eg 0/10/20/30) to quickly determine the rotation angle of the upper lip baffle 3 . The rotating shaft 5 is a cylinder with a diameter of 2-3mm and a length of 13-15mm. There is a thread at 3-5mm at the end on one side. The connecting rod 6 is a rectangular parallelepiped with a length of 8-10mm, a width of 3-5mm and a height of 5-6mm, and passes through the rotating shaft 5 at a distance of 2-3mm from the bottom end of one side. The upper lip baffle 3 can be moved forward/backward through the rotating shaft 5 in the movement track 4, the movement range is 5-6mm, and the connecting rod 6 can be rotated clockwise/counterclockwise.

The positioning protrusions 10 are hemispherical protrusions with a diameter of 5 mm. There are two positioning protrusions 10 on the mandibular occlusal embankment 9 , which are respectively set at the positions of the second premolar and the first molar. The height of the mandibular occlusal embankment 9 is set to VD/2-2mm, and the height of the maxillary occlusal embankment 2 is set to VD/2-2mm, where VD is the vertical distance between the upper and lower mandibles when the edentulous patient is centered, Fig. 4 is a schematic diagram of the upper and lower jaws when the device of the present invention is in a centered relationship.

The chord length and radian of the upper lip baffle 3 are determined by the following methods: determine the intersection of the line connecting the alveolar ridges in the anterior and posterior teeth areas on both sides of the maxilla, take the length of the line connecting the two points as the chord length of the upper lip baffle 3, and take the two points as the chord length of the upper lip baffle 3. The radian of the dotted line is taken as the radian of the upper lip baffle 3 .

The tray device was designed using CAD/CAM technology and made using 3D printing.

The specific working process is as follows:

1. Take the initial impression of the upper and lower jaws, fill the initial model, and scan outside the mouth;

2. Determine the vertical distance VD (unit: mm), use the median tray and the impression material to obtain the relationship between the upper and lower jaw arches, and shape the appropriate anterior teeth fullness, and describe the angle of the mouth, the smile line, the midface line and the resting line on both sides. The marking lines such as the position of the lower edge of the upper lip and the lower edge of the upper lip when in position are scanned and matched with the scanned file of the initial model;

3. Use CAD/CAM technology to design and 3D print individual trays with adjustable upper lip baffle and simple Gothic arch for upper and lower jaws (1, 8): Determine the positions of the second premolars and the first molars on the upper and lower jaw models , so that the occlusal embankment plane is parallel to its connecting line, the height of the posterior occlusal embankment (9) on both sides of the mandible is set to (VD/2-2) mm, and the second premolar and the first molar are provided with a hemispherical diameter of 5 mm. (10), the height of the maxillary occlusal embankment (2) is set to (VD/2-2) mm; the intersection of the line connecting the anterior and posterior alveolar ridges on both sides of the maxilla is determined, and the length of the line connecting the two points is used as the upper lip block The chord length of the plate (3), and the radian of the line connecting the two points is used as the radian of the upper lip baffle.

4. Intraoral try-in of the finished device to ensure stability and no warping after wearing, add 2mm wax embankment on the maxillary occlusal embankment, check the vertical distance of the patient, and increase or decrease the maxillary wax embankment height according to the actual situation. Adjust the sagittal position of the upper lip baffle by the rotating shaft (5) in the forward/backward motion track (4), adjust the angle of the upper lip baffle by rotating the connecting rod (6), and tighten the nut (7) after the patient is satisfied with the appearance. ) to fix the baffle position.

5. The patient is instructed to have a median occlusion. There is a spherical depression in the corresponding position of the maxillary wax embankment. The mandibular position when the depression is accurate and clear is taken as the median occlusal relationship.

6. Take the final impression.

The foregoing description of the embodiments is provided to facilitate understanding and use of the invention by those of ordinary skill in the art. It will be apparent to those skilled in the art that various modifications to these embodiments can be readily made, and the generic principles described herein can be applied to other embodiments without inventive step. Therefore, the present invention is not limited to the above-mentioned embodiments, and improvements and modifications made by those skilled in the art according to the disclosure of the present invention without departing from the scope of the present invention should all fall within the protection scope of the present invention.

Claims (9)

1. An edentulous individualized tray device with anterior teeth aesthetic considerations, comprising a maxillary individual tray (1), a pair of maxillary occlusal embankments (2) disposed on both sides of the maxillary individual tray (1), and a mandibular individual tray (8) and a pair of mandibular occlusal embankments (9) arranged on both sides of the mandibular individual tray (8), It is characterized in that an adjustable upper lip baffle plate (3) is arranged at the front of the individual upper jaw tray (1), and a positioning protrusion for determining the positional relationship between the upper and lower jaws is arranged at the rear of the lower jaw occlusal embankment (9). (10). 2. An edentulous personalized tray device with anterior teeth aesthetic consideration according to claim 1, characterized in that, the upper lip baffle (3) is connected to the upper jaw individual tray (1) through a connecting assembly )superior, The connecting assembly includes a connecting rod (6), a motion track (4), a rotating shaft (5) and a fixing nut (7), The moving track (4) is fixedly arranged on the individual upper jaw tray (1), one end of the connecting rod (6) is fixedly connected with the upper lip baffle plate (3), and one end passes through the rotating shaft (5), and is connected to the upper lip baffle plate (3) at one end. The rotating shaft (5) moves back and forth in the motion track (4), and the fixing nut (7) is sleeved on the rotating shaft (5) to fix the position of the rotating shaft (5) to control the connection The position of the upper lip baffle (3) at one end of the rod (6). 3. The edentulous personalized tray device with anterior teeth aesthetic considerations according to claim 1, wherein the positioning protrusions (10) are hemispherical protrusions, and the mandibular teeth align (10). 9) Two positioning protrusions (10) are provided on it, which are respectively arranged at the positions of the second premolar and the first molar. 4 . The edentulous personalized tray device with anterior teeth aesthetic considerations according to claim 3 , wherein the diameter of the hemispherical protrusion is 4-6 mm. 5 . The edentulous personalized tray device with anterior teeth aesthetic consideration according to claim 1, characterized in that, the height of the mandibular occlusal embankment (9) is set to (VD/2-2) mm , where VD is the vertical distance between the upper and lower jaws in edentulous patients during a median occlusion. The edentulous personalized tray device with anterior teeth aesthetic consideration according to claim 1, characterized in that, the height of the maxillary occlusal embankment (2) is set to (VD/2-2) mm , where VD is the vertical distance between the upper and lower jaws in edentulous patients during a median occlusion. 7. The edentulous personalized tray device with anterior teeth aesthetic consideration according to claim 1, wherein the chord length and arc of the upper lip baffle (3) are determined by the following method: For the intersection point of the line connecting the alveolar ridges of the lateral anterior and posterior tooth regions, the length of the line connecting the two points is used as the chord length of the upper lip baffle (3), and the radian of the two-point connecting line is used as the radian of the upper lip baffle (3). 8. The edentulous personalized tray device with anterior teeth aesthetic considerations according to claims 1-7, wherein the tray device is designed using CAD/CAM technology and produced by 3D printing. 9. A method of using an edentulous personalized tray device with anterior teeth aesthetic considerations as claimed in claim 1, characterized in that, comprising the following steps: (a) Preliminary impressions of the upper and lower jaws are taken, and the primary models are filled and scanned outside the mouth; (b) Determine the vertical distance VD: use the median tray and the impression material to obtain the relationship between the upper and lower jaw arches, and reshape the appropriate anterior teeth fullness, transfer the pupil connection line and the nasal alar tragus line as the occlusal plane, and describe the angle of the mouth on both sides. , the smile line, the midline of the face and the lower edge of the upper lip in the resting position, scan and match with the original model scan file, at this time measure the vertical distance between the upper and lower jaws, that is, VD; (c) making the tray device according to any one of claims 1-7; (d) Try wearing the completed tray device, add wax embankment on the maxillary occlusal embankment (2), increase or decrease the height of the wax embankment according to the actual situation, and adjust the sagittal position of the upper lip baffle (3) to an appropriate position. fixed; (e) Determine the median occlusal relationship and take a final impression.