CN216724816U - Linear plane occlusal artificial posterior dentition - Google Patents

Abstract

The utility model relates to an artificial posterior teeth technical field discloses an artificial back dentition of linear plane interlock type, including upper jaw back tooth and lower jaw back tooth, the occlusal surface of upper jaw back tooth is planar, the occlusal surface of upper jaw back tooth is the platform and the whole range of interlock contact of lower jaw back tooth interlock contact, lower jaw back tooth is including adjacent first preceding molar of lower jaw in proper order, lower jaw second preceding molar, lower jaw first molar and lower jaw second molar, lower jaw first preceding molar, lower jaw second preceding molar, lower jaw first molar and lower jaw second molar respectively the cheek point higher than the tongue point, and each cheek point is the rectangle plane, it links to each other to be located four left upper jaw back teeth, it links to each other to be located four upper jaw back teeth on right side, it links to each other to be located four left lower jaw back teeth, it meets to be located four lower jaw back teeth on right side. The utility model discloses can improve the overall artificial tooth of linear interlock and wear the chewing efficiency of tooth initial stage and improve tooth arrangement efficiency.

Description

Linear plane occlusal artificial posterior dentition

Technical Field

The utility model relates to an artificial back tooth technical field, concretely relates to artificial back dentition of linear plane interlock type.

Background

The edentulous jaw refers to a jaw bone after complete loss of maxillary dentition or (and) mandibular dentition due to various reasons, and is a common disease and frequently encountered disease occurring in the oral cavity. Complete dentures were the only method for edentulous jaw repair before the advent of implant dentures. Even today when artificial teeth are implanted, complete artificial teeth are still the only way to repair most of the patients without dentognathic jaw, especially the elderly patients, due to economy, general conditions and the like. The complete denture is composed of an artificial tooth and a base, and is adsorbed on the edentulous jaw ridge by the adsorption force and the atmospheric pressure generated by the edge sealing, thereby recovering the chewing, the beauty and the pronunciation functions of a patient. The periosteum and bone tissues under the denture base cover bear the occlusion pressure of the denture. Therefore, whether the patient can normally and comfortably use the complete denture is closely related to the height and the width of the edentulous jaw ridge of the patient and the position relation of the upper jaw arch and the lower jaw arch.

The rule of bone resorption of the remaining alveolar ridge is a chronic, progressive, irreversible, cumulative manifestation, which can be generally divided into four degrees (I degree-IV degree) of light, medium, heavy, and extremely heavy, and the absorption of the remaining alveolar ridge will not stop after absorption, but will continue to be absorbed in the jaw bone, but will not be completely absorbed by the jaw bone. The longer the time after the edentulous jaw, the more severe the absorption of the residual alveolar ridge, i.e., from I degree and II degree to III degree and IV degree.

The older the patient, the longer the edentulous time, and the more severe the absorption of the alveolar ridge, so severe low-level alveolar ridges at III and IV are very common in elderly patients and are a difficult point in complete denture repair. The older the patient is, the more and more the atrophy degree of the residual alveolar ridge becomes, and the elderly patients with III-degree and IV-degree severe absorption edentulous jaws become more and more common in clinic, and the complete denture fixing force and the capability of the alveolar ridge resisting the lateral force of the two kinds of edentulous jaws are greatly reduced. Especially, the mandibular denture has small supporting area, complex shape and damaged edge sealing, the repairing effect of the conventional complete denture occlusal artificial posterior teeth for patients without dentures of degree III and degree IV is very poor, and the complete denture is failed to repair because of the long-term mandibular mucosal tenderness or chewing pain which can not be adjusted and adapted after wearing the teeth.

At present, the most suitable repairing mode for the lower jaw III degree and IV degree edentulous patients is to use linear occlusion type complete denture to repair. The occlusal form has the advantages of large tolerance and small lateral force, and can greatly reduce the mucous membrane tenderness and chewing pain of patients after wearing teeth by severe alveolar ridges. However, since the working tip (i.e. the buccal cusp) of the occlusal artificial posterior teeth of the lower jaw is an edge-shaped connecting line, the width of the working tip is very narrow, like a knife edge, while the working tip and the occlusal surface of the upper jaw artificial posterior teeth are flat, and have no shape of a tip, a pit, a furrow and a ridge, the contact mode is similar to the contact mode of a kitchen knife and a chopping board. Therefore, a considerable part of patients, especially female patients, have difficulty in voluntarily catching food and reduced chewing efficiency in the initial stage of wearing the linear occlusion total denture, and for some very nutritious seed-shaped foods, such as kiwi fruit seeds, strawberry seeds, sesame, raspberry, wolfberry fruit and the like, the patients mainly complain about the incapability of biting and crushing.

In addition, when the back teeth are arranged in the prior art, the teeth are arranged in sequence by taking a single back tooth as a unit (16 artificial back teeth), so that the tooth arrangement difficulty is high, and the tooth arrangement efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses it is anticipated that the artificial back dentition of linear plane interlock type is provided to improve the efficiency of chewing that the tooth initial stage was worn to linear interlock total denture, and can improve the tooth arrangement efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the linear plane occlusal artificial posterior dentition comprises upper jaw posterior teeth and lower jaw posterior teeth, the occlusal surface of the upper jaw posterior teeth is planar, the occlusal surface of the upper jaw posterior teeth is a platform for occlusal contact of the lower jaw posterior teeth and the range of total occlusal contact, the lower jaw posterior teeth comprise a lower jaw first premolar, a lower jaw second premolar, a lower jaw first molar and a lower jaw second molar which are adjacent in sequence, the buccal cusps of the lower jaw first premolar, the lower jaw second premolar, the lower jaw first molar and the lower jaw second molar are higher than the lingual cusp, and the top of each cheek tip is a rectangular plane, the lower jaw first premolar, the lower jaw second premolar, the lower jaw first molar and the lower jaw second molar are connected with the four upper jaw posterior teeth on the left side, the four upper jaw posterior teeth on the right side, the four lower jaw posterior teeth on the left side and the four lower jaw posterior teeth on the right side.

The principle and the advantages of the scheme are as follows:

in practical application, the buccal cusps of the artificial posterior mandibular teeth in the present scheme are all rectangular planes, actually 4 blades are provided, the penetration and cutting of food are sharp, the blades are penetrated, the occlusal plane is ground, the occlusal table is crushed, and the buccal cusps of the artificial posterior mandibular teeth in the linear occlusion are blade-shaped connecting lines, the width of the buccal cusps is very narrow, like blades, the buccal cusps are in line-to-plane contact with the posterior mandibular teeth, the contact surface is small, the chewing efficiency is low, and food is difficult to capture.

The linear plane occlusal artificial posterior teeth in the scheme have good use effect and low manufacturing cost, and can keep the stability of the total denture.

The linear plane occlusion type artificial posterior teeth in the scheme have enough capability of penetrating food due to the fact that the occlusion surface of each lower jaw posterior tooth is provided with four rectangular blades, chewing efficiency in the initial stage of wearing teeth can be improved, and the linear plane occlusion type artificial posterior teeth can be applied to patients with partial side chewing.

Further, in the linear plane occlusal type artificial posterior upper maxillary posterior teeth according to the present invention, the occlusal surfaces of the eight posterior maxillary teeth are each planar and form a single plane as a whole, and the occlusal surfaces of the eight molars of the posterior mandibular teeth are each rectangular planar and form a single plane parallel to and relatively small in size with the plane of the posterior maxillary teeth as a whole, so that the three-dimensional requirement for the position of each artificial posterior tooth during the tooth arrangement is changed to the two-dimensional requirement parallel to the four occlusal planes formed by connecting the posterior upper maxillary teeth on the left and right sides and the posterior mandibular teeth on the left and right sides, respectively.

Therefore, in the technical scheme, the manufacturing and arrangement of the linear plane occlusal artificial posterior teeth do not need to take a single posterior tooth as a unit (16 artificial posterior teeth), but take a plane tooth row formed by connecting the first premolar, the second premolar, the first molar and the second molar in four areas on the left side and the right side of the upper jaw posterior tooth and the lower jaw posterior tooth as a unit, so that the formed artificial posterior dentition is 4 rows, and the four rows of posterior teeth form the integrated tooth arrangement, thereby greatly simplifying the steps of manufacturing and arranging the artificial posterior teeth and reducing the difficulty of tooth arrangement. Therefore, the design of the linear plane occlusal artificial posterior teeth in the technical scheme can greatly improve the manufacturing and tooth arrangement efficiency and lay a good foundation for CAD/CAM tooth arrangement on a computer.

Preferably, as a refinement, the width of the rectangular plane of each buccal cusp of the posterior mandibular tooth is 1.2mm or 1.5 mm.

The rectangular plane widths of the bucco-cusps of the lower jaw posterior teeth in the linear plane occlusal artificial posterior teeth in the scheme are both 1.2mm and 1.5mm, so that different requirements of patients on the stability and chewing efficiency of the complete denture can be met.

Preferably, as a modification, the buccal apices of the posterior mandibular teeth are linearly aligned in the mesial-distal direction.

By the arrangement, the rectangular planes of the lower jaw posterior teeth can be positioned on a straight line, so that the basic position requirement of the denture arrangement is met, and the stability of the denture is ensured.

Preferably, as a refinement, the buccal cusps of the mandibular first premolar and the mandibular second premolar are each 2mm above the lingual cusp.

By the arrangement, the rectangular plane of the buccal cusps of the lower jaw first premolar and the lower jaw second premolar only contacts with the plane of the upper jaw posterior teeth, and the tongue cusps do not contact with the upper jaw posterior teeth, so that interference during movement is avoided.

Preferably, as a refinement, lingual edges of the rectangular planes of the mandibular first premolar and the mandibular second premolar lie on a midline of a buccal lingual diameter.

The arrangement is mainly used for enabling the tooth position to accord with the basic principle of complete denture tooth arrangement, namely, the tooth arrangement is accurate in position, so that the rectangular planes of lower jaw posterior teeth can be arranged on a line, and the basic position requirement of the complete denture tooth arrangement cannot be influenced.

Preferably, as an improvement, the buccal tips of the first lower molar and the second lower molar are 1.5-2 mm higher than the lingual tips.

So set up for the rectangle plane of the buccal cusp of lower jaw first molar and lower jaw second molar only contacts with the plane of upper jaw back tooth, and the tongue point does not contact with upper jaw back tooth to avoid producing the interference when moving.

Preferably, as a refinement, the mesial buccal cusp and the distal buccal cusp of the first and second mandibular molars are connected to form a rectangular plane in the mesial-distal direction.

By the arrangement, the rectangular planes of the buccal cusps of the lower jaw posterior teeth are on the same line, so that the occlusion contact with the upper jaw posterior teeth is ensured to meet the requirements, and the chewing efficiency is improved.

Preferably, as a refinement, the mandibular first molar has no distal cusp and the lingual edge of the rectangular plane of the mandibular first molar is on the buccal side of the midline of the buccal-lingual diameter.

So set up, can make the tooth position in this scheme accord with the basic principle of complete denture row of teeth.

Drawings

Fig. 1 is a schematic view of an anatomical upper jaw portion or a lower jaw portion of a total denture.

Fig. 2 is a schematic structural view of the upper back teeth part in the embodiment of the linear plane occlusal artificial back dentition of the present invention.

Fig. 3 is a schematic structural view of the lower jaw posterior teeth in the embodiment of the linear plane occlusal artificial posterior dentition of the present invention.

Fig. 4 is a perspective view of the lower jaw first premolar in an embodiment of the linear planar occlusal artificial posterior dentition of the present invention.

Fig. 5 is a perspective view of the second premolar of the lower jaw in an embodiment of the linear planar occlusal artificial posterior dentition of the present invention.

Fig. 6 is a perspective view of the lower jaw first molar in an embodiment of the linear planar occlusal artificial posterior dentition of the present invention.

Fig. 7 is a perspective view of the second lower molar in an embodiment of the linear planar occlusal artificial posterior dentition of the present invention.

Fig. 8 is a schematic plan view of two rows of upper posterior teeth and two rows of lower posterior teeth in the embodiment of the linear planar occlusal artificial posterior dentition of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the middle incisor 1, the maxillary first premolar 4 ', the maxillary second premolar 5', the maxillary first molar 6 ', the maxillary second molar 7', the mandibular first premolar 4, the buccal cusp 41 of the mandibular first premolar, the lingual cusp 42 of the mandibular first premolar, the buccal cusp 43 of the mandibular first premolar, the mandibular second premolar 5, the buccal cusp 51 of the mandibular second premolar, the lingual cusp 52 of the mandibular second premolar, the buccal cusp 53 of the mandibular second premolar, the mandibular first molar 6, the buccal cusp 61 of the mandibular first molar, the lingual cusp 62 of the mandibular first molar, the buccal cusp 63 of the mandibular first molar, the mandibular second molar 7, the buccal cusp 71 of the mandibular second molar, the lingual cusp 72 of the mandibular second molar, the buccal cusp 73 of the mandibular second molar.

Examples

The general terms of application of the teeth and surface markings that the present invention will relate to will now be described. In addition, other descriptions of the tooth body according to the prior art can also be found in utility model patent CN2778225Y, and thus will not be described in detail herein.

Since the teeth on the left and right sides are symmetrically distributed, the present invention is illustrated with reference to the teeth on the right side.

Referring to fig. 1, a midline I-I between two central incisors 1 is shown. The midline is an imaginary line bisecting the craniofacial area. Normally, the midline passes between the eyes, the tip of the nose, the two maxillary central incisors and the two mandibular central incisors. The midline divides the arch into two bilaterally symmetrical parts.

The long axis of the tooth body is an imaginary axis passing through the center of the tooth body, and the tooth has four axial planes coincident with the long axis of the tooth body and a plane perpendicular to the long axis of the tooth body.

As shown in fig. 1, for the posterior maxillary and mandibular teeth, of the four axial surfaces of each tooth, the direction along the aligned tooth near the midline is mesial a, the direction along the aligned tooth away from the midline is distal B, the surface closer to the midline I-I is called the mesial surface, and the surface farther from the midline I-I is called the distal surface; the side of each tooth that is closer to the tongue is called the lingual side C, and the side that is closer to the cheek is called the buccal side D. As further indicated above, the surface that comes into contact when the upper and lower posterior teeth bite is referred to as the occlusal surface.

As shown in fig. 2 and 3, the linear planar type artificial posterior dentition in the present embodiment includes maxillary posterior teeth and mandibular posterior teeth. Fig. 2 shows the upper back teeth part of the linear plane occlusal artificial back teeth according to the present invention. As shown in fig. 2, the artificial posterior maxillary teeth include the first maxillary premolar 4 ', the second maxillary premolar 5', the first maxillary molar 6 'and the second maxillary molar 7', the occlusal surfaces of which are planar, and the planes of the first maxillary premolar 4 ', the second maxillary premolar 5', the first maxillary molar 6 'and the second maxillary molar 7' as a platform for the occlusal contact of the posterior mandibular teeth do not retain the characteristic structures such as cusp, socket, sulcus, ridge, gap, slope and the like similar to those of the anatomical model, and the entire occlusal contact range.

In the embodiment, the upper back teeth have a plane occlusal surface as a platform for occlusal contact of the lower back teeth and the range of total occlusal contact, so that the tolerance of the occlusal shape is the total range of the occlusal surface of the upper back teeth, the lower back teeth can freely move in the plane range of the upper back teeth, and the movement range is large. Thus, patients with one median position, patients with two long median positions in the median position, and patients with deviated positions with laterals chewing can freely close from the median position to the muscular position without obstruction. Also, the occlusal shape of this embodiment does not generate a lateral force when the lower jaw is extended forward and moved laterally.

Fig. 3 shows a lower jaw posterior tooth portion of a linear planar occlusal artificial posterior tooth according to the present invention. The artificial posterior mandibular teeth include mandibular first premolar 4, mandibular second premolar 5, mandibular first molar 6 and mandibular second molar 7.

The buccal cusps of the first mandibular premolar, the second mandibular premolar, the first mandibular molar and the second mandibular molar are all higher than the lingual cusp, and the buccal cusps are all rectangular planes.

The rectangular plane width of each buccal apex of the posterior mandibular teeth in this example is 1.2mm or 1.5 mm. The rectangular plane width of each buccal cusp of the lower jaw posterior tooth adopts the two specifications, so that the width of each buccal cusp of the lower jaw posterior tooth can be increased, and the requirements of patients with different alveolar ridge conditions on chewing efficiency can be met.

In this embodiment, the buccal cusps of the posterior mandibular teeth are linearly arranged in the mesial-distal direction, and in this embodiment, are linearly arranged. And the rectangular planes of the buccal apices of the four mandibular posterior teeth on the left side and the four mandibular posterior teeth on the right side form mutually inclined straight lines.

Referring to fig. 8, the upper two rows of posterior teeth are maxillary posterior teeth, and the lower two rows of posterior teeth are mandibular posterior teeth, in this embodiment, the four maxillary posterior teeth on the left side are connected, the four maxillary posterior teeth on the right side are connected, the four mandibular posterior teeth on the left side are connected, and the four mandibular posterior teeth on the right side are connected, thereby forming four rows of artificial posterior teeth. That is, in this embodiment, the upper jaw first premolar 4 ', the upper jaw second premolar 5', the upper jaw first molar 6 'and the upper jaw second molar 7' are connected as a single body, so that the upper jaw posterior teeth are integrated, and the lower jaw second premolar 5, the lower jaw first premolar 4, the lower jaw first molar 6 and the lower jaw second molar 7 are connected as a single body, so that the lower jaw posterior teeth are integrated. The rectangular planes on the two lines of lower jaw posterior teeth form a straight line respectively.

As shown in fig. 4, which shows a perspective view of the mandibular first premolar 4, the buccal cusp 41 of the mandibular first premolar 4 is higher than the lingual cusp 42 of the mandibular first premolar, and in this embodiment the buccal cusp 41 of the mandibular first premolar is higher than the lingual cusp 42 of the mandibular first premolar by 2 mm. The buccal cusps 43 of the mandibular first premolar are rectangular planes in the mesial-distal direction with a buccal-lingual width of 1.2mm or 1.5 mm. The lingual edge of the rectangular plane of the mandibular first premolar 4 is located on the midline of the buccal lingual diameter of the mandibular first premolar 4.

Fig. 5 shows a perspective view of the mandibular second premolar 5. The buccal cusp 51 of the mandibular second premolar is higher, e.g., about 2mm higher, than the lingual cusp 52 of the mandibular second premolar. The buccal cusps 53 of the mandibular second premolar are rectangular planes in the mesial-distal direction with a buccal-lingual width of 1.2mm or 1.5 mm. The lingual edge of the rectangular plane of the mandibular second premolar 5 is located on the midline of the buccal lingual diameter of the mandibular second premolar 5.

Fig. 6 shows a perspective view of the mandibular first molar 6. The buccal cusps 61 of the mandibular first molars are higher than the lingual cusps 62 of the mandibular first molars, e.g., 1.5 to 2mm higher. The mesial buccal apex of the mandibular first molar 6 is connected to the distal buccal apex of the mandibular first molar 6 and the buccal apex 63 of the mandibular first molar is a rectangular plane in the mesial direction with a buccal-lingual width of 1.2mm or 1.5 mm.

As further shown in fig. 3 and 6, the mandibular first molar 6 does not have a distal cusp and the lingual edge of the rectangular plane of the mandibular first molar 6 (i.e., the buccal cusp 63 of the mandibular first molar) is located on the buccal side of the midline of the buccal lingual diameter of the mandibular first molar 6.

Fig. 7 shows a perspective view of a second molar 7 according to the present lower jaw. The buccal cusp 71 of the mandibular second molar is higher than the lingual cusp 72 of the mandibular second molar, e.g., 1.5-2 mm higher. In the embodiment, the buccal tips of the lower jaw first molar 6 and the lower jaw second molar 7 are 1.5-2 mm higher than the lingual tips, so that the time is longer, and the heights of the buccal tips of the lower jaw first premolar 4 and the lower jaw second premolar 5 are close to the lingual tips. The mesial buccal apex of the mandibular second molar 7 is connected to the distal buccal apex of the mandibular second molar 7 such that the buccal apex 73 of the mandibular second molar forms a rectangular plane in the mesial-distal direction having a buccal-lingual width of 1.2mm or 1.5 mm.

As further shown in fig. 3 and 7, mandibular second molar 7 has no distal cusp and the lingual edge of the rectangular plane of mandibular second molar 7 (i.e., the buccal cusp 73 of the mandibular second molar) is located on the buccal side of the midline of the buccal lingual diameter of mandibular second molar 7.

In the embodiment, two 'linear plane occlusal type' artificial posterior teeth with working widths of 1.2mm and 1.5mm of the canine peak of the artificial posterior cheek of the lower jaw are designed and developed on the basis of linear occlusion, so that the chewing efficiency of the patient without the dental jaw at the initial stage of wearing the teeth at the degrees III and IV can be improved, and the requirements of different alveolar ridge conditions and the patient on the chewing efficiency can be met. The occlusal surfaces of the eight upper posterior teeth of the upper jaw of the linear plane occlusal artificial posterior teeth in the present embodiment are each planar and form a single plane as a whole, and the occlusal surfaces of the eight molars of the lower jaw posterior teeth are each rectangular planar and form a single plane parallel to the plane of the upper jaw posterior teeth and relatively small as a whole, that is, the upper and lower jaw posterior teeth in the present embodiment are in surface-to-surface contact, and the contact area is larger than the area where the buccal cusp of the lower jaw posterior teeth in the conventional linear occlusal technique is in blade-like contact with the plane of the upper jaw posterior teeth, so that the chewing efficiency can be improved and food can be more easily captured.

Although the mandibular artificial posterior buccal apex plane of the occlusal artificial posterior tooth in this embodiment is only 1.2 or 1.5mm wide, four edges are actually provided and the food penetration and cutting are still sharp. The lower jaw posterior teeth have penetrating edges, ground occlusal surfaces and crushed occlusal platforms, so that the efficiency of penetration and crushing is higher than that of only crushing of the traditional plane occlusion or the traditional linear occlusion, thereby improving the chewing efficiency in the initial period of wearing teeth

In addition, the occlusal contact area of the occlusal type artificial posterior teeth in this embodiment, although only 1.2 or 1.5mm wide, is increased several times as compared with the occlusal contact area of the conventional linear occlusion (the conventional occlusal contact is similar to the contact of a "kitchen knife and a chopping board"). Rectangular planes on four molars of the mandibular posterior teeth are linearly arranged to form linear facets from the mesial of the mandibular first premolar to the distal of the mandibular second premolar, the width of the edge (buccal cusp) of a conventional linear occlusion is within 0.3mm, calculated as the common length of 35mm, so that the occlusal contact area is 0.3mm x 35mm x 2-21 mm²。

In this example, when the artificial posterior teeth are occluded using a linear plane having a blade width of 1.2mm, the occlusion contact area of the present occlusion type is 1.2mm × 35mm × 2 to 84mm². More demanding on chewing efficiencyThe patient can use a linear plane with a 1.5mm wide edge to bite the artificial posterior teeth, and the biting contact area is 1.5mm multiplied by 35mm multiplied by 2-105 mm². Compared with the traditional linear occlusion, the occlusion contact area of the linear plane occlusion type is increased by 4 to 5 times, and the chewing efficiency in the initial stage of wearing the teeth can be greatly improved. In this way, the dependency on the lingual occlusion table is also reduced, thereby facilitating an increase in the chewing efficiency of the side-on chewing patient.

The biting type in this example was easy to blend, and the artificial back teeth were blended by rubbing with fine sandpaper using a glass plate pad. The traditional linear occlusion or the plane occlusion can be changed according to the needs of the patient.

The novel linear planar occlusal artificial posterior teeth according to the present embodiment each have an optimal 1.2mm or 1.5mm wide occlusal surface which provides practically 4 edges, being sharp for both food penetration and cutting. If the occlusal surface is wider than 1.2mm or 1.5mm, the chance of lateral force during lateral occlusion increases. When the occlusal surface is narrower than 1.2mm or 1.5mm, the effect of increasing the chewing efficiency is not significant. According to the utility model discloses a linear plane interlock type artificial posterior teeth is after using for a long time, and the sword of both sides can become blunt a little, and the occlusal surface can wear and tear, descend, still can maintain about 1.2mm or 1.5 mm's width to can keep the same interlock type for a long time (several years). That is, the "forced accepted bite type" that the patient initially wears is substantially the same as the "new individual bite type" that the patient will develop in the future. This means that the adaptation period or transition period of the patient will be very short, thereby helping to quickly restore good chewing function and improving quality of life.

The production process of the occlusal artificial posterior teeth in the embodiment is simplified, the tooth arrangement difficulty of a technician is reduced, and the production and tooth arrangement efficiency is improved. As shown in fig. 8, the linear plane occlusal artificial posterior teeth connect the first premolar, the second premolar, the first molar and the second molar on the left side of the upper jaw, the first premolar on the right side of the upper jaw, the second premolar, the first molar and the second molar, the first premolar on the left side of the lower jaw, the second premolar, the first molar and the second molar, the first premolar on the right side of the lower jaw, the second premolar, the first molar and the second molar, respectively, to produce four occlusal plane-uniform artificial posterior dentitions. In addition, the artificial posterior dentition is beneficial to improving the combination area and the combination strength of the artificial posterior dentition and the complete denture resin base.

The occlusal pattern in this embodiment is converted from a three-dimensional requirement for the position of each artificial posterior tooth to a two-dimensional requirement in which occlusal planes of four upper, lower, left, and right dentitions are parallel to each other during tooth arrangement. The planar occlusion contact ensures that the positioning mark points are well fixed and the tooth arrangement coordinate system is well established, so the tooth arrangement method is very suitable for tooth arrangement of a computer manipulator and lays a good foundation for CAD/CAM tooth arrangement on a computer.

The above description is only an example of the present invention, and the detailed technical solutions and/or characteristics known in the solutions are not described too much here. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (8)

1. The linear plane occlusal artificial posterior dentition comprises upper jaw posterior teeth and lower jaw posterior teeth, the occlusal surface of the upper jaw posterior teeth is in a plane shape, the occlusal surface of the upper jaw posterior teeth is a platform and a full occlusal contact range of the lower jaw posterior teeth, and the lower jaw posterior teeth comprise sequentially adjacent lower jaw first premolar teeth, lower jaw second premolar teeth, lower jaw first molar teeth and lower jaw second molar teeth, and is characterized in that: the buccal cusps of the first lower jaw premolar, the second lower jaw premolar, the first lower jaw molar and the second lower jaw molar are all higher than the lingual cusp, the buccal cusps are all rectangular planes, four upper jaw posterior teeth on the left side of the first lower jaw premolar, the second lower jaw premolar, the first lower jaw molar and the second lower jaw molar are connected, four upper jaw posterior teeth on the right side of the first lower jaw premolar, four lower jaw posterior teeth on the left side of the second lower jaw premolar, and four lower jaw posterior teeth on the right side of the second lower jaw posterior teeth are connected.

2. The linear planar bite type artificial posterior dentition as claimed in claim 1, wherein: the width of the rectangular plane of each cheek peak of the lower jaw posterior teeth is 1.2mm or 1.5 mm.

3. The linear planar bite type artificial posterior dentition as claimed in claim 1, wherein: the buccal apices of the mandibular posterior teeth are linearly aligned in the mesial-distal direction.

4. The linear planar bite type artificial posterior dentition as claimed in claim 1, wherein: the buccal tips of the first premolar and the second premolar of the lower jaw are 2mm higher than the lingual tip.

5. The linear planar bite type artificial posterior dentition as claimed in claim 4, wherein: the lingual edges of the rectangular planes of the mandibular first premolar and the mandibular second premolar lie on a midline of the buccal lingual diameter.

6. The linear planar bite type artificial posterior dentition as claimed in claim 1, wherein: the buccal tips of the first lower jaw molar and the second lower jaw molar are 1.5-2 mm higher than the lingual tips.

7. The linear planar bite type artificial posterior dentition as claimed in claim 6, wherein: the mesial buccal apices of the first lower molar and the second lower molar are connected with the distal buccal apices to form a rectangular plane in the mesial-distal direction.

8. The linear planar bite type artificial posterior dentition as claimed in claim 7, wherein: the mandibular first molar has no distal cusp and the lingual edge of the rectangular plane of the mandibular first molar is on the buccal side of the midline of the buccal-lingual diameter.

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