CN109948271B - False tooth repair scheme design method and system based on data decision - Google Patents
False tooth repair scheme design method and system based on data decision Download PDFInfo
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- CN109948271B CN109948271B CN201910238398.5A CN201910238398A CN109948271B CN 109948271 B CN109948271 B CN 109948271B CN 201910238398 A CN201910238398 A CN 201910238398A CN 109948271 B CN109948271 B CN 109948271B
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Abstract
The invention relates to the field of computer assistance, and provides a false tooth repair scheme design method and system based on data decision. The method comprises the following steps: s1, establishing a dentition condition database and an artificial tooth repair scheme database; s2, detecting the conditions of all the current teeth to obtain detected current dentition data; s3, sequentially analyzing the data of the zone bit of each tooth number according to the collected current dentition data, and obtaining a preliminary denture restoration numbering scheme after all the zone bits are analyzed; and S4, further determining whether secondary data adjustment and scheme selection are needed and obtaining a final denture repair design scheme. The technical scheme provided by the invention is beneficial to providing a digital logic basis of denture design from the aspects of data analysis and decision; a scheme for automatically designing false tooth repair is established through a data decision method, a recommended scheme before repair is automatically given, and a clinician is assisted to make and modify the scheme, so that the workload of a doctor in a large hospital is reduced.
Description
Technical Field
The invention relates to the field of computer assistance, in particular to a false tooth repair scheme design method and system based on data decision.
Background
Teeth are one of the longest organs of accompanying human beings, and whether the teeth are healthy determines the level of quality of life of people, and besides the digestive system, pronunciation language and temporomandibular defects of people, the teeth can also affect the beauty and mental health of the face. Therefore, the lost tooth needs to be repaired by the false tooth, the function of the oral cavity is restored, and the burden of the tooth and other tissues in the oral cavity is relieved. According to the fourth national oral epidemic survey result released in 2017, at least 8944 thousands of people in China have tooth loss, wherein the number of teeth of 65-74-year-old people is 22.5.
There are generally three types of prosthodontic repair for dentition defects: removable dentures, fixed dentures, and implant dentures. The fixed denture needs to grind the adjacent natural teeth for bridging, the implant denture needs to be driven into the jaw bone, the two repair modes have high requirements on the oral cavity condition of a patient, the body and the oral cavity condition of the old are not necessarily suitable, and the cost of the two repair modes is high. The movable false tooth has the advantages of low price, wide adaptation diseases and safe and reversible treatment process, and is the most widely used tooth loss repairing mode at present. However, the repair rate of 65-74 old people with missing teeth in China is 63.2%, but nearly half of old people cannot repair missing teeth in time, and the repair rate of patients in rural remote areas is far lower than that in the urban level.
The existing removable denture design method has a series of problems. The range of partial denture prosthesis is from missing one tooth to only one tooth in the whole mouth. The human oral cavity has various tooth missing forms, 65536 kinds can be provided according to arrangement groups and methods, and the design scheme and the form of the removable partial denture are more complicated by the difference of the forms and the parts of teeth existing in the oral cavity of a clinical patient and different academic viewpoints. In addition, the patient's aesthetic, physiological and branch line surfaces (A), (B), (C) and (C)
The line connecting the rests is called the branch line, and the plane formed by the branch line is called the branch point plane), so that the design and manufacture of removable partial dentures have been considered to be a more complicated subject in oral medicine. Therefore, it is very difficult for dentists and young dentists to skillfully and correctly design removable partial dentures, and for the same reason, it is very difficult to develop a removable partial denture CAD system.
In order to provide a quick, intelligent and effective removable partial denture design scheme, an intelligent recommendation-based virtual removable denture design system is provided in patent CN108888372A, which can recommend a suitable removable denture design scheme based on preliminary matching from a case database according to the collected current dentition data, and another patent CN108735292A provides a removable denture case scheme recommendation for the detected dentition data based on the case database and a rule base. Although the above patent provides a solution that can provide an intelligent and effective denture design idea compared with the prior art, the above solution needs to be further improved for further performing automatic solution design on specific application case data, collected data and the like.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in view of the above-mentioned problems in the conventional denture design, a removable partial denture design method based on data decision is provided for intelligently providing an effective specific removable partial denture design scheme.
On one hand, the invention provides a denture repair scheme design method based on data decision, which comprises the following steps:
s1, establishing a dentition condition database based on a preset dentition data format, and establishing an artificial tooth repairing scheme database based on a preset artificial tooth repairing data format; the denture repair scheme database comprises a plurality of movable denture repair design schemes corresponding to dentition data;
s2, detecting the current tooth conditions, collecting the current tooth condition data representing the position relationship between upper, lower, left and right teeth, and obtaining the detected current dentition data, wherein the current dentition data are generated according to a preset dentition data format and also comprise current tooth attribute parameters;
s3, sequentially analyzing the data of the zone bit of each tooth number according to the collected current dentition data, analyzing the corresponding matched optimal denture attribute according to the numerical value of each corresponding zone bit, and obtaining a preliminary denture restoration numbering scheme after all the zone bits are analyzed;
and S4, after the primary denture restoration scheme is obtained after the dentition data are analyzed, further determining whether secondary data adjustment and scheme alternative are needed or not, and obtaining a final denture restoration design scheme.
Further, the method further comprises a database updating step S5, the current dentition condition data, the corresponding prepared tooth scheme and the finally determined denture repairing scheme are added into the denture repairing scheme database as new case data and the data are updated, and the updated database can be used for next matching recommendation based on the dentition data.
Further, before the dentition condition database and the denture repair plan database are constructed in step S1, a dentition data format and a denture repair data format are preset.
Further, the dentition data format is to encode all teeth and tooth states in dentition according to a certain encoding rule, and specifically includes:
for each tooth in the dentition, the tooth condition is encoded in the format of AA-B-C-DD for each of the landmarks wherein: AA bit represents a tooth position; b bit represents whether tooth exists, and 1/missing 0 exists; c bit represents the looseness; DD denotes the tilt direction.
Further, the denture repair data format is that the denture repair design scheme of the removable partial removable denture framework is encoded according to a certain encoding rule, and specifically comprises the following steps:
encoding each denture restoration design according to the EE-F-G-HH format, wherein for each marker: EE bit represents a tooth position; f bit represents whether a tooth exists or not, and 1/absence 0 exists; the G position represents the relation with the edentulous position; the HH bit represents the clasp number.
Further, in the step S2, partial tooth position characteristics of all the current teeth are detected according to the setting requirements of the subsequent steps, so that other tooth position characteristics and attribute parameters are collected and analyzed only for the missing teeth in the subsequent steps.
Further, the step S3 includes the following processing steps:
s3.1, generating current dentition condition data according to a preset dentition data format AA-B-C-DD, firstly analyzing AA and B positions of all dentitions, namely analyzing whether each tooth is missing or not, and preliminarily screening a snap ring scheme T1 suitable for the current missing dentition;
s3.2, further analyzing the C bit of the dentition condition data, namely analyzing the loosening condition of the teeth, and adjusting the preliminary clamping ring scheme T1 according to whether the teeth are loosened to obtain an adjusted clamping ring scheme T2;
and S3.3, further judging whether the tooth position inclines, analyzing the data of the DD position to judge whether the tooth inclines or not as the DD position represents the inclination direction, and readjusting the restoration scheme T2 according to whether the tooth inclines or not to obtain a readjusted snap ring scheme T3.
Further, the step S3.1 specifically includes:
s3.1.1, firstly, judging which missing tooth positions exist and judging the partition of a target tooth position;
when the B bit data is 0, the corresponding AA bit tooth is lost, and when the B bit data is 1, the corresponding AA bit tooth is not lost, so that all the lost tooth positions AA-0-X-X are identified and used as target tooth positions for further analysis;
s3.1.2, judging whether the missing tooth position belongs to a non-subclass;
when the AA position is X7 and the B position is 0, the tooth position deletion belongs to a non-subclass free deletion, and the specific class of the non-subclass free deletion needs to be further judged;
s3.1.3, further judging whether the missing tooth position belongs to a subclass;
and S3.1.4, if the missing tooth position is judged to belong to a subclass, further judging whether other problems occur and carrying out corresponding adjustment.
Further, the step S4 specifically includes:
s4.1, in order to meet various actual conditions, the replaceable snap rings of the determined preliminary snap ring scheme T3 are selected and replaced, replaceable alternative schemes are determined, and an alternative scheme set T4 is obtained.
S4.2, after the alternative schemes are analyzed and selected to obtain an alternative scheme T4, analyzing the stress of the corresponding support of each scheme;
and S4.3, after the selection of the alternative scheme and the analysis of the stress of the bracket are completed, obtaining a corresponding tooth preparation scheme T5, wherein the tooth preparation scheme T5 comprises the determined alternative scheme T4, various restoration schemes obtained after the stress of the bracket is analyzed are obtained, and finally, comprehensive evaluation is carried out according to the current dentition data and the data of other tooth condition attribute parameters, and the final denture restoration scheme T is determined.
In another aspect, the present invention further provides a data decision-based denture repair plan designing system implemented based on any one of the above denture repair plan designing methods, the system including:
the database construction module is used for establishing a dentition condition database based on a preset dentition data format and establishing an artificial tooth repair scheme database based on a preset artificial tooth repair data format; the denture repair scheme database comprises a plurality of movable denture repair design schemes corresponding to dentition data;
the dentition data acquisition module is used for detecting the conditions of all current dentitions, acquiring the condition data of all current dentitions representing the position relation of upper, lower, left and right teeth and obtaining the detected current dentition data, wherein the current dentition data are the current dentition condition data generated according to a preset dentition data format and also comprise current tooth attribute parameters;
the data analysis module is used for sequentially analyzing the data of the zone bit of each tooth number according to the collected current dentition data, analyzing the corresponding matched optimal denture attribute according to the numerical value of each corresponding zone bit, and obtaining a preliminary denture restoration numbering scheme after all the zone bits are analyzed;
and the data adjusting module is used for further determining whether secondary data adjustment and scheme alternative are needed for the primary denture repair scheme obtained after the dentition data are analyzed, so that the final denture repair design scheme is obtained.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the denture repair scheme design method and design system based on data decision realize the description and recording of dentition data conditions and the unified description of the denture design scheme, thereby being beneficial to providing the digital logic basis of denture design from the aspects of data analysis and decision.
2. According to the denture repair scheme design method and system based on data decision, the method and system for automatically designing the denture repair scheme are established through the data decision method, the examination, diagnosis and analysis at the expert level can be truly simulated according to the logic and conditions of each data bit, the pre-repair recommended scheme is automatically given, and a clinician is assisted to make and correct the scheme, so that the large hospital doctor reduces the workload, improves the working quality and meets the individual requirements of different individuals.
3. According to the denture repair scheme design method and system based on data decision, the output result can be connected with a 3D printer through a visualization system, the design drawing and the standardized work authorization book are output, and the denture repair scheme can be directly butted with a denture processing center of a denture processing factory to manufacture the denture, so that the problems that the drawing icons of a design sheet upper support for manufacturing the denture by a doctor are not uniform, the information recognition of the processing factory is possibly difficult due to different drawing levels and habits of the doctor are solved, the denture manufacturing work efficiency is greatly improved, and the rework probability is reduced.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a flow chart of the method of the present invention.
Fig. 2 is a view showing a structure of the removable denture according to the embodiment of the present invention.
FIG. 3 is a tooth position number chart according to an embodiment of the present invention.
Fig. 4 is a schematic view of a tooth preparation scheme in an embodiment of the invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the following description of the technical solutions of the present invention with reference to the accompanying drawings of the present invention is made clearly and completely, and other similar embodiments obtained by a person of ordinary skill in the art without any creative effort based on the embodiments in the present application shall fall within the protection scope of the present application.
As shown in fig. 1, embodiment 1 is a method for designing a denture repair plan based on data decision, comprising the steps of:
s1, establishing a dentition condition database based on a preset dentition data format, and establishing an artificial tooth repairing scheme database based on a preset artificial tooth repairing data format; the denture repair scheme database comprises a plurality of movable denture repair design schemes corresponding to dentition data;
before the database is constructed, the dentition data format and the denture repair data format need to be preset.
For the dentition data format, the embodiment of the present invention encodes all teeth and tooth states in the dentition according to a certain encoding rule, and in the embodiment, the following encoding rule is adopted:
firstly, for each tooth in the dentition, the tooth condition is coded according to the AA-B-C-DD format, and for each mark bit, the method comprises the following steps: AA bit represents tooth position (the tooth position coding adopts FDI tooth position numbering rule); the B position indicates the presence or absence of a tooth (presence of 1/absence of 0), the C position indicates the degree of looseness, and the DD position indicates the inclination direction. Normally, the denture repair design is considered only later when the code number of the 2 nd bit B is 0, namely, the denture repair is needed when the tooth is missing. The teeth are coded by default as XX-1-0-00, which means that the teeth at the XX dentition are present and have no looseness and no inclination.
Meanwhile, for each denture restoration data format, a partial removable denture support can be removed, the denture restoration design scheme is coded according to an EE-F-G-HH format, the EE bit represents a tooth position (same as an FDI numbering method), the F bit represents whether a tooth exists (1/missing 0 exists), the G bit represents the relation with the tooth missing position (non-abutment 0/far-intermediate free 1/far-intermediate tooth 2, wherein the non-abutment does not mean the tooth on which any denture component is arranged, the far-intermediate free represents that no tooth exists in the far center of the tooth, and the far-intermediate tooth is vice versa), and the HH bit represents a snap ring number. The type of the dental ring is XX-1-0-00 by default, namely that the teeth at the XX tooth position exist and are not the abutment, and no clamping ring is placed.
Wherein for tooth numbers AA bit and clasp number EE bit both represent tooth position, i.e. tooth number, in one embodiment the tooth position coding employs FDI tooth position numbering rules commonly used in the art: each tooth is represented by a two digit arabic number, with the first digit representing the quadrant in which the tooth is located: upper right, upper left, lower right at permanent teeth are 1, 2, 3, 4, the second bit represents the position of the tooth: 1-8 from the middle incisor to the third molar; the specific numbering process is shown in fig. 3, where the teeth of the upper and lower jaw are numbered according to the numbering example indicated on the figure.
The HH bit of the snap ring number indicates the number of the snap ring, i.e., different snap rings are encoded, thereby indicating the corresponding denture snap ring plan by the encoding. The numbering rule for this bit in one embodiment is as follows:
it should be noted that, in this embodiment, the default is near-middle-support and near-middle-bypass. If the far middle is needed, the digital codes are replaced, such as the near middle three arms 01 and the far middle three arms 10; mesial I-rod 11, distal I-rod a1.
The corresponding snap rings are described below:
three-arm snap ring: the retention arm starts from a far middle inverted concave area on the buccal side of the abutment, and the counter arm wraps around a far middle lingual angle (the far middle three-arm snap ring is opposite);
a ring-shaped snap ring: the retention arm starts from a retrocessed area on the buccal side or the lingual side of the abutment and ends at a non-retrocessed area on the lingual side or the buccal side;
a force-returning snap ring: labial retrogradation-distal (rest) -lingual-mesial (small connector);
anti-return force snap ring: lingual retrograde concave area-distal surface (rest) -buccal side-mesial buccal side (small connector);
half snap ring: buccal side retention arm & rest, lingual side counter arm & rest;
clearance snap ring: between natural teeth 3, 4
A abduction gap;
a combined snap ring: snap ring arm & snap ring body & HE rest;
extending the snap ring: (long arm snap ring) snap ring arm extends to the undercut region of the adjacent tooth;
a sharp tooth snap ring: the process comprises the following steps of mesial incision support, downward facing to a near-middle edge ridge of a lingual surface, upward turning to a tongue protuberance direction, turning to a far-middle edge ridge along the lingual surface to a far-middle cutting angle, and reversely folding to a labial surface to enter a mesial undercut area;
i, a rod: the extension arm extending from the reticular connecting body extends at least 3mm in parallel along the lower part of the gingival margin and turns to the HE direction at right angle, the tail end of the I rod (about 2 mm) enters a concave area (the depth is 0.25-0.5 mm) and stops at 1/3 of the gingival side of the abutment cheek side;
a T rod: basically requires the same I rod, only one tail end of the T rod enters the position-retaining undercut of 1/3 of gingiva on the buccal side of an abutment;
l rod: basically, the end of the L rod is positioned in 1/3 of the gingiva direction and the gingiva direction of the abutment tooth and the gingiva direction and is inverted concave;
u rod: basically requires the same I rod, the U rod extends out of the two finger-shaped retention arms to enter 1/3 of the gum on the cheek side of the abutment for retention and inversion;
a proximal-to-proximal panel: the width of the adjacent panel is about 1/2 of the distance between the lingual cusps of the abutments or about 1/3 of the lingual diameter of the abutments,
the gum is extended to be 1/2-2/3 of the length of the dental crown of the abutment, the adjacent panel is extended to the lingual side as much as possible, the thickness is about 1.0mm, the thickest part is close to the lingual side of the abutment and slightly exceeds the axial angle of the far and middle lingual side of the abutment;
far and near panel: the same as above;
RPI clasp group: near-middle
Supporting: the same as the support;
far and near panel: the same as above;
i, a rod: the same as above;
RPA snap ring set: near-middle
Supporting: the same as the support;
far and near panel: the same as above;
aker clasp: extending from the adjacent panel, and enabling the tail end of the retention arm to enter the mesial undercut of the buccal side of the abutment;
tongue plate: covering on the tongue bulge area of the lower anterior teeth, coordinating with the tongue bulge, entering into the tongue abduction gap between the teeth, and making the upper edge of the tongue in a fan-shaped wave shape;
palate plate: covering on the tongue bulge area of the upper anterior teeth, coordinating with the tongue bulge shape, entering into the inter-dental tongue abduction gap, and making the upper edge be in fan-shaped wave shape;
missing teeth: the mesh-like structure is used to cover the lingual apex area slightly off the buccal side, the mandible is covered to the central sulcus slightly off the buccal side, and the buccal direction ends up in a mesh-like shape.
The present example also provides a description of the corresponding dental preparation protocol as follows:
for the
Supporting: the form is as follows: circular triangle, by approximately
In the edge ridge
The center of the surface is gradually narrowed; length: 1/4 of the mesial-distal diameter of molars and 1/3 of the mesial-distal diameter of premolars; width: premolar teeth of 1/3 of the bucco-lingual diameter1/2 of the buccal and lingual diameters.
For lingual carina rest: the form is as follows: v-shaped coordinated with the tongue bulge shape is positioned at 1/3 and 1/3 of the gingiva of the cuspid and the lingual side at the widest part of the support, and the width of the support is gradually narrowed when the support extends to the adjacent surface, and the length of the support is as follows: 2.5-3 mm, width: about 2mm.
It should be noted that, for a complete design of a removable denture prosthesis comprising a bracket, an artificial tooth and an abutment, the embodiment of the present invention is only directed to a bracket solution, as shown in fig. 2, the removable denture bracket comprises a clasp and a connector, the embodiment of the present invention first calculates the type and position of the clasp according to the current oral cavity condition, and then automatically draws the connector in a design system.
After the dentition data and the denture repairing schemes are set according to the preset rules in a data format, each tooth in the dentition and each denture repairing scheme can be numbered and stored according to the preset encoding rules, one group of dentition data can correspond to one or more denture repairing schemes according to a certain mapping rule, and a repairing case is formed by mapping the associated group of dentition data and one or more denture repairing schemes.
S2, detecting the conditions of all the current teeth, collecting the condition data of all the current teeth representing the position relation of the upper, lower, left and right teeth, and obtaining the detected current dentition data, wherein the current dentition data are the current tooth condition data generated according to a preset dentition data format and also comprise current tooth attribute parameters;
after the current teeth are detected, the detection condition of each tooth in the dentition is coded according to the predefined AA-B-C-DD format, so that the detected dentition coded data is obtained, and other related attribute parameters of the current dental condition are recorded. In one embodiment, the related attribute parameters include age, gender, etc. of the corresponding tooth owner.
In an embodiment, step S2 may also detect partial features of all teeth at present according to the setting requirements of the subsequent steps, for example, only the missing situation of all teeth is collected, so that in the subsequent steps, only the non-missing teeth for placing the snap ring are collected and analyzed for other attribute parameters, thereby saving the calculation overhead and the data collection and analysis time.
S3, sequentially analyzing the data of the zone bit of each tooth number according to the collected current dentition data, analyzing the corresponding matched optimal denture attribute according to the numerical value of each corresponding zone bit, and obtaining a preliminary denture restoration numbering scheme after all the zone bits are analyzed;
step S3 is further described in detail as follows:
s3.1, current dentition condition data AA-B-C-DD are generated according to a preset dentition data format in the previous step, an AA bit and a B bit are analyzed, the AA bit represents a dentition, the data represent the position of a tooth, the B bit represents whether the tooth exists (1/missing 0 exists), therefore, the fact that the AA bit and the B bit are analyzed firstly is that whether each tooth is missing or not is analyzed, so that a preliminary denture scheme which can be suitable for repairing the missing dentition is screened out, and the data are expressed as EE-F-G-HH, and the specific analysis comprises the following steps:
s3.1.1, firstly, judging which missing tooth positions exist and judging the partition of a target tooth position;
when the B bit data is 0, the corresponding AA bit tooth is lost, and when the B bit data is 1, the corresponding AA bit tooth is not lost, so that all the lost tooth positions AA-0-X-X are identified and are used as target tooth positions for further analysis;
dividing dentition into four regions including an upper jaw 1 region, an upper jaw 2 region, a lower jaw 3 region and a lower jaw 4 region, wherein the AA position represents the upper jaw 1 region when the AA position is 1X, the AA position represents the upper jaw 2 region when the AA position is 2X, the AA position represents the lower jaw 3 region when the AA position is 4X, and the AA position represents the lower jaw 4 region when the AA position is 4X;
s3.1.2, judging whether the missing tooth position belongs to a non-subclass;
when the AA site is X7 and the B site is 0, the tooth site deletion belongs to non-subclass free deletion, and meanwhile, the specific class of the non-subclass free deletion needs to be further judged, all repair schemes suitable for all the non-subclass free deletion classes are preliminarily screened out from the false tooth repair scheme database, and the number expression schemes { EE-F-G-HH }, and the { } expression set of all the repair schemes are obtained;
s3.1.2.1, when the AA-B bit data is that 17-0 and 27-0 coexist in the upper jaw or 37-0 and 47-0 coexist in the lower jaw, the tooth position deletion belongs to bilateral dissociative deletion of Kenshi class I;
s3.1.2.2, when the AA-B bit data is that 17-0 or 27-0 exists in the upper jaw and 17-0 and 27-0 do not exist at the same time or 37-0 or 47-0 exists in the lower jaw and 37-0 and 47-0 do not exist at the same time, the tooth position deletion belongs to unilateral dissociative deletion of Kennel II;
s3.1.2.3, when the AA-B bit data is that no 17-0 and 27-0 exist in the upper jaw or no 37-0 and 47-0 exist in the lower jaw, the tooth position deletion belongs to Kensin III and IV non-free deletion.
S3.1.3, further judging whether the missing tooth positions belong to subclasses, and adjusting the repair scheme according to the judgment class;
s3.1.3.1, in the previous step, when the tooth position loss is identified as Kensin I type, if lost teeth PR-0-0-00 and PQ-1= PR exist in the near middle of PQ-1-X-XX, the tooth position loss is further considered to belong to a subclass, and then corresponding deformation adjustment is carried out on the denture repair scheme suitable for Kensin I type non-subclass to obtain a preliminary denture repair scheme of Kensin I type subclass; for example, for a condition where the missing tooth data is 15-17, 25-27, 13 missing, if 17-0-00 &27-0-0-00 occurs simultaneously, it is identified as ken's class I, when matching the design of the first missing tooth zone encountered bilaterally from the back to the front (15-17, 25-27 missing), if 14-1-0-00 and 13-0-0-00 occur simultaneously, it is identified as ken's class I subclass, when a three-arm clasp is placed by default on the abutment (14.12) on both sides of the missing tooth (13), i.e., EE =12, 14, hh =01;
s3.1.2.2, the dentition deletion further considered to be of a subclass in the previous step when it has been identified as Kensin class II if PR-0-0-00, PQ-1= PR is present in the near centre of PQ-1-X-XX; for example, for a condition with a missing tooth site 15-17, 13, if 17-0-0-00 occurs alone, the missing tooth site is identified as Ken's class II, matching the design of the first edentulous area encountered on both sides from back to front (15-17 missing); if 14-1-0-00 and 13-0-0-00 occur simultaneously, the tooth site deletion is identified as Kensing II subclass, and then a three-arm clamping ring is placed in the abutment (14.12) on two sides of the deleted tooth (13) by default;
and S3.1.2.3, in the previous step, when the tooth position missing is identified as Kensing III and IV, matching the design of the first tooth missing area encountered on two sides, and if other tooth positions are missing, default placing three-arm snap rings on two sides of the missing tooth.
S3.1.4, if the missing tooth position is judged to belong to a subclass, further judging whether other problems occur and carrying out corresponding adjustment;
s3.1.4.1, if the adjacent abutment of the tooth position of the subclass is also lost, jumping to the mesial direction;
s3.1.4.2 if different restorative solutions are presented to the same tooth, snap ring priorities (> symbol indicates priority) are set, for example:
1) The snap ring group priority is RPI (21)/RPA (22) > three arms (10.01);
2) The priority of the clamping ring and the support is that the clamping ring (XX) > the support (31.32.33)
S3.1.4.3, if the abutment is a premolar (X4-0-0-00. X5-0-0-00) or a first molar (X6-0-0-00), replacing the three-arm snap ring (01.10) with a half-and-half snap ring (05).
And S3.2, analyzing the C bit of the tooth condition data corresponding to the tooth position for placing the snap ring in the preliminary screening scheme, wherein the C bit represents the looseness (not loose 0/loose 1), so that the substantial analysis on the C bit data is to analyze the tooth looseness, judge whether the tooth looseness is suitable for placing the snap ring, adjust the restoration scheme according to the looseness, and adjust the mark bit data of the scheme expression EE-F-G-HH in the digital logic expression.
When the C bit data =0, the I degree class is not loosened, and the scheme of the clamping ring is not modified;
when the C bit data =1, II °/III ° class looseness is shown, the periodontal splint needs to be jumped at this time, and the tooth position after the jump, namely EE bit data, is correspondingly adjusted.
If the jump is needed, the jump direction is a direction far away from the missing tooth position, and the selection of the snap ring HH needs to be further determined as follows:
1) If the same-name snap ring exists, the same-name snap ring is directly adopted;
2) If the same snap ring does not exist, a three-arm snap ring is adopted.
For example, since the snap ring can be placed only on the natural tooth, if there is a ring type at the tooth position 16 (EE = 16), it is loosened (C = 1), it is necessary to jump to the tooth position 15 (EE = 15), if there is just one ring type snap ring at the tooth position 15, then a ring type snap ring is selected (HH = 02), and if there is no ring type snap ring at the tooth position 15, then a three-arm snap ring is selected (HH = 01).
S3.3, further judging whether the tooth position for placing the snap ring inclines or not, and analyzing the data of the DD bit to analyze whether the tooth position inclines or not and what kind of selection or adjustment needs to be carried out on the repair scheme because the DD bit represents the inclination direction, wherein the data of each mark bit of the scheme expression EE-F-G-HH is represented to be adjusted in the digital logic expression;
firstly, for the tilting condition, the embodiment is divided into two cheek-tongue directions and a near-far middle direction, and the corresponding relationship between the DD bit data and the tilting condition is specifically as follows: no tilt 00/mesial 01/distal 02/buccal 03/lingual 04/mesial 05/mesial 06/distal 07/distal 08, wherein mesial 01 means the tooth is biased to one side near the midline of the dentition, and distal 02 is the opposite; buccal side 03 indicates the side of the tooth that is closer to the buccal mucosa, and lingual side 04 is the opposite; cheek 05 means tooth is mesial and buccal; the proximal tongue 06 indicates that the tooth is deflected mesially and to the lingual side; distal cheek 07 indicates that the tooth is distal and buccal; distal tongue 08 indicates that the tooth is distal and lingual;
1) When the abutment inclines in the mesial direction (namely, the data corresponding to the DD bit is one of 01, 05 and 06), whether the position of the support is changed or not needs to be further judged (the mesial-distal support is selected, and the trend of the clamping ring is adjusted along with the change of the support);
2) When the abutment has a buccal-lingual inclination (i.e., one of 03, 04, 05, 06, 07, 08 corresponding to DD-bit data), and if the clip is a bar-shaped clip (i.e., if the corresponding clip number HH is: 11.12, 13, 14 and one of 21, 22, 23, 24, 25), then rod-shaped snap-ring repairs are not feasible, requiring modification of the current snap-ring type HH.
And S4, after the primary denture restoration scheme is obtained after the dentition data are analyzed, further determining whether secondary data adjustment and scheme alternative are needed or not, and obtaining a final denture restoration design scheme.
And (4) analyzing each data bit of the tooth position number in the step (S3) to obtain a snap ring scheme of the primary selection scheme, and at the moment, replacing the snap ring according to the affiliated situation, and analyzing the stress of the bracket to obtain a proper tooth preparation scheme.
S4.1, selection and replacement of the replaceable snap ring, and comprehensive consideration can be carried out on the determined preliminary snap ring scheme in the step so as to meet various practical conditions, and replaceable alternatives HH are determined.
S4.1.1, when the free loss occurs, namely the dentition data are X7-0-0-00 and comprise upper jaw 17-0-0-00, 27-0-0-00 and lower jaw 37-0-0-00, 47-0-0-00, RPI (21), RPA (22), RPT (23), RPL (24) and a ring-shaped snap ring (02) can be used for interchanging on the abutment adjacent to the free loss;
s4.1.2, the I rod (11), the L rod (12), the T rod (13) and the U rod (14) can be interchanged for the rod-shaped clamping ring;
s4.1.3, the ring-shaped snap ring (02) used on the second molar (X7-0-0-00) and the three-arm snap ring (01, 10) can be interchanged;
s4.1.4, the return force snap ring (03) and the return force resisting snap ring (04) can be interchanged;
s4.1.5, the three-arm clamp ring (10.01) of the cuspid (X3-0-0-00), the cuspid clamp ring (09) and the near-middle gap clamp ring (60) can be interchanged;
s4.1.6, the extension clamp ring (08.80), the combined clamp ring (07) and the three-arm clamp ring (01.10) of the two continuous abutment teeth can be interchanged;
s4.1.7, the clamping rings in the near middle and the far middle can be interchanged;
s4.1.8, for premolars of canine teeth and first molar teeth (AA position is X3, X4, X5, X6), the three-arm snap ring (01.10) and the rod-shaped snap ring (snap ring number: 11.12.13.14) can be interchanged, wherein the first molar tooth (X6) can be replaced by a U rod (15)
And S4.2, after the alternative schemes are analyzed and selected, analyzing the stress of the corresponding support. Wherein the corresponding terms for the force analysis of the stent are described below:
(1) Branch line: connecting wires of the supports;
(2) A fulcrum surface: a surface formed by branch lines;
(3) Fixing a bit line: connecting the snap ring tips;
(4) A lever:
4.1 Lever): a connecting line between the nearest fulcrum and the farthest fulcrum in the free tooth-missing area;
4.2)
force point: dissociating the center of the edentulous area;
4.3)
arm of force:
the vertical distance from the force point to the lever;
4.4 Balanced force point): a fulcrum furthest from the lever;
4.5 Balanced arm): the vertical distance of the balance force point to the lever.
And S4.3, after the selection of the parallel replacement scheme and the analysis of the stress of the bracket are finished, obtaining a corresponding tooth preparation scheme, as shown in fig. 4, a schematic view of the tooth preparation scheme after the stress analysis of the bracket is carried out is shown, wherein the tooth preparation scheme comprises the replaceable bracket scheme determined in the previous step and each repair scheme obtained after the stress analysis of the bracket is carried out, and finally, comprehensive evaluation is carried out according to the current dentition condition data and the data of other dentition attribute parameters, and the final denture repair scheme is determined.
In one embodiment, the evaluation can be used for carrying out calculation evaluation based on data matching degree on each tooth preparation scheme according to a certain algorithm, and the scheme corresponding to the evaluation result with the highest score is selected as the final denture repair scheme; other attribute parameters may also include the price cost of the solution in one embodiment to satisfy the solution selection that needs to take into account the budget for individual cases.
And S5, a data updating step, namely adding the current dentition condition data, the corresponding tooth preparation scheme and the finally determined denture repair scheme into a denture repair scheme database as new case data and updating the data, wherein the updated database can be used for a matching recommendation database for detecting the dentition data next time.
Correspondingly, an embodiment of the present invention further provides a data decision-based denture repair plan design system, which is a corresponding design system constructed based on the denture repair plan design method in any of the foregoing embodiments, and the system includes:
the database construction module is used for establishing a dentition condition database based on a preset dentition data format and establishing an artificial tooth repair scheme database based on a preset artificial tooth repair data format; the denture repair scheme database comprises a plurality of movable denture repair design schemes corresponding to dentition data;
the dental condition data acquisition module is used for detecting the conditions of all the current teeth, acquiring the condition data of all the current teeth representing the position relationship between the upper teeth, the lower teeth, the left teeth and the right teeth, and acquiring the detected current dentition data, wherein the current dentition data are the current dental condition data generated according to a preset dentition data format and also comprise current tooth attribute parameters;
the data analysis module is used for sequentially analyzing the data of the zone bit of each tooth number according to the collected current dentition data, analyzing the corresponding matched optimal denture attribute according to the numerical value of each corresponding zone bit, and obtaining a preliminary denture restoration numbering scheme after all the zone bits are analyzed;
and the data adjusting module is used for further determining whether secondary data adjustment and scheme alternative are needed for the primary denture repair scheme obtained after the dentition data are analyzed, so that the final denture repair design scheme is obtained.
By the denture repair scheme design method and the denture repair scheme design system based on data decision provided by the embodiment, a case system which is suitable for the removable denture design of a casting support and can be used for automatically analyzing and screening the current tooth condition can be established by a data analysis method, expert-level data analysis is truly simulated, a recommended plan before repair and a final denture repair scheme are given, and a clinician is assisted to make a scheme, so that the workload of a large hospital doctor is reduced, and the working quality is improved; the output result can also be connected with a 3D printer, a design drawing and a standardized work authorization book, and can be directly butted with a manual work center of a false tooth processing factory to manufacture false teeth. The problem of because doctor's drawing level, custom differ, lead to the doctor to draw the icon for the design list upper bracket of technician preparation denture non-uniform, the processing factory probably recognizes the information difficulty is solved, improved artificial tooth preparation work efficiency greatly, reduce the probability of doing over again for the patient possesses more comfortable, simple experience of seeking medical advice.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification, and to any novel method or process steps or any novel combination of steps disclosed.
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification may be replaced by alternative features serving an equivalent or similar purpose, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Claims (7)
1. A data decision-based denture repair plan design method, comprising the steps of:
s1, establishing a dentition condition database based on a preset dentition data format, and establishing an artificial tooth repairing scheme database based on a preset artificial tooth repairing data format; the denture repairing scheme database comprises a plurality of movable denture repairing design schemes corresponding to dentition data;
s2, detecting the current tooth conditions, collecting the current tooth condition data representing the position relationship between upper, lower, left and right teeth, and obtaining the detected current dentition data, wherein the current dentition data are generated according to a preset dentition data format and also comprise current tooth attribute parameters;
s3, sequentially analyzing the data of the zone bit of each tooth number according to the acquired current dentition data, analyzing the corresponding matched optimal denture attribute according to the numerical value of each corresponding zone bit, and obtaining a preliminary denture repairing numbering scheme after all the zone bits are analyzed;
s4, after the dentition data are analyzed to obtain a primary denture repairing scheme, further determining whether secondary data adjustment and scheme alternative are needed or not, and obtaining a final denture repairing design scheme;
in step S1, before the dentition condition database and the denture repair plan database are constructed, a dentition data format and a denture repair data format are preset; the dentition data format is to encode all teeth and tooth states in dentition according to a certain encoding rule, and specifically comprises the following steps:
for each tooth in the dentition, the tooth condition is encoded in the format of AA-B-C-DD, for each marker bit wherein: AA bit represents tooth position; b bit represents whether tooth exists, and 1/missing 0 exists; c bit represents the looseness; DD represents the tilt direction;
the denture repairing data format is that the denture repairing design scheme of the removable partial movable denture support is coded according to a certain coding rule, and specifically comprises the following steps:
encoding each denture restoration design according to the EE-F-G-HH format, wherein for each marker position: EE bit represents a tooth position; f bit represents whether a tooth exists or not, and 1/missing 0 exists; the G position represents the relation with the tooth missing position; the HH bit represents the clasp number.
2. The method for designing a denture repair plan based on data decision making as claimed in claim 1, further comprising a database updating step S5 of adding the current dentition condition data and the corresponding prepared tooth plan, and the finally determined denture repair plan as new case data into the denture repair plan database and updating the data, wherein the updated database can be used for next matching recommendation based on dentition data.
3. The method according to claim 1, wherein the step S2 is to detect some tooth position features of all teeth at present according to the setting requirements of the subsequent steps, so that the acquisition and analysis of other tooth position features and attribute parameters are performed only for the missing teeth in the subsequent steps.
4. The method for designing a data decision-based prosthetic appliance restoration scheme according to claim 1, wherein the step S3 comprises the following steps:
s3.1, generating current dentition condition data according to a preset dentition data format AA-B-C-DD, firstly analyzing AA and B positions of all dentitions, namely analyzing whether each tooth is missing or not, and preliminarily screening a snap ring scheme T1 suitable for the current missing dentition;
s3.2, further analyzing the C bit of the dentition condition data, namely analyzing the loosening condition of the teeth, and adjusting the preliminary clasp scheme T1 according to whether the teeth are loosened to obtain an adjusted clasp scheme T2;
and S3.3, further judging whether the tooth position inclines, analyzing the data of the DD position to judge whether the tooth inclines or not as the DD position represents the inclination direction, and readjusting the restoration scheme T2 according to whether the tooth inclines or not to obtain a readjusted snap ring scheme T3.
5. The method according to claim 4, wherein the step S3.1 specifically comprises:
s3.1.1, firstly, judging which missing tooth positions exist and judging the partition of a target tooth position;
when the B bit data is 0, the corresponding AA bit tooth is lost, and when the B bit data is 1, the corresponding AA bit tooth is not lost, so that all the lost tooth positions AA-0-X-X are identified and used as target tooth positions for further analysis;
s3.1.2, judging whether the missing tooth position belongs to a non-subclass;
when the AA position is X7 and the B position is 0, the tooth position deletion belongs to a non-subclass free deletion, and the specific category of the non-subclass free deletion needs to be further judged;
s3.1.3, further judging whether the missing tooth position belongs to a subclass;
and S3.1.4, if the missing tooth position is judged to belong to the subclass, further judging whether other problems occur and carrying out corresponding adjustment.
6. The method for designing a denture repair plan based on data decision making according to claim 1, wherein said step S4 specifically comprises:
s4.1, in order to meet various actual conditions, selecting and replacing replaceable snap rings of the determined preliminary snap ring scheme T3, determining replaceable alternative schemes, and obtaining an alternative scheme set T4;
s4.2, after the alternative schemes are analyzed and selected to obtain an alternative scheme T4, analyzing the stress of the corresponding support of each scheme;
and S4.3, after the selection of the alternative scheme and the analysis of the stress of the bracket are completed, obtaining a corresponding tooth preparation scheme T5, wherein the tooth preparation scheme T5 comprises the determined alternative scheme T4 and various restoration schemes obtained after the stress of the bracket is analyzed, and finally, comprehensive evaluation is carried out according to the current dentition data and the data of other tooth condition attribute parameters, and the final denture restoration scheme T is determined.
7. A data decision-based denture prosthesis design system implemented based on the denture prosthesis design method according to any one of the preceding claims, said system comprising:
the database construction module is used for establishing a dentition condition database based on a preset dentition data format and establishing an artificial tooth repair scheme database based on a preset artificial tooth repair data format; the denture repairing scheme database comprises a plurality of movable denture repairing design schemes corresponding to dentition data;
the dental condition data acquisition module is used for detecting the conditions of all the current teeth, acquiring the condition data of all the current teeth representing the position relationship between the upper teeth, the lower teeth, the left teeth and the right teeth, and acquiring the detected current dentition data, wherein the current dentition data are the current dental condition data generated according to a preset dentition data format and also comprise current tooth attribute parameters;
the data analysis module is used for sequentially analyzing the data of the zone bit of each tooth number according to the collected current dentition data, analyzing the corresponding matched optimal denture attribute according to the numerical value of each corresponding zone bit, and obtaining a preliminary denture restoration numbering scheme after all the zone bits are analyzed;
and the data adjusting module is used for further determining whether secondary data adjustment and scheme alternative are needed for the primary denture repair scheme obtained after the dentition data are analyzed, so that the final denture repair design scheme is obtained.
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| CN111700695B (en) * | 2020-05-25 | 2022-03-08 | 中国电信集团工会上海市委员会 | False tooth automatic design system and method |
| CN112133438B (en) | 2020-07-29 | 2022-05-06 | 南京前知智能科技有限公司 | Intraoral prosthesis design method based on big data |
| CN112089500B (en) * | 2020-09-17 | 2021-11-09 | 深圳云甲科技有限公司 | Denture alignment method, terminal and storage medium |
| CN113397742A (en) * | 2021-07-29 | 2021-09-17 | 维视医疗信息科技(山东)有限公司 | Automatic generation method and system for removable partial denture framework model |
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