CN111261287A - Planting scheme design method and system, terminal and computer-readable storage medium - Google Patents
Planting scheme design method and system, terminal and computer-readable storage medium Download PDFInfo
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Abstract
The invention belongs to the department of oral implantology, relates to the field of clinical research and supporting software of oral implantology, and discloses a method and a system for designing a planting scheme of a dentition-deficient patient by taking side appearance as guidance, a terminal and a computer-readable storage medium. The novel method for designing the dentition missing patient planting scheme utilizes preoperative estimation on side appearance aesthetics, so that the three-dimensional aesthetic effect of the patient after the completion of the denture is effectively predicted before the dentition missing planting operation, good preoperative communication with the patient and a scheme design concept starting from the beginning are guaranteed, and meanwhile, an automatic programming design method for the dentition missing patient planting scheme using the side appearance as a guide is established through preoperative intraoral scanning, facial scanning and cone beam CT fitting and leading-in.
Description
Technical Field
The invention belongs to the department of oral implantology, relates to the field of clinical research and supporting software of oral implantology, and discloses a method and a system for designing a planting scheme of a dentition-deficient patient by taking side appearance as guidance, a terminal and a computer-readable storage medium.
Background
Since the professor Branemark in sweden 1965 completed the first repair of dental implants worldwide and achieved good clinical results, modern oral implant technology has continued to mature and is called "the third human set of teeth". At present, dental implants are the best permanent repair method for tooth loss recognized by the oral medical community. For the patient without the dental jaw, the dental implant can restore the oral cavity function of the patient to a great extent, obviously improve the life quality of the patient and obtain good treatment effect, however, the alveolar ridges of the upper and lower jaws of the patient with the edentulous dentition can be atrophied, and the soft tissues connected with the alveolar ridges can be correspondingly changed. The lips and the cheeks are sunken due to the loss of soft and hard tissue support, and the face looks like an aging obviously. With the development of economy, the living standard of people is continuously improved, the requirement of a patient on the denture repairing effect is also continuously improved, the requirement only remains on the aspects of improving the retention stability and recovering the chewing function of the denture, and the attention is paid to the aspects of the beautiful appearance and the appearance after the denture is repaired. However, current research on the relationship between a full-mouth implant denture and a side appearance is relatively lacking.
Currently, there are research reports: the presence or absence of labial base, the thickness of the base, and the three-dimensional position and axial orientation of the maxillary incisors all contribute to the side appearance of soft tissues to varying degrees. At present, the estimation of the face shape of a patient after the implant is repaired mostly depends on the experience of a doctor and the trial wearing of a diagnosis wax pattern, the process is complicated and not accurate enough, and the chair-side time of the patient and the working time of the doctor are increased. The evaluation of the lateral appearance is beneficial to the selection of the clinical implantation repair mode for the full mouth edentulous patient.
The full-mouth edentulous jaw implantation repair comprises full-mouth implantation covering false tooth repair and full-mouth implantation fixing false tooth repair. The complete implant fixed denture is close to a natural tooth, is more comfortable and has higher chewing efficiency; and the complete implantation covering false tooth can increase the cheek-side fullness and provide better support for lips. Therefore, the method has the advantages of correctly selecting a restoration design scheme, reducing the wound, shortening the treatment period, reducing complications, reducing the economic burden of the patient, improving the restoration success rate, providing healthy, comfortable, beautiful and similar natural dentition for each edentulous jaw patient, and being the target pursued by the implanting doctor all the time. Therefore, creating an automated, programmatically designed, flank-oriented implant plan design approach for patients with missing dentitions is a struggle for researchers.
At present, a design method can be used for fitting through a projection side film, a cone beam CT, a patient picture and the like before a patient operation and evaluating the influence of an implantation position on the side appearance, however, ① has the following problems that a clinician cannot be helped to perform implantation scheme selection through data analysis ② and only the influence of an implantation fixing false tooth on the side appearance of the patient can be simulated, ③ cannot be used for designing a digital diagnosis false tooth and further performing chair-side evaluation through a 3D printing technology, and therefore, how to establish a design method which helps the clinician to perform implantation scheme selection through data analysis, can simulate the influence of covering and fixing the false tooth on the side appearance, and design software for digital diagnosis false tooth becomes a problem to be solved by the implantation scheme design method.
Disclosure of Invention
Aiming at the defects or shortcomings of the prior art, the invention aims to establish a method for designing a profile-oriented implantation scheme for a patient with dentition loss, and software can effectively predict the three-dimensional aesthetic effect of the finished denture of the patient before a dentition loss implantation operation by utilizing preoperative estimation on the profile, so as to ensure good preoperative communication with the patient and the scheme design concept from beginning to end.
In order to achieve the purpose, the invention adopts the following technical scheme.
A method for designing a flank-oriented implant plan for a patient with dentition loss comprises the following steps:
s100, obtaining a picture of a patient, jaw face CBCT data, a standard skull side slice of a head position, three-dimensional face scanning data and intraoral impression data before an operation;
s200, calibrating related marking points of the upper and lower jaw relation and upper and lower lip soft tissue marking points of a lateral plate by using a head shadow measuring method, and classifying the jaw relation and the lateral appearance of a patient;
s300, analyzing three-dimensional face scanning data of the natural head of the patient, measuring the volumes of the nasolabial sulcus, the genilabial sulcus and the nasozygomatic sulcus, and evaluating facial rejuvenation characteristics of the patient;
s400, selecting an implantation scheme according to analysis of the lateral skull slice and the three-dimensional surface scanning data, combining an anatomical structure, and selecting the type, the number and the position of the implant;
s500, fitting the CT data containing the jaw information of the patient and the intraoral impression data through soft tissue and residual tooth information, and performing digital tooth arrangement according to the bone information and the neutral zone of the patient;
s600, fitting the pre-tooth arrangement data and the three-dimensional surface scanning data, adjusting an occlusion plane, predicting the three-dimensional surface shape of a patient after restoration, measuring the volumes of a nasolabial sulcus, a genioglossus sulcus and a nasozygomatic sulcus, and classifying and evaluating the cleaning difficulty of a transition line angle;
and S700, finishing the printing of the diagnosis false tooth by using 3D printing equipment to obtain the diagnosis false tooth.
As a further improvement of the present invention, the patient picture comprises a front-view, a side-view, a smile-view; the CBCT data of the maxillofacial part is large visual field data in a DICOM format and contains temporomandibular joint information; the standard skull side tablet is in DICOM format; the three-dimensional area scanning data is in an STL format; the intraoral impression data is directly scanned orally or scanned in a post-impression cabin, and the data is in an STL format.
As a further improvement of the invention, the head shadow measuring method comprises the following specific steps:
calibrating A, an upper tooth socket point, N, a nasal root point and B: a lower tooth socket point, 2 degrees < ANB <5 degrees is in a neutral relation;
calibrating the E-line, wherein the distance from the upper lip salient point Ls to the E-line and the distance from the lower lip salient point Li to the E-line are calibrated; according to the national standard, the lower lip is positioned 1-3mm in front of the aesthetic plane and is positioned in front of the upper lip;
calibrating the nasolabial angle, which is the front-lower intersection angle of the connecting line of the most upper point Sn and the lipstick and the line tangent to the nasal bottom through Sn, wherein the normal nasolabial angle is 80-110 degrees;
calibrating a chin-lip angle which is an included angle formed among a forehead point, a chin-lip groove most concave point and a lower lip cutting edge point, wherein the normal chin-lip angle is 110-130 degrees;
and calibrating the face angle to be a back-lower intersection angle formed by two connecting lines from the forehead point to the under nose point and from the under nose point to the front point of the soft tissue chin, wherein the normal face angle is 7.3 +/-4.4 degrees.
As a further improvement of the invention, the digital tooth arrangement is realized by measuring the length and the width of a dental arch of a patient, preselecting dentition and finishing digital tooth arrangement according to a neutral zone biological concept; the digital tooth arrangement comprises the following steps:
(1) selecting the mesial-distal diameter of the tooth: measuring the distance from the center point of the maxilla of the patient to the incisal notch of the wing maxilla and the distance from the center point of the mandible to the front one third of the back cushion of the molar, and selecting teeth with different near and far middle diameters according to the length of the dental arch;
(2) selecting the shape of the tooth: selecting a sharp round, square round or oval tooth according to the surface shape of the patient;
(3) selecting the color of the tooth: selecting teeth with proper colors according to the picture of the patient;
(4) arranging upper and lower jaw teeth: the pre-formed dentition is used for completing the leading-in of the upper and lower jaw teeth;
(5) determining an upper and lower jaw closing plane by utilizing a CT (computed tomography) nasal alar and tragus line and a mouth corner line;
(6) and (3) measuring the protraction of the temporomandibular joint and the lateral condylar guidance inclination by using CT to finish the automatic adjustment of the protraction and the lateral occlusion.
As a further improvement of the invention, the data fitting is to fit the pre-arranged tooth data and the three-dimensional scan data, adjust the occlusion plane according to the standard plane of the face, adjust the thickness of the substrate, the three-dimensional position and the axial position of the anterior tooth, and predict the three-dimensional shape of the repaired patient.
As a further improvement of the invention, the transposition line is a perpendicular tangent line of the edge of the base plate for finally implanting and fixing the false tooth and the upper and lower jawbone, and the included angle of the transposition line at the positions of the middle incisor, the cuspid and the first molar is measured.
A profile-oriented implant planning system for a dentition loss patient, comprising:
the data acquisition module is used for acquiring a picture of a patient, jaw face CBCT data, a standard skull side slice, three-dimensional face scanning data and intraoral impression data before an operation.
And the analysis module of the standard skull side film is used for calibrating related marking points of the upper and lower jaw bone relations and upper and lower lip soft tissue marking points of the side film by using a cephalometric measurement technology, and classifying the jaw bone relations and the lateral appearances of the patients by using software.
The analysis module of the three-dimensional face-scanning data is used for analyzing the three-dimensional face-scanning data of the natural head of the patient and measuring the volumes of the nasolabial sulcus, the genioglossus sulcus and the nasozygomatic sulcus;
the selection and design module of the planting scheme is used for selecting the planting scheme according to analysis of the lateral skull slice and the three-dimensional surface scanning data, and selecting the type, the number and the position of the implant;
the digital tooth arrangement module is used for fitting the CT data containing the jaw information of the patient and the intraoral impression data through soft tissue and residual tooth information and finishing the arrangement of personalized digital artificial teeth and artificial gums according to the bone information and the neutral zone of the patient;
and the data fitting module is used for fitting the pre-arranged tooth data and the three-dimensional scan data, adjusting an occlusion plane, adjusting the thickness of the substrate, the three-dimensional position and the axial position of the anterior tooth, predicting the three-dimensional shape of the repaired patient, measuring the distance from the nasolabial angle, the chin labial angle, the face shape angle and the convex points of the upper lip and the lower lip to the line E, measuring the volumes of the nasolabial sulcus, the chin labial sulcus and the nasal zygomatic sulcus, and classifying the angle of the transitional line.
The printing module for diagnosing the false tooth is used for finishing printing of the diagnosed false tooth by using 3D printing equipment; and according to the condition that the diagnosis denture is worn in the mouth of the patient, evaluating the relationship between the lateral appearance and the jaw position again and determining the implantation scheme.
As a further improvement of the invention, the digital tooth arrangement module is used for pre-selecting tooth columns by measuring the length and the width of a dental arch of a patient, and completing digital tooth arrangement according to a neutral zone biological concept; the digital tooth arrangement comprises:
(1) selecting the mesial-distal diameter of the tooth: measuring the distance from the center point of the maxilla of the patient to the incisal notch of the wing maxilla and the distance from the center point of the mandible to the front one third of the back cushion of the molar, and selecting teeth with different near and far middle diameters according to the length of the dental arch;
(2) selecting the shape of the tooth: selecting a sharp round, square round or oval tooth according to the surface shape of the patient;
(3) selecting the color of the tooth: selecting teeth with proper colors according to the picture of the patient;
(4) arranging upper and lower jaw teeth: the pre-formed dentition is used for completing the leading-in of the upper and lower jaw teeth;
(5) determining an upper and lower jaw closing plane by utilizing a CT (computed tomography) nasal alar and tragus line and a mouth corner line;
(6) and (3) measuring the protraction of the temporomandibular joint and the lateral condylar guidance inclination by using CT to finish the automatic adjustment of the protraction and the lateral occlusion.
A terminal comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor when executing the computer program implementing the profile-oriented implant plan planning method for a dentition deficient patient.
A computer-readable storage medium storing a computer program which, when executed by a processor, causes the processor to perform the method for flank-oriented implant plan planning in a dentition deficient patient.
The invention has the following outstanding advantages:
the invention relates to a method for designing a planting scheme for a dentition-deficient patient by taking lateral appearance as a guide. The method for designing the dentition missing patient implantation scheme utilizes preoperative estimation on side appearance aesthetics, so that the three-dimensional aesthetic effect of the patient after the completion of the denture is effectively predicted before the dentition missing implantation operation, good preoperative communication with the patient and a scheme design concept starting from the end are guaranteed, and meanwhile, an automatic programmed implantation scheme design method for the dentition missing patient is established by preoperative intraoral scanning, facial scanning and cone beam CT fitting and leading-in. The concrete advantages are that:
firstly, fit tooth data and three-dimensional face scanning data in advance, adjust the occlusal plane according to facial standard plane, predict the three-dimensional shape of patient's restoration back, measure the volume of nasolabial sulcus, chin labial sulcus, nose cheekbone sulcus, assess patient's facial youthful characteristics to whether can assess the joining of lip base plate can obviously change patient's facial youthful characteristics, whether accord with facial aesthetic index, provide the basis for further formulating the scheme.
Secondly, the ANB is used for evaluating the relationship between the maxilla and the mandible of the patient in a classified mode, and the distance from the convex points of the upper lip and the lower lip to the E-line is further used for determining an implantation design scheme, so that a clinician can make a preoperative scheme.
Thirdly, the dentition is preselected through digital data, digital tooth arrangement is completed according to a neutral zone biological concept, and errors of artificial tooth arrangement are reduced.
And fourthly, the side appearance of the patient is used as the guide, the digital design is utilized, the interactive communication with the patient is convenient, and then the chair side is directly printed, so that the conversion from the virtual to the real is completed.
Fifthly, the digital tooth arrangement technology, the 3D printing technology and the mock-up technology are combined and applied, so that the existing procedures of manufacturing and trying on and diagnosing false teeth beside a clinician and a technician chair are replaced, and the clinical efficiency is improved.
Drawings
FIG. 1 is a schematic flow chart of the design method of the present invention;
FIG. 2 is a block diagram of a design system of the present invention;
FIG. 3 is a schematic view of a data acquisition process according to the present invention;
FIG. 4 is an analysis schematic of a standard cranial slice of the present invention;
FIG. 5 is a schematic diagram of the analysis of three-dimensional scan data according to the present invention;
FIG. 6 is a schematic view of the selection and design of a planting scheme of the present invention;
fig. 7 is a schematic view of a complete dental implant;
fig. 8 is a schematic view of a full-thickness implant denture;
FIG. 9 is a schematic diagram of a digital tooth arrangement in accordance with the present invention;
FIG. 10 is a schematic of data fitting according to the present invention;
FIG. 11 is a schematic diagram of a data fitting process of the present invention;
fig. 12 is a printed schematic of a diagnostic denture of the present invention.
Detailed Description
Example 1
As shown in FIG. 2, the present invention provides a profile-oriented implant planning system for a patient with dentition loss, comprising:
the data acquisition module is used for acquiring a picture of a patient, jaw face CBCT data, a standard skull side slice, three-dimensional face scanning data and intraoral impression data before an operation.
And the analysis module of the standard skull side film is used for calibrating related marking points of the upper and lower jaw bone relations and upper and lower lip soft tissue marking points of the side film by using a cephalometric measurement technology, and classifying the jaw bone relations and the lateral appearances of the patients by using software.
The analysis module of the three-dimensional face-scanning data is used for analyzing the three-dimensional face-scanning data of the natural head of the patient and measuring the volumes of the nasolabial sulcus, the genioglossus sulcus and the nasozygomatic sulcus;
the selection and design module of the planting scheme is used for selecting the planting scheme according to analysis of the lateral skull slice and the three-dimensional surface scanning data, and selecting the type, the number and the position of the implant;
the digital tooth arrangement module is used for fitting the CT data containing the jaw information of the patient and the intraoral impression data through soft tissue and residual tooth information and finishing the arrangement of personalized digital artificial teeth and artificial gums according to the bone information and the neutral zone of the patient;
and the data fitting module is used for fitting the pre-arranged tooth data and the three-dimensional scan data, adjusting an occlusion plane, adjusting the thickness of the substrate, the three-dimensional position and the axial position of the anterior tooth, predicting the three-dimensional shape of the repaired patient, measuring the distance from the nasolabial angle, the chin labial angle, the face shape angle and the convex points of the upper lip and the lower lip to the line E, measuring the volumes of the nasolabial sulcus, the chin labial sulcus and the nasal zygomatic sulcus, and classifying the angle of the transitional line.
And the printing module for diagnosing the false tooth is used for finishing the printing of the diagnosed false tooth by using the 3D printing equipment, evaluating the relation between the lateral appearance and the jaw position again according to the condition that the diagnosed false tooth is worn in the mouth of the patient, and determining the planting scheme.
Wherein, the adjustment of the thickness of the base plate, the three-dimensional and axial positions of the front teeth have the following advantages:
1) the beauty adjustment of the doctor and the patient can be realized, and the individuation is realized;
2) the side appearance of the image is embodied, and the manufacture of clinical false teeth is guided;
3) the function and the aesthetics are considered.
Example 2
As shown in fig. 1, 3 to 12, the present invention further provides a method for designing a flank-oriented implantation plan for a patient with dentition loss, comprising the following steps:
(1) and (3) acquiring data: the method comprises the steps of obtaining a picture of a patient before an operation, CBCT data of a maxillofacial region, a standard skull side film, three-dimensional face scanning data and intraoral impression data.
In the step (1), the data acquisition needs to acquire a patient picture, maxillofacial CBCT data, a standard skull side slice, three-dimensional face scanning data and intraoral impression data.
The patient photos comprise front photos, side photos and smile photos; the CBCT data of the maxillofacial part is large visual field data in a DICOM format and contains temporomandibular joint information; the standard skull side tablet is in DICOM format; the three-dimensional area scanning data is in an STL format; the intraoral impression data can be directly scanned orally or scanned behind a impression, and the data is in STL format.
(2) Analysis of standard cranial slice: marking points related to the relationship between the upper jaw and the lower jaw of the lateral plate and marking points of the soft tissues of the upper lip and the lower lip by using a head shadow measuring technology, and classifying the relationship between the jaws and the lateral appearance of the patient by using software.
And (2) analyzing the standard skull side film, calibrating soft and hard tissue marking points of the side film for evaluating the jaw relation and the side appearance of the patient by using a cephalometric measurement technology, and classifying the jaw relation and the side appearance of the patient by using software.
Using the technique of head-shadow measurement,
calibrating A, an upper tooth socket point, N, a nasal root point and B: a lower tooth socket point, 2 degrees < ANB <5 degrees is in a neutral relation;
calibrating the E-line, wherein the distance from the upper lip salient point Ls to the E-line and the distance from the lower lip salient point Li to the E-line are calibrated; according to the national standard, the lower lip is positioned 1-3mm in front of the aesthetic plane and is positioned in front of the upper lip;
calibrating the nasolabial angle, which is the front-lower intersection angle of the connecting line of the most upper point Sn and the lipstick and the line tangent to the nasal bottom through Sn, wherein the normal nasolabial angle is 80-110 degrees;
calibrating a chin-lip angle which is an included angle formed among a forehead point, a chin-lip groove most concave point and a lower lip cutting edge point, wherein the normal chin-lip angle is 110-130 degrees;
and calibrating the face angle to be a back-lower intersection angle formed by two connecting lines from the forehead point to the under nose point and from the under nose point to the front point of the soft tissue chin, wherein the normal face angle is 7.3 +/-4.4 degrees.
ANB is 5 degree for the relation of upper jaw protrusion and lower jaw retraction, ANB is 2 degree for the relation of underbite, and the planting design scheme is planting and covering false tooth. The 2 degree < ANB <5 degree is neutral relation, and the planting design scheme is planting fixed denture or planting covering denture. The nasolabial angle, E-line (line from the nasal cusp Prn to the anterior mental point Po), the distance from the upper labial convex point Ls to the E-line (Ls-line), and the distance from the lower labial convex point Li to the E-line (Li-line) are calibrated. If the measured value is more than 7mm away from the standard value, the implantation design scheme is to implant and cover the false tooth; if the measured value is less than 7mm away from the standard value, the planting design scheme is to plant a fixed denture.
(3) Analysis of three-dimensional area scan data: analyzing three-dimensional face scanning data of the natural head of the patient, and measuring the volumes of the nasolabial folds, the genilabial folds and the nasozygomatic folds;
in the analysis of the three-dimensional face scan data in the step (3), the volumes of the nasolabial sulcus, the genilabial sulcus and the nasozygomatic sulcus are accurately measured by using software, so that the facial youthfulness characteristics of the patient are objectively evaluated.
In the analysis of the three-dimensional face scan data, software is used for accurately measuring nasolabial folds, chin labial folds and nasozygomatic folds of facial rejuvenation features of a patient, and the volume is calculated by using a depth-length-width formula.
(4) Selection and design of a planting scheme: selecting a planting scheme according to analysis of the lateral skull slice and the three-dimensional surface scanning data, and selecting the type, the number and the position of the implant;
in the selection and design of the planting scheme in the step (4), the planting scheme is selected according to analysis of lateral skull slices and three-dimensional surface scanning data, and the type, number and position of the implant are selected by combining an anatomical structure.
Specifically, a planting scheme is selected according to analysis of a lateral skull tablet and three-dimensional surface scanning data; and selecting whether the base support is used or not according to the planting scheme, and designing the number, the types and the positions of the implants.
(5) Digital tooth arrangement: fitting the CT data containing the jaw information of the patient and the intraoral impression data through soft tissue and residual tooth information, and finishing the arrangement of personalized digital artificial teeth and artificial gums according to the bone information and the neutral zone of the patient;
and (5) digitally arranging teeth, pre-selecting dentition by measuring the length and the width of a dental arch of a patient, and finishing the digital tooth arrangement according to a neutral zone biological concept.
The digital tooth arrangement comprises the following steps:
(1) selecting the mesial-distal diameter of the tooth: measuring the distance from the center point of the maxilla of the patient to the incisal notch of the wing maxilla and the distance from the center point of the mandible to the front one third of the back cushion of the molar, and selecting teeth with different near and far middle diameters according to the length of the dental arch;
(2) selecting the shape of the tooth: selecting a sharp round, square round or oval tooth according to the surface shape of the patient;
(3) selecting the color of the tooth: the teeth with proper colors are selected according to the photo of the patient, such as A2\ A3\ B3.
(4) Arranging upper and lower jaw teeth: the pre-formed dentition is used for completing the leading-in of the upper and lower jaw teeth;
(5) and determining the upper and lower jaw closing plane by utilizing the CT nasal alar and tragus line and the mouth angle line.
(6) And (3) measuring the protraction of the temporomandibular joint and the lateral condylar guidance inclination by using CT to finish the automatic adjustment of the protraction and the lateral occlusion.
(6) And (3) fitting data: fitting the pre-tooth arrangement data and the three-dimensional surface scanning data, adjusting an occlusion plane, predicting the three-dimensional surface shape of the patient after restoration, measuring the volumes of the nasolabial sulcus, the genioglossus sulcus and the nasozygomatic sulcus, and classifying the transition line angle.
And (6) fitting data, fitting the pre-arranged tooth data and the three-dimensional face scanning data, adjusting an occlusion plane according to a standard plane of the face, predicting the three-dimensional face shape of the patient after repair, measuring the volumes of the nasolabial sulcus, the genioglossus sulcus and the nasozygomatic sulcus, and evaluating the facial youthful characteristics of the patient.
And (6) fitting data, wherein a migration line refers to a tangent line of the edge of the base plate for finally implanting the fixed denture and vertical tangential lines of the upper jaw and the lower jaw, measuring included angles of the migration line of the positions of the middle incisor, the cuspid and the first molar, and classifying and evaluating the angles of the migration line to be cleaned.
Fitting data, fitting the digital tooth arrangement into the face scan data, accurately measuring the facial youthful features of the patient, namely nasolabial sulcus, genioglial sulcus and nasozygomatic sulcus by using software, and calculating the volume and comparing with the tooth arrangement front by using a depth length width formula. It was evaluated whether the addition of the lip substrate could significantly alter the facial rejuvenation characteristics of the patient, meeting Eline line aesthetics.
(7) Printing of the diagnostic denture: and (3) finishing the printing of the diagnosis false tooth by using 3D printing equipment, putting the diagnosis false tooth into the mouth of a patient, evaluating the relationship between the lateral appearance and the jaw position again, and determining an implantation scheme.
And (7) printing the diagnosis denture, wherein after the digitally designed denture is communicated with the patient, the digitally designed denture can be directly printed beside the chair to be worn in the mouth of the patient to actually evaluate jaw position relation and side appearance, and the mock-up technology obtained in what you see is used.
And (3) performing data fitting diagnosis on false tooth printing, wherein the finished printed false tooth is photosensitive resin, the design precision is not lower than, and the printing precision is not lower than 50 um.
The invention relates to a side appearance-oriented implantation scheme design method, which comprises the steps of calibrating soft and hard tissue marking points of a side image for evaluating jaw bone relation and side appearance of a patient through the introduction of a patient picture, jaw face CBCT data, a standard head position cranium side image, three-dimensional surface scanning data and intraoral impression data, accurately measuring the volumes of a nasolabial sulcus, a chin labial sulcus and a nose zygomatic sulcus, carrying out digital tooth arrangement, fitting with the three-dimensional surface scanning data, adjusting an occlusion plane according to a face standard plane, predicting the three-dimensional surface shape of the repaired patient, and then printing and diagnosing false teeth by using a CAD/CAM technology and carrying out chair side evaluation. Therefore, after data collection and import are designed by the software, the three-dimensional shape of the repaired patient can be predicted, so that the purpose of predictability of the postoperative face of the patient before the operation is achieved.
The invention relates to a side appearance-oriented implantation scheme design method, which comprises the steps of calibrating a side piece to evaluate jaw bone relation and soft and hard tissue mark points of a patient through the introduction of a patient picture, jaw face CBCT data, a standard head position cranium side piece, three-dimensional face scanning data and intraoral impression data, accurately measuring the volumes of a nasolabial sulcus, a chin labial sulcus and a nose zygomatic sulcus, carrying out digital tooth arrangement, fitting with the three-dimensional face scanning data, adjusting an occlusal plane according to a face standard plane, predicting the three-dimensional face shape of the patient after restoration, and then printing and diagnosing false teeth by using a mock-up technology. Therefore, after data collection and import are designed by the software, the three-dimensional shape of the repaired patient can be predicted, so that the purpose of predictability of the postoperative face of the patient before the operation is achieved.
Example 3
The invention also provides a terminal, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the computer program to realize the method for designing the profile-oriented planting scheme of the dentition deficiency patient. The specific implementation method is shown in fig. 1 to 9.
Example 4
The present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, causes the processor to execute the method for flank-oriented implant plan planning in a dentition deficient patient.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and the invention is to be limited to the embodiments described above.
Claims (10)
1. A method for designing a profile-oriented implant plan for a patient with dentition loss, comprising the steps of:
s100, obtaining a picture of a patient, jaw face CBCT data, a standard skull side slice of a head position, three-dimensional face scanning data and intraoral impression data before an operation;
s200, calibrating related marking points of the upper and lower jaw relation and upper and lower lip soft tissue marking points of a lateral plate by using a head shadow measuring method, and classifying the jaw relation and the lateral appearance of a patient;
s300, analyzing three-dimensional face scanning data of the natural head of the patient, measuring the volumes of the nasolabial sulcus, the genilabial sulcus and the nasozygomatic sulcus, and evaluating facial rejuvenation characteristics of the patient;
s400, selecting an implantation scheme according to analysis of the lateral skull slice and the three-dimensional surface scanning data, combining an anatomical structure, and selecting the type, the number and the position of the implant;
s500, fitting the CT data containing the jaw information of the patient and the intraoral impression data through soft tissue and residual tooth information, and performing digital tooth arrangement according to the bone information and the neutral zone of the patient;
s600, fitting the pre-tooth arrangement data and the three-dimensional surface scanning data, adjusting an occlusion plane, predicting the three-dimensional surface shape of a patient after restoration, measuring the volumes of a nasolabial sulcus, a genioglossus sulcus and a nasozygomatic sulcus, and classifying and evaluating the cleaning difficulty of a transition line angle;
and S700, finishing the printing of the diagnosis false tooth by using 3D printing equipment to obtain the diagnosis false tooth.
2. The method of claim 1, wherein the patient's picture comprises a frontal photograph, a side photograph, a smiley photograph; the CBCT data of the maxillofacial part is large visual field data in a DICOM format and contains temporomandibular joint information; the standard skull side tablet is in DICOM format; the three-dimensional area scanning data is in an STL format; the intraoral impression data is directly scanned orally or scanned in a post-impression cabin, and the data is in an STL format.
3. The method for designing a flank-oriented implant plan for a patient with dentition deficiency as claimed in claim 1, wherein the head shadow measuring method comprises the following specific steps:
calibrating A, an upper tooth socket point, N, a nasal root point and B: a lower tooth socket point, 2 degrees < ANB <5 degrees is in a neutral relation;
calibrating the E-line, wherein the distance from the upper lip salient point Ls to the E-line and the distance from the lower lip salient point Li to the E-line are calibrated; according to the national standard, the lower lip is positioned 1-3mm in front of the aesthetic plane and is positioned in front of the upper lip;
calibrating the nasolabial angle, which is the front-lower intersection angle of the connecting line of the most upper point Sn and the lipstick and the line tangent to the nasal bottom through Sn, wherein the normal nasolabial angle is 80-110 degrees;
calibrating a chin-lip angle which is an included angle formed among a forehead point, a chin-lip groove most concave point and a lower lip cutting edge point, wherein the normal chin-lip angle is 110-130 degrees;
and calibrating the face angle to be a back-lower intersection angle formed by two connecting lines from the forehead point to the under nose point and from the under nose point to the front point of the soft tissue chin, wherein the normal face angle is 7.3 +/-4.4 degrees.
4. The method of claim 1, wherein the digital dentition is performed by measuring arch length and width of the patient, pre-selecting dentition, performing digital dentition according to neutral zone biology concepts; the digital tooth arrangement comprises the following steps:
(1) selecting the mesial-distal diameter of the tooth: measuring the distance from the center point of the maxilla of the patient to the incisal notch of the wing maxilla and the distance from the center point of the mandible to the front one third of the back cushion of the molar, and selecting teeth with different near and far middle diameters according to the length of the dental arch;
(2) selecting the shape of the tooth: selecting a sharp round, square round or oval tooth according to the surface shape of the patient;
(3) selecting the color of the tooth: selecting teeth with proper colors according to the picture of the patient;
(4) arranging upper and lower jaw teeth: the pre-formed dentition is used for completing the leading-in of the upper and lower jaw teeth;
(5) determining an upper and lower jaw closing plane by utilizing a CT (computed tomography) nasal alar and tragus line and a mouth corner line;
(6) and (3) measuring the protraction of the temporomandibular joint and the lateral condylar guidance inclination by using CT to finish the automatic adjustment of the protraction and the lateral occlusion.
5. The method of claim 1, wherein the data fitting is performed by fitting pre-tooth arrangement data to three-dimensional scan data, adjusting an occlusal plane according to a standard facial plane, adjusting a thickness of a base plate, three-dimensional positions of anterior teeth and axial positions, and predicting a three-dimensional shape of the patient after restoration.
6. The method of claim 1, wherein the implant line is a perpendicular tangent to the upper and lower jaws of the patient with dentition loss, and the angle between the implant line and the positions of the middle incisor, the cuspid and the first molar is measured.
7. A profile-oriented implant planning system for a deficient dentition patient, comprising:
the data acquisition module is used for acquiring a picture of a patient, jaw face CBCT data, a standard skull side slice, three-dimensional face scanning data and intraoral impression data before operation;
the analysis module of the standard skull side film is used for calibrating related marking points of the upper and lower jaw bone relations and upper and lower lip soft tissue marking points of the side film by using a cephalometric measurement technology, and classifying the jaw bone relations and side appearances of the patients by using software;
the analysis module of the three-dimensional face-scanning data is used for analyzing the three-dimensional face-scanning data of the natural head of the patient and measuring the volumes of the nasolabial sulcus, the genioglossus sulcus and the nasozygomatic sulcus;
the selection and design module of the planting scheme is used for selecting the planting scheme according to analysis of the lateral skull slice and the three-dimensional surface scanning data, and selecting the type, the number and the position of the implant;
the digital tooth arrangement module is used for fitting the CT data containing the jaw information of the patient and the intraoral impression data through soft tissue and residual tooth information and finishing the arrangement of personalized digital artificial teeth and artificial gums according to the bone information and the neutral zone of the patient;
the data fitting module is used for fitting the pre-arranged tooth data and the three-dimensional scan data, adjusting an occlusion plane, adjusting the thickness of a substrate, the three-dimensional position and the axial position of anterior teeth, predicting the three-dimensional shape of a repaired patient, measuring the distance from the nasolabial angle, the chin labial angle, the face shape angle and the convex points of the upper lip and the lower lip to the line E, measuring the volumes of the nasolabial sulcus, the chin labial sulcus and the nasal zygomatic sulcus, and classifying the angle of a transitional line;
the printing module for diagnosing the false tooth is used for finishing printing of the diagnosed false tooth by using 3D printing equipment; and according to the condition that the diagnosis denture is worn in the mouth of the patient, evaluating the relationship between the lateral appearance and the jaw position again and determining the implantation scheme.
8. The dentition deletion patient profile-oriented implant plan design system of claim 1 wherein the digital dentition module is configured to pre-select dentitions by measuring arch length and width of the patient, perform digital dentition according to neutral zone biology concepts; the digital tooth arrangement comprises:
(1) selecting the mesial-distal diameter of the tooth: measuring the distance from the center point of the maxilla of the patient to the incisal notch of the wing maxilla and the distance from the center point of the mandible to the front one third of the back cushion of the molar, and selecting teeth with different near and far middle diameters according to the length of the dental arch;
(2) selecting the shape of the tooth: selecting a sharp round, square round or oval tooth according to the surface shape of the patient;
(3) selecting the color of the tooth: selecting teeth with proper colors according to the picture of the patient;
(4) arranging upper and lower jaw teeth: the pre-formed dentition is used for completing the leading-in of the upper and lower jaw teeth;
(5) determining an upper and lower jaw closing plane by utilizing a CT (computed tomography) nasal alar and tragus line and a mouth corner line;
(6) and (3) measuring the protraction of the temporomandibular joint and the lateral condylar guidance inclination by using CT to finish the automatic adjustment of the protraction and the lateral occlusion.
9. A terminal comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program implements the method of profile-oriented implant plan design for a missing dentition patient according to any of claims 1 to 6.
10. A computer-readable storage medium, characterized in that it stores a computer program which, when executed by a processor, causes the processor to carry out the method of flank-oriented implant plan design for a dentition deficient patient according to any one of claims 1 to 6.
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| CN114596289A (en) * | 2022-03-11 | 2022-06-07 | 北京朗视仪器股份有限公司 | Mouth point detection method based on soft tissue contour line sampling points |
| CN114714626A (en) * | 2022-04-02 | 2022-07-08 | 北京大学口腔医学院 | Design method and device of denture 3D printing support and storage medium |
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| CN111768497A (en) * | 2020-06-29 | 2020-10-13 | 深圳大学 | Three-dimensional reconstruction method, device and system of head dynamic virtual model |
| CN111759506A (en) * | 2020-07-23 | 2020-10-13 | 茵伯特(上海)医疗技术有限公司 | Full-digital implant restoration method and system for implant |
| CN111759506B (en) * | 2020-07-23 | 2021-12-07 | 茵伯特(上海)医疗技术有限公司 | Full-digital implant restoration method and system for implant |
| CN112006795A (en) * | 2020-08-27 | 2020-12-01 | 爱迪特（秦皇岛）科技股份有限公司 | Denture impression determination method, denture making method, denture impression determination device, denture making equipment and denture making medium |
| CN114596289B (en) * | 2022-03-11 | 2022-11-22 | 北京朗视仪器股份有限公司 | Mouth point detection method based on soft tissue contour line sampling points |
| CN114596289A (en) * | 2022-03-11 | 2022-06-07 | 北京朗视仪器股份有限公司 | Mouth point detection method based on soft tissue contour line sampling points |
| CN114714626B (en) * | 2022-04-02 | 2023-08-15 | 北京大学口腔医学院 | Denture 3D printing bracket design method, denture 3D printing bracket design device and storable medium |
| CN114714626A (en) * | 2022-04-02 | 2022-07-08 | 北京大学口腔医学院 | Design method and device of denture 3D printing support and storage medium |
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| CN115054390B (en) * | 2022-07-20 | 2024-03-15 | 北京大学口腔医学院 | Personalized preparation method for guiding planting holes by torque model based on machine learning |
| CN116052890A (en) * | 2022-11-18 | 2023-05-02 | 江苏创英医疗器械有限公司 | Tooth implant three-dimensional scanning modeling system and method based on Internet of things |
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