CN108132185B - Experiment platform and experiment method for detecting performance of personalized dental implant - Google Patents
Experiment platform and experiment method for detecting performance of personalized dental implant Download PDFInfo
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- CN108132185B CN108132185B CN201810168104.1A CN201810168104A CN108132185B CN 108132185 B CN108132185 B CN 108132185B CN 201810168104 A CN201810168104 A CN 201810168104A CN 108132185 B CN108132185 B CN 108132185B
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Abstract
The application discloses an experimental platform for detecting the performance of personalized dental implants, which comprises a platform frame, wherein an alveolar bone clamp, a simulated load loading mechanism, a torque sensor, a tension sensor and a resonance frequency analyzer are arranged on the platform frame. Also provided is a method of using the above experimental platform, comprising: acquiring various relevant parameters; manufacturing an implant model and an alveolar bone model according to the acquired parameters, and combining the implant model and the alveolar bone model into a whole; and installing the alveolar bone model into an alveolar bone clamp of a fixed experimental platform for detection. According to the experimental method disclosed by the application, the specific key parameters of the user are collected, a highly simulated personalized experimental platform is established, and the performance of the personalized dental implant in the real oral environment of the specific patient is detected in a targeted manner through a personalized experiment. Thereby making the measured data more valuable as a reference. The experimental platform has the advantages of compact structure, stable operation and simple operation.
Description
Technical Field
The application relates to the technical field of dental implant detection equipment.
Background
With the advent of 3D technology, the structural design of dental implants is no longer limited by traditional machining fabrication. In order to seek the optimal mechanical and biomechanical properties of the dental implant, the design concept of the personalized dental implant is sequentially proposed. However, the conventional performance detection method is not completely suitable for personalized dental implants, because the standard single conventional performance detection method cannot meet the detection requirements of different individual differences, and the result obtained by the experiment is not convincing.
Disclosure of Invention
Aiming at the defects, the application provides an experimental platform for detecting the performance of the personalized dental implant.
The utility model provides an experimental platform for individualized tooth implant performance detects, includes the platform frame, be equipped with alveolar bone anchor clamps and simulation load loading mechanism on the platform frame, the alveolar bone anchor clamps include the backup pad to and be located the fixture in the backup pad, fixture includes two parallels and stands in opposite directions in the spud pile in the backup pad side by side, the spud pile is equipped with the screw hole, fixture still includes the screw rod with screw hole looks adaptation, and the grip block that is located the screw rod tip, simulation load loading mechanism comprises portal frame, loading arm, linear electric motor, load sensor, loading contact, the portal frame is fixed in on the platform frame, portal frame upper portion is equipped with the slide rail, loading arm and slide rail sliding connection, and hang in the portal frame, the loading arm is straight-bar form, is equipped with the linear electric motor who follows loading arm oscilaltion it, linear electric motor's output has the loading contact, loading contact end has the load sensor of control linear electric motor motion.
Further, a layer of elastic rubber member is attached to the surface of the load sensor.
Further, the clamping block is provided with a right-angle contact end, and a layer of elastic rubber member is attached to the inner side surface of the contact end.
Further, the portal frame comprises two vertical beams perpendicular to the platform frame and a horizontal beam parallel to the platform frame, two threaded holes for screwing in screws to fix the simulated load loading mechanism on the platform frame are designed at the bottom of the vertical beam, and the horizontal beam is perpendicular to the vertical beam and fixedly connected through welding.
The application also provides a method for using the experimental platform, which comprises the following steps:
1) Scanning an alveolar bone at a tooth deficiency position, acquiring data such as cortical bone thickness of the alveolar bone, positions and forms of adjacent teeth and opposite teeth at the tooth deficiency position, and determining morphological structure parameters of an alveolar bone model and an implant model; simultaneously, measuring the biting force of normal healthy adjacent teeth at the tooth missing position through a pressure film sensor, taking an average value as the biting force at the tooth missing position, acquiring parameters of the biting surface and the angle of the biting force, recording the chewing times per minute, and finally obtaining an average value x;
2) 3D printing at least two dental implant models through a selective laser melting technology according to the parameters obtained in the step 1, manufacturing an alveolar bone model through the selective laser melting technology and a digital light processing technology, and combining the dental implant model and the alveolar bone model into a whole through alpha-cyanoacrylate B;
3) Installing and fixing an alveolar bone model in the alveolar bone fixture of the experimental platform for detecting the performance of the personalized dental implant, adjusting the angle of a loading arm aiming at a first dental implant model to enable the biting force angle to be consistent with the measured value in the step 1, fully contacting a loading contact with the surface of a dental crown of the dental implant model, and fixing the loading arm; adjusting a control threshold value of the load sensor to be a biting force, and setting the reciprocating frequency of the motor to be 10950 times of x;
4) Measuring the stability coefficient of the implant model by using a resonance frequency analyzer, then starting a linear motor to perform a simulated chewing experiment, measuring the stability coefficient of the implant model by using the resonance frequency analyzer again, and simultaneously measuring a torque peak value which enables the implant to have larger apparent mobility by using a torque sensor;
5) Repeating the simulated chewing experiment aiming at the other implant model, measuring the stability coefficient at the same time, and then measuring the pulling force which enables the implant model to be separated from the alveolar bone model or generate larger obvious movement by using a pulling force sensor;
6) Taking out the dental implant, observing whether the dental implant has cracks or not through a microscope, and comprehensively evaluating the mechanical properties of the dental implant by comparing indexes such as the sizes of the cracks.
The alveolar bone model is composed of a cortical bone model and a cancellous bone model, wherein the cortical bone model is prepared by a selective laser melting technology through using secondary commercial pure titanium powder, the cancellous bone model is prepared by a digital light processing technology through using liquid photosensitive resin for 3D printing, then the cancellous bone model is further solidified through ultraviolet light irradiation, and finally the cancellous bone model and the cortical bone model are adhered together through alpha-ethyl cyanoacrylate to form the alveolar bone model. The Young modulus of the cortical bone model and the cancellous bone model is adjusted by a method of adjusting the porosity, and the thickness of the cortical bone model is equal to the average thickness of the cortical bone at the tooth deficiency position. The liquid photosensitive resin includes an epoxy acrylic resin oligomer.
According to the experimental method disclosed by the application, the specific key parameters of the user are collected, a highly simulated personalized experimental platform is established, and the performance of the personalized dental implant in the real oral environment of the specific patient is detected in a targeted manner through a personalized experiment. Thereby making the measured data more valuable as a reference. The stability coefficient is combined with the comparison method of the implant extraction force peak value and the loosening torque peak value to evaluate the loosening and falling resistance capability of the implant, so that the biomechanical property of the implant can be comprehensively and specifically evaluated. The performance evaluation of the implant can be comprehensively detected by combining the biomechanical performance with the mechanical performance detection. The experimental platform has the advantages of compact structure, stable operation and simple operation.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings described are only some embodiments of the application, but not all embodiments, and that other arrangements and drawings can be obtained from these drawings by a person skilled in the art without inventive effort.
FIG. 1 is an assembly diagram of the experimental platform for personalized dental implant performance detection;
FIG. 2 is a side view of the alveolar bone fixture;
fig. 3 is a front view of the simulated load loading mechanism.
Detailed Description
The conception, specific structure, and technical effects produced by the present application will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present application. It is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present application. In addition, all coupling/connection relationships mentioned herein do not refer to direct connection of the components, but rather, refer to the fact that a more optimal coupling structure may be formed by adding or subtracting coupling aids depending on the particular implementation. The technical features in the application can be interactively combined on the premise of no contradiction and conflict.
As shown in fig. 1 to 3, an experimental platform for detecting performance of a personalized dental implant comprises a platform frame 1, wherein an alveolar bone fixture 2, a simulated load loading mechanism 3, a torque sensor, a tension sensor and a resonance frequency analyzer are arranged on the platform frame 1, the alveolar bone fixture 2 comprises a supporting plate 21 and a clamping mechanism positioned on the supporting plate 21, the clamping mechanism comprises two parallel fixing piles 22 which are vertically arranged on the supporting plate 21 in opposite directions, the fixing piles 22 are provided with threaded holes, the clamping mechanism further comprises a screw rod 23 matched with the threaded holes, and a clamping block 24 positioned at the end part of the screw rod 23, the simulated load loading mechanism 3 comprises a portal frame 31, a loading arm 32, a linear motor 33, a load sensor and a loading contact 34, the portal frame 31 is fixed on the platform frame 1, a slide rail is arranged on the upper part of the portal frame 31, the loading arm 32 is in sliding connection with the slide rail, the loading arm 32 is in a straight rod shape, the loading arm 32 is provided with a linear motor contact 33 which is vertically lifted along the loading arm 32, and the output end of the linear motor contact 33 is provided with a linear load sensor 34, and the load sensor 34 is provided with a linear motion control end 33.
As a further preferable embodiment, a layer of elastic rubber member is attached to the surface of the load cell.
As a further preferable embodiment, the clamping block 24 has a right-angle contact end, and a layer of elastic rubber member is attached to an inner side surface of the contact end.
As a further preferred embodiment, the portal frame 31 is composed of two vertical beams perpendicular to the platform frame 1 and two horizontal beams parallel to the platform frame 1, the bottom of the vertical beams is designed with two threaded holes 311 for screwing in screws to fix the simulated load loading mechanism on the platform frame, and the horizontal beams are perpendicular to the vertical beams and fixedly connected by welding.
The experimental method of the platform comprises the following steps:
1) Scanning an alveolar bone at a tooth deficiency position, acquiring data such as cortical bone thickness of the alveolar bone, positions and forms of adjacent teeth and opposite teeth at the tooth deficiency position, and determining morphological structure parameters of an alveolar bone model and an implant model; simultaneously, measuring the biting force of normal healthy adjacent teeth at the tooth missing position through a pressure film sensor, taking an average value as the biting force at the tooth missing position, acquiring parameters of the biting surface and the angle of the biting force, recording the chewing times per minute, and finally obtaining an average value x;
2) 3D printing at least two dental implant models through a selective laser melting technology according to the parameters obtained in the step 1, manufacturing an alveolar bone model through the selective laser melting technology and a digital light processing technology, and combining the dental implant model and the alveolar bone model into a whole through alpha-cyanoacrylate B;
3) Installing and fixing an alveolar bone model in the alveolar bone fixture of the experimental platform for detecting the performance of the personalized dental implant, adjusting the angle of a loading arm aiming at a first dental implant model to enable the biting force angle to be consistent with the measured value in the step 1, fully contacting a loading contact with the surface of a dental crown of the dental implant model, and fixing the loading arm; adjusting a control threshold value of the load sensor to be a biting force, and setting the reciprocating frequency of the motor to be 10950 times of x;
4) Measuring the stability coefficient of the implant model by using a resonance frequency analyzer, then starting a linear motor to perform a simulated chewing experiment, measuring the stability coefficient of the implant model by using the resonance frequency analyzer again, and simultaneously measuring a torque peak value which enables the implant to have larger apparent mobility by using a torque sensor;
5) Repeating the simulated chewing experiment aiming at the other implant model, measuring the stability coefficient at the same time, and then measuring the pulling force which enables the implant model to be separated from the alveolar bone model or generate larger obvious movement by using a pulling force sensor;
6) Taking out the dental implant, observing whether the dental implant has cracks or not through a microscope, and comprehensively evaluating the mechanical properties of the dental implant by comparing indexes such as the sizes of the cracks.
The alveolar bone model is composed of a cortical bone model and a cancellous bone model, wherein the cortical bone model is prepared by a selective laser melting technology through using secondary commercial pure titanium powder, the cancellous bone model is prepared by a digital light processing technology through using liquid photosensitive resin for 3D printing, then the cancellous bone model is further solidified through ultraviolet light irradiation, and finally the cancellous bone model and the cortical bone model are adhered together through alpha-ethyl cyanoacrylate to form the alveolar bone model. The Young modulus of the cortical bone model and the cancellous bone model is adjusted by a method of adjusting the porosity, and the thickness of the cortical bone model is equal to the average thickness of the cortical bone at the tooth deficiency position. The liquid photosensitive resin includes an epoxy acrylic resin oligomer.
While the preferred embodiment of the present application has been described in detail, the application is not limited to the embodiments, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the application, and these modifications and substitutions are intended to be included in the scope of the present application as defined in the appended claims.
Claims (7)
1. An experimental method for detecting the performance of a personalized dental implant, which is characterized by comprising the following steps:
1) Scanning an alveolar bone at a tooth deficiency position, acquiring cortical bone thickness of the alveolar bone, positions and morphological data of adjacent teeth and opposite teeth at the tooth deficiency position, and determining morphological structure parameters of an alveolar bone model and an implant model; simultaneously, measuring the biting force of normal healthy adjacent teeth at the tooth missing position through a pressure film sensor, taking an average value as the biting force at the tooth missing position, acquiring parameters of the biting surface and the angle of the biting force, recording the chewing times per minute, and finally obtaining an average value x;
2) 3D printing at least two dental implant models through a selective laser melting technology according to the parameters obtained in the step 1, manufacturing an alveolar bone model through the selective laser melting technology and a digital light processing technology, and combining the dental implant model and the alveolar bone model into a whole through alpha-ethyl cyanoacrylate;
3) The method comprises the steps that an alveolar bone model is installed and fixed in an alveolar bone clamp of an experimental platform for detecting the performance of an individualized dental implant, the experimental platform for detecting the performance of the individualized dental implant comprises a platform frame, the platform frame is provided with the alveolar bone clamp and a simulated load loading mechanism, the alveolar bone clamp comprises a supporting plate and a clamping mechanism positioned on the supporting plate, the clamping mechanism comprises two parallel fixing piles which are vertically arranged on the supporting plate in opposite side by side, the fixing piles are provided with threaded holes, the clamping mechanism also comprises a screw rod which is matched with the threaded holes, and a clamping block positioned at the end part of the screw rod, the simulated load loading mechanism comprises a portal frame, a loading arm, a linear motor, a load sensor and a loading contact, the portal frame is fixed on the platform frame, the upper part of the portal frame is provided with a sliding rail, the loading arm is in sliding connection with the sliding rail and is suspended in the portal frame, the loading arm is in a straight rod shape, the upper and lower lifting linear motor along the loading arm is arranged on the loading arm, the output end of the linear motor is provided with a loading contact, the loading contact is provided with a load sensor which controls the linear motor to move, and the loading contact is arranged at the tail end of the loading contact, and the loading contact is fully contacted with the implantation model, and the loading dental implant is enabled to be in accordance with the step 1, and the loading dental implant is made to be in the angle, and the dental implant is fully contacted with the surface of the loading model; adjusting a control threshold of the load sensor to be a biting force, and setting the reciprocating frequency of the motor to be 10950 times of x;
4) Measuring the stability coefficient of the implant model by using a resonance frequency analyzer, then starting a linear motor to perform a simulated chewing experiment, measuring the stability coefficient of the implant model by using the resonance frequency analyzer again, and simultaneously measuring a torque peak value which enables the implant to have larger apparent mobility by using a torque sensor;
5) Repeating the simulated chewing experiment aiming at the other implant model, measuring the stability coefficient at the same time, and then measuring the pulling force which enables the implant model to be separated from the alveolar bone model or generate larger obvious movement by using a pulling force sensor;
6) Taking out the dental implant, observing whether the dental implant has cracks or not through a microscope, and comprehensively evaluating the mechanical properties of the dental implant by comparing the crack size indexes.
2. The method of claim 1, wherein a layer of elastic rubber member is attached to a surface of the load cell.
3. The method according to claim 1, wherein the clamping block has a right angle contact end, and a layer of elastic rubber member is attached to an inner side surface of the contact end.
4. The experimental method according to claim 1, wherein the portal frame is composed of two vertical beams perpendicular to the platform frame and two horizontal beams parallel to the platform frame, the bottom of the vertical beams is designed with two threaded holes for screwing in screws to fix the simulated load loading mechanism on the platform frame, and the horizontal beams are perpendicular to the vertical beams and fixedly connected by welding.
5. Experimental method according to claim 1, characterized in that the alveolar bone model consists of a cortical bone model and a cancellous bone model, the cortical bone model is prepared by a selective laser melting technique using a two-stage commercial pure titanium powder, the cancellous bone model is prepared by a digital light processing technique using a liquid photosensitive resin 3D printing, which is then further cured by ultraviolet light irradiation, and finally the cancellous bone model and the cortical bone model are bonded together by means of ethyl α -cyanoacrylate to form the alveolar bone model.
6. The method according to claim 5, wherein the cortical bone model and the cancellous bone model are adjusted for young's modulus by adjusting the porosity, and wherein the thickness of the cortical bone model is equal to the average thickness of the cortical bone at the edentulous site.
7. The method of claim 5, wherein the liquid photosensitive resin comprises an epoxy acrylic resin oligomer.
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| CN109187181A (en) * | 2018-08-21 | 2019-01-11 | 西北有色金属研究院 | Bone tissue-metal implant complex in-situ mechanical test device and method |
| CN109498193A (en) * | 2018-11-30 | 2019-03-22 | 首都医科大学附属北京口腔医院 | A kind of dentistry implant and its with synosteosis performance verification method |
| CN111487146B (en) * | 2020-04-23 | 2021-06-15 | 黄玉梅 | Automatic testing device for dynamic fatigue of dental implant |
| CN112964460A (en) * | 2021-03-29 | 2021-06-15 | 华南理工大学 | System and method for monitoring loosening of dental implant repair screw |
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