WO2022235236A1 - Specification adjustable thrust test support mechanism - Google Patents

Specification adjustable thrust test support mechanism Download PDF

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Publication number
WO2022235236A1
WO2022235236A1 PCT/TR2022/050349 TR2022050349W WO2022235236A1 WO 2022235236 A1 WO2022235236 A1 WO 2022235236A1 TR 2022050349 W TR2022050349 W TR 2022050349W WO 2022235236 A1 WO2022235236 A1 WO 2022235236A1
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WO
WIPO (PCT)
Prior art keywords
platform
upper platform
test
arm
mentioned
Prior art date
Application number
PCT/TR2022/050349
Other languages
French (fr)
Inventor
Emre MUMCU
Canan AKAY
Original Assignee
Eski̇şehi̇r Osmangazi̇ Üni̇versi̇tesi̇
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from TR2021/007660 external-priority patent/TR2021007660A1/en
Application filed by Eski̇şehi̇r Osmangazi̇ Üni̇versi̇tesi̇ filed Critical Eski̇şehi̇r Osmangazi̇ Üni̇versi̇tesi̇
Publication of WO2022235236A1 publication Critical patent/WO2022235236A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating

Definitions

  • the presented invention relates to an adjustable thrust test support mechanism used to measure the strength of this material as a result of a force (variable) applied axially to the binder material placed on the dentin layer.
  • the thrust test is usually carried out to measure the resistance to decoupling-fracture between two surfaces under a constant load applied vertically to the material.
  • the purpose of this test is to compare the performance of the adhesive (adhesive) in a joint and to determine the strength and mechanical response of the connection between the two surfaces it is glued to.
  • the adhesion of dental materials with each other or with dental tissues occupies an important place in the success of dentistry.
  • Dental material and/or adhesives that will mostly be used in the natural tissue of the tooth and in the root canal; it is often used to determine the adhesion strength, reliability and repeatability.
  • Dental materials are used in many departments of dentistry, such as Prosthetic Dental Treatment, Restorative Dental, Pedodontics, Orthodontics, Endodontics.
  • dental materials used in dentistry the long-term success of the teeth remains in the mouth for a long time existing, and in enabling them to less removal of healthy tissue adhesive in conjunction with a new generation of dental materials in terms of preventive dentistry, root canal systems have been developed and implemented in the post.
  • New dental materials are being introduced to the market at a great speed with the transfer of rapidly developing technologies in computer-aided manufacturing and other fields to dentistry.
  • Thrust test methods are usually the most preferred test method in terms of ease of application, clarity, repeatability, comparison, and cost to measure the connection strength of post systems embedded in the root canal and simulate the pressure force it is exposed to in its natural position. In the link above, the thrust test assembly belonging to the application method of the thrust test is shown.
  • the geometric parameters of a material, the elastic modulus of dental hard tissues, the elastic modulus of dental materials affect the binding strength.
  • the resistance of the decontamination force between dental tissues and restorative material is a factor affecting the success of restorative material in the long term.
  • the cross-sectional area of the pin In the thrust test, the cross-sectional area of the pin, the size of the restorative material in the sample, the thickness of the cross-sectional area where the sample was taken from the dental tissue, and the type of material are important parameters that affect the connection strength.
  • the pin diameter should be less than 0.85 times the filler diameter, but not small enough to pierce the filler.
  • the thrust-bond force formula is suitable only for one sample.
  • the diameter of the pin should have a thickness of more than 0.6 times that of the restorative material.
  • the diameter and aspect ratio of the pin to the diameter of the thinned part should be limited if the diameter is too small and the length is too long, the pin will sprain and affect the test results.
  • the tooth diameter, filling and binding dimensions of the sample change.
  • a universal design is required to test samples of different outer diameter and filler diameter.
  • the upper and lower surfaces of the samples should be parallel to each other so that lateral force does not occur during the test.
  • US2010307259A1 describes the” Apparatus and method used to measure the tensile bond strength of dental material.
  • the dental material is placed in a mold and glued to the surface.
  • a force is applied by a device to separate the material in the mold from the surface, and the resistance to pull (tensile strength) shown by the material is measured and recorded.
  • the present invention has been created for the tensile test, not the thrust test.
  • the invention proposal was designed and created in order for the distance between the supports to support a circular and all-round sample, to test post and adhesive systems of different diameters and sizes in a standard way, and to determine the fracture modes more.
  • the main purpose of the system subject to the invention is to determine the extent to which the connector can withstand the axially applied feed motion.
  • the amount of decking of the dentin layer in other words, the distance between the supports, becomes important.
  • Our invention proposal is to enable standardized, repeatable and cross-sectional samples of different sizes and diameters to perform standardized thrust testing in thrust testing on root canal post systems and adhesive dental materials that will make lost natural teeth healthy and keep them in the mouth and use them as support, in order to minimize the margin of error.
  • the distance between the fulcrum clamp system with two dentine fields and the broken line is used as support unsupported circular in the examples occur around the reliability and accuracy of the test and will cause damage.
  • our system which is the subject of the invention, the placement of the sample and pin can be provided and fixed without the need for a vise mechanism.
  • Another advantage of our system which is the subject of the invention, is that it prevents the installation of different test devices for each sample. It is possible to place samples of different diameters with a single device. In addition, with the help of the ratched mechanism on it, time is saved during the placement of different samples by circular motion of the upper platform. Since there is no need for different test devices, the person also saves on costs.
  • the invention Due to the easy fixation of the parts forming the invention to each other, they are easy to install, and the labor cost is low due to the short assembly time.
  • the invention has a solid structure.
  • Figurel The subject of the invention is the top, front and perspective view of the system.
  • Figure2 A top, front and perspective view of the upper platform.
  • Figure3 A top, front and perspective view of the arm.
  • a lower platform (3) and pin (1), lower on the platform (3) to be centered attachable-detachable manner is positioned in the upper platform (4), the upper platform (4) is fixed on the arm (5) and the lower platform (3) of the upper platform (4) the relationship between providing and fixing screw (2).
  • the upper platform (4) mentioned in the invention is formed on the surface at an equal distance from the center point and contains at least one platform sample hole (4.2), each of which has a different diameter size.
  • the upper platform (4) referred to in the invention comprises a platform fixing hole (4.3) formed in its center.
  • the upper platform (4) mentioned in the invention has at least one serrated female part (4.1) formed on the outside of the geometric structure.
  • the arm (5) of the invention has a male part (5.1) located at the end so that it fits snugly on the toothed female part (4.1) with the arm fixing hole (5.2) created to be fixed on the lower platform (3).
  • the parts constituting the system subject to the invention are mainly pin (1), screw (2), lower platform (3), upper platform (4) and lever (5).
  • the upper platform (4) includes the serrated female part (4.1), the platform sample hole (4.2) and the platform fixing hole (4.3) parts. It has the male part (5.1) and the arm fixing hole (5.2) parts on the arm (5).
  • Figure 1 shows an image of the subject system of the invention.
  • the upper platform (4) can be rotated by loosening the screw (2) on the lower platform (3).
  • the reason that each of the platform sample holes (4.2) on the upper platform (4) has a different diameter is that it provides the possibility of bearing for different sizes of the sample (N) that will come on it.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

This invention is a binding material which is placed over the dentin layer of the force applied axially (variable) that is used to measure the resistance of this material results in order to test the platform and the property is related to the mechanism adjustable push support lower support (3), pin (1), and lower platform (3) to be centered attachable- detachable manner is positioned in the upper platform (4), the upper platform (4) is fixed on the arm (5) and the lower platform (3) of the upper platform (4) the relationship between providing and fixing screw (2) that is has.

Description

ADJUSTABLE THRUST TEST SUPPORT MECHANISM
Technical Field:
The presented invention relates to an adjustable thrust test support mechanism used to measure the strength of this material as a result of a force (variable) applied axially to the binder material placed on the dentin layer.
State of the Art:
The thrust test is usually carried out to measure the resistance to decoupling-fracture between two surfaces under a constant load applied vertically to the material. The purpose of this test is to compare the performance of the adhesive (adhesive) in a joint and to determine the strength and mechanical response of the connection between the two surfaces it is glued to. The adhesion of dental materials with each other or with dental tissues occupies an important place in the success of dentistry. Dental material and/or adhesives that will mostly be used in the natural tissue of the tooth and in the root canal; it is often used to determine the adhesion strength, reliability and repeatability.
Dental materials are used in many departments of dentistry, such as Prosthetic Dental Treatment, Restorative Dentistry, Pedodontics, Orthodontics, Endodontics. Of dental materials used in dentistry the long-term success of the teeth remains in the mouth for a long time existing, and in enabling them to less removal of healthy tissue adhesive in conjunction with a new generation of dental materials in terms of preventive dentistry, root canal systems have been developed and implemented in the post. New dental materials are being introduced to the market at a great speed with the transfer of rapidly developing technologies in computer-aided manufacturing and other fields to dentistry.
The test methods by which the bond strength of new materials is evaluated are limited. Thrust test methods are usually the most preferred test method in terms of ease of application, clarity, repeatability, comparison, and cost to measure the connection strength of post systems embedded in the root canal and simulate the pressure force it is exposed to in its natural position.
Figure imgf000003_0001
In the link above, the thrust test assembly belonging to the application method of the thrust test is shown. https://www.google.com/search?q=push+out+test&sxsrf=ALeKk01cQiEG0ztqu95cnFJ OmKcNoZA9fg: 161969581459 l&source=lnms&tbm=isch&sa=X&ved=2ahUKEwj axb CNraPwAhVm-
SoKHZT4C_MQ_AUoAXoECAEQAw&biw=1920&bih=969#imgrc=IlvWgl815K5PU
M
In the link above, the sample diagrams used in the thrust test are shown.
The geometric parameters of a material, the elastic modulus of dental hard tissues, the elastic modulus of dental materials affect the binding strength. The resistance of the decontamination force between dental tissues and restorative material is a factor affecting the success of restorative material in the long term.
In the current literature review, when looking at the results of the studies in which the thrust test strength was evaluated, a discrepancy is observed between the force values obtained. It is thought that the numerical differences in the results are due to the fact that the pin thickness, head speed, and sample diameter present in the experimental setup are the same, but the difference that occurs is due to the fact that the experimental support setup is not standard. For this reason, the present invention proposal is based on an experimental support device that can make it standard for each different sample and sample diameter.
In the thrust test, the cross-sectional area of the pin, the size of the restorative material in the sample, the thickness of the cross-sectional area where the sample was taken from the dental tissue, and the type of material are important parameters that affect the connection strength.
In order to achieve standardization in the experimental setup and to obtain consistent results;
• The pin diameter should be less than 0.85 times the filler diameter, but not small enough to pierce the filler.
• The thrust-bond force formula is suitable only for one sample. The diameter of the pin should have a thickness of more than 0.6 times that of the restorative material.
• The diameter and aspect ratio of the pin to the diameter of the thinned part should be limited if the diameter is too small and the length is too long, the pin will sprain and affect the test results.
• An assembly is needed that allows holding different hole diameters.
• It needs to be fixed so that lateral force does not occur.
As it descends from the upper part of the tooth to the lower part, the tooth diameter, filling and binding dimensions of the sample change. In this case, a universal design is required to test samples of different outer diameter and filler diameter. Again, the upper and lower surfaces of the samples should be parallel to each other so that lateral force does not occur during the test.
In existing systems, the distance between the vise system and the two supports is used as a support, and this will decimate the reliability and accuracy of the test by causing unsupported dentin areas to be in the circular samples and causing the fracture line to form in these areas (https://www.youtube.com/watch?v=2L00v2r7CwQ). Another result that is often looked at in thrust tests is the localization of fracture modes. A fracture line will usually occur at points where there are no supports, and this will cause doubt in determining the line.
The patent application numbered US2010307259A1 describes the” Apparatus and method used to measure the tensile bond strength of dental material". According to the present invention, the dental material is placed in a mold and glued to the surface. A force is applied by a device to separate the material in the mold from the surface, and the resistance to pull (tensile strength) shown by the material is measured and recorded. The present invention has been created for the tensile test, not the thrust test.
In order to eliminate all the disadvantages listed above and to create a standard repeatable measurement, the invention proposal was designed and created in order for the distance between the supports to support a circular and all-round sample, to test post and adhesive systems of different diameters and sizes in a standard way, and to determine the fracture modes more.
Description of the Invention:
The main purpose of the system subject to the invention is to determine the extent to which the connector can withstand the axially applied feed motion. Here, the amount of decking of the dentin layer, in other words, the distance between the supports, becomes important.
Our invention proposal is to enable standardized, repeatable and cross-sectional samples of different sizes and diameters to perform standardized thrust testing in thrust testing on root canal post systems and adhesive dental materials that will make lost natural teeth healthy and keep them in the mouth and use them as support, in order to minimize the margin of error. In the current system, the distance between the fulcrum clamp system with two dentine fields and the broken line is used as support unsupported circular in the examples occur around the reliability and accuracy of the test and will cause damage. In our system, which is the subject of the invention, the placement of the sample and pin can be provided and fixed without the need for a vise mechanism.
Another advantage of our system, which is the subject of the invention, is that it prevents the installation of different test devices for each sample. It is possible to place samples of different diameters with a single device. In addition, with the help of the ratched mechanism on it, time is saved during the placement of different samples by circular motion of the upper platform. Since there is no need for different test devices, the person also saves on costs.
Due to the easy fixation of the parts forming the invention to each other, they are easy to install, and the labor cost is low due to the short assembly time. In addition, the invention has a solid structure.
Description of the Figures:
The invention will be described with reference to the accompanying figures, so that the features of the invention will be more clearly understood and appreciated, but the purpose of this is not to limit the invention to these certain regulations. On the contrary, it is intended to cover all alternatives, changes and equivalences that can be included in the area of the invention defined by the accompanying claims. The details shown should be understood that they are shown only for the purpose of describing the preferred embodiments of the present invention and are presented in order to provide the most convenient and easily understandable description of both the shaping of methods and the rules and conceptual features of the invention. In these drawings;
Figurel The subject of the invention is the top, front and perspective view of the system.
Figure2 A top, front and perspective view of the upper platform. Figure3 A top, front and perspective view of the arm.
The figures to help understand the present invention are numbered as indicated in the attached image and are given below along with their names.
Description of References:
1. Pin
2. Screw
3. Lower platform
4. Upper platform
4.1 Upper Serrated female part
4.2 Platform sample hole
4.3 Platform fixing hole
5. Arm
5.1 The male part
5.2 Arm fixing hole
N. Sample
Description of the Invention:
The invention, a lower platform (3) and pin (1), lower on the platform (3) to be centered attachable-detachable manner is positioned in the upper platform (4), the upper platform (4) is fixed on the arm (5) and the lower platform (3) of the upper platform (4) the relationship between providing and fixing screw (2).
The upper platform (4) mentioned in the invention is formed on the surface at an equal distance from the center point and contains at least one platform sample hole (4.2), each of which has a different diameter size. The upper platform (4) referred to in the invention comprises a platform fixing hole (4.3) formed in its center. The upper platform (4) mentioned in the invention has at least one serrated female part (4.1) formed on the outside of the geometric structure. The arm (5) of the invention has a male part (5.1) located at the end so that it fits snugly on the toothed female part (4.1) with the arm fixing hole (5.2) created to be fixed on the lower platform (3).
Detailed Description of The Invention:
The parts constituting the system subject to the invention are mainly pin (1), screw (2), lower platform (3), upper platform (4) and lever (5). The upper platform (4) includes the serrated female part (4.1), the platform sample hole (4.2) and the platform fixing hole (4.3) parts. It has the male part (5.1) and the arm fixing hole (5.2) parts on the arm (5).
Figure 1 shows an image of the subject system of the invention. The upper platform (4) can be rotated by loosening the screw (2) on the lower platform (3). The reason that each of the platform sample holes (4.2) on the upper platform (4) has a different diameter is that it provides the possibility of bearing for different sizes of the sample (N) that will come on it.
In order to obtain the correct result from the test and to decouple the bonding connection, a certain distance must be found between the test pin (1) and the lower platform (3). Since pin (1) will always act on the system from the same angular position, the lever (5), which is stretched by a spring to center the hole exactly at each time, sits on the serrated female part (4.1) on the upper platform (4). This process is for positioning purposes. After the positioning is achieved, the position is fixed by tightening the screw (2) in the middle and the pin (1) is ready to start the test after it is placed in the appropriate position. The rear part of the lower platform (3) can be designed to fit the test unit.

Claims

1- The invention is an adjustable thrust test support mechanism, the feature of which is; a lower platform (3) and pin (1), it can be installed so that it is centered on the lower platform (3)-the upper platform (4), which is removable. arm (5) fixed on the upper platform (4), a screw (2) that provides fastening connection between the lower platform (3) and the upper platform (4).
2- As mentioned in Claim 1, the upper platform (4) is characterized by the fact that it has at least one platform sample hole (4.2), which is formed on the surface at an equal distance from the center point and each has a different diameter size.
3- As mentioned in Claim 1, the upper platform (4) is characterized by the fact that it has a platform fixing hole (4.3) formed in its center.
4- As mentioned in Claim 1, the upper platform (4) is characterized by the fact that it has at least one serrated female part (4.1), which is formed on the outside of the geometric structure.
5- As mentioned in Claim 1, it is a arm (5), and its feature is that it is characterized by the fact that it has a arm fixing hole (5.2), which was created to fix it on the lower platform
(3)·
6- As mentioned in Claim 1. it is a arm (5), and its feature is that it is characterized by having a male part (5.1) located at the end so that the serrated female part (4.1) fits snugly on it.
PCT/TR2022/050349 2021-05-05 2022-04-20 Specification adjustable thrust test support mechanism WO2022235236A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2021/007660 TR2021007660A1 (en) 2021-05-05 ADJUSTABLE PUSH TEST SUPPORT MECHANISM
TR202107660 2021-05-05

Publications (1)

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WO2022235236A1 true WO2022235236A1 (en) 2022-11-10

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140033820A1 (en) * 2011-04-22 2014-02-06 Kyocera Medical Corporation Strength proof test method and device to be used therein
CN107796695B (en) * 2017-10-17 2019-08-30 首都医科大学附属北京世纪坛医院 For biomaterial tensile test fixture and grip method
RU2704208C1 (en) * 2018-12-18 2019-10-24 Федеральное государственное бюджетное образовательное учреждение высшего образования "Пермский государственный медицинский университет имени академика Е.А. Вагнера" Министерства здравоохранения Российской Федерации Device for in-vitro cyclic dental testing for axial compression

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140033820A1 (en) * 2011-04-22 2014-02-06 Kyocera Medical Corporation Strength proof test method and device to be used therein
CN107796695B (en) * 2017-10-17 2019-08-30 首都医科大学附属北京世纪坛医院 For biomaterial tensile test fixture and grip method
RU2704208C1 (en) * 2018-12-18 2019-10-24 Федеральное государственное бюджетное образовательное учреждение высшего образования "Пермский государственный медицинский университет имени академика Е.А. Вагнера" Министерства здравоохранения Российской Федерации Device for in-vitro cyclic dental testing for axial compression

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