WO2021007272A1 - Dental radiograph imaging device and the use thereof - Google Patents

Dental radiograph imaging device and the use thereof Download PDF

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Publication number
WO2021007272A1
WO2021007272A1 PCT/US2020/041109 US2020041109W WO2021007272A1 WO 2021007272 A1 WO2021007272 A1 WO 2021007272A1 US 2020041109 W US2020041109 W US 2020041109W WO 2021007272 A1 WO2021007272 A1 WO 2021007272A1
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WO
WIPO (PCT)
Prior art keywords
positioning
imaging device
teeth
film
dental
Prior art date
Application number
PCT/US2020/041109
Other languages
French (fr)
Inventor
Kai-yuan KAO
Po-Yuan Chang
Nai-Yun TUNG
Hwa-Chang Wang
Chun-Lu TSAI
Shih-Kai Wang
Original Assignee
National Taiwan University
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
Application filed by National Taiwan University filed Critical National Taiwan University
Publication of WO2021007272A1 publication Critical patent/WO2021007272A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
    • A61B6/51—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for dentistry
    • A61B6/512—Intraoral means
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B42/00—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means
    • G03B42/02—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means using X-rays
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B42/00—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means
    • G03B42/02—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means using X-rays
    • G03B42/04—Holders for X-ray films
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B42/00—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means
    • G03B42/02—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means using X-rays
    • G03B42/04—Holders for X-ray films
    • G03B42/042—Holders for X-ray films for dental applications

Definitions

  • the present invention relates to a dental radiograph imaging device and the use thereof, and more particularly to a dental radiograph imaging device for dental radiograph imaging and a method of using the dental radiograph imaging device to simultaneously reduce discomfort and improve dental photography accuracy.
  • the method to take tooth or tooth root X-ray images can be divided into panoramic radiograph and periapical radiograph, wherein the panoramic radiograph is to perform X-ray photography around the patient's oral cavity after the patient is positioned.
  • the panoramic radiograph is to perform X-ray photography around the patient's oral cavity after the patient is positioned.
  • periapical radiograph would usually be chosen.
  • Periapical radiograph system directly covers a display film (also called a direct digital image digitizer) for displaying the results of X-ray irradiation with a protective case, and puts it directly into the position of the local teeth to be photographed in the patient's mouth, and is controlled by the dentist, medical staff or the patients’ themselves by finger pressing for positioning.
  • a display film also called a direct digital image digitizer
  • an auxiliary device is used to clamp and engage the X-ray film to position it.
  • the current method of taking X-ray film of tooth apex is to use an X-ray film holder, which includes a positioning frame and a clamping portion. The positioning frame and the clamping portion are connected through a base. The X-ray film is clamped to the clamping portion, and the clamping portion is placed in the patient's mouth, and then the patient opens the mouth and firmly fixes the holder of the X-ray film with the teeth. Finally, the lens is placed on the positioning frame to fix the angle of the X-ray machine to capture images.
  • one objective of the present invention is to provide a dental radiograph imaging device, comprising: a film holder formed a hollow frame having a frontal opening and connected to a positioning movable element; and a biting plate formed an arc-shaped occlusal portion, wherein a left end and a right end of the arc-shaped occlusal portion respectively extend to cover left and right posterior teeth, and a side edge of the left end of the arc-shaped occlusal portion extends to form a left holding wall, and a side edge of the right end of the arc-shaped occlusal portion extends to form a right holding wall, and the left holding wall and the right holding wall respectively have a positioning fixing element configured to fix the positioning movable element of the film holder.
  • an anterior edge of a middle end of the arc-shaped occlusal portion extends a frontal holding piece to fix and position the biting plate on the teeth.
  • Another objective of the present invention is to provide a dental radiograph imaging device, comprising: a film holder formed a hollow frame having a frontal opening and connected to a positioning movable element; and a biting plate formed a flake-shaped occlusal portion, wherein the flake-shaped occlusal portion covers at least the width of four incisors; a rear edge of the flake-shaped occlusal portion extends to form a holding wall; and the holding wall have a positioning fixing element configured to fix on the positioning movable element of the film holder.
  • an anterior edge of the flake-shaped occlusal portion extends a holding piece to fix and position the biting plate on the teeth.
  • the positioning movable element is a positioning column
  • the positioning fixing element is a positioning hole
  • the positioning movable element is a positioning sliding block
  • the positioning fixing element is a positioning slide rail
  • the hollow frame of the film holder is used for placing an imaging film and/or a sensor film.
  • the other objective of the present invention is to provide a method of utilizing the dental radiograph imaging device according to claim 1 for capturing a dental image of a tooth of a user, comprising: placing an imaging film and/or a sensor film in the film holder; assembling the film holder with the biting plate and adjusting angle and/or position thereof; mounting and fixing the dental radiograph imaging device on the user's teeth; and capturing the image of the tooth.
  • the user bites the arc-shaped occlusal portion or the flake- shaped occlusal portion with the upper and lower teeth to fix the occlusal holding device on the user's teeth.
  • an angle between the positioning fixing element and the positioning movable element is adjustable.
  • the dental radiograph imaging device of the present invention and the method for capturing an image of a tooth of a user by the dental radiograph imaging device solve many problems encountered by users and operators in the clinical examination of dental X-ray photography.
  • the dental radiograph imaging device of the present invention can be applied to the occlusal surfaces of the user's rear and central teeth respectively, so it is only necessary for the user to easily bite the biting plate, the biting plate would be fixed in the correct position on the user's teeth for subsequent correct correspondence with the position of the tooth or the tooth root to be photographed.
  • the film holder can be freely adjusted in position with the positioning movable element in the positioning fixing element of the biting plate, thus allowing the operator to easily adjust the position of the X-ray film on the tooth or the tooth root to be photographed.
  • the angle or position between the hollow frame and the positioning movable element can be adjusted to provide the operator with the flexibility to adjust the position of the X-ray film according to different users' oral cavity, occlusion and other structures, so that there is no need to fix the position of the X-ray film by finger pressing or opening the mouth for biting and can reduce the chances of displacement of X-ray film.
  • the dental radiograph imaging device of the present invention when using the dental radiograph imaging device of the present invention to capture an image of a tooth of a user, it is not necessary to bite on a hard item and the mouth can be completely closed, so that the space in the oral cavity is wide, and could reduce the foreign body sensation in the oral cavity, and can improve the comfort of use, and effectively reduce the problems of vomiting and drooling; furthermore, the dental radiograph imaging device of the present invention and the use thereof can improve the fixation of the X-ray film at the correct shooting position to reduce the number of times to adjust the position of the X-ray film and to repeat shooting, and the positioning method of the present invention is intuitive and easy to operate, and can be easily used without experienced novices; therefore, the dental radiograph imaging device of the present invention and the use thereof can improve the progress of the clinical examination of dental X-ray photography, and save more time and improve efficiency.
  • FIG. 1 schematically illustrates the dental radiograph imaging device with respect to posterior teeth of one embodiment of the present invention.
  • FIG. 2 schematically illustrates the film holder of one embodiment of the present invention.
  • FIG. 3 schematically illustrates the biting plate for posterior teeth of one embodiment of the present invention.
  • FIG. 4A schematically illustrates the dental radiograph imaging device for upper posterior teeth of one embodiment of the present invention.
  • FIG. 4B schematically illustrates the dental radiograph imaging device for lower posterior teeth of one embodiment of the present invention.
  • FIG. 5 schematically illustrates the biting plate for anterior teeth of one embodiment of the present invention.
  • FIG. 6A schematically illustrates the dental radiograph imaging device for lower anterior teeth and the film holder of one embodiment of the present invention.
  • FIG. 6B schematically illustrates the dental radiograph imaging device for upper anterior teeth of one embodiment of the present invention.
  • FIG. 7A schematically illustrates the biting plate for upper posterior teeth of one embodiment of the present invention.
  • FIG. 7B schematically illustrates the biting plate for lower posterior teeth of one embodiment of the present invention.
  • FIG. 7C schematically illustrates the film holder of one embodiment of the present invention.
  • the numerical values used herein are approximate values, and all numerical values are expressed within a range of 20%, preferably within a range of 10%, and most preferably within a range of 5%.
  • the dental radiograph imaging device of the present invention could be made up of materials that are penetrable by X-ray or other light that is commonly used in the art, and the materials are preferably soft, flexible, and elastic.
  • the material could be medical materials such as silicone, plastic, rubber, rayon, and so on.
  • the "vertical placement” described herein refers to placing the long side of the film holder of the present invention or the film along the long axis of the user's teeth; and the “horizontal placement” described herein refers to placing the long side of the film holder of the present invention or the film perpendicular to the long axis of the user's teeth.
  • the dental radiograph imaging device of the present invention is utilized to capture a dental image of a tooth and/or a tooth root of a user.
  • the method of utilizing the dental radiograph imaging device comprises: placing an imaging film and/or a sensor film in the film holder, and then assembling the film holder with the biting plate and adjusting angle and/or position thereof, and then mounting and fixing the dental radiograph imaging device on the user's teeth, and then capturing the image of the tooth.
  • Those with ordinary skill in the art can arbitrarily change, replace, add, and/or delete any steps in the method.
  • the dental radiograph imaging device of the present invention used for posterior teeth
  • the illustration shows the dental radiograph imaging device 10, which is one embodiment of present invention for posterior teeth.
  • the dental radiograph imaging device 10 of the present invention comprises a film holder 11 and a biting plate 12, wherein the film holder 11 is used for placing an imaging film and/or a sensor film, and assembled with the biting plate 12 for posterior teeth
  • the way to capture the image of specific position for the user can be simpler and more accurate, especially the improvement of users' comfort.
  • FIG. 2 schematically illustrates the film holder 11 of one embodiment of the present invention.
  • the film holder 11 is formed a hollow frame 111, which have a frontal opening 1111, and connected to a positioning movable element 112.
  • the positioning fixing element 122 of biting plate 12 is to position the positioning movable element 112.
  • FIG. 3 schematically illustrates the biting plate 12 for posterior teeth of one embodiment of the present invention
  • the biting plate 12 is formed a soft arc-shaped occlusal portion 121, and a left end and a right end of the arc-shaped occlusal portion 121 respectively extend to cover the left and right molars of the user, and a side edge of the left end of the arc-shaped occlusal portion 121 extends to form a left holding wall 1212 and a side edge of the right end of the arc-shaped occlusal portion 121 extends to form a right holding wall 1213, and the left holding 1212 wall and the right holding wall 1213 respectively have a positioning fixing element 122 and 123; wherein the positioning fixing element 122 and 123 of the biting plate 12 is configured to fix the positioning movable element 112 of the film holder 11.
  • the positioning movable 112 can be used to adjust the angle between the film holder 11 and the arc-shaped occlusal portion 121 of the biting plate 12.
  • an anterior edge of a middle end of the arc-shaped occlusal portion 121 extends a frontal holding piece 1214 to fix and position the biting plate 12 on the tooth.
  • between the biting plate 12 and the occlusal surface of the user's teeth further comprises an anti-slip structure 124 to increase the friction between the biting plate 12 and the user's teeth, and reduce the displacement of the biting plate 12; wherein the anti- slip structure 124 includes, but not limited to, a zigzag structure or a wave shape structure.
  • the positioning fixing element 122 and 123 is a positioning slide rail
  • the positioning movable element 112 is a positioning sliding block; wherein the positioning slide rails are respectively located on the opposite side of the left holding 1212 wall and the right holding wall 1213, and the length of the positioning rail includes, but not limited to, the distance from the user's first premolars to the second molar.
  • the shape of the positioning rail can be changed, for example, in the embodiments of the present invention, a linear slide rail structure with a narrow opening side is used, and when the user raises the muscles at the mouth floor for biting, the upper and lower grooves in the slide rail can resist the force that causes the film holder 11 and the biting plate 12 to lift up and down, so that when the positioning sliding block and the positioning sliding rail are combined together, it is less likely to fall off.
  • the biting plate 12 of the dental radiograph imaging device 10 of the present invention can be used for the upper posterior teeth and the lower posterior teeth according to the use position; and depending on the user, it can be used for adults, and children, the following detailed description of these methods of use.
  • the biting plate 12 is used for the upper posterior teeth of adults and/or children; wherein the length of the longitudinal axis of the arc-shaped occlusal portion 121 is the user's central incisor/deciduous central incisor end to the posterior edge of the hard palate, and the width of the horizontal axis of the arc-shaped occlusal portion 121 is calculated by the formula of ⁇ A cos Q, wherein A is the mesiodistal dimension of a single upper posterior teeth/upper posterior deciduous teeth, and Q is the angle between the mesiodistal dimension and the horizontal line; furthermore, the width of the middle end of the arc-shaped occlusal portion 121 is the average distance between the user’s upper and lower tooth cutting ends, and the width between the left end and the right end is the bite width of the user's upper and lower molars.
  • the biting plate 12 of the present invention can be made to a customized size according to a specific user and can also be made to a generally standardized size according to the ordinary skill in the art, for example: the size of different individual teeth is not very different but the width and front and back diameters of the overall dental arch are more obviously different.
  • the biting plate 12 can be made into at least three sizes of S, M, and L, wherein the arc-shaped occlusal portion 121 of adult size L could be, but not limited to, longitudinal axis length 65 mm and horizontal axis width 80 mm, adult size M could be, but not limited to, longitudinal axis length 60 mm and horizontal axis width 75 mm, and adult size S could be, but not limited to, the longitudinal axis length 55 mm and the horizontal axis width 70 mm.
  • FIG. 4A schematically illustrates the dental radiograph imaging device 10 for upper posterior teeth of one embodiment of the present invention.
  • the dental radiograph imaging device 10 of the present invention is used to capture the image of the teeth of the user’s upper posterior teeth, and the methods and steps are as described above.
  • the angle between the user’s hard palate bones and occlusal surface of the upper posterior teeth the angle between the film holder 11 and the biting plate 12 can be adjusted appropriately; wherein preferably the angle is 120 degrees.
  • the relative position between the film holder 11 and the biting plate 12 can also be adjusted appropriately according to the position of the specific tooth and/or tooth root image to be taken. Taking the tooth root commonly used in the art of the present invention as an example, splitting in the center line of the user's upper teeth, using the adult size 2 film (e.g. Value Pak, Adult, Size 2, 1-1/4" x 1-5/8" (Pack of
  • the adult size 2 film e.g. Value Pak, Adult, Size 2, 1-1/4" x 1-5/8"
  • the biting plate 12 is used for the lower posterior teeth of adults and/or children; wherein the length of the longitudinal axis of the arc-shaped occlusal portion 121 is the user's central incisor/deciduous central incisor end to the posterior edge of molar/second deciduous molar, and the width of the horizontal axis of the arc-shaped occlusal portion 121 is calculated by the formula of ⁇ A cos Q, wherein A is the mesiodistal dimension of a single upper posterior teeth/upper posterior deciduous teeth, and Q is the angle between the mesiodistal dimension and the horizontal line; furthermore, the width of the middle end of the arc-shaped occlusal portion 121 is the average distance between the user’s upper and lower tooth cutting ends, and the width between the left end and the right end is the occluding width of the user's upper and lower molars.
  • the biting plate 12 of the present invention can also be made into at least three sizes of S, M, and L, wherein the arc-shaped occlusal portion 121 of adult size L includes, but not limited to, longitudinal axis length 65 mm and horizontal axis width 77 mm, adult size M includes, but not limited to, longitudinal axis length 60 mm and horizontal axis width 72 mm, and adult size S includes, but not limited to, the longitudinal axis length 55 mm and the horizontal axis width 67 mm.
  • FIG. 4B which schematically illustrates the dental radiograph imaging device 10 for lower posterior teeth of one embodiment of the present invention.
  • the dental radiograph imaging device 10 of the present invention is used to capture the image of the teeth of the user’s lower posterior teeth, and the methods and steps are as described above.
  • the angle between the film holder 11 and the biting plate 12 can be adjusted appropriately; wherein preferably the angle is 90 degrees.
  • the relative position between the film holder 11 and the biting plate 12 can also be adjusted appropriately according to the position of the specific tooth and/or tooth root image to be taken.
  • the dental radiograph imaging device of the present invention used for anterior teeth
  • FIG. 5 schematically illustrates the biting plate for anterior teeth of one embodiment of the present invention.
  • the biting plate 13 forms a soft flake-shaped occlusal portion 131, wherein the flake-shaped occlusal portion 131 covers at least the width of four incisors, and a rear edge of the flake-shaped occlusal portion 131 extends a holding wall 1311, and the holding wall 131 have a positioning fixing element 132 which is used to fix on the positioning movable element 112 of the film holder 11.
  • an anterior edge of the flake-shaped occlusal portion 131 extends a frontal holding piece 1312 to fix and position the biting plate 13 on the tooth.
  • between the biting plate 13 and the occlusal surface of the user's teeth further comprises an anti-slip structure 133 to increase the friction between the biting plate 13 and the user's teeth, and reduce the displacement of the biting plate 13; wherein the anti- slip structure 133 includes, but not limited to, a zigzag structure or a wave shape structure.
  • the other rear edge of the flake-shaped occlusal portion 131 extends a retaining section 1313 to increase the occluding contact surface, so that the biting plate 13 can be placed more firmly on the user's anterior teeth area.
  • the biting plate 13 of the present invention can be made to a customized size according to a specific user and can also be made to a generally standardized size according to the ordinary skill in the art; wherein the length of the longitudinal axis of the flake-shaped occlusal portion 131 is preferably ⁇ 2 cm of the horizontal distance between the upper and lower teeth of the user, and the width of the horizontal axis of the flake-shaped occlusal portion 131 is the length from the user’s right canine (i.e. the third tooth to the right from the midline) to the left canine projected on the horizontal line.
  • the length from the frontal end of the flake-shaped occlusal portion 131 to the retaining section 1313 is the vertical distance from the user's median incisor incisal end to the proximal side of the first premolars.
  • the upper teeth are usually on the outside and the lower teeth are usually on the inside, and the distance between them is ideally about 2 mm, so the flake-shaped occlusal portion 131 can, but not limited to, increase by 2 mm outward or inward, in order to respond to the dentition or the difference between the maxilla and the mandible bone of some users, so that allowing the biting plate 13 of the present invention to have more space for the user's upper and lower anterior teeth to bite on the flake-shaped occlusal portion 131.
  • the positioning fixing element 132 of the biting plate 13 is a positioning slide rail
  • the positioning movable element 112 of the film holder 11 is a positioning sliding block; wherein, the positioning slide rail is located on the holding wall 1311, and the length of the positioning slide rail is the range that should be covered by the dental image that can meet the clinical use requirements in the technical field of the present invention. For example, the distance from the cut end of the user’ s upper teeth to the end of the root can be referred.
  • the shape of the positioning rail can be changed, for example, in the embodiments of the present invention, a linear slide rail structure with a narrow opening side is used, and when the user raises the muscles at the mouth floor for biting, the upper and lower grooves in the slide rail can resist the force that causes the film holder 11 and the biting plate 13 to lift up and down, so that when the positioning sliding block and the positioning sliding rail are combined together, it is less likely to fall off.
  • the biting plate 13 of the dental radiograph imaging device 10 of the present invention can be used for the upper anterior teeth and the lower anterior teeth according to the position; and the following detailed description of these methods of use.
  • FIG. 6A schematically illustrates the dental radiograph imaging device 10 for upper anterior teeth of one embodiment of the present invention.
  • the dental radiograph imaging device 10 of the present invention is used to capture the image of the teeth of the user’s upper anterior teeth, and the methods and steps are as described above.
  • the angle between the user’s hard palate bones and occlusal surface of the upper anterior teeth the angle between the flake-shaped occlusal portion 131 and the holding wall 1311 of the biting plate 13 can be adjusted appropriately; wherein the angle is preferably the angle between the axial direction of the user's upper anterior teeth and the hard palate bone plus 90 degrees.
  • the relative position and the angle between the film holder 11 and the biting plate 13 can also be adjusted appropriately according to the position of the specific tooth image to be taken; wherein the angle is preferably 90 degrees.
  • position the film vertically for capturing the image can cover the range from bilateral central incisors to canine, and even the first premolar.
  • FIG. 6B which is the abridged general view of the spatial structure of the dental radiograph imaging device 10 for lower anterior teeth of one embodiment of the present invention.
  • the dental radiograph imaging device 10 of the present invention is used to capture the image of the teeth of the user’ s lower anterior teeth, and the methods and steps are as described above.
  • the angle between the flake-shaped occlusal portion 131 and the holding wall 1311 of the biting plate 13 can be adjusted appropriately; wherein the angle is preferably the angle between the axial direction of the user's lower anterior and the alveolar crest 90 degrees.
  • the relative position and the angle between the film holder 11 and the biting plate 13 can also be adjusted appropriately according to the position of the specific tooth image to be taken; wherein the angle is preferably 90 degrees.
  • the other dental radiograph imaging device of the present invention used for posterior teeth
  • the positioning movable element is a positioning column 151
  • the positioning fixing element is a positioning hole 141, as shown in FIGs. 7A to 7C, on opposite sides of the left holding wall and the right holding of the biting plate 14, there are a plurality of positioning holes 141 respectively, and there is a plurality of positioning column 151 on the film holder 15.
  • the positioning column 151 and the positioning holes 141 are a complementary structure like card tenon, which can combine the film holder 15 and the biting plate 14 with each other, wherein the positioning holes 141 are at least in the upper and lower rows and/or the left and right rows, so that the position of the film holder 15 can be adjusted up and down and/or left and right to the specific position of the tooth to be taken dental radiograph.
  • the distribution and number of the positioning column 151 and the positioning holes 141 can be changed according to ordinary skill in the art of the present invention.
  • the film holder 15 can include three positioning columns 151, and each of the positioning column 151 could be at equal intervals and arranged on the same horizontal line.
  • each row could contain four positioning holes 141, and could include at least two rows of positioning holes 141 on different horizontal lines.
  • the dental radiograph imaging device 10 of the present invention and the method for capturing an image of a tooth of a user by the dental radiograph imaging device 10 solve many problems encountered by users and operators in the clinical examination of dental X-ray photography.
  • the dental radiograph imaging device 10 of the present invention can be applied to the occlusal surfaces of the user's rear and central teeth respectively, so it is only necessary for the user to easily bite the biting plate, the biting plate would be fixed in the correct position on the user's teeth for subsequent correct correspondence with the position of the tooth or the tooth root to be photographed.
  • the film holder can be freely adjusted in position with the positioning movable element in the positioning fixing element of the biting plate, thus allowing the operator to easily adjust the position of the X-ray film on the tooth or the tooth root to be photographed.
  • the angle or position between the hollow frame and the positioning movable element can be adjusted to provide the operator with the flexibility to adjust the position of the X-ray film according to different users' oral cavity, occlusion and other structures, so that there is no need to fix the position of the X-ray film by finger pressing or opening the mouth for biting and can reduce the chances of displacement of X-ray film.
  • the dental radiograph imaging device 10 of the present invention when using the dental radiograph imaging device 10 of the present invention to capture an image of a tooth of a user, it is not necessary to bite on a hard item and the mouth can be completely closed, so that the space in the oral cavity is wide, and could reduce the foreign body sensation in the oral cavity, and can improve the comfort of use, and effectively reduce the problems of vomiting and drooling; furthermore, the dental radiograph imaging device 10 of the present invention and the use thereof can improve the fixation of the X-ray film at the correct shooting position to reduce the number of times to adjust the position of the X-ray film and to repeat shooting, and the positioning method of the present invention is intuitive and easy to operate, and can be easily used without experienced novices; therefore, the dental radiograph imaging device 10 of the present invention and the use thereof can improve the progress of the clinical examination of dental X-ray photography, and save more time and improve efficiency.

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Abstract

The present invention provides a dental radiograph imaging device and a use thereof; wherein, the dental radiograph imaging device comprises a film holder for placing photosensitive film and a biting plate holding the occlusal surface of a user's teeth. Besides, the position of the film holder on the biting plate can be flexibly adjusted, so it is possible to easily adjust and accurately position the position of the photosensitive film on the tooth to be photographed. Therefore, the dental radiograph imaging device of the present invention can simultaneously reduce discomfort during use and improve the accuracy of capturing images.

Description

DENTAL RADIOGRAPH IMAGING DEVICE AND THE USE
THEREOF
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims priority of US provisional application No. 62/871,291, filed on July 08, 2019, the content of which are incorporated herein in its entirety by reference.
BACKGROUND OF THE INVENTION
1. Field of the Invention
[0002] The present invention relates to a dental radiograph imaging device and the use thereof, and more particularly to a dental radiograph imaging device for dental radiograph imaging and a method of using the dental radiograph imaging device to simultaneously reduce discomfort and improve dental photography accuracy.
2. The Prior Art
[0003] When people visit the dental clinic or dental department in the hospital for the initial diagnosis of the teeth in the oral cavity, routine inspections, or even abnormal examinations of discomfort, etc., they are usually requested and brought by the dentist or assisted medical staff to a safe isolated room or space equipped with professional digital X-ray equipment to take X-ray images of oral cavity or entire dentition, so that dentists can understand the occlusion, growth status, and relative distribution of the tooth root and teeth of the patient, etc., and the dentist can perform correct medical diagnosis and follow-up related treatment based on the X-ray image.
[0004] At present, the method to take tooth or tooth root X-ray images can be divided into panoramic radiograph and periapical radiograph, wherein the panoramic radiograph is to perform X-ray photography around the patient's oral cavity after the patient is positioned. Although a more comprehensive image of teeth and tooth roots can be quickly obtained, the clarity is not enough. If any tooth or some areas are needed to know more about, periapical radiograph would usually be chosen. Periapical radiograph system directly covers a display film (also called a direct digital image digitizer) for displaying the results of X-ray irradiation with a protective case, and puts it directly into the position of the local teeth to be photographed in the patient's mouth, and is controlled by the dentist, medical staff or the patients’ themselves by finger pressing for positioning.
[0005] In order to increase the efficiency of fixing the position for periapical radiograph, an auxiliary device is used to clamp and engage the X-ray film to position it. The current method of taking X-ray film of tooth apex is to use an X-ray film holder, which includes a positioning frame and a clamping portion. The positioning frame and the clamping portion are connected through a base. The X-ray film is clamped to the clamping portion, and the clamping portion is placed in the patient's mouth, and then the patient opens the mouth and firmly fixes the holder of the X-ray film with the teeth. Finally, the lens is placed on the positioning frame to fix the angle of the X-ray machine to capture images.
[0006] However, whether using finger pressed or an X-ray film holder would cause a high foreign body sensation in the patient, and it is easy to feel vomiting, and there will be problems such as drooling; furthermore, due to the three-dimensionally arrangement of roots and root canals,, if the shooting angle is not adjusted well, it is easy to overlap the roots and root canals in some dental images, which will affect the diagnosis. Therefore, the adjustment of the shooting angle requires a high degree of professionalism and sufficient experience. However, whether it is positioning by finger or X-ray film holder, it takes a long time to adjust the angle, and it is easy to misplace the X-ray film and requires one or more fine adjustments to be able to shoot X-ray images that meet the needs. However, such repetitive mistakes will increase the number of X-rays taken, which in turn exposes the patient to X-rays multiple times, increasing the risk of cancer.
[0007] In summary, it is necessary to invent a device for dental radiograph imaging and method thereof to improve the comfort of shooting X-ray images of teeth or tooth roots, increase the correct positioning of X-ray film, and increase the ease of operation simultaneously.
SUMMARY OF THE INVENTION
[0008] To solve the foregoing problem, one objective of the present invention is to provide a dental radiograph imaging device, comprising: a film holder formed a hollow frame having a frontal opening and connected to a positioning movable element; and a biting plate formed an arc-shaped occlusal portion, wherein a left end and a right end of the arc-shaped occlusal portion respectively extend to cover left and right posterior teeth, and a side edge of the left end of the arc-shaped occlusal portion extends to form a left holding wall, and a side edge of the right end of the arc-shaped occlusal portion extends to form a right holding wall, and the left holding wall and the right holding wall respectively have a positioning fixing element configured to fix the positioning movable element of the film holder.
[0009] In one embodiment of the present invention, an anterior edge of a middle end of the arc-shaped occlusal portion extends a frontal holding piece to fix and position the biting plate on the teeth.
[0010] Another objective of the present invention is to provide a dental radiograph imaging device, comprising: a film holder formed a hollow frame having a frontal opening and connected to a positioning movable element; and a biting plate formed a flake-shaped occlusal portion, wherein the flake-shaped occlusal portion covers at least the width of four incisors; a rear edge of the flake-shaped occlusal portion extends to form a holding wall; and the holding wall have a positioning fixing element configured to fix on the positioning movable element of the film holder.
[0011] In one embodiment of the present invention, an anterior edge of the flake-shaped occlusal portion extends a holding piece to fix and position the biting plate on the teeth.
[0012] In one embodiment of the present invention, the positioning movable element is a positioning column, and the positioning fixing element is a positioning hole.
[0013] In one embodiment of the present invention, the positioning movable element is a positioning sliding block, and the positioning fixing element is a positioning slide rail.
[0014] In one embodiment of the present invention, the hollow frame of the film holder is used for placing an imaging film and/or a sensor film.
[0015] The other objective of the present invention is to provide a method of utilizing the dental radiograph imaging device according to claim 1 for capturing a dental image of a tooth of a user, comprising: placing an imaging film and/or a sensor film in the film holder; assembling the film holder with the biting plate and adjusting angle and/or position thereof; mounting and fixing the dental radiograph imaging device on the user's teeth; and capturing the image of the tooth.
[0016] In one embodiment of the present invention, the user bites the arc-shaped occlusal portion or the flake- shaped occlusal portion with the upper and lower teeth to fix the occlusal holding device on the user's teeth. [0017] In one embodiment of the present invention, an angle between the positioning fixing element and the positioning movable element is adjustable.
[0018] The dental radiograph imaging device of the present invention and the method for capturing an image of a tooth of a user by the dental radiograph imaging device solve many problems encountered by users and operators in the clinical examination of dental X-ray photography. The dental radiograph imaging device of the present invention can be applied to the occlusal surfaces of the user's rear and central teeth respectively, so it is only necessary for the user to easily bite the biting plate, the biting plate would be fixed in the correct position on the user's teeth for subsequent correct correspondence with the position of the tooth or the tooth root to be photographed.
[0019] Furthermore, according to the dental radiograph imaging device of the present invention, the film holder can be freely adjusted in position with the positioning movable element in the positioning fixing element of the biting plate, thus allowing the operator to easily adjust the position of the X-ray film on the tooth or the tooth root to be photographed. In the film holder, the angle or position between the hollow frame and the positioning movable element can be adjusted to provide the operator with the flexibility to adjust the position of the X-ray film according to different users' oral cavity, occlusion and other structures, so that there is no need to fix the position of the X-ray film by finger pressing or opening the mouth for biting and can reduce the chances of displacement of X-ray film.
[0020] Therefore, when using the dental radiograph imaging device of the present invention to capture an image of a tooth of a user, it is not necessary to bite on a hard item and the mouth can be completely closed, so that the space in the oral cavity is wide, and could reduce the foreign body sensation in the oral cavity, and can improve the comfort of use, and effectively reduce the problems of vomiting and drooling; furthermore, the dental radiograph imaging device of the present invention and the use thereof can improve the fixation of the X-ray film at the correct shooting position to reduce the number of times to adjust the position of the X-ray film and to repeat shooting, and the positioning method of the present invention is intuitive and easy to operate, and can be easily used without experienced novices; therefore, the dental radiograph imaging device of the present invention and the use thereof can improve the progress of the clinical examination of dental X-ray photography, and save more time and improve efficiency.
[0021] The embodiments of the present invention are further described with the following drawings. The following embodiments are given to illustrate the present invention and are not intended to limit the scope of the present invention, and those having ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention is defined by the scope of the appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0022] FIG. 1 schematically illustrates the dental radiograph imaging device with respect to posterior teeth of one embodiment of the present invention.
[0023] FIG. 2 schematically illustrates the film holder of one embodiment of the present invention.
[0024] FIG. 3 schematically illustrates the biting plate for posterior teeth of one embodiment of the present invention.
[0025] FIG. 4A schematically illustrates the dental radiograph imaging device for upper posterior teeth of one embodiment of the present invention. [0026] FIG. 4B schematically illustrates the dental radiograph imaging device for lower posterior teeth of one embodiment of the present invention.
[0027] FIG. 5 schematically illustrates the biting plate for anterior teeth of one embodiment of the present invention.
[0028] FIG. 6A schematically illustrates the dental radiograph imaging device for lower anterior teeth and the film holder of one embodiment of the present invention.
[0029] FIG. 6B schematically illustrates the dental radiograph imaging device for upper anterior teeth of one embodiment of the present invention.
[0030] FIG. 7A schematically illustrates the biting plate for upper posterior teeth of one embodiment of the present invention.
[0031] FIG. 7B schematically illustrates the biting plate for lower posterior teeth of one embodiment of the present invention.
[0032] FIG. 7C schematically illustrates the film holder of one embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0033] According to the present invention, the numerical values used herein are approximate values, and all numerical values are expressed within a range of 20%, preferably within a range of 10%, and most preferably within a range of 5%.
[0034] According to the present invention, the dental radiograph imaging device of the present invention could be made up of materials that are penetrable by X-ray or other light that is commonly used in the art, and the materials are preferably soft, flexible, and elastic. In one embodiment of the present invention, the material could be medical materials such as silicone, plastic, rubber, rayon, and so on.
[0035] According to the present invention, the "vertical placement" described herein refers to placing the long side of the film holder of the present invention or the film along the long axis of the user's teeth; and the "horizontal placement" described herein refers to placing the long side of the film holder of the present invention or the film perpendicular to the long axis of the user's teeth.
[0036] The dental radiograph imaging device of the present invention is utilized to capture a dental image of a tooth and/or a tooth root of a user. The method of utilizing the dental radiograph imaging device comprises: placing an imaging film and/or a sensor film in the film holder, and then assembling the film holder with the biting plate and adjusting angle and/or position thereof, and then mounting and fixing the dental radiograph imaging device on the user's teeth, and then capturing the image of the tooth. Those with ordinary skill in the art can arbitrarily change, replace, add, and/or delete any steps in the method.
EXAMPLE 1
The dental radiograph imaging device of the present invention used for posterior teeth
[0037] Refer to Fig. 1. The illustration shows the dental radiograph imaging device 10, which is one embodiment of present invention for posterior teeth. The dental radiograph imaging device 10 of the present invention comprises a film holder 11 and a biting plate 12, wherein the film holder 11 is used for placing an imaging film and/or a sensor film, and assembled with the biting plate 12 for posterior teeth The way to capture the image of specific position for the user can be simpler and more accurate, especially the improvement of users' comfort.
[0038] FIG. 2 schematically illustrates the film holder 11 of one embodiment of the present invention. The film holder 11 is formed a hollow frame 111, which have a frontal opening 1111, and connected to a positioning movable element 112. The positioning fixing element 122 of biting plate 12 is to position the positioning movable element 112. One with ordinary skill in the art can adjust the size of the film holder 11 of the present invention based on the needs.
[0039] FIG. 3 schematically illustrates the biting plate 12 for posterior teeth of one embodiment of the present invention; wherein the biting plate 12 is formed a soft arc-shaped occlusal portion 121, and a left end and a right end of the arc-shaped occlusal portion 121 respectively extend to cover the left and right molars of the user, and a side edge of the left end of the arc-shaped occlusal portion 121 extends to form a left holding wall 1212 and a side edge of the right end of the arc-shaped occlusal portion 121 extends to form a right holding wall 1213, and the left holding 1212 wall and the right holding wall 1213 respectively have a positioning fixing element 122 and 123; wherein the positioning fixing element 122 and 123 of the biting plate 12 is configured to fix the positioning movable element 112 of the film holder 11.
[0040] In one embodiment of the present invention, the positioning movable 112 can be used to adjust the angle between the film holder 11 and the arc-shaped occlusal portion 121 of the biting plate 12.
[0041] In one embodiment of the present invention, an anterior edge of a middle end of the arc-shaped occlusal portion 121 extends a frontal holding piece 1214 to fix and position the biting plate 12 on the tooth.
[0042] In one embodiment of the present invention, between the biting plate 12 and the occlusal surface of the user's teeth further comprises an anti-slip structure 124 to increase the friction between the biting plate 12 and the user's teeth, and reduce the displacement of the biting plate 12; wherein the anti- slip structure 124 includes, but not limited to, a zigzag structure or a wave shape structure.
[0043] In one embodiment of the present invention, the positioning fixing element 122 and 123 is a positioning slide rail, and the positioning movable element 112 is a positioning sliding block; wherein the positioning slide rails are respectively located on the opposite side of the left holding 1212 wall and the right holding wall 1213, and the length of the positioning rail includes, but not limited to, the distance from the user's first premolars to the second molar. According to the use requirements, the shape of the positioning rail can be changed, for example, in the embodiments of the present invention, a linear slide rail structure with a narrow opening side is used, and when the user raises the muscles at the mouth floor for biting, the upper and lower grooves in the slide rail can resist the force that causes the film holder 11 and the biting plate 12 to lift up and down, so that when the positioning sliding block and the positioning sliding rail are combined together, it is less likely to fall off.
[0044] The biting plate 12 of the dental radiograph imaging device 10 of the present invention can be used for the upper posterior teeth and the lower posterior teeth according to the use position; and depending on the user, it can be used for adults, and children, the following detailed description of these methods of use.
1-1 The dental radiograph imaging device used for the upper posterior teeth
[0045] In one embodiment of the present invention, the biting plate 12 is used for the upper posterior teeth of adults and/or children; wherein the length of the longitudinal axis of the arc-shaped occlusal portion 121 is the user's central incisor/deciduous central incisor end to the posterior edge of the hard palate, and the width of the horizontal axis of the arc-shaped occlusal portion 121 is calculated by the formula of å A cos Q, wherein A is the mesiodistal dimension of a single upper posterior teeth/upper posterior deciduous teeth, and Q is the angle between the mesiodistal dimension and the horizontal line; furthermore, the width of the middle end of the arc-shaped occlusal portion 121 is the average distance between the user’s upper and lower tooth cutting ends, and the width between the left end and the right end is the bite width of the user's upper and lower molars.
[0046] The biting plate 12 of the present invention can be made to a customized size according to a specific user and can also be made to a generally standardized size according to the ordinary skill in the art, for example: the size of different individual teeth is not very different but the width and front and back diameters of the overall dental arch are more obviously different. Therefore, according to the statistical data of the size of the adult/child dental arch, the biting plate 12 can be made into at least three sizes of S, M, and L, wherein the arc-shaped occlusal portion 121 of adult size L could be, but not limited to, longitudinal axis length 65 mm and horizontal axis width 80 mm, adult size M could be, but not limited to, longitudinal axis length 60 mm and horizontal axis width 75 mm, and adult size S could be, but not limited to, the longitudinal axis length 55 mm and the horizontal axis width 70 mm.
[0047] In the embodiment of the present invention, as shown in FIG. 4A, which schematically illustrates the dental radiograph imaging device 10 for upper posterior teeth of one embodiment of the present invention. The dental radiograph imaging device 10 of the present invention is used to capture the image of the teeth of the user’s upper posterior teeth, and the methods and steps are as described above. Wherein, according to the angle between the user’s hard palate bones and occlusal surface of the upper posterior teeth, the angle between the film holder 11 and the biting plate 12 can be adjusted appropriately; wherein preferably the angle is 120 degrees. The relative position between the film holder 11 and the biting plate 12 can also be adjusted appropriately according to the position of the specific tooth and/or tooth root image to be taken. Taking the tooth root commonly used in the art of the present invention as an example, splitting in the center line of the user's upper teeth, using the adult size 2 film (e.g. Value Pak, Adult, Size 2, 1-1/4" x 1-5/8" (Pack of
150)) in vertical placement for capturing the image can cover the range of central incisors and lateral incisors putting the adult size 1 film in vertical placement for capturing the image can cover the range of canine and the first premolars, and using the adult size 2 film in horizontal placement for capturing the image can cover the range from the second premolars to the second molar, even to the third molar.
1-2 The dental radiograph imaging device used for the lower posterior teeth
[0048] In one embodiment of the present invention, the biting plate 12 is used for the lower posterior teeth of adults and/or children; wherein the length of the longitudinal axis of the arc-shaped occlusal portion 121 is the user's central incisor/deciduous central incisor end to the posterior edge of molar/second deciduous molar, and the width of the horizontal axis of the arc-shaped occlusal portion 121 is calculated by the formula of å A cos Q, wherein A is the mesiodistal dimension of a single upper posterior teeth/upper posterior deciduous teeth, and Q is the angle between the mesiodistal dimension and the horizontal line; furthermore, the width of the middle end of the arc-shaped occlusal portion 121 is the average distance between the user’s upper and lower tooth cutting ends, and the width between the left end and the right end is the occluding width of the user's upper and lower molars.
[0049] The biting plate 12 of the present invention, as described in example 1-1, can also be made into at least three sizes of S, M, and L, wherein the arc-shaped occlusal portion 121 of adult size L includes, but not limited to, longitudinal axis length 65 mm and horizontal axis width 77 mm, adult size M includes, but not limited to, longitudinal axis length 60 mm and horizontal axis width 72 mm, and adult size S includes, but not limited to, the longitudinal axis length 55 mm and the horizontal axis width 67 mm. [0050] In the embodiment of the present invention, as shown in FIG. 4B, which schematically illustrates the dental radiograph imaging device 10 for lower posterior teeth of one embodiment of the present invention. The dental radiograph imaging device 10 of the present invention is used to capture the image of the teeth of the user’s lower posterior teeth, and the methods and steps are as described above. Wherein, according to the angle between the user’s alveolar crest and occlusal surface of the lower posterior teeth, the angle between the film holder 11 and the biting plate 12 can be adjusted appropriately; wherein preferably the angle is 90 degrees. The relative position between the film holder 11 and the biting plate 12 can also be adjusted appropriately according to the position of the specific tooth and/or tooth root image to be taken.
EXAMPLE 2
The dental radiograph imaging device of the present invention used for anterior teeth
[0051] FIG. 5 schematically illustrates the biting plate for anterior teeth of one embodiment of the present invention. The biting plate 13 forms a soft flake-shaped occlusal portion 131, wherein the flake-shaped occlusal portion 131 covers at least the width of four incisors, and a rear edge of the flake-shaped occlusal portion 131 extends a holding wall 1311, and the holding wall 131 have a positioning fixing element 132 which is used to fix on the positioning movable element 112 of the film holder 11.
[0052] In one embodiment of the present invention, an anterior edge of the flake-shaped occlusal portion 131 extends a frontal holding piece 1312 to fix and position the biting plate 13 on the tooth. [0053] In one embodiment of the present invention, between the biting plate 13 and the occlusal surface of the user's teeth further comprises an anti-slip structure 133 to increase the friction between the biting plate 13 and the user's teeth, and reduce the displacement of the biting plate 13; wherein the anti- slip structure 133 includes, but not limited to, a zigzag structure or a wave shape structure.
[0054] In one embodiment of the present invention, the other rear edge of the flake-shaped occlusal portion 131 extends a retaining section 1313 to increase the occluding contact surface, so that the biting plate 13 can be placed more firmly on the user's anterior teeth area.
[0055] In one embodiment of the present invention, the biting plate 13 of the present invention can be made to a customized size according to a specific user and can also be made to a generally standardized size according to the ordinary skill in the art; wherein the length of the longitudinal axis of the flake-shaped occlusal portion 131 is preferably ± 2 cm of the horizontal distance between the upper and lower teeth of the user, and the width of the horizontal axis of the flake-shaped occlusal portion 131 is the length from the user’s right canine (i.e. the third tooth to the right from the midline) to the left canine projected on the horizontal line. In addition, the length from the frontal end of the flake-shaped occlusal portion 131 to the retaining section 1313 is the vertical distance from the user's median incisor incisal end to the proximal side of the first premolars. Wherein, according to the ordinary skill on the art of the present invention, the upper teeth are usually on the outside and the lower teeth are usually on the inside, and the distance between them is ideally about 2 mm, so the flake-shaped occlusal portion 131 can, but not limited to, increase by 2 mm outward or inward, in order to respond to the dentition or the difference between the maxilla and the mandible bone of some users, so that allowing the biting plate 13 of the present invention to have more space for the user's upper and lower anterior teeth to bite on the flake-shaped occlusal portion 131.
[0056] In one embodiment of the present invention, the positioning fixing element 132 of the biting plate 13 is a positioning slide rail, and the positioning movable element 112 of the film holder 11 is a positioning sliding block; wherein, the positioning slide rail is located on the holding wall 1311, and the length of the positioning slide rail is the range that should be covered by the dental image that can meet the clinical use requirements in the technical field of the present invention. For example, the distance from the cut end of the user’ s upper teeth to the end of the root can be referred. According to the use requirements, the shape of the positioning rail can be changed, for example, in the embodiments of the present invention, a linear slide rail structure with a narrow opening side is used, and when the user raises the muscles at the mouth floor for biting, the upper and lower grooves in the slide rail can resist the force that causes the film holder 11 and the biting plate 13 to lift up and down, so that when the positioning sliding block and the positioning sliding rail are combined together, it is less likely to fall off.
[0057] The biting plate 13 of the dental radiograph imaging device 10 of the present invention can be used for the upper anterior teeth and the lower anterior teeth according to the position; and the following detailed description of these methods of use.
2-1 The dental radiograph imaging device used for the upper anterior teeth
[0058] In the embodiment of the present invention, as shown in FIG. 6A, which schematically illustrates the dental radiograph imaging device 10 for upper anterior teeth of one embodiment of the present invention. The dental radiograph imaging device 10 of the present invention is used to capture the image of the teeth of the user’s upper anterior teeth, and the methods and steps are as described above. Wherein, according to the angle between the user’s hard palate bones and occlusal surface of the upper anterior teeth, the angle between the flake-shaped occlusal portion 131 and the holding wall 1311 of the biting plate 13 can be adjusted appropriately; wherein the angle is preferably the angle between the axial direction of the user's upper anterior teeth and the hard palate bone plus 90 degrees. The relative position and the angle between the film holder 11 and the biting plate 13 can also be adjusted appropriately according to the position of the specific tooth image to be taken; wherein the angle is preferably 90 degrees. Giving taking the tooth image commonly used in the art of the present invention as an example, position the film vertically for capturing the image can cover the range from bilateral central incisors to canine, and even the first premolar.
2-2 The dental radiograph imaging device used for the lower anterior teeth
[0059] In the embodiment of the present invention, as shown in FIG. 6B, which is the abridged general view of the spatial structure of the dental radiograph imaging device 10 for lower anterior teeth of one embodiment of the present invention. The dental radiograph imaging device 10 of the present invention is used to capture the image of the teeth of the user’ s lower anterior teeth, and the methods and steps are as described above. Wherein, according to the angle between the user’s alveolar crest and occlusal surface of the lower anterior teeth, the angle between the flake-shaped occlusal portion 131 and the holding wall 1311 of the biting plate 13 can be adjusted appropriately; wherein the angle is preferably the angle between the axial direction of the user's lower anterior and the alveolar crest 90 degrees. The relative position and the angle between the film holder 11 and the biting plate 13 can also be adjusted appropriately according to the position of the specific tooth image to be taken; wherein the angle is preferably 90 degrees.
EXAMPLE 3
The other dental radiograph imaging device of the present invention used for posterior teeth
[0060] In another embodiment of the present invention, the positioning movable element is a positioning column 151, and the positioning fixing element is a positioning hole 141, as shown in FIGs. 7A to 7C, on opposite sides of the left holding wall and the right holding of the biting plate 14, there are a plurality of positioning holes 141 respectively, and there is a plurality of positioning column 151 on the film holder 15. The positioning column 151 and the positioning holes 141 are a complementary structure like card tenon, which can combine the film holder 15 and the biting plate 14 with each other, wherein the positioning holes 141 are at least in the upper and lower rows and/or the left and right rows, so that the position of the film holder 15 can be adjusted up and down and/or left and right to the specific position of the tooth to be taken dental radiograph.
[0061] In the embodiment of the present invention, the distribution and number of the positioning column 151 and the positioning holes 141 can be changed according to ordinary skill in the art of the present invention. For example, the film holder 15 can include three positioning columns 151, and each of the positioning column 151 could be at equal intervals and arranged on the same horizontal line. On the left holding wall and the right holding wall of the biting plate 14, according to the relative position to the midpoint of the first premolar and the midpoint of the second premolar, the midpoint of the second premolar and the midpoint of the first molar, the midpoint of the first molar and the midpoint of the second molar, and the midpoint of the second molar and the midpoint of the third molar, each row could contain four positioning holes 141, and could include at least two rows of positioning holes 141 on different horizontal lines.
[0062] In summary, the dental radiograph imaging device 10 of the present invention and the method for capturing an image of a tooth of a user by the dental radiograph imaging device 10 solve many problems encountered by users and operators in the clinical examination of dental X-ray photography. The dental radiograph imaging device 10 of the present invention can be applied to the occlusal surfaces of the user's rear and central teeth respectively, so it is only necessary for the user to easily bite the biting plate, the biting plate would be fixed in the correct position on the user's teeth for subsequent correct correspondence with the position of the tooth or the tooth root to be photographed.
[0063] Furthermore, according to the dental radiograph imaging device of the present invention, the film holder can be freely adjusted in position with the positioning movable element in the positioning fixing element of the biting plate, thus allowing the operator to easily adjust the position of the X-ray film on the tooth or the tooth root to be photographed. In the film holder, the angle or position between the hollow frame and the positioning movable element can be adjusted to provide the operator with the flexibility to adjust the position of the X-ray film according to different users' oral cavity, occlusion and other structures, so that there is no need to fix the position of the X-ray film by finger pressing or opening the mouth for biting and can reduce the chances of displacement of X-ray film.
[0064] Therefore, when using the dental radiograph imaging device 10 of the present invention to capture an image of a tooth of a user, it is not necessary to bite on a hard item and the mouth can be completely closed, so that the space in the oral cavity is wide, and could reduce the foreign body sensation in the oral cavity, and can improve the comfort of use, and effectively reduce the problems of vomiting and drooling; furthermore, the dental radiograph imaging device 10 of the present invention and the use thereof can improve the fixation of the X-ray film at the correct shooting position to reduce the number of times to adjust the position of the X-ray film and to repeat shooting, and the positioning method of the present invention is intuitive and easy to operate, and can be easily used without experienced novices; therefore, the dental radiograph imaging device 10 of the present invention and the use thereof can improve the progress of the clinical examination of dental X-ray photography, and save more time and improve efficiency.

Claims

WHAT IS CLAIMED IS:
1. A dental radiograph imaging device, comprising:
a film holder formed a hollow frame having a frontal opening and connected to a positioning movable element; and
a biting plate formed an arc-shaped occlusal portion, wherein a left end and a right end of the arc-shaped occlusal portion respectively extend to cover left and right molars, and a side edge of the left end of the arc-shaped occlusal portion extends to form a left holding wall, and a side edge of the right end of the arc-shaped occlusal portion extends to form a right holding wall, and the left holding wall and the right holding wall respectively have a positioning fixing element configured to fix the positioning movable element of the film holder.
2. The dental radiograph imaging device according to claim 1, wherein an anterior edge of a middle end of the arc-shaped occlusal portion extends a frontal holding piece to fix and position the biting plate on the teeth.
3. The dental radiograph imaging device according to claim 1, wherein the positioning movable element is a positioning column, and the positioning fixing element is a positioning hole.
4. The dental radiograph imaging device according to claim 1, wherein the positioning movable element is a positioning sliding block, and the positioning fixing element is a positioning slide rail.
5. The dental radiograph imaging device according to claim 1, wherein the hollow frame of the film holder is used for placing an imaging film and/or a sensor film.
6. A dental radiograph imaging device , comprising:
a film holder formed a hollow frame having a frontal opening and connected to a positioning movable element; and a biting plate formed a flake-shaped occlusal portion, wherein the flake-shaped occlusal portion covers at least the width of four incisors, and a rear edge of the flake-shaped occlusal portion extends to form a holding wall, and the holding wall have a positioning fixing element configured to fix on the positioning movable element of the film holder.
7. The dental radiograph imaging device according to claim 6, wherein an anterior edge of the flake-shaped occlusal portion extends a holding piece to fix and position the biting plate on the teeth.
8. The dental radiograph imaging device according to claim 6, wherein the positioning movable element is a positioning column, and the positioning fixing element is a positioning hole.
9. The dental radiograph imaging device according to claim 6, wherein the positioning movable element is a positioning sliding block, and the positioning fixing element is a positioning slide rail.
10. The dental radiograph imaging device according to claim 6, wherein the hollow frame of the film holder is used for placing an imaging film and/or a sensor film.
11. A method of utilizing the dental radiograph imaging device according to claim 1 for capturing a dental image of a tooth of a user, comprising:
placing an imaging film and/or a sensor film in the film holder;
assembling the film holder with the biting plate and adjusting angle and/or position thereof;
mounting and fixing the dental radiograph imaging device on the user's teeth; and capturing the image of the tooth.
12. The method according to claim 11, wherein the user bites the arc-shaped occlusal portion or the flake-shaped occlusal portion with the upper and lower teeth to fix the occlusal holding device on the user's teeth.
13. The method according to claim 11, wherein an angle between the positioning fixing element and the positioning movable element is adjustable.
14. A method of utilizing the dental radiograph imaging device according to claim 6 for capturing a dental image of a tooth of a user, comprising:
placing an imaging film and/or a sensor film in the film holder;
assembling the film holder with the biting plate and adjusting angle and/or position thereof;
mounting and fixing the dental radiograph imaging device on the user's teeth; and capturing the image of the tooth.
15. The method according to claim 14, wherein the user bites the arc-shaped occlusal portion or the flake-shaped occlusal portion with the upper and lower teeth to fix the occlusal holding device on the user's teeth.
16. The method according to claim 14, wherein an angle between the positioning fixing element and the positioning movable element is adjustable.
PCT/US2020/041109 2019-07-08 2020-07-08 Dental radiograph imaging device and the use thereof WO2021007272A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201962871291P 2019-07-08 2019-07-08
US62/871,291 2019-07-08

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WO2021007272A1 true WO2021007272A1 (en) 2021-01-14

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US4965885A (en) * 1987-01-28 1990-10-23 Andreas Fuhrmann Film carrier for endodontic dental radiographs
US6190042B1 (en) * 1998-09-29 2001-02-20 Electro Medical Systems Dental x-ray aiming device for longitudinal radiographic analysis
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DE202008006814U1 (en) * 2008-05-20 2009-10-15 Charité - Universitätsmedizin Berlin Device for holding an X-ray film in the dental field

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US20220287661A1 (en) * 2021-03-12 2022-09-15 Flavia Sweeps Bite Tray for Alleviating Dental Discomfort

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