Search

JP-2026514313-A - Posterior occlusal interference element

JP2026514313AJP 2026514313 AJP2026514313 AJP 2026514313AJP-2026514313-A

Abstract

This disclosure describes a technique for fabricating occlusal interference elements within polymer dental instruments. The technique discloses at least one polymer shell containing several cavities molded to fit over a patient's tooth. The polymer shell includes an occlusal instrument surface molded to fit over the patient's occlusal tooth surface. One or more occlusal interference elements are formed within the occlusal instrument surface, each occlusal interference element including a partially disc-shaped feature that extends radially away from the occlusal tooth surface when the patient wears it.

Inventors

  • コッソル，マシュー
  • ディン，ポール
  • ヘディンガー，アラン

Assignees

  • インスティトゥート・シュトラウマン・アクチエンゲゼルシャフト

Dates

Publication Date
20260511
Application Date
20240328
Priority Date
20230331

Claims (20)

  1. A polymer shell having a plurality of cavities molded to fit on a patient's tooth, wherein the polymer shell includes an occlusal instrument surface molded to fit on an occlusal tooth surface, One or more occlusal interference elements, each of which is formed on the surface of the occlusal appliance and includes a partially disc-shaped form that extends radially away from the occlusal tooth surface when worn by a patient, A dental instrument equipped with the following features.
  2. The dental appliance according to claim 1, wherein one or more occlusal interference elements cause displacement between the upper and lower teeth when worn by the patient.
  3. The dental appliance according to any one of claims 1 to 2, wherein the one or more occlusal interference elements include three partially disc-shaped features disposed on the surface of the occlusal appliance corresponding to a single molar or premolar.
  4. The dental appliance according to claim 3, wherein each occlusal interference element, positioned on the surface of the occlusal appliance corresponding to a single molar or premolar, is arranged at intervals of approximately 1.0 mm to approximately 3.0 mm.
  5. The dental appliance according to claim 3, wherein each occlusal interference element, positioned on the surface of the occlusal appliance corresponding to a single molar or premolar, has a vertex located in a single plane.
  6. The dental instrument according to any one of claims 1 to 5, wherein each of the one or more occlusal interference elements has a partially disc-shaped form having a diameter of approximately 3.5 mm to 4.5 mm.
  7. The dental instrument according to any one of claims 1 to 6, wherein each of the one or more occlusal interference elements has a disc-shaped form having a width of approximately 0.3 mm to 0.7 mm.
  8. The dental appliance according to any one of claims 1 to 7, wherein the one or more occlusal interference elements include a plurality of occlusal interference elements formed on the surfaces of the occlusal appliance on a plurality of adjacent teeth.
  9. A method for forming dental instruments, Placing one or more virtual occlusal interference elements on the occlusal surfaces of one or more teeth in a virtual three-dimensional (3D) model of the patient's dentition, wherein each virtual occlusal interference element includes a disk-shaped feature that partially extends radially away from the occlusal surface, The process of creating a physical model of the patient's dentition based on the virtual 3D model, wherein the physical model includes one or more model occlusal interference elements corresponding to one or more virtual occlusal interference elements. Thermoplastic material is thermoformed onto the physical model of the patient's dentition to form a dental instrument having one or more occlusal interference elements corresponding to the aforementioned model occlusal interference elements, The method, including the method described above.
  10. The method according to claim 9, wherein the fabrication of the physical model of the patient's dentition includes 3D printing the physical model of the patient's dentition.
  11. The method according to any one of claims 9 to 10, wherein the one or more occlusal interference elements cause displacement between the upper and lower teeth when the patient wears the device.
  12. The method according to any one of claims 9 to 11, wherein the one or more occlusal interference elements include three partially disc-shaped features positioned on the surface of an occlusal instrument corresponding to a single molar or premolar.
  13. The method according to claim 12, wherein each virtual occlusal interference element is arranged at intervals of approximately 1.0 mm to 3.0 mm.
  14. The method according to claim 12, wherein each virtual occlusal interference element has a vertex located in a single plane.
  15. The method according to any one of claims 9 to 14, wherein each virtual occlusal interference element has a diameter of approximately 3.5 mm to 4.5 mm.
  16. The method according to any one of claims 9 to 15, wherein each virtual occlusal interference element has a width of approximately 0.3 mm to 0.7 mm.
  17. The method according to any one of claims 9 to 16, wherein the placement of one or more virtual occlusal interference elements includes placing multiple virtual occlusal interference elements on the occlusal surfaces of multiple adjacent teeth in the virtual 3D model.
  18. The method according to any one of claims 9 to 17, wherein the arrangement of one or more virtual occlusal interference elements includes arranging a first set of virtual occlusal interference elements on the occlusal surface of a second molar and arranging a second set of virtual occlusal interference elements on the occlusal surface of a first molar or premolar, wherein the second set of virtual occlusal interference elements extends beyond the occlusal surface of the first molar and is larger than the second set of virtual occlusal interference elements extends beyond the occlusal surface of the second molar, and extends beyond the occlusal surface of the first molar or premolar.
  19. A dental instrument manufacturing system configured to produce dental instruments, A computing system that communicates with the aforementioned dental instrument manufacturing system, Receiving three-dimensional (3D) scan data representing the patient's dentition, To generate a virtual 3D model of the patient's dentition, The arrangement involves placing one or more virtual occlusal interference elements on the occlusal surfaces of one or more teeth in the virtual 3D model of the patient's dentition, wherein each virtual occlusal interference element includes a disk-shaped form that partially extends radially away from the occlusal surface. The dental instrument manufacturing system is instructed to manufacture a dental instrument that includes one or more model occlusal interference elements corresponding to one or more virtual occlusal interference elements. The computing system is configured to perform the following: A system that includes these features.
  20. The aforementioned dental instrument manufacturing system is A three-dimensional (3D) printing system configured to produce a physical dental model of the aforementioned virtual 3D dental model, A thermoforming system configured to thermoform a thermoplastic material onto a physical dental model to form a dental instrument having one or more occlusal interference elements corresponding to one or more model occlusal interference elements, The system according to claim 19, including the system described in claim 19.

Description

Cross-reference to Related Applications This application claims priority to and benefits of U.S. Provisional Application No. 63/456,085, titled "Posterior Bite Interference Elements," filed on 31 March 2023, which is incorporated herein by reference in its entirety. This technology relates to a manufacturing technique for dental instruments. More specifically, this technology relates to a technique for forming occlusal interference elements on polymer dental instruments. Orthodontic aligners are a set of devices intended to correct the position of individual teeth in order to properly align teeth. Aligners offer many advantages over traditional bracket/wire braces used in orthodontic treatment. For example, aligners are often transparent or translucent, more comfortable than wire braces, and removable for cleaning and eating. Aligner manufacturing traditionally begins with generating a digital model of the patient's teeth by scanning them or by creating a dental impression and then scanning that impression. Once a digital model of the patient's teeth is obtained, a physical dental model can be fabricated (e.g., using 3D printing) to provide a positive model of the teeth. When an intraoral scanning device (IOS device) is used to scan a patient's teeth, a 3D computer-aided design (CAD) representation can be imported using custom software. This custom software allows operators, such as dental technicians or dentists, to move individual teeth in specific and individual movements, in several stages, according to the treatment plan, to achieve the final, aligned dental arch. At each stage of the patient's treatment plan, a 3D printed model of the dental arch is created. A polymer sheet is then thermoformed onto the top of the 3D printed arch model to form a transparent aligner. Next, the thermoformed parts are marked with part identification marks. Then, the marked and thermoformed parts are cut using one of several methods so that the aligners supplied to the customer can be separated from the excess aligner material. The aligners are then polished to remove burrs and sharp edges, inspected, packaged, and sent to the patient's orthodontist or directly to the patient. This technology relates to a technique for forming occlusal interference elements on orthodontic appliances such as transparent or translucent aligners, dental splints, and retainers. These orthodontic appliances may be made from polymer materials and, in some embodiments, may be manufactured using thermoforming or direct manufacturing (3D printing or other additive manufacturing) processes. Some advantages of this disclosure include the ability to integrally form occlusal interference elements or bite blocks on the occlusal surface of the orthodontic appliance to prevent complete occlusion of the patient. According to one aspect of the present disclosure, a dental instrument is disclosed comprising a polymer shell having several cavities molded to fit over a patient's teeth. The polymer shell includes an occlusal instrument surface molded to fit over an occlusal tooth surface. The instrument also includes occlusal interference elements formed on the occlusal instrument surface, each occlusal interference element comprising a partially disc-shaped feature that extends radially away from the occlusal tooth surface when the patient wears the instrument. In some embodiments, the occlusal interference elements cause displacement between the upper and lower teeth when the patient wears the instrument. In some embodiments, the occlusal interference elements comprise three partially disc-shaped features positioned on the occlusal instrument surface corresponding to a single molar or premolar. In some embodiments, each occlusal interference element is positioned at intervals of about 1.0 mm to 3.0 mm. In some embodiments, each occlusal interference element has a vertex located in a single plane. In some embodiments, the partially disc-shaped features of each occlusal interference element have a diameter of about 3.5 mm to 4.5 mm. In some embodiments, the disc-shaped feature of each occlusal interference element has a width of approximately 0.3 mm to 0.7 mm. In some embodiments, the occlusal interference element includes several occlusal interference elements formed on the occlusal surface of adjacent teeth. Another aspect of this disclosure discloses a method for forming a dental instrument. This method includes positioning virtual occlusal interference elements on the occlusal surfaces of one or more teeth in a virtual three-dimensional (3D) model of a patient's dentition. Each virtual occlusal interference element includes a disk-shaped feature that partially extends radially away from the occlusal surface. The method also includes fabricating a physical model of the patient's dentition based on the virtual 3D model. The physical model includes one or more model occlusal interference elements corresponding to one or more virtual occlusal interference elem