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EP-4736809-A2 - DENTAL DEVICE WITH PROBE

EP4736809A2EP 4736809 A2EP4736809 A2EP 4736809A2EP-4736809-A2

Abstract

An intra oral scanner (IOS) including a probe is disclosed. Optionally, the probe is calibrated to measure locations at a higher accuracy than the IOS. For example, the probe may be used to locate points in a 3D map at high precision and/or the points used to increase the precision of location of other points and/or surfaces in the map. In some embodiments, the probe includes a sensor. Optionally, the probe may be used to measure locations that are hard to view with the IOS. For example, the IOS probe combination may be used to produce 3D maps of a recess in a tooth and/or gums and/or a periodontal pocket and/or to traduce a 3D map or periodontal disease. In some embodiments the probe may be used to measure physical properties, for example, the IOS probe combination may be used to produce a 3D image of hardness of mucosa.

Inventors

  • PESACH, BENNY
  • REUVENNY, Amitai
  • LEHR, Blanc Zach
  • GRAD, YGAEL

Assignees

  • Dentlytec G.P.L. Ltd.

Dates

Publication Date
20260506
Application Date
20180704

Claims (13)

  1. An intra oral scanner (IOS), comprising: a. a body having a proximal end and a distal end, the body extending in a first direction; b. at least one imager configured for imaging in a second direction different from the first direction; and c. a probe extending in the second direction and within a field of view of said at least one imager; d. at least one source of ultraviolet light and at least one fluorescence measuring element; e. a processor comprising instructions for collecting data from one or more of said at least one imager and said at least one fluorescence measuring element.
  2. The IOS according to claim 1, wherein said probe is a hollow probe comprising a channel extending within said probe until reaching an opening positioned at a distal end of said probe.
  3. The IOS according to claim 1 or claim 2, wherein said IOS comprises an optical fiber within said channel.
  4. The IOS according to any one of claims 1-3, wherein said optical fiber is coupled to a light source suitable for one or more of ablation, coagulation, tissue cutting, illumination and sending via said optical fiber.
  5. The IOS according to any one of claims 1-4, wherein said at least one source of ultraviolet light and said at least one fluorescence measuring element are used to generate plaque measurement data.
  6. The IOS according to any one of claims 1-5, further comprising at least one additional sensor.
  7. The IOS according to claim 6, wherein said at least one additional sensor is configured to collect measurement data on one or more of: force, distance, color, strain, reflectivity, pressure, stress, light.
  8. The IOS according to claim 3, wherein said at least one additional sensor is connected to said optical fiber.
  9. The IOS according to any one of claims 1-8, wherein said at least one source of ultraviolet light and at least one fluorescence measuring element are positioned on one or more of said body and said probe.
  10. The IOS according to any one of claims 1-9, wherein said processor comprises further instructions to incorporate said collected data into a periodontal chart.
  11. The IOS according to any one of claims 1-10, wherein said processor comprises further instructions to combine, in said periodontal chart, data collected form said at least one fluorescence measuring element and/or from said at least one sensor with a specific measured tooth.
  12. The IOS according to any one of claims 1-11, wherein said processor comprises instructions for measuring one or more of plaque deposit, pocket depth, a location of said probe in relation to at least one buccal feature and a location of a cement to enamel junction (CEJ).
  13. The IOS according to any one of claims 1-12, wherein said at least one source of ultraviolet light and said at least one fluorescence measuring element are used to generate calculus measurement data.

Description

RELATED APPLICATION/S This application is a PCT application claiming priority from U.S. Provisional Application number 62/528,496 filed on 4 July 2017. The contents of all of the above applications are incorporated by reference as if fully set forth herein. FIELD AND BACKGROUND OF THE INVENTION The present invention, in some embodiments thereof, relates to a dental probe, optionally provided as part of or an attachment for an intra oral scanner (IOS) and/or optionally providing imaging or sensing or other functionality. SUMMARY OF THE INVENTION According to an aspect of some embodiments of the invention, there is provided a method of making oral measurements, including: providing an IOS with an elongate probe extending therefrom; contacting a plurality of points inside the oral cavity with the probe, while scanning the cavity with the IOS; and determining a position of each of the plurality of points from the scanning, using the IOS scanning to determine a position in space of the elongate probe. According to some embodiments of the invention, the accuracy of the determined position is more accurate than the position accuracy of point locations obtained by the IOS without the probe. According to some embodiments of the invention, the method further includes: calculating a location of a surface using the determined positions. According to some embodiments of the invention, the method further includes: calculating a measurement of a length using the determined positions. According to some embodiments of the invention, the method further includes: calculating a position of a curved plane using the determined positions. According to some embodiments of the invention, the determining includes determining positions of the points relative to each other. According to some embodiments of the invention, the determining includes determining positions of the points relative to an oral feature. According to some embodiments of the invention, the contacting includes contacting natural tissue. According to some embodiments of the invention, the contacting includes contacting within a recess in the body. According to some embodiments of the invention, the recess includes one of a socket of a tooth extraction, an excavated hole or groove or cavity in a bone, a drilled hole in a tooth, an excavated cavity in a tooth for an inlay, an excavated cavity in a tooth for an onlay, a grinding area in a tooth and a root of a tooth. According to some embodiments of the invention, the method according further includes determining position of points which are located on areas which are difficult to be determined using IOS including at least one of a steep wall, an interproximal wall with a narrow interproximal gap, optionally a gap smaller or equal to than 2mm, a negative slope wall, a high reflectivity surface, a high absorbance surfaces, an obscured surface and a surface inside a recess. According to some embodiments of the invention, the contacting includes contacting at least one point which is located on an area which is difficult to determined using IOS including at least one of a steep wall, an interproximal wall with a narrow interproximal gap, a negative slope wall, a high reflectivity surface, a high absorbance surfaces, an obscured surface and a surface inside a recess. According to some embodiments of the invention, the recess is naturally formed or artificially formed in a bone, gum and/or a tooth. According to some embodiments of the invention, the contacting includes contacting gum or other mucosal tissue. According to some embodiments of the invention, the contacting includes inserting the probe through mucosal tissue to contact an underlying hard structure. According to some embodiments of the invention, the contacting includes contacting gum is used for measuring gums thickness by comparing obtained 3D model to bone location in a CT 3D model. According to some embodiments of the invention, the method includes measuring bone for an implant. According to some embodiments of the invention, the contacting includes contacting tooth tissue. According to some embodiments of the invention, the method includes measuring tooth abrasion or gaps between opposing teeth when a mouth is closed. According to some embodiments of the invention, the method includes measuring gaps between opposing teeth when closed, for accurate closure mapping. According to some embodiments of the invention, the method includes measuring a horizontal or vertical mismatch of a crown. According to some embodiments of the invention, the method includes measuring the joint between a crown and a tooth to which it is attached. According to some embodiments of the invention, the method includes measuring a tooth prepared for fitting of a crown. According to some embodiments of the invention, the method includes estimating a mechanical or biomechanical property of the mechanical tissue by the contacting. According to some embodiments of the invention, the mechan