Method and arrangement for determining a combined data record for a masticatory organ to be measured

• US 9,453,722 B2
• Filed: 08/26/2010
• Issued: 09/27/2016
• Est. Priority Date: 08/26/2009
• Status: Active Grant

• Current Assignee: Degudent GmbH (Astrazeneca PLC)
• Original Assignee: Degudent GmbH (Astrazeneca PLC)
• Inventors: Ertl, Thomas
• Primary Examiner(s): Park, Chan
• Assistant Examiner(s): Thomas, Mia M
• Application Number:
  US13/392,544
• Publication Number:
  US 20120224756A1
• Time in Patent Office: 2,224 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: A61C 9/00 Impression cups, i.e. impression trays; Impression methods computer-assisted sizing A61C13/0004; instruments for determining occlusion A61C19/05
• CPC Class Codes: A61C 9/0053 Optical means or methods, e.g. scanning the teeth by a laser or light beam
• CPC Class Codes: G01B 11/245 using a plurality of fixed, simultaneously operating transducers G01B11/2408 - G01B11/2425, G01B11/255 take precedence
• CPC Class Codes: G01B 2210/52 Combining or merging partially overlapping images to an overall image

Abstract

A method for determining a combined data record for an object using individual data records based on individual scans of the object, the scans being measured using at least one sensor. To avoid accumulating errors and allow individual data to be rectified or corrected, first partial scans of the object are measured using at least one first sensor and are aligned relative to one another and/or corrected using second partial scans performed by at least two second sensors that are stationary relative to one another, and the individual data records for the combined data record are determined from the aligned and/or corrected partial scans.

Claims

1. A method for determining a total data set of a chewing organ, or an area thereof, the method comprising:

providing a first sensor,

providing at least two second sensors arranged in a fixed relation,

carrying out first partial scans of the chewing organ, or the area thereof, using the first sensor, to measure partially overlapping areas of the chewing organ, or the area thereof,

carrying out second partial scans of the chewing organ using the at least two second sensors,

calculating the total data set of the chewing organ, or the area thereof, from individual data sets from the first partial scans, and either

(a) correcting the total data set using the second partial scans, or

(b) correcting individual data sets from the first partial scans using the second partial scans to produce corrected first partial scans, and generating the total data set of the chewing organ, or the area thereof, from the corrected first partial scans.

2. The method according to claim 1, wherein the at least two second sensors are individual scan optic systems which are constructed according to the principle of multipoint optical coherence tomography, multiple confocal imaging, or multipoint confocal imaging, with chromatic dispersion.

3. The method according to claim 1, wherein at least one of the first sensor and the at least two second sensors are selected from the group consisting of a CCD, CMOS, InGaAs and PbS senor.

4. The method according to claim 1, wherein at least one of the first sensor and the at least two second sensors are a miniature camera in the submillimeter range.

5. The method according to claim 1, wherein the optic system of the at least two second sensors has a confocal design.

6. The method according to claim 1, wherein the at least two second sensors are connected to a holder to form a unit.

7. A method for determining a total data set of a chewing organ, or an area thereof, the method comprising:

providing a first sensor,

providing a plurality of second sensors fixedly attached to a holder,

determining individual data sets of partial scans of the chewing organ using the first sensor,

determining partial scans from the individual data sets using the plurality of second sensors, and

calculating the total data set of the chewing organ from the partial scans from the individual data sets,

moving the plurality of second sensors in an uncorrelated manner with respect to the chewing organ,

simultaneously scanning occlusal, vestibular, and palatinal/lingual areas of the patient'"'"'s mouth,

wherein the holder is displaced in the patient'"'"'s mouth during the determining of the partial scans.

8. The method according to claim 7, wherein an electronic system for merging data streams of the sensors, and a voltage source, is integrated in the holder, besides the plurality of second sensors.

9. The method according to claim 8, wherein the voltage source is a battery with inductive charging capacity.

10. The method according to claim 7, wherein a transmission of the data of the plurality of second sensors is wireless.

11. The method according to claim 7, wherein the holder is covered by a transparent enveloping cover.

12. The method according to claim 7, wherein the holder is dimensioned in such a manner that an at least partial introduction into the mouth of a patient occurs.

13. A The method according to claim 7, wherein the plurality of second sensors are arranged in such a manner that the partial scans of said sensors abut against each other without any gap, or mutually overlap, at least in sections, partially in sections.

14. The method according to claim 7, wherein the at least two second sensors are individual scan optic systems which are constructed according to the principle of multipoint optical coherence tomography, multiple confocal imaging, or multipoint confocal imaging, with chromatic dispersion.

15. The method according to claim 7, wherein at least one of the first sensor and the at least two second sensors are selected from the group consisting of a CCD sensor, a CMOS sensor, an InGaAs sensor, and a PbS sensor.

16. The method according to claim 7, wherein at least one of the first sensor and the at least two second sensors is a miniature camera in the submillimeter range.

17. The method according to claim 7, wherein the optic system of the plurality of second sensors has a confocal design.

18. A device for scanning a chewing organ, or an area thereof, comprising a holder with a plurality of sensors originating therefrom, by means of which the chewing organ, or the area thereof, is scanned,

wherein the holder presents a three-dimensional geometry for the at least partial enclosure of a jaw area, and

wherein the holder further comprises an electronic system for merging data determined by the plurality of sensors, and a power source,

wherein the plurality of sensors are attached in such a manner to the holder that an occlusal, vestibular, and palatinal/lingual area of at least one area of the chewing organ can be scanned simultaneously;

and

wherein the holder is configured so that the holder can partially be placed in the mouth of a patient.

19. The device according to claim 18, wherein a sensor of the plurality of sensors is selected from the group consisting of a CCD sensor, a CMOS sensor, an InGaAs sensor, a PbS sensor, and a miniature camera in the submillimeter area.

20. The device according to claim 18, wherein the holder presents an inertial system.

21. The device according to claim 18, wherein the holder is provided with a transparent enveloping cover that covers at least the plurality of sensors.

22. The device according to claim 18, wherein the holder presents a three-dimensional geometry to enclose a jaw area at least in sections.