Tracked toothbrush and toothbrush tracking system

1. A hand-held dental tracking device, the device comprising:

a handle sized and shaped to be comfortably grasped by a human user's hand;

a dental implement head attached to the handle; and

at least one imager with a field of view (FOV),

wherein

a direction and size of the FOV of the imager is such that when at least a portion of said dental implement head is within said user's mouth, said FOV includes at least a portion of said user's body outside the oral cavity,

said device further comprises a processor configured to:

acquire from said at least one imager, at least a first image which includes said at least a portion of said user's body outside of said user's oral cavity;

acquire from said at least one imager, at least one dental image of a plurality of user dental features;

identify said at least a portion of said user's body portion in said first image with respect to said imager;

determine, using at least said first image, a position of said dental device with respect to said at least a portion of said user's body portion;

determine a position of said portion of said dental device inside said user's oral cavity with respect to a dental feature using an anatomical model;

generate a tooth model of at least one tooth using said at least one dental image; and

generate said anatomical model using at least said tooth model and at least said position of said a portion of said user's body portion.

2. The device according to claim 1 , wherein said direction of said FOV is in a direction configured to include an image of a reflection, said reflection including said at least a portion said user's body outside the oral cavity and at least a portion of said dental device.

3. The device according to claim 1 , wherein said at least one imager comprises:

a first imager with a FOV configured to image at least a portion of said user's body outside the oral cavity;

and

a second imager with a FOV configured to image a reflection of at least a portion said user's body outside the oral cavity.

4. The device according to claim 3 , wherein said second imager is located on a handle of said device.

5. The device according to claim 1 , further comprising at least one contact sensor configured to detect contact between said dental implement head and a tooth.

6. The device according to claim 1 , wherein said device comprises a detachable dental implement head, and wherein said detachable dental implement head comprises a toothbrush.

7. The device according to claim 1 , wherein said device comprises a detachable dental implement head, and wherein said detachable dental implement head comprises a mirror.

8. The device according to claim 1 , wherein said device comprises a detachable dental implement head, and wherein said detachable dental implement head comprises a calibration head.

9. The device according to claim 1 , and further comprising said processor configured to display feedback to a dental practitioner, said feedback displayed on said anatomical model.

10. The device according to claim 1 , and further comprising said processor configured to control one or more actuators based on said determined position of said at least a portion of said dental device within said user's oral cavity.

11. The device according to claim 1 , and further comprising said processor configured to:

determine a position of at least one lower face landmark; and

estimate, using said determined position, a mandibular angle.

12. A dental device tracking method comprising:

acquiring, using an imager of a dental device when at least a portion of said dental device is within said user's mouth, at least a first image which includes an image of at least one user body portion outside of a user's oral cavity;

identifying said at least one user body portion in said first image;

determining, using said at least said first image, a position of said dental device with respect to said at least one user body portion; and

acquiring:

at least one dental image of a plurality of user dental features using an intra oral scanner (IOS) imager;

at least one body image of one or more user body portions outside the oral cavity using at least one additional imager of said IOS;

identifying a position of said one or more user body portions with respect to said IOS, using said at least one image;

generating a tooth model of at least one tooth using said at least one dental image; and

generating said anatomical model using at least said tooth model and at least said position of said one or more user body portions.

13. The method according to claim 12 , wherein at least said first image also includes a reflected image.

14. The method according to claim 13 , wherein said reflection includes at least a portion of said user's body outside the oral cavity.

15. The method according to claim 13 , wherein said reflection includes at least a portion of said dental device.

16. The method according to claim 12 , further comprising determining a position of at least one lower face landmark; and estimating, using said determined position, a mandibular angle.

17. The method according to claim 12 , wherein said determining also includes determining a position of a/said portion of said dental device inside said user's oral cavity with respect to a dental feature using an anatomical model.

18. The method according to claim 12 , wherein said at least one additional imager is located on a handle of said IOS.