Palatal expander apparatuses and methods using cone beam tomography
OwnerJun SATO, Jeremy RILEY +1inventors
InventorsJun SATO, Jeremy RILEY, Ryan KIMURA
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Abstract
Methods for designing and fabricating palatal expanders by modeling expansion of the palatal region based on material properties for one or more regions of a maxillary jaw determined from a cone-beam computed tomography (CBCT) scan of the maxillary jaw and/or internal topological information for the maxillary jaw determined from the CBCT scan. Also described herein are series of palatal expanders having a sequence and configured to be sequentially worn by a patient to expand the patient's palate in which the left maxillary portion and the right maxillary portion are progressively separated relative to each other, and the thickness of the palatal region changes.
Claims22
A method of forming one or more palatal expanders, the method comprising;
- determining one or more material properties for one or more regions of a maxillary jaw from a cone-beam computed tomography (CBCT) scan of the maxillary jaw;
- determining internal topological information for the maxillary jaw from the CBCT scan;
- modeling expansion of a palatal region of the maxillary jaw from an initial position to an intermediate or final position using the one or more material properties for one or more regions of a maxillary jaw and the internal topological information, wherein a left maxillary portion of the maxillary jaw and a right maxillary portion of the maxillary jaw are progressively translated and rotated relative to their original positions;
- and
- building one or more palatal expanders configured to achieve the final position using the modeled expansion of the palatal region of the maxillary jaw.
-15. (cancelled)
A method of forming one or more palatal expanders, the method comprising:
- determining internal topological information for the maxillary jaw from a cone-beam computed tomography (CBCT) scan, wherein the internal topological information comprises the location of a suture within the maxillary jaw;
- determining local Young's moduli for one or more regions of a maxillary jaw from a CBCT scan including the suture;
- modeling expansion of a palatal region of the maxillary jaw from an initial position to a final position using the one or more material properties for the for one or more regions of a maxillary jaw and the internal topological information, wherein a left maxillary portion of the maxillary jaw and a right maxillary portion of the maxillary jaw are progressively translated and rotated relative to their original positions with respect to a plane through the suture;
- building one or more palatal expanders configured to achieve the final position using the modeled expansion of the palatal region of the maxillary jaw.
A series of palatal expanders having a sequence and configured to be sequentially worn by a patient to expand the patient's palate the series of palatal expanders comprising,
- for each palatal expander in the series:
- a left tooth engagement region, a right tooth engagement region, and a palatal region between the left tooth engagement region and the right tooth engagement region,
- wherein, for one or more palatal expanders in the series of palatal expanders, the left maxillary portion and the right maxillary portion are separated relative to each other relative to an expansion axis that is offset relative to a midline of the palatal region.
-28. (cancelled)
Dependencies are inferred from the claim text.