초록

A method for providing data useful in procedures associated with the oral cavity, in which at least one numerical entity representative of the three-dimensional surface geometry and color of at least part of the intra-oral cavity is provided and then manipulated to provide desired data therefrom.

대표청구항 ▼

I claim: 1. A method of providing data useful in procedures associated with the oral cavity, comprising: providing at least two numerical entities, each numerical entity being representative of a three-dimensional surface geometry and color of a corresponding part of the intra-oral cavity including

I claim: 1. A method of providing data useful in procedures associated with the oral cavity, comprising: providing at least two numerical entities, each numerical entity being representative of a three-dimensional surface geometry and color of a corresponding part of the intra-oral cavity including at least a first tissue thereof, wherein each numerical entity comprises surface geometry data and color data associated with the respective corresponding part of the intra-oral cavity, and wherein said at least two numerical entities spatially overlap at respective overlap portions; manipulating said at least two numerical entities to provide desired data therefrom; and (a) for each numerical entity providing at least one sub-entity comprising a first tissue data set exclusively comprising first surface geometry data and first color data corresponding to said first surface geometry data, wherein said first color data is correlated with a color representative of said first tissue, and wherein at least a first portion of said first surface geometry data corresponds to at least a part of the respective overlap portion of the respective numerical entity; and (b) stitching said at least two numerical entities together based on registering only said first portions of respective said first data sets. 2. The method according to claim 1, wherein said color data includes actual or perceived visual characteristics including one of more of hue, chroma, value, translucency, and reflectance. 3. The method according to claim 1, for differentiating said first tissue from a second tissue, wherein said first tissue comprises substantially different color characteristics from those of said second tissue, comprising separating said surface geometry data and said color data into at least two tissue data sets, wherein said first tissue data set comprises said first surface geometry data and said first color data, wherein said first color data is correlated with the color representative of said first tissue; and a second tissue data set comprises a second surface geometry data and a second color data, wherein said second color data is correlated with a color representative of said second tissue. 4. The method according to claim 3, wherein said first tissue and said second tissues comprise hard tissues and soft tissues, respectively, of the intra-oral cavity. 5. The method according to claim 4, wherein said first tissue comprises teeth. 6. The method according to claim 4, wherein said second tissue comprises at least one of gums, tongue, cheeks and lips. 7. The method according to claim 4, wherein said first tissue data set corresponds to a plurality of teeth of said intra-oral cavity. 8. The method according to claim 7, wherein said first tissue data set is divided into a plurality of sub data sets, wherein each said sub data set corresponds to a different tooth. 9. The method according to claim 8, further comprising the step of manipulating said sub data sets in a manner simulating an orthodontic treatment on said teeth. 10. The method according to claim 8, further comprising the step of displaying said sub data sets as images corresponding to individual teeth. 11. The method according to claim 1, further comprising the step of: for each entity separating said surface geometry data and said color data into a second tissue data set, comprising second surface geometry data and second color data, wherein said second color data is correlated with a color representative of a second tissue. 12. The method according to claim 11, wherein said second tissue comprises soft tissues of the intra-oral cavity. 13. The method according to claim 12, wherein said second tissue includes at least one of gums, tongue, cheeks and lips. 14. The method according to claim 1, wherein said first tissue comprises hard tissues of the intra-oral cavity. 15. The method according to claim 14, wherein said first tissue comprises teeth. 16. The method according to claim 1, wherein step (b) comprises: providing coarse stitching of the original numerical entities of step (a) by registering overlapping spatial data thereof to determine coarse spatial relationships between said numerical entities; applying said coarse spatial relationships to said first tissue data sets to facilitate registration of overlapping portions; and stitching said first tissue data sets together based on registering said overlapping portions. 17. The method according to claim 1, comprising using the color data associated with at least one tooth of said intra-oral cavity for providing shading data for a prosthesis for use in said intra-oral cavity. 18. The method according to claim 17, comprising: (a) providing separate numerical sub-entities each associated with a different one tooth within said intra-oral cavity; (b) providing a prosthesis entity comprising surface geometrical data, said prosthesis entity being associated with a desired prosthesis; (c) mapping color data from at least one sub entity in step (a) to said prosthesis entity according to predetermined criteria. 19. The method according to claim 18, wherein step (c) comprises (i) transforming the geometrical data of each said separate numerical sub-entities to correspond to a predetermined geometrical form, and mapping said color data to said geometrical form to provide for each said separate numerical sub-entity a transformed sub-entity; (ii) transforming the geometrical data in (b) to correspond to said prosthesis entity and mapping color data associated with the transformed sub-entity to said prosthesis entity. 20. The method according to claim 19, wherein in step (a) a plurality of separate numerical sub-entities associated with a corresponding plurality of teeth within said intra-oral cavity are provided; and wherein in step (c) the said transformed sub-entities are combined to a single transformed sub-entity, wherein color data corresponding to said plurality of numerical sub-entities in (a) are combined in a predetermined manner. 21. The method as claimed in claim 20, wherein said predetermined manner comprises averaging the color value at each corresponding data point of said plurality of numerical sub-entities in (a). 22. The method as claimed in claim 20, wherein said predetermined manner comprises weight averaging the color value at each corresponding data point of said plurality of numerical sub-entities in (a). 23. The method according to claim 18, wherein in step (a) a single numerical sub-entity associated with one tooth within said intra-oral cavity is provided. 24. The method according to claim 18, wherein step (a) comprises separating said surface geometry data and said color data into at least two tissue data sets, wherein said first tissue data set comprises said first surface geometry data and said first color data, wherein said first color data is correlated with the color representative of said first tissue; and a second tissue data set comprises second surface geometry data and second color data wherein said second color data is correlated with a color representative of said second tissue. 25. The method according to claim 24, wherein said first tissue and said second tissues comprise hard tissues and soft tissues, respectively, of the intra-oral cavity. 26. The method according to claim 25, wherein said first tissue comprises teeth. 27. The method according to claim 25, wherein said first tissue data set corresponds to a plurality of teeth of said intra-oral cavity. 28. The method according to claim 27, wherein said first tissue data set is divided into a plurality of sub-data sets, wherein each said sub-data set correspond to a different said tooth. 29. The method according to claim 1, for providing a finish line for a preparation area in said intra-oral cavity, comprising (a) comparing the color data for each pair of spatially adjacent data points in said numerical entity; (b) if the color data for said pair of data points are substantially different one from the other, providing one data point of said pair of data points; and (c) applying a search algorithm for identifying said finish line in said numerical entity, wherein said application of said algorithm is initially applied to a part of said numerical entity corresponding to the provided data points of step (b). 30. The method according to claim 29, wherein in step (b) the data point of said pair of data points having color data associated with a hard tissue is provided for step (c).