COMPUTER GAME

Abstract: The present invention relates to a computer game which when operating on a computer enables a user, via a user's interface, to perform one or more tasks within a virtual environment, the virtual environment comprising a virtual three dimensional dental image consisting of at least one tooth and the tasks performed by the user leading to the improvement of a certain virtual condition associated with the at least one tooth. The three dimensional dental image employed in the computer game is preferably based on or derived from a real life dental environment. The invention further relates to a storage medium for storing data representative of the above computer game and to a method of playing the computer game of the present invention using a computer.

Description: COMPUTER GAME FIELD OF THE INVENTION The present invention is generally in the field of computer games. 5 BACKGROUND OF THE INVENTION Computer games gained considerable popularity as one of the major forms of entertainment, particularly for children and teenagers. Computer games are also increasingly used as an educational aid. In such games, a user has to perform a certain task within a virtual environment based on certain game- specific roles. For 1 0 example, the user has to maneuver a figure through a maze, "destroy " the "bad guys ". overcome obstacles, etc., all of course within the virtual environment. The user controls the game through a user interface which may be the keyboard or the "mouse " of the computer, or may be a game-dedicated interface such as a joystick, a pointer, etc. i s In most computer games, the virtual environment is an imaginary environment generated by the computer, although some computer games make use of a virtual environment based on or derived from a real-life environment. SUMMARY OF THE INVENTION The present invention provides a novel computer game. In accordance with ϋ the present invention, the computer game involves a virtual environment comprising a virtual dental image, for example a virtual image of teeth of the individual playing the game (referred to herein at times as "user "). In the computer game of the invention, the user performs a task which is carried out in this virtual environment. Thus, for example, the user, typically a child, may perform a task of eliminating virtual infectious agents from the teeth, a task of translocating or reorienting the teeth in a manner corresponding somewhat to that in which teeth are translocated or reoriented in an orthodontic treatment, etc. A game with a virtual environment based on an individual's own teeth, may be constructed from data captured of the individual's teeth prior to the onset of orthodontic treatment. Such a game may. for example, be provided to the user by the orthodont who captured the virtual three-dimensional (3D) image of the user's teeth. The computer game may be recorded on a memory medium, e.g. a CD-ROM. a magnetic disk. etc. In accordance with its first aspect the present invention provides a computer game which may be run in a computer and associated storage medium, in which a user, through a user interface, performs one or more tasks within a virtual environment, the game being characterized in that said environment is a virtual environment comprising a virtual three- dimensional dental image consisting of at least one tooth; and said one or more tasks comprise improving a certain virtual condition associated with at least one tooth. In accordance with another aspect the present invention provides a method for playing a game in a computer comprising: (a) extracting data from a storage medium, the data being representative of a virtual environment comprising a virtual three-dimensional dental image consisting of at least one tooth, and displaying said virtual environment; (b) performing, in response to a user command, one or more tasks within a virtual environment to obtain a modified environment and displaying same; said one or more tasks comprise improving a certain virtual condition associated with at least one tooth; and optionally (c) storing data representative of said modified environment in a storage medium. By a still further aspect the invention provides a storage medium storing data being representative of a computer game capable of being run in a computer, in which a user, through a user interface, performs one or more tasks within a virtual environment; said virtual environment comprising a virtual three-dimensional dental image comprising of at least one tooth; and said one or more tasks comprise improving a certain virtual condition associated with the at least one tooth. 5 By a still further aspect the invention provides a storage medium storing data being representative of a virtual environment generated by the above method. In accordance with a preferred embodiment, the virtual environment is based on the user's own teeth and comprises a virtual image of at least one of the user's teeth. i o DETAILED DESCRIPTION OF THE INVENTION In the following, the invention may at times be described with reference made to various physical entities, such as "tooth/teeth ", "jaw ", "bracket", "wire ", "band", etc. It should, however, be understood that it implies, in most cases, a virtual presentation of these entities in the virtual game environment. (At times, 15 however, as may be realized from the context, these terms will refer to the real-life physical entities). Similarly, the terms "movement". "reorientation ", "translo cation ", etc., refer, in most cases, to acts carried out within the virtual environment. In accordance with the present invention a computer game is provided 0 wherein a user has to perform one or more tasks within a virtual environment. The characterizing feature of the invention is that the virtual environment comprises a virtual 3D dental image of teeth, preferably those of the user itself. The virtual image typically comprises a continuous section of the individual's teeth, preferably all teeth of one or both jaws of the individual. The task which the user has to 5 perform is to improve a certain virtual condition which is associated with the teeth. The computer game is typically provided on a storage medium which may be a memory chip, a magnetic disk or diskette, a CD-ROM. etc. The game is played through a user ' s interface which may be the computer ' s keyboard, a mouse, a joystick, a dedicated game-specific interface, etc. The computer game generates a virtual environment which comprises a 3D virtual teeth model, preferably including substantially all teeth of both jaws. The term "substantially " means to denote that while, typically the model will have all teeth of both jaws, at times some teeth, e.g. molar teeth, may not be included. 5 The user is typically an individual, e.g. a child, undergoing an orthodontic treatment and the virtual environment in such a case is generated from data on the 3-D structure of his dental arches acquired by the orthodont before, during or after an orthodontic treatment. A method of acquiring a three-dimensional teeth image is disclosed in PCT ι o Application. Publication No. WO 97/03622. Briefly, in this PCT application a 3D teeth image is obtained from a 3D physical teeth model. The 3D physical teeth model may be a negative teeth model including a matrix with a plurality of cavities or recesses, each corresponding to a tooth; or may be a positive teeth model, that includes a matrix with a plurality of projections or bulges, each corresponding to a 15 tooth. The 3D image is then acquired by removing a portion of the model in a controlled, step-wise manner, and in each step capturing an optical image of the model or of the removed portion. Each of the optical images is then digitized and the plurality of images are then compiled to obtain a 3D digital dental image. Methods and systems for acquiring a 3D dental image are also disclosed in 0 DE-A1-3.810,455. DE-C-4.141,311. US 4.935,635 and US 5.237,988. A method for obtaining a dental occlusion map which may also be applied to generate the virtual 3D dental image of the virtual environment of the computer game of the invention is disclosed in PCT Application WO 98/52.493. Briefly, in this PCT application, the distance between opposite regions on opposite teeth of the 5 upper and lower jaws of the mouth are determined and then a correspondence between the determined distance and regions on a mapping surface is being set-up. This PCT application is also incorporated herein by reference. In the computer game of the invention the user has to perform one or more tasks of improving a certain virtual condition in the 3D virtual teeth image. Such o condition may. in accordance with one embodiment, be a relative position or orientation of one or more teeth or a jaw which differs from an "ideal " position or orientation. An "ideal" position or orientation may be that corresponding to that which would be a desired position or orientation in a real-life orthodontic treatment. This may indeed be the position or orientation corresponding to that 5 aimed to be achieved by the orthodont. Thus, the virtual teeth may be shifted in position or orientation in a manner which resembles that in which the teeth are translocated or reoriented in the real-life orthodontic treatment. Moving of teeth or jaws may be achieved by dragging a certain teeth within a permitted limit using a mouse, by pointing on a teeth or jaw to be moved and i o defining the type of movement or reorientation by the use of a keyboard, etc. In addition, the user may be given virtual tools or components to perform such movement. Such virtual tools or components may. by one embodiment, be virtual orthodontic components corresponding to real-life orthodontic components. Such virtual orthodontic components may include virtual brackets, a virtual 15 arch- wire, virtual rubber bands or tension springs, etc. In addition to being a source of amusement, performing this task in such a computer game will also be educational to the user on the process of orthodontic treatment he may be undergoing. In an exemplary, yet not exclusive, game sequence, the user may first select 0 brackets and place them at appropriate positions on the surface or selected teeth, which may be some or all teeth of one jaw. In most cases, brackets are placed on the buccal teeth's surface. As a next step, the user may select an arch-wire from a library of such wires. The library may also include wires of different widths, different cross-sectional shapes and different geometries. It may optionally also be 5 possible to change the geometry of the selected wire. e.g. make it to follow a torturous path in a vertical and/or a horizontal plane. Thereafter, the wire may be associated with the teeth by. for example, fitting it into the virtual grooves in the brackets placed on the teeth ' s surface. Similarly to a real-life procedure, the wire may first be anchored to brackets fitted on the molar teeth and then to the other 0 brackets (all of course in the virtual environment). The relative reorientation or translocation of the teeth and/or jaws resulting from such a game sequence is computed based on predetermined rules for such translocation or reorientation in accordance with the virtual force or movement applied by the wires. The final outcome may be displayed. If the outcome, namely the final achieved state, is a perfect or close to a perfect relative position or orientation of the teeth and/or jaws, the game goal ma}' be defined as has been achieved. If the final state is not the desired one. the user is prompted to repeat this game sequence. The user ma}' receive a score based on how close the final result was to a perfect final state. In accordance with another embodiment of the invention, the task to be performed by the user is to maintain teeth hygiene. This may involve use of virtual tools, corresponding to such tools used in normal dental hygiene: toothbrush, tooth picks, dental flosses, gum massaging aids. etc. In this embodiment, the game may. for example, have the object of fighting tooth or gum decay, damage or infection which may be caused by carries or other infectious agents. The user may be presented with a library of tools and may have to select a tool to treat a certain developing virtual condition, e.g. carries or a gum infection. In addition, the game rule ma}', for example, determine a certain continuous progress of infection which if not properly "treated" by the user will cause decay of one or more teeth, gum infection, potential bleeding, loss of teeth, etc. The user may score points depending on his ability to choose the right tools to treat a particular condition or in avoiding a condition from developing. Here again, the game, in addition to being amusing and providing an insight of the user into his own teeth, may be educational, particularly for children, on teeth oral hygiene methods and on the importance of maintaining oral hygiene. In accordance with another embodiment of the invention the game may involve use of a variety of virtual imaginary tools such as virtual guns, wands, etc. in order to fight infectious agents of the teeth or gums. In accordance with one embodiment of the invention the user may be permitted to manipulate the virtual environment so as to rotate the virtual teeth model. may be provided with controls allowing him to open and close the jaw in a manner similar to that performed in real life. etc. A manner of manipulating a 3D virtual teeth model in a virtual environment is disclosed in PCT Application WO 98/53428. the contents of which is incorporated herein by reference.

Claims: CLAIMS: 1. For use in a computer and associated storage medium, a computer game capable of being run in said computer, in which a user, through a user interface, performs one or more tasks within a virtual environment, the game being characterized in that: said environment is a virtual environment comprising a virtual three-dimensional dental image consisting of at least one tooth; and said one or more tasks comprise improving a certain virtual condition associated with the at least one tooth. 2. A computer game according to Claim 1. wherein said virtual image comprises a plurality of teeth consisting of at least a continuous section of teeth. 3. A computer game according to Claim 2. wherein said virtual image comprises substantially all teeth of at least one jaw. 4. A computer game according to Claim 3, wherein said virtual image comprises substantially all teeth of both the upper and lower jaws. 5. A computer game according to Claim 4. wherein the user can manipulate the mutual orientation of the two jaws. 6. A computer game according to any one of Claims 1-5. wherein said virtual image consists of teeth of the user. 7. A computer game according to any one of Claims 1-6. wherein said condition is an inappropriate relative position or orientation of at least one tooth or of a jaw: and said one or more tasks comprises one or more of re-orientation of one or more teeth, or changing relative position of the two jaws. 8. A computer game according to any one of Claims 1-6. wherein said condition is a disorder in or lack of structural integrity of one or more teeth, and said one or more tasks comprises improving or fixing said disorder or lack of structural integrity. 9. A computer game according to Claim 8. wherein said disorder or lack of structural integrity comprises damage resulting from one or more virtual infectious agents and said one or more tasks comprises elimination of said agents. 10. A computer game according to any one of Claims 7-9, wherein said one or more tasks is being performed by applying virtual rules, tools or components, corresponding to manner of dental, personal or orthodontic treatment of teeth or jaws. 5 11. A computer game according to Claim 10. wherein said virtual rules comprise rules of movements of teeth or jaws corresponding to such in a real-life orthodontic treatment. 12. A computer game according to Claim 10. wherein said virtual tools or components comprise virtual personal mouth hygiene tools. ιo 13. A computer game according to Claim 10. wherein said virtual tools or components are virtual orthodontic components corresponding to real-life orthodontic components. 14. A computer game according to Claim 10. wherein said virtual rules permitting elimination of virtual infectious agents from the virtual teeth. 1 5 15. A method for playing a game in a computer, comprising: (a) extracting data from a storage medium, the data being representative of a virtual environment comprising a virtual three-dimensional dental image consisting of at least one tooth, and displaying said virtual environment: and 0 (b) performing, in response to a user command, one or more tasks within a virtual environment to obtain a modified environment and displaying same; said one or more tasks comprise improving a certain virtual condition associated with the at least one tooth: 16. A method according to Claim 15. comprising the additional step of: 5 (c) storing data representative of said modified environment in a storage medium. 17. A method according to Claim 15 or 16. wherein step (b) is repeated a plurality of times. 18. A method according to Claim 16 or 17, wherein said virtual three-dimensional dental image comprises substantially all teeth of at least one jaw. 19. A method according to Claim 18. wherein said virtual three-dimensional 5 dental image comprises substantially all teeth of at least one jaw. 20. A method according to Claim 18. wherein said virtual three-dimensional dental image comprises substantially all teeth of both the upper and lower jaws of the individual. 21. A method according to any one of Claims 15-20, wherein said dental image l o consists of teeth of the user. 22. A method according to any one of Claims 15-21. comprising the following step: (bl ) manipulating, in response to a user command, the relative position or orientation of at least one tooth or of a jaw. wherein step (bl ) is carried out 15 either before, simultaneously or after step (b). 23. A method according to Claim 22. wherein the manipulation involves use of virtual orthodontic components corresponding to real orthodontic components used in actual orthodontic treatment. 24. A method according to any one of Claims 15-22. comprising the following 0 step between steps (a) and (b): (al) providing virtual tools or components for a user ' s selection for performing said task. 25. A method according to Claim 24. wherein said virtual tools or components comprise virtual tools corresponding to real-life personal dental hygiene tools or 5 virtual components corresponding to real-life orthodontic components. 26. A storage medium storing data being representative of a computer game capable of being run in a computer, in which a user, through a user interface, performs one or more tasks within a virtual environment: said virtual environment comprising a virtual three-dimensional dental image consisting of at least one tooth; and said one or more tasks comprise improving a certain virtual condition associated with the at least one tooth. 27. A storage medium according to Claim 26, wherein said data is representative of a computer game according to any one of Claims 1-14. -. 28. A storage medium storing data being representative of a virtual environment generated bv the method of anv one of Claims 15-25.

Inventors: TAUB ELDAD, TAUB, ELDAD
Applicants: CADENT LTD, TAUB ELDAD, CADENT LTD., TAUB, ELDAD
Application year: 2000
Main classification: A63F13
IPC codes: A63F13, G09B23