Abstract:
턱뼈에 삽입하기 위한, 임플란트와 상기 임플란트 상의 어버트먼트를 포함하는 보철물을 만드는 방법에 있어서, 상기 방법은 턱뼈의 첫번째 CT 스캔 이미지로부터의 첫번째 데이터 및 석고 주형의 두번째 이미지로부터의 두번째 데이터를 이용하여 보철물의 모양과 보철물의 턱뼈 내에서의 위치를 규정하는 단계; 첫번째와 두번째의 데이터를 관련시키는 단계로 이루어지며, 상기 데이터를 관련시키는 단계는, 상기 첫번째 데이터로부터 첫번째 이미지에서의 첫번째 기준의 첫번째 위치 기준 데이터를 추출하고, 상기 두번째 데이터로부터 두번째 이미지에서의 두번째 기준의 두번째 위치 기준 데이터를 추출하는 추출 단계로서, 상기 두번째 기준은 첫번째 기준와 동일한 구성으로 된, 추출 단계; 상기 두번째 이미지와 첫번째 이미지를 동일하게 하기 위해서, 그리고, 첫번째 및 두번째 데이터를 복합 스캔 데이터로 조합하기 위해 상기 두번째 데이터 및/또는 첫번째 데이터 상에서 지형적인 변환을 행하는 단계인 것을 특징으로 한다. 임플란트, 보철물, 어버트먼트, 관, 기준 구, CT 스캔
Abstract:
The color of a measurement object, such as a vital tooth, and the color of a comparison object to be compared with the measurement object are displayed to a user in an easily comparable manner. The invention provides an image combining apparatus including an image extracting unit for extracting an image of a vital tooth (hereinafter referred to as 'measurement-object image') from a color image of the vital tooth and extracting an image of a shade guide (hereinafter referred to as 'comparison-object image') from a color image of the shade guide, a combining-reference-line setting unit for setting combining reference lines on the measurement-object image and the comparison-object image, a combining unit for combining the measurement-object image and the comparison-object image to form a combined image, and a correction unit for correcting at least one of the measurement-object image and the comparison-object image so as to align their outlines on the combining reference line in the combined image when the outlines are not aligned.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and an apparatus for generating color mapping relating to a dental object.SOLUTION: The method includes a step of generating a transformation matrix according to a set of spectral reflectance data on a statistically valid sampling of teeth. The dental object is illuminated over at least first, second and third wavelength bands, that is, over each wavelength band at a time. An image data value corresponding to each of the at least first, second and third wavelength bands is obtained for each of a plurality of pixels in an imaging array. A set of visual color values relating to each of the plurality of pixels is generated according to the obtained image data value and according to an image data value obtained from a reference object at the at least first, second and third wavelength bands. Thus, the transformation matrix is applied to form color mapping. The color mapping can be stored in an electronic memory.
Abstract:
Color measuring systems and methods such as for determining the color or other characteristics of teeth are disclosed. Perimeter receiver fiber optics are spaced apart from a central source fiber optic and receive light reflected from the surface of the object/tooth being measured. Light from the perimeter fiber optics pass to a variety of filters. The system utilizes the perimeter receiver fiber optics to determine information regarding the height and angle of the probe with respect to the object/tooth being measured. Under processor control, the color measurement may be made at a predetermined height and angle. Various color spectral photometer arrangements are disclosed. Translucency, fluorescence and/or surface texture data also may be obtained. Audio feedback may be provided to guide operator use of the system. The probe may have a removable or shielded tip for contamination prevention. A method of producing dental prostheses based on measured data also is disclosed. Measured data also may be stored and/or organized is part of a patient data base.
Abstract:
PROBLEM TO BE SOLVED: To provide an image processing system which is capable of high precision color reproduction, inspection and determination and which has a compact and lightweight imaging part with excellent portability. SOLUTION: The image processing system includes an image photographing part which has two or more light emitting devices having different spectral distribution characteristics, an imaging optical system and imaging element part, and a control part controlling light emission and imaging in a spectroscopic image acquisition mode and moving image acquisition mode, and an image processing part which calculates color grade data from the spectroscopic images of a subject obtained in the spectroscopic image acquisition mode. In the spectroscopic image acquisition mode, the control part orders the sequential light emission of the two or more light emitting devices and performs control so as to photograph still images two or more times synchronizing with the emission. In the moving image acquisition mode, the control part orders either the light emission of a light emitting device emitting a specific primary color, the simultaneous light emission of two or more light emitting devices, or the sequential group-to-group light emission of two or more device groups including two or more light emitting devices having different spectral distribution characteristics and performs control so as to acquire moving images. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
The image processing system is applied to dentistry, for example, and performs photography of the teeth of a patient while causing a plurality of illumination light LEDs of different wavelengths to emit light by means of a photography device(1A) when producing a crown repair or denture of the patient, whereby image data are acquired. The image data are transmitted to a dental filing system (2A) constituting a processing device where color reproduction data are determined through computation. In addition, color reproduction data are transmitted to the dental technician's office (55) via a public switched network. Therefore, a repair material compound ratio calculation database (56) is searched and the compound data for a material that matches the hue of the patient's teeth are found, whereby a crown repair or denture or the like that very closely matches the color of the patient's teeth is produced.
Abstract:
PROBLEM TO BE SOLVED: To use a color specification system for denture that has a plurality of colors, positioned inside an elliptic space for expressing a plurality of colors of a natural tooth in a CIELab color space, comprises a small number of primary colors and mixed colors, and can make colors adapt optimally to a plurality of natural teeth for surrounding the denture. SOLUTION: The plurality of primary colors comprise a plurality of first primary colors and at least a group of second primary colors; a plurality of first primary color coordinates are positioned on the vertical axis, namely the reference line, of the elliptic space 18; at least a group of second primary color coordinates are positioned on a surface, crossing the vertical axis, namely the reference line at right angles; a plurality of mixed color coordinates are a plurality of intersection points of a plurality of first and second straight lines; at least one first straight line is extended in parallel with the vertical axis, namely, the reference line; and each second straight line is a connection line, between the coordinates of one primary color of a plurality of first primary colors and one primary color of a plurality of second primary colors. COPYRIGHT: (C)2008,JPO&INPIT