Research and Realization of the Computer-Assisted Colorimetry for Baked Porcelain Tooth

The defect of dentition and its abnormal and tooth row imperfection are the common diseases. Along with the development of science and technology, the dental restoration has already not only been limited to match in the shape, but also been requested the color matched with the natural tooth perfectly, make the dental case more lifelike on the sense of vision. The computer color matching (CCM) can satisfy this requirement. It can also avoid the effect of the surroundings to artificial colorimetric and improve the efficiency. After the analysis of tooth color character, three kinds of algorithms are adopted to carry on the colorimetry for baked porcelain tooth, which are the center colorimetry, the nine sub-areas substraction colorimetry and the improved algorithm. Through analysis the accuracy and time consuming in colorimetry, the advantages and disadvantages of the three algorithms are compared. The computer-aided colorimetric system for baked porcelain tooth(CaCSBPT) is also researched. This design is accomplished in Matlab platform. According to the reflection from clinicians, this design has better clinical value.