| 摘要 |
PROBLEM TO BE SOLVED: To provide a tooth for a dental arch model that solves the problems, wherein conventional dental arch models have cutting properties different from natural teeth, dental students having completed formation trainings, such as anchor tooth formation and cavity preparation by using these conventional models are frequently puzzled to have different cutting and handling properties upon dental works in the oral cavity in practice, wherein these conventional dental arch models are significantly different from natural teeth in cutting properties, including slipperiness and ease in scraping. SOLUTION: In the tooth for the dental arch model for treatment training, an enamel part of the tooth is prepared from an inorganic powder polycrystalline fired body, and a dentin part is prepared from a resin or a composite thereof. The composition of the inorganic powder polycrystalline fired body is an Al2O3 powder fired body. The composition of the dentin part is one among an acrylic system, an epoxy system, and a melamine system. The composition of the tooth enamel part is made of Al2O3 powder fired body, having a primary particle size of 0.1 to 1.0μm, and the firing temperature range of the enamel is 1,300 to 1,600°C. COPYRIGHT: (C)2008,JPO&INPIT
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