Tooth model for dentistry practical training

Abstract

A tooth model for dentistry practical trainings which enables an accurate shape measurement with a laser beam is disclosed. The tooth model for dentistry practical trainings having a dental crown portion (1) formed by imitating the shape of a tooth is characterized that at least the dental crown portion (1) is made of an opaque or semitransparent dental crown forming material, the centerline average roughness Ra of the surface of the dental crown portion (1) is not less than 0.1 m and less than 10 m, and the reflectance of the surface of the dental crown portion (1) is not less than 70 % with respect to a light having a wavelength of 700 nm. The color difference DeltaE<*> ab between the dental crown forming material and the reference white color is preferably not more than 15. Since the shape of the dental crown portion can be accurately measured by a non-contact, rapid three-dimensional shape measuring system, results of various treatment trainings and machining trainings in the educational field can be accurately evaluated by using this tooth model.

Description

technical field [0001] The present invention relates to a tooth model used for dentist practice training, in particular, relates to a tooth model which can use laser to correctly measure the shape for dentist learning and training. Background technique [0002] In the field of education, including dental colleges, dental technical training schools and related institutions, conventional dental models for practical training of dentists have long been widely used, for example, as an example of such tooth models for dental training, Japanese Patent Publication No. No. 2506212 discloses a pair of dentures, which can be easily installed into or removed from the alveolar model where the teeth are placed by using the elasticity of the leaf spring, and Japanese Laid-Open Patent Publication No.2002-628 discloses such a structure A tooth model in which a protrusion is provided to the root portion to fit into a groove formed in the alveolar model. [0003] In various educational facili...

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Problems solved by technology

[0003] In various educational facilities, in order to evaluate the results of treatment practice such as using a tooth model, shape measurement using a laser has been applied in the practice use of a tooth model after a preparation practice or a root canal treatment practice (filling practice), however in the above publication In the case of the general plastic tooth model described in the article, the glossiness of the tooth surface, when illuminated with a laser, is too large to scatter the laser light to a suitable level, thus making it impossible to make correct tooth shape measurements using the laser

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