NOVEL FABRICATION METHOD OF CAD/CAM CROWNS BONDED TO ZIRCONIA BRIDGE

KURIYAMA Soichi, HOTTA Yasuhiro, MIYAZAKI Takashi

doi:10.14930/jshowaunivsoc.74.553

In dental routine work for patients, not only simple management with medication but also various types of restorations and/or prostheses are necessary. A wide variety of materials and devices are useful to facilitate such procedures. General operations such as an “Inlay”, “Crown”, “Bridge” and “Denture” are normally performed by the dental technician using various materials. However, the problem of the increasingly aged society in Japan has caused a shortage of skillful dental technicians. The CAD/CAM system, which has been widely used in industry, is indispensable technology to improve this situation. In recent years, the metallic intraoral applications have been decreasing in order to avoid allergy problems and due to unstable cost fluctuations. Consequently, the market for the all-ceramic restorations in dentistry has been rapidly growing, especially the market for fabrications from the CAD/CAM system that can constantly produce prostheses with precision fit and equivalent quality. However, the zirconia-based all-ceramic restorations are still supported by the advanced techniques of the dental technician because it is necessary to build-up the porcelain to the zirconia frame. We propose a novel fabrication method of CAD/CAM fabricated veneering ceramics which adheres to the zirconia frame in place of the porcelain build-up method. In this article, we would like to evaluate the efficacy of the novel fabrication method through various strength tests and fracture resistance.

NOVEL FABRICATION METHOD OF CAD/CAM CROWNS BONDED TO ZIRCONIA BRIDGE

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