The research and application on small denture machining equipment are great breakthrough for modern dental restoration technology. In this paper, a small denture machining equipment made of two spindles with four-axis...The research and application on small denture machining equipment are great breakthrough for modern dental restoration technology. In this paper, a small denture machining equipment made of two spindles with four-axis was designed based on machining characteristics and functional analysis. Position accuracy and re-position accuracy were measured by accuracy instrument. In order to test its machining capacity, some typical microstcucture parts, such as straight channel, hemispherical surface, and molars coronal, were selected for high speed milling. It was obtained that the denture machining equipment met the machining requirements with high quality and efficiency, according to the acquisition and analysis of form and position errors, surface roughness, and 3-D profile.展开更多
Oral care products industry is an important part of the daily chemical products industry, which includes toothpaste, toothbrushes and gargle, etc. In 2010, the National Oral Care Products Standardization Technical Com...Oral care products industry is an important part of the daily chemical products industry, which includes toothpaste, toothbrushes and gargle, etc. In 2010, the National Oral Care Products Standardization Technical Committee was founded along with three subcommittees. The period of ＂12th Five-Year Plan＂ is not only an important period for the development of oral cleansing products industry, but also the critical time to promote the strategy of fully promotion on the industry standardization. The oral cleansing products standard includes three products： oral care products, oral care appliances and the raw material of oral care products. Toothpaste, as an important product of the oral care products, the earliest toothpaste standard in China can be traced back to 1956, and it became the first national toothpaste draft standard until 1987： GB 8372-1987 ＂Toothpaste＂. The standard was officially approved to be carried out on March 1, 1988. The technical index of GB 8372-2008 includes： net content, quality of toothpaste, pH vaule, stability, superhard particle, soluble and free fluoride, total fluoride, arsenic, mercury, etc.展开更多
基金National Key Technology R&D Program,China(No.2009BAI81B02)PhD Programs Foundation of Ministry of Education of China(No.20070287055)Anhui Natural Science Foundation,China(No.1308085QE93)
文摘The research and application on small denture machining equipment are great breakthrough for modern dental restoration technology. In this paper, a small denture machining equipment made of two spindles with four-axis was designed based on machining characteristics and functional analysis. Position accuracy and re-position accuracy were measured by accuracy instrument. In order to test its machining capacity, some typical microstcucture parts, such as straight channel, hemispherical surface, and molars coronal, were selected for high speed milling. It was obtained that the denture machining equipment met the machining requirements with high quality and efficiency, according to the acquisition and analysis of form and position errors, surface roughness, and 3-D profile.
文摘Oral care products industry is an important part of the daily chemical products industry, which includes toothpaste, toothbrushes and gargle, etc. In 2010, the National Oral Care Products Standardization Technical Committee was founded along with three subcommittees. The period of ＂12th Five-Year Plan＂ is not only an important period for the development of oral cleansing products industry, but also the critical time to promote the strategy of fully promotion on the industry standardization. The oral cleansing products standard includes three products： oral care products, oral care appliances and the raw material of oral care products. Toothpaste, as an important product of the oral care products, the earliest toothpaste standard in China can be traced back to 1956, and it became the first national toothpaste draft standard until 1987： GB 8372-1987 ＂Toothpaste＂. The standard was officially approved to be carried out on March 1, 1988. The technical index of GB 8372-2008 includes： net content, quality of toothpaste, pH vaule, stability, superhard particle, soluble and free fluoride, total fluoride, arsenic, mercury, etc.
