Gypsum-bonded Investment and Dental Precision Casting (I) Two Investments
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چکیده
منابع مشابه
Gypsum-bonded investment and dental precision casting (IV) transformation of III-CaSO4 to II-CaSO4.
The degree of III-CaSO4 to II-CaSO4 transition was estimated on wet specimens, 25 mm in diameter and 50 mm high, prepared from a gypsum-bonded investment for quick casting. After 30 min from mixing the specimens were heated in a 700 degrees C furnace until a specimen temperature of 200 degrees C to 700 degrees C was reached. The estimation was made by measuring mass changes of the specimens bef...
متن کاملGypsum - bonded Investment and Dental Precision Casting ( IV ) Transformation of III - CaS 04 to II - CaS 04
Farzaneh AGHAJANIi'2, Zulia HASRATININGSIHi'3 and Toshiko MORIi'4 iBiomaterials Science Unit, Faculty of Dentistry, The University of Sydney, 2 Chalmers Street, Surry Hills, NSW 2010, Australia2Department of Dental Materials, Faculty ef Dentistry, Tehran University of Medical Science, Tehran, Iran aDepartment of Dental Materials, Faculty ef Dentistry, Padjadjaran University, Jalan Sekeloa Selat...
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The aim of the present study was to evaluate the dimensional accuracy and surface property of titanium casting obtained using a gypsum-bonded alumina investment. The experimental gypsum-bonded alumina investment with 20 mass% gypsum content mixed with 2 mass% potassium sulfate was used for five cp titanium castings and three Cu-Zn alloy castings. The accuracy, surface roughness (Ra), and reacti...
متن کاملEffect of burnout temperature on strength of gypsum-bonded investments.
OBJECTIVE To investigate the variation of the strength of gypsum-bonded dental investments with burnout temperature. METHODS The disc-rupture test was employed at burnout temperatures ranging from 450 to 800 degrees C for four products (Beauty Cast, Cristobalite, Novocast (all WhipMix) and Deguvest California (Degussa)). In this test, an investment disc is created inside an investment mold su...
متن کاملSoda-lime glass as a binder in reusable experimental investment for dental castings.
In this study, different glasses were investigated to improve reusable investments. Borosilicate glass (BSG) powder and soda-lime glass (SLG) powder were prepared by milling broken beakers and microscope slides, respectively, and used in experimental investments (I-BSG, I-SLG) by blending glass powder (10 wt%) with cristobalite (90 wt%). Some properties and casting fits were evaluated with comm...
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ژورنال
عنوان ژورنال: Dental Materials Journal
سال: 2003
ISSN: 1881-1361,0287-4547
DOI: 10.4012/dmj.22.412