Distortion of a MOD pattern caused by the setting and hygroscopic expansion of the investment in the casting ring. II. Influence of W/P ratio, pattern position in the ring, and the condition of the asbestos lining.
نویسندگان
چکیده
MOD patterns are distorted by expansion of the investment during setting in the casting ring. Using a simple idealized epoxy resin MOD pattern and two-dimensional photoelasticity, this investigation reports the distortion under several conditions, including W/P ratios, cases with and without asbestos lining, number of asbestos layers, condition of the asbestos lining (dry, wet, and applied silicone oil and vaseline), and the position of the MOD pattern in the ring.
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ورودعنوان ژورنال:
- Dental materials journal
دوره 1 1 شماره
صفحات -
تاریخ انتشار 1982