Rotational viscometry of a zinc phosphate and a zinc polyacrylate cement.
نویسندگان
چکیده
The rheological properties of a zinc phosphate and a zinc polyacrylate cement were investigated using a rotational viscometer. The effects of time, temperature, shear rate, and spindle geometry on the measured viscosities were evaluated. Results indicated that both cements exhibited Newtonian behavior.
منابع مشابه
Comparative Study of Microleakage of Full Crown Resterations Luted with Ariadent and Harward Zinc Phosphate Cements
Film thickness, strength, solubility and microleakage of dental cements are essential factors in cement selection by dentist. Since failure of metal ceramic restorations is mostly due to their marginal leakage and provious studies have shown that microleakage of Resin, Glassionomer and Zincphosphate cements are different, this study was done to compare the rate of microleakage between Ariadent ...
متن کاملThe evaluation of compressive strength in three brands of zinc phosphate cement in two different powder/liquid ratios
The evaluation of compressive strength in three brands of zinc phosphate cement in two different powder/liquid ratios Dr. M. Sahabi * - Dr. N. Homayunfar ** * Assistant Professor of Fixed Prosthodontics Dept., Faculty of Dentistry, Shaheed Beheshti University of Medical Sciences. ** Assistant Professor of Fixed Prosthodontics Dept. Faculty of Dentistry, Rafsanjan University of Medical Sciences....
متن کاملبررسی خواص فیزیکی و قابلیت انحلال و تجزیه پذیری سیمانهای حاوی عنصر روی در دندانپزشکی ترمیمی و مقایسه آنها با مقادیر استاندارد
Statement of Problem: Zinc contained cements are so important among dental material as they have many indications and used in different ways therefore evaluation of their physical properties is so important in dentistry.Purpose: The purpose of this research was to measure some physical properties of zinc-contained cements used in restorative dentistry. These cements included: Zinc oxide-eugenol...
متن کاملEffects of cement bases on the stresses and deflections in composite restorations.
A model was used to investigate stresses and deflections in cement bases and in a composite restorative material induced in a posterior Class I restoration. Deflections in the composite were highest when it was supported by a base with a low modulus; however, the maximum tensile stress (12 MN/meter2) occurring in the composite restoration at the interface with the base was well below the maximu...
متن کاملبررسی اثر زمان‌های مختلف اولتراسونیک بر گیر پست‌های پیش ساخته سمان شده با دو سمان مختلف
Background and Aims: In case of nonsurgical endodontic re-treatment or replacing a restoration, one of the best methods for removing post from the canal is using an ultrasonic vibration. The aim of this study was to evaluate the effect of ultrasonic vibration time on the retention of post luted with zinc phosphate or glass ionmer cements. Materials and Methods: 96 sound extracted lower prem...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Journal of dental research
دوره 56 7 شماره
صفحات -
تاریخ انتشار 1977