The Linear Setting Expansions of the Dental Stone and Whose Initial Setting Times
نویسندگان
چکیده
In this study, two improved dental stones were used to fabricate master casts and dies. The tested fabrications were BegoStone (Bego Bremer, Goldschlägerei Wilh. Herbst GmbH and Co. Wilhelm HerbstStrabe 1 D 28359 Bremen Germany), Moldano (Heraeus Kulzer GmbH and Co. KG Gruner Weg 11 D-63450 Hanau Germany) and plaster of paris (BMT, PK 121 Sivas, Turkey). Together with the manufacturer’s values, the setting time and setting expansion amounts of the dental stone and plaster used in this study are shown in Table 1.
منابع مشابه
بررسی مقایسه‌ای زمان گیرش، انبساط ناشی از گیرش و استحکام فشاری کست‌های گچی حاصل از اختلاط پودر گچ و آب مقطر با پودر گچ و محلول هیپوکلریت سدیم 5/0%
Objective: Previous studies have demonstrated that dental stone casts can be disinfected by replacing 10v% of required water with 5.25% sodium hypochlorite solution. This comparative study evaluated physical properties of dental stone models produced by replacing distilled water with sodium hypochlorite. Methods: In this in-vitro experimental study, a total of 45 dental stone models were pr...
متن کاملFORMULATION AND PREPARATION OF A NOVEL DUST FREE FAST SETTING DENTAL ALGINATE IMPRESSION MATERIAL
Abstract: A novel dust free alginate impression material was formulated and prepared, comprising an alginate polyvinylpyrrolidone and tetraflouroethylene resins, a mixture of liquid paraffin and dimethylpolysiloxane oil as the dust generation controlling agents and processed diatomaceous earth filler which was obtained from Iranian ore. No dusting was detected during the mixing of the powde...
متن کاملمقایسه زمان ستینگ یک نوع MTA ایرانی با MTA خارجی
Background and Aims: According to many uses of MTA in different treatments, studying about its properties like the setting time, is of great importance. The aim of this study was to compare the initial and final setting time of an Iranian MTA and a foreign MTA. Materials and Methods: Seven samples were in each group; for measurement of initial and final setting time of MTAs, a mold with dime...
متن کاملMechanical Behavior of Concrete, Made with Micro-Nano Air Bubbles
Nano materials have been widely used in laboratory and industrial scales in order to improve various properties of concrete and concrete mixture. The mainstream practice of the researches in this field is to add metallic nano-particles into the concrete mixture. The present research focuses on adding Micro-Nano Air Bubbles (MNAB) into water before mixing it with aggregate and cement mixtures. I...
متن کاملTarget setting in the process of merging and restructuring of decision-making units using multiple objective linear programming
This paper presents a novel approach to achieving the goals of data envelopment analysis in the process of reconstruction and integration of decision-making units by using multiple objective linear programming. In this regard, first, we review inverse data envelopment analysis models for data reconstruction and integration. We present a model with multi-objective linear programming structure in...
متن کامل