-
-
J Korean Dent Assoc. 1985;23(7):577-583. Published online July 31, 1985.
- 반복 사용된 치과용 비귀금속에 의한 주조체의 식각표면에 대한 연구
-
이선형
-
서울대학교 치과대학 보철학교실
-
- The Etched Surface of the Repeatedly Cast Dental Base Metal Alloy
-
Sun-Hyung Lee
-
Dept. of Prosthodontics, College of Dentistry Seoul National University
-
- Abstract
- The purpose of this investigation was to evaluate scanning electron micrographs of repeatedly cast base metal alloy. For this study two Ni-Cr-Be alloys were used; Rexillium III and Verabond.
They were repeatedly cast without addition o new alloy melting with an electric resistant furnace (Castron 8, Yoshida dental equipment Mfg.Co.).
They were etched with 10% H₂SO₄ Sol. at 300mA/㎠ for 3 minutes with the use of metal etching unit Oxyetch (OXY dental product Inc.), and ultrasonic cleaning in 18% HC1 Sol. was done.
Etched surfaces were examined under a SEM at x 200 and x 750.
The surfaces are shown in legends.
Keywords :
