鑄造活動義齒支架(framework)使用的金屬、翻模的材料和灌出翻模的包埋材料會影響義齒支架的密合度,下列何項組合最佳?
A低溫合金(lower-heat alloy)+可逆性水凝膠(reversible hydrocolloid)+石膏系包埋粉(gypsum-bonded investments)正確答案
B低溫合金(lower-heat alloy)+甘油基底膠體(glycerin-based colloid)+磷酸系包埋粉(phosphate-bonded investments)
C高溫合金(high-heat alloy)+甘油基底膠體(glycerin-based colloid)+石膏系包埋粉(gypsum-bonded investments)
D高溫合金(high-heat alloy)+可逆性水凝膠(reversible hydrocolloid)+磷酸系包埋粉(phosphate-bonded investments)
答案與詳解
