技工室加工出来的义齿基托内有明显的气泡。为什么会发生这样的情况?哪些部位最容易产生气泡?为什么?
查看答案
根据义齿基托树脂聚合固化方式分为______、_______、________、_______四种。目前,广泛使用的义齿基托树脂是________树脂及其改性产品。
在社会主义市场经济条件下,国民经济的微观搞活与宏观调控是相辅相成、相互统一的关系。()
Which statement is correct regarding the degree of polymerization of methyl methacrylate in denture base acrylic resin()
A. no residual monomer exists after processing a heat activated acrylic resin at 165℃ for 8 hours
B. more residual monomer exists in a denture that is processed by chemical activation than by heat activation
C. residual monomer in a denture can only be eliminated by raising the temperature to 212℃ for 1 hour after processing.
D. excessive brittleness
一般光固化基托树脂对波长为多少的蓝色光最为敏感()
A. 520~630nm
B. 430~510nm
C. 320~410nm
D. 240~310nm