DENTAL ELASTOMERIC IMPRESSION MATERIALS, AND GLASS USED THEREFOR

摘要

The MgO-Al ₂ O ₃ 4-component system glass for -SiO a MgO-CaO-Al ₂ O prepared by replacing the MgO with CaO in the glass of the three-component ₂₃ -SiO ₂ is disclosed. The glass is, and has excellent mechanical strength and excellent leading point. In addition, the dental impression material for light tack rubber is provided, including a glass filler.