Abstract
A basic and clinical study was undertaken for the assessment of the clinical applicability of silver-added glass ionomer cement as a core material for the construction of abutment. Four kinds of sliver-added glass ionomer cements and one kind of glass ionomer-type base cement were used in the experiments.
Result of elemental analyzing by EPMA, a metal particle combined was 2 kinds of solid silver and amalgam alloy. No differences were found in knoop hardness, compressive strength and surface roughness by the types of cement. The radiopacity of silver-added glass ionomer cement was higher than that of glass ionomer-type base cement. Also no differences were found in the characteristics of cutting with a diamond point. The result of the questionnaire about cutting feeling of silver-added glass ionomer cements was better cut feeling than that of glass ionomer-type base cement.
When silver-added glass ionomer cement was applied to the construction of abutments for vital teeth, the dental pulp did not respond to the cement. When it was cut and hardened, excess cutting did not occur, and the same cutting feeling as when using natural teeth was obtained.
These findings suggest that silver-added glass ionomer cement is a clinically applicable core material for the construction of vital abutments.
