Open AccessComparison of capsule-mixed versus hand-mixed glass ionomer cements Part II: Porosity
Author(s) -
Samantha Arnold,
Glynn Dale Buchanan,
Nichola Warren,
N Potgieter
Publication year - 2022
Publication title -
sadj
Language(s) - English
Resource type - Journals
eISSN - 2519-0105
pISSN - 1029-4864
DOI - 10.17159/2519-0105/2022/v77no2a2
Subject(s) - glass ionomer cement , porosity , materials science , composite material , molar , dentistry , volume (thermodynamics) , cement , medicine , physics , quantum mechanics
Glass ionomer restorative cements (GIC) are routinely used in dental practice. During mixing, air incorporation may lead to higher porosity with subsequent weakening of the cement. The degree of porosity will determine whether capsule-mixed or hand-mixed GIC are mechanically stronger for clinical use. To compare the porosity of four commercially available dental glass ionomer cements, supplied in both hand mix and capsule-mix formulations, by evaluating number of voids (%), total volume of voids (mm3 ) and volume percentage of voids (%). Eighty samples were manufactured from hand-mixed GIC: Riva Self Cure; Fuji IX GP ; Ketac Universal, Ketac Molar Easymix, and equivalent capsule-mixed GIC: Riva Self Cure; Fuji IX GP ; Ketac Universal Aplicap and Ketac Molar Aplicap. Micro-CT scanning was used to evaluate porosity. The number of voids (mm3 ), total volume of voids (mm3 ) and the volume percentage of voids (%) were calculated.