Evaluation of Post-Cementation Sensitivity Using Modified Gic with Chicken Eggshell Powder

Abstract

Metal-ceramic crowns are widely used in restorative dentistry, but post-cementation dentinal hypersensitivity remains a common clinical concern. This split-mouth clinical trial evaluated dentinal hypersensitivity in 15 participants receiving metal-ceramic crowns cemented with either conventional glass-ionomer cement (GIC) or GIC modified with chicken eggshell powder (CESP-GIC) over a 6-month period. Each participant received both cements on non-antagonistic contralateral quadrants, and sensitivity was assessed using the Schiff scale (0–3) at baseline, 1, 3, and 6 months with compressed air, cold-water rinse, and bite pressure stimuli, alongside patient-reported outcomes. After 6 months, CESP-GIC consistently showed lower sensitivity levels, with 86.7% of patients reporting no sensitivity to compressed air (vs. 66.7% for GIC), 93.3% showing no response to the bite test (P<0.068), and a statistically significant reduction in cold-water sensitivity (P<0.0283). Overall, incorporating chicken eggshell powder into GIC significantly reduced post-cementation hypersensitivity, particularly for cold stimuli, indicating that CESP-GIC is a promising biocompatible alternative to conventional GIC for managing post-cementation sensitivity in metal-ceramic crowns.