Salem, S., Asaad, R. (2019). EFFECT OF NANOPARTICLES MODIFIED GLASS IONOMER CEMENT ON THE COLOUR AND SHEAR BOND STRENGTH OF LITHIUM DISILICATE CERAMIC. test, 65(Issue 1 - January (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics)), 813-824. doi: 10.21608/edj.2019.72868
Shereen Kotb Salem; Rasha Sayed Asaad. "EFFECT OF NANOPARTICLES MODIFIED GLASS IONOMER CEMENT ON THE COLOUR AND SHEAR BOND STRENGTH OF LITHIUM DISILICATE CERAMIC". test, 65, Issue 1 - January (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics), 2019, 813-824. doi: 10.21608/edj.2019.72868
Salem, S., Asaad, R. (2019). 'EFFECT OF NANOPARTICLES MODIFIED GLASS IONOMER CEMENT ON THE COLOUR AND SHEAR BOND STRENGTH OF LITHIUM DISILICATE CERAMIC', test, 65(Issue 1 - January (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics)), pp. 813-824. doi: 10.21608/edj.2019.72868
Salem, S., Asaad, R. EFFECT OF NANOPARTICLES MODIFIED GLASS IONOMER CEMENT ON THE COLOUR AND SHEAR BOND STRENGTH OF LITHIUM DISILICATE CERAMIC. test, 2019; 65(Issue 1 - January (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics)): 813-824. doi: 10.21608/edj.2019.72868

EFFECT OF NANOPARTICLES MODIFIED GLASS IONOMER CEMENT ON THE COLOUR AND SHEAR BOND STRENGTH OF LITHIUM DISILICATE CERAMIC

Egyptian Dental Journal
Article 46, Volume 65, Issue 1 - January (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics), January 2019, Pages 813-824    PDF (562.52 K)
Document Type: Original Article
DOI: 10.21608/edj.2019.72868
Authors
Shereen Kotb Salem1; Rasha Sayed Asaad* 2
1Lecturer of Fixed Prosthodontics. Faculty of Dentistry, October 6 University
2Oral and Maxillofacial Prosthodontic Department, Faculty of Dentistry,King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
Abstract
The effect of glass ionomer cement modified by nanoparticles on the bond strength and colour of lithium disilicate ceramic was studied. Glass ionomer cement modified by nanosilver or nanogold, glass ionomer cement and IPS e.max CAD A2 were used. Thirty e.max CAD discs were constructed. The samples were divided into 3 groups, the first group, 10 samples (control group) used non modified glass ionomer cement (GIC), the second and third groups, 10 samples each used modified glass ionomer cement : nano silver (NSGIC), nanogold (NGGIC). The samples were then subdivided according to the test to which they will be subjected: colour test - shear bond strength test (5 samples each).The samples subjected to colour test were cemented to a composite discs with a shade A2 while those subjected to shear bond strength test were cemented to dentine, using the 3 tested types of glass ionomer.
Results showed that ΔE of all the tested samples recorded values in the range of clinical acceptability. NGGIC group showed less ΔE than NSGIC group compared to the control group. Also, the results showed no statistical significant difference in shear bond strength between the control group (GIC) and the two experimental groups (NSGIC) and (NGGIC).
Conclusion: The addition of nanoparticles to glass ionomer cement resulted in ΔE within the clinical acceptance. Also, they showed no significant difference as regards to shear bond strength.
Keywords
Glass Ionomer; silver; Gold; Nanoparticles; bond strength; colour
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