Objective: To evaluate the effect of different cement gap on retention of zirconia crowns cemented with resin cement. Materials and methods: Thirty sound natural human molar teeth were collected and mounted in an acrylic mold. Teeth were prepared through a Computerized Numerical Control CNC, and then zirconia crowns fabricated by cad/cam. Samples were divided into 3 subgroups according to the cement gap(CG) (n=10): 25µm (CG25), 50µm (CG50), 100µm (CG100). Zirconia crowns cemented with Breeze Self-Adhesive Resin Cement. Samples were thermocycled for 5000 cycles between two water baths at 5°C and 55°C with a dwell time of 20 seconds and 10 seconds of transfer time. Samples were subjected to tensile test using universal testing machine, dislodgment force recorded in MPa. Results: No significant difference was found between mean pull-out bond strength at different cement gaps. Conclusion: The cement gap did not affect the retention of zirconia crowns cemented with resin cement.
Elbieh, A., Othman, H., & Haggag, K. (2020). Effect of Cement Gap on the Retention of Zirconia Crowns. Al-Azhar Journal of Dental Science, 23(3), 235-240. doi: 10.21608/ajdsm.2020.24992.1009
MLA
Ahmed Yousef Elbieh; Hesham Ibrahim Othman; Khaled Mohamed Haggag. "Effect of Cement Gap on the Retention of Zirconia Crowns". Al-Azhar Journal of Dental Science, 23, 3, 2020, 235-240. doi: 10.21608/ajdsm.2020.24992.1009
HARVARD
Elbieh, A., Othman, H., Haggag, K. (2020). 'Effect of Cement Gap on the Retention of Zirconia Crowns', Al-Azhar Journal of Dental Science, 23(3), pp. 235-240. doi: 10.21608/ajdsm.2020.24992.1009
VANCOUVER
Elbieh, A., Othman, H., Haggag, K. Effect of Cement Gap on the Retention of Zirconia Crowns. Al-Azhar Journal of Dental Science, 2020; 23(3): 235-240. doi: 10.21608/ajdsm.2020.24992.1009
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