Comparative Evaluation of Bond Strength, Micro hardness and Fluoride Release of Two Bioactive Restorative Materials

Document Type : Original Article

Authors

1 Demonstrator at Dental Biomaterials Department, Faculty of Dentistry Sinai University

2 Head of Dental Biomaterials Department Faculty of Dentistry Al-Azhar University for Girls

3 Lecturer of Dental Biomaterials Faculty of Dentistry Al-Azhar University for Girls

Abstract

Purpose: This study was aimed to evaluate and compare bond strength, microhardness, and fluoride release properties of two bioactive restorative materials: Zirconomer and Cention N. Materials and Methods: A total of 120 specimens of two bioactive restorative materials were used for this in-vitro study. Based on the bioactive material used, these specimens were divided. into two main groups (n =60): group 1 for.Cention N. material and group 2 for Zirconomer materials .Then each group .was further subdivided into three subgroups (n=20) according to the type of the performed test. Subgroup (A): Specimens for Shear bond strength (SBS)test, subgroup (B): Specimens for micro hardness test, and subgroup (C): Specimens for fluoride ion release (FIR) test. Results: Regarding the shear bond strength the results showed that there were statistically significant differences between the two tested groups (P ≤ 0.001). Cention N recorded a statistically higher mean SBS value (13.40±1.92 MPa) than Zirconomer (6.91±0.67 MPa).While regarding the microhardness test the results showed that the Zirconomer recorded a statistically higher mean VHN value than Cention N (63.49±2.07, 46.04±5.54 VHN respectively). Regarding FIR, the Cention N group, FIR mean value was (6.86±0.66 mg/L) after 1 Day while after 7 Days the mean value was (3.54±0.98 mg/L and after 14 Days the mean value was (0.49±0.20 mg/L). Conclusion: It was concluded that Cention N had improved bond strength to enamel compared to Zirconomer restorative material. Zirconomer had better microhardness than Cention N. Zirconomer has shown promising results owing to its high fluoride release compared to Cention N which might contribute to its anti-cariogenic property. Zirconomer could be the material of choice over Cention N in clinical situations where fluoride release is required in greater amounts.

Keywords

Al-Azhar Journal of Dentistry
Volume 11, Issue 3
July 2024
Pages 61-68

Files

Share

How to cite

Statistics