Effect of Different Curing Times and Intensities on the Performance of Compound Class II Bulk-fill Resin Composite Restorations: An In-Vivo Study
Azazy, R., Hamza, O., Fahim, S., Tolba, Z. (2024). Effect of Different Curing Times and Intensities on the Performance of Compound Class II Bulk-fill Resin Composite Restorations: An In-Vivo Study. EKB Journal Management System, 70(4), 4057-4069. doi: 10.21608/edj.2024.316384.3183
Roaa Mohamed Sabry Azazy; Omaima Safwat Hamza; Shereen Essameldein Fahim; Zeinab Omar Tolba. "Effect of Different Curing Times and Intensities on the Performance of Compound Class II Bulk-fill Resin Composite Restorations: An In-Vivo Study". EKB Journal Management System, 70, 4, 2024, 4057-4069. doi: 10.21608/edj.2024.316384.3183
Azazy, R., Hamza, O., Fahim, S., Tolba, Z. (2024). 'Effect of Different Curing Times and Intensities on the Performance of Compound Class II Bulk-fill Resin Composite Restorations: An In-Vivo Study', EKB Journal Management System, 70(4), pp. 4057-4069. doi: 10.21608/edj.2024.316384.3183
Azazy, R., Hamza, O., Fahim, S., Tolba, Z. Effect of Different Curing Times and Intensities on the Performance of Compound Class II Bulk-fill Resin Composite Restorations: An In-Vivo Study. EKB Journal Management System, 2024; 70(4): 4057-4069. doi: 10.21608/edj.2024.316384.3183

Effect of Different Curing Times and Intensities on the Performance of Compound Class II Bulk-fill Resin Composite Restorations: An In-Vivo Study

Egyptian Dental Journal
Volume 70, Issue 4 - Serial Number 5, October 2024, Page 4057-4069  XML PDF (1.41 MB)
Document Type: Original Article
DOI: 10.21608/edj.2024.316384.3183
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Authors
Roaa Mohamed Sabry Azazyorcid 1; Omaima Safwat Hamzaorcid 2; Shereen Essameldein Fahimorcid 3; Zeinab Omar Tolba email orcid 4
1MSc. Student, Conservative Dentistry Department, Faculty of Dentistry, Cairo University, Cairo, Egypt
2Professor, Conservative Dentistry Department, Faculty of Dentistry, Cairo University, Cairo, Egypt
3Lecturer, Conservative Dentistry, Faculty of Dentistry, October 6 University, 6th of October City, Egypt.
4Lecturer, Conservative Dentistry Department, Faculty of Dentistry, Cairo University, Cairo, Egypt
Abstract
Objective: To compare effect of high-intensity (2200 mW/cm2) for 1 s with conventional intensity light-curing (1200 mW/cm2) for 20 s on clinical performance of bulk-fill resin composite restorations in compound class II cavities over 12 months follow-up. Material and methods: A total of 28 class II cavities were randomly restored with bulk-fill resin composite (n=14/group) and cured either with high-intensity (2200 mW/cm2) for 1 s (Intervention) or conventional intensity (1200 mW/cm2) for 20 s (Comparator). Modified USPHS criteria for marginal discoloration, marginal adaptation, secondary caries and postoperative sensitivity were used in the evaluation of restorations at baseline (1 week), 6 and 12 months. Results: There was no statistically significant difference between the two curing protocols at different follow-up intervals as regards the evaluated criteria (P > 0.05). High light intensity (2200 mW/cm2) for 1 s showed more risk (score B) when compared to conventional intensity (1200 mW/cm2) for 20 s, regarding marginal discoloration (RR = 5, P = 0.2851), marginal adaptation (RR = 2, P = 0.3737) and secondary caries (RR = 3, P = 0.4900), except for postoperative sensitivity with no risk for scores B and C (RR = 1, P = 1.0000). Conclusion: High-intensity light-curing (2200 mW/cm2) for 1 s has comparable clinical performance to conventional intensity light-curing (1200 mW/cm2) for 20 s for bulk-fill resin composite restorations in class II cavities.
Keywords
Bulk-fill; conventional light-curing; high-intensity light-curing; I-LED; short exposure time light-curing
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