INFLUENCE OF POLYMERIZATION FACTORS AND VARYING SHADE COMPOSITIONS OF BULK FILL RESIN-BASED NANOHYBRID COMPOSITES ON UNDER-SURFACE TEMPERATURE

SEFTY ARYANI HARAHAP; ASTRID YUDHIT; NASPATI HARAHAP; GRACIELLA CANDRA

doi:10.22159/ijap.2024.v16s2.09

Authors

SEFTY ARYANI HARAHAP Department of Dental Materials and Technology, Faculty of Dentistry, Universitas Sumatera Utara, Medan, Indonesia https://orcid.org/0000-0002-1717-3798
ASTRID YUDHIT Department of Dental Materials and Technology, Faculty of Dentistry, Universitas Sumatera Utara, Medan, Indonesia https://orcid.org/0000-0003-2011-6900
NASPATI HARAHAP Dental Student, Faculty of Dentistry, Universitas Sumatera Utara, Medan, Indonesia
GRACIELLA CANDRA Dental Student, Faculty of Dentistry, Universitas Sumatera Utara, Medan, Indonesia

DOI:

https://doi.org/10.22159/ijap.2024.v16s2.09

Keywords:

Under-surface temperature, Bulk fill resin-based nanohybrid composite, Polymerization factors, Shade

Abstract

Objective: This study aimed to evaluate the influence of polymerization factors and varying shade compositions of bulk-fill resin-based nanohybrid composites on under-surface temperature.

Methods: A total of 120 bulk-fill resin-based nanohybrid composite specimens (n=10) consisting of IVW (whiter), IVB (medium), and IVA (darker) shades were inserted in one bulk into a polyvinyl siloxane mold with a diameter of 5 mm and a thickness of 4 mm, divided into 2 subgroups of irradiation times (20 s and 30 s) and 2 subgroups of light curing sources (LED and QTH). When the specimen was polymerized, the under-surface temperature was measured with a K-type digital thermocouple. Data analyzed using Three-Way ANOVA and Tukey HSD Post Hoc tests.

Results: It showed significantly different QTHs that generated lower under-surface temperature than LEDs (P<0.05); whiter shade generated the highest temperature among all. However, there was no significant difference between 20 s and 30 s irradiation time (P>0.05).

Conclusion: It was concluded that the under-surface temperature generated by polymerization factors and varying shade compositions of bulk fill resin-based nanohybrid composites in this study was still acceptable and safe for dental pulp tissue.

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