高辐照度和短曝光固化时间对块状填充树脂基复合材料断裂韧性的影响：一项体外研究
Effect of high irradiance and short exposure curing time on the fracture toughness of bulk-fill resin-based composite: an in vitro study.
摘要(中文译文)
本研究旨在确定高辐照度和短曝光时间对 bulk-fill 树脂基复合材料（RBCs）断裂韧性的影响。测试了三种 RBC：Tetric PowerFill（TPF；Ivoclar Vivadent）、Opus Bulk Fill APS（OBF；FGM Dental Group）和 Filtek One Bulk Fill（FOB；Solventum）。使用断裂韧性模具制备了 60 个单边切口圆盘试样。每组包含 20 个样本，分为两个亚组（n = 10）。使用 Bluephase PowerCure（Ivoclar Vivadent）对 RBC 进行光固化，或采用高辐照度模式照射 3 秒（“3 秒固化”），或采用“高功率”模式按照制造商推荐时间照射（TPF，10 秒；OBF，30 秒；FOB，20 秒）。使用分光光度计测量峰值光谱波长。在万能试验机上测试试样，数据采用双因素方差分析和 Bonferroni 检验进行分析（α = 0.05）。辐射曝光值（J/cm²）在 3 秒模式下为 9.5，在 10、20 和 30 秒（高功率模式）下分别为 12.4、24.8 和 37.1。FOB（20 秒和 3 秒分别为 4.22 和 3.79 MPa∙m0.5）的平均断裂韧性最高，而 OBF 最低（30 秒和 3 秒分别为 2.01 和 2.10 MPa∙m0.5）。TPF 产生中间结果（10 秒和 3 秒分别为 2.72 和 2.70 MPa∙m0.5）。曝光时间对 TPF 和 OBF 无影响，而 3 秒曝光显著降低了 FOB 的断裂韧性。所测试的 RBC 无论曝光时间如何，其断裂韧性值均不同。高辐照度和短曝光可根据所测试的 RBC 降低断裂韧性。
Abstract
This study aimed to determine the effect of high irradiance and short exposure time on the fracture toughness of bulk-fill resin-based composites (RBCs). Three RBCs were tested: Tetric PowerFill (TPF; Ivoclar Vivadent), Opus Bulk Fill APS (OBF; FGM Dental Group), and Filtek One Bulk Fill (FOB; Solventum). Sixty single-edge-notched disc specimens were prepared using a fracture toughness mold. Each group consisted of 20 samples, divided into two subgroups (n = 10). The RBCs were lightcured either for 3 seconds in high-irradiance mode ('3s cure') or for the manufacturer-recommended times (TPF, 10 seconds; OBF, 30 seconds; FOB, 20 seconds) in 'high power' mode using the Bluephase PowerCure (Ivoclar Vivadent). The peak spectral wavelength was measured using a spectrophotometer. Specimens were tested on a universal testing machine, and data were analyzed by two-way analysis of variance and Bonferroni test (α = 0.05). Radiant exposure values (J/cm²) were 9.5 for the 3-second mode and 12.4, 24.8, and 37.1 for 10, 20, and 30 seconds (high power mode), respectively. FOB (4.22 and 3.79 MPa∙m0.5 for 20 and 3 seconds) had the highest mean fracture toughness, while OBF showed the lowest (2.01 and 2.10 MPa∙m0.5 for 30 and 3 seconds). TPF produced intermediate results (2.72 and 2.70 MPa∙m0.5 for 10 and 3 seconds). Exposure time did not affect TPF and OBF, while the 3-second exposure significantly reduced the fracture toughness for FOB. The RBCs tested had different fracture toughness values regardless of exposure time. High irradiance and short exposure can reduce fracture toughness depending on the RBC tested.
如何引用
AMA
Beatriz Ometto Sahadi, Tainah Oliveira Rifane, Carolina Bosso André, Vitaliano Gomes Araújo-Neto, Richard Thomas Bengt Price, Marcelo Giannini. Effect of high irradiance and short exposure curing time on the fracture toughness of bulk-fill resin-based composite: an in vitro study.. Restorative dentistry & endodontics. 2026; doi:10.5395/rde.2026.51.e23.
APA
Beatriz Ometto Sahadi, Tainah Oliveira Rifane, Carolina Bosso André, Vitaliano Gomes Araújo-Neto, Richard Thomas Bengt Price, Marcelo Giannini (2026). Effect of high irradiance and short exposure curing time on the fracture toughness of bulk-fill resin-based composite: an in vitro study.. Restorative dentistry & endodontics. https://doi.org/10.5395/rde.2026.51.e23
GB/T 7714
Beatriz Ometto Sahadi, Tainah Oliveira Rifane, Carolina Bosso André, Vitaliano Gomes Araújo-Neto, Richard Thomas Bengt Price, Marcelo Giannini. Effect of high irradiance and short exposure curing time on the fracture toughness of bulk-fill resin-based composite: an in vitro study.[J]. Restorative dentistry & endodontics, 2026 doi:10.5395/rde.2026.51.e23.
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