Effect of Fibres on Physico-Mechanical Properties of Bulk-Fill Resin Composites

被引:4
作者
Alshabib, Abdulrahman [1 ]
Silikas, Nick [2 ]
Algamaiah, Hamad [1 ]
Alayad, Abdullah S. [1 ]
Alawaji, Rahaf [3 ]
Almogbel, Shaikha [3 ]
Aldosari, Ahad [3 ]
Alhotan, Abdulaziz [4 ]
机构
[1] King Saud Univ, Coll Dent, Dept Restorat Dent, POB 60169, Riyadh 11545, Saudi Arabia
[2] Univ Manchester, Fac Biol Med & Hlth, Div Dent, Manchester M13 9PL, England
[3] King Saud Univ, Coll Dent, Dent Interns, POB 60169, Riyadh 11545, Saudi Arabia
[4] King Saud Univ, Coll Appl Med Sci, Dept Dent Hlth, POB 10219, Riyadh 12372, Saudi Arabia
关键词
resin composites; fibre reinforcement; water storage; flexural strength; absorption; solubility; DENTAL COMPOSITES; FLEXURAL STRENGTH; BIS-GMA; WATER; POLYMERIZATION; MODULUS; RESTORATIONS; DEGRADATION; MONOMERS; ADHESION;
D O I
10.3390/polym15163452
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Objective: To measure the flexural strength (FS) of bulk-fill resin composites and assess their long-term water absorption and solubility properties with and without the inclusion of short glass fibres. Methods: One resin composite, everX Flow with fibres, and four commercially available bulk-fill composites without fibres, namely, PALFIQUE, Activa, SDR Plus, and Filtek Bulk Fill One, were tested. Six specimens (2 x 2 x 25 mm) were fabricated for each material and stored in water for 1 day and 30 days to measure the flexural strength using a three-point bending test. To evaluate water absorption and solubility, circular disks measuring 15 x 2 mm (n = 5) were immersed in water for 60 days, and their weights were recorded periodically. After 60 days, the specimens were dried for an additional 21 days to determine solubility. Results: Flexural strength values ranged from 101.7 to 149.1 MPa. Significant distinctions were observed among the resin composites at the onset of the study (p < 0.05). The highest FS value was identified in everX Flow, while ACT exhibited the lowest (p < 0.05). However, the flexural strength values exhibited a significant decrease with increased storage time (p < 0.05), except for ACT, which demonstrated a noteworthy increase. Concerning water absorption and solubility, ACT displayed the highest absorption, while the range of solubility varied from 0.88 to 5.8 mu g/mm(3). ACT also had the highest solubility, whereas everX Flow exhibited negative solubility. Significance: The addition of short fibres, along with potential differences in matrix composition, enhanced the flexural strength of everX Flow. However, the substantial reduction in flexural strength observed in everX Flow and SDR following exposure to water corroborates the manufacturers' recommendation to apply a conventional resin composite cap on these materials.
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页数:13
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