Microtensile Bond Strength of Fiber-Reinforced and Particulate Filler Composite to Coronal and Pulp Chamber Floor Dentin

Autor: Matteo Basso, Samir Čimić, Andrei C. Ionescu, Anja Baraba, Eugenio Brambilla, Ivana Miletić
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Molar
Technology
Materials science
Composite number
02 engineering and technology
Fiber-reinforced composite
Article
03 medical and health sciences
0302 clinical medicine
microtensile bond strength test
fiber-reinforced composite
particulate filler composite
stomatognathic system
Dentin
medicine
General Materials Science
Fiber
Composite material
fiber-reinforced composite
Microscopy
QC120-168.85
Enamel paint
Bond strength
QH201-278.5
030206 dentistry
Engineering (General). Civil engineering (General)
021001 nanoscience & nanotechnology
TK1-9971
stomatognathic diseases
medicine.anatomical_structure
Descriptive and experimental mechanics
visual_art
Coronal plane
visual_art.visual_art_medium
Electrical engineering. Electronics. Nuclear engineering
TA1-2040
0210 nano-technology
particulate filler composite
Zdroj: Materials
Volume 14
Issue 9
Materials, Vol 14, Iss 2400, p 2400 (2021)
ISSN: 1996-1944
DOI: 10.3390/ma14092400
Popis: This ex vivo study aimed to compare the microtensile bond strength of fiber-reinforced and particulate filler composite to coronal and pulp chamber floor dentin using a self-etching adhesive system. Coronal dentin of 40 human molar teeth was exposed by cutting occlusal enamel with a low-speed saw. Teeth were then randomly divided into two groups (n = 20). The first group was left as is, while in the second group, pulp chamber floor dentin was exposed by trepanation. After placement of a self-etching adhesive system (G-aenial Bond, GC, Tokyo, Japan), groups were further divided into two sub-groups (n = 10) according to the type of composite: fiber-reinforced composite (EP, everX Posterior, GC, Tokyo, Japan) and particulate filler composite (GP, G-aenial Posterior, GC, Tokyo, Japan). Then, composite blocks were built up. Sticks (1.0 × 1.0 mm2) were obtained from each specimen by sectioning, then microtensile bond strength (μTBS) test was performed. Statistical analysis included one-way ANOVA test and Student’s t-test (p <
0.05). μTBS values were 22.91 ± 14.66 and 24.44 ± 13.72 MPa on coronal dentin, 14.00 ± 5.83 and 12.10 ± 8.89 MPa on pulp chamber floor dentin for EP and GP, respectively. Coronal dentin yielded significantly higher μTBS than pulp chamber floor dentin (p <
0.05), independently from the tested composites.
Databáze: OpenAIRE
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