TY - JOUR
T1 - Influence of frequency on shear fatigue strength of resin composite to enamel bonds using self-etch adhesives
AU - Takamizawa, Toshiki
AU - Scheidel, Donal D.
AU - Barkmeier, Wayne W.
AU - Erickson, Robert L.
AU - Tsujimoto, Akimasa
AU - Latta, Mark A.
AU - Miyazaki, Masashi
PY - 2016/9/1
Y1 - 2016/9/1
N2 - Objectives: The purpose of this study was to determine the influence of different frequency rates on of bond durability of self-etch adhesives to enamel using shear fatigue strength (SFS) testing. Methods: A two-step self-etch adhesive (OX, OptiBond XTR), and two single step self-etch adhesives (GB, G-[U+04D5]nial Bond and SU, Scotchbond Universal) were used in this study. The shear fatigue strength (SFS) to enamel was obtained. A staircase method was used to determine the SFS values with 50,000 cycles or until failure occurred. Fatigue testing was performed at frequencies of 5 Hz, 10 Hz, and 20 Hz. For each test condition, 30 specimens were prepared for the SFS testing. Results: Regardless of the bond strength test method, OX showed significantly higher SFS values than the two single-step self-etch adhesives. For each of the three individual self-etch adhesives, there was no significant difference in SFS depending on the frequency rate, although 20 Hz results tended to be higher. Conclusions: Regardless of the self-etch adhesive system, frequencies of 5 Hz, 10 Hz, and 20 Hz produced similar results in fatigue strength of resin composite bonded to enamel using 50,000 cycles or until bond failure. Significance: Accelerated fatigue testing provides valuable information regarding the long term durability of resin composite to enamel bonding using self-etch adhesive system.
AB - Objectives: The purpose of this study was to determine the influence of different frequency rates on of bond durability of self-etch adhesives to enamel using shear fatigue strength (SFS) testing. Methods: A two-step self-etch adhesive (OX, OptiBond XTR), and two single step self-etch adhesives (GB, G-[U+04D5]nial Bond and SU, Scotchbond Universal) were used in this study. The shear fatigue strength (SFS) to enamel was obtained. A staircase method was used to determine the SFS values with 50,000 cycles or until failure occurred. Fatigue testing was performed at frequencies of 5 Hz, 10 Hz, and 20 Hz. For each test condition, 30 specimens were prepared for the SFS testing. Results: Regardless of the bond strength test method, OX showed significantly higher SFS values than the two single-step self-etch adhesives. For each of the three individual self-etch adhesives, there was no significant difference in SFS depending on the frequency rate, although 20 Hz results tended to be higher. Conclusions: Regardless of the self-etch adhesive system, frequencies of 5 Hz, 10 Hz, and 20 Hz produced similar results in fatigue strength of resin composite bonded to enamel using 50,000 cycles or until bond failure. Significance: Accelerated fatigue testing provides valuable information regarding the long term durability of resin composite to enamel bonding using self-etch adhesive system.
UR - http://www.scopus.com/inward/record.url?scp=84969730126&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84969730126&partnerID=8YFLogxK
U2 - 10.1016/j.jmbbm.2016.05.017
DO - 10.1016/j.jmbbm.2016.05.017
M3 - Article
C2 - 27232831
AN - SCOPUS:84969730126
VL - 62
SP - 291
EP - 298
JO - Journal of the Mechanical Behavior of Biomedical Materials
JF - Journal of the Mechanical Behavior of Biomedical Materials
SN - 1751-6161
ER -