TY - JOUR
T1 - Influence of hydrostatic pulpal pressure on the microtensile bond strength of all-in-one self-etching adhesives
AU - Hosaka, Keiichi
AU - Nakajima, Masatoshi
AU - Monticelli, Francesca
AU - Carrilho, Marcela
AU - Yamauti, Monica
AU - Aksornmuang, Juthatip
AU - Nishitani, Yoshihiro
AU - Tay, Franklin R.
AU - Pashley, David H.
AU - Tagami, Junji
PY - 2007
Y1 - 2007
N2 - Purpose: To evaluate the microtensile bond strength (μTBS) of two all-in-one self-etching adhesive systems and two self-etching adhesives with and without simulated hydrostatic pulpal pressure (PP). Materials and Methods: Flat coronal dentin surfaces of extracted human molars were prepared. Two all-in-one self-etching adhesive systems, One-Up Bond F (OBF; Tokuyama) and Clearfil S3 Bond (Tri-S, Kuraray Medical) and two self-etching primer adhesives, Clearfil Protect Bond (PB; Kuraray) and Clearfil SE Bond (SE; Kuraray) were applied to the dentin surfaces according to manufacturers' instructions under either a pulpal pressure (PP) of zero or 15 cm H 2O. A hybrid resin composite (Clearfil AP-X, Kuraray) was used for the coronal buildup. Specimens bonded under PP were stored in water at 37°C under 15 cm H2O for 24 h. Specimens not bonded under PP were stored under a PP of zero. After storage, the bonded specimens were sectioned into slabs that were trimmed to hourglass-shaped specimens, and were subjected to microtensile bond testing (μTBS). The bond strength data were statistically analyzed using two-way ANOVA and the Holm-Sidak method for multiple comparison tests (α = 0.05). The surface area percentage of different failure modes for each material was also statistically analyzed with three one-way ANOVAs and Tukey's multiple comparison tests. Results: The μTBS of OBF and Tri-S fell significantly under PP. However, in the PB and SE bonded specimens under PP, there were no significant differences compared with the control groups without PP. Conclusions: The μTBS of the two all-in-one adhesive systems decreased when PP was applied. However, the μTBS of both self-etching primer adhesives did not decrease under PP.
AB - Purpose: To evaluate the microtensile bond strength (μTBS) of two all-in-one self-etching adhesive systems and two self-etching adhesives with and without simulated hydrostatic pulpal pressure (PP). Materials and Methods: Flat coronal dentin surfaces of extracted human molars were prepared. Two all-in-one self-etching adhesive systems, One-Up Bond F (OBF; Tokuyama) and Clearfil S3 Bond (Tri-S, Kuraray Medical) and two self-etching primer adhesives, Clearfil Protect Bond (PB; Kuraray) and Clearfil SE Bond (SE; Kuraray) were applied to the dentin surfaces according to manufacturers' instructions under either a pulpal pressure (PP) of zero or 15 cm H 2O. A hybrid resin composite (Clearfil AP-X, Kuraray) was used for the coronal buildup. Specimens bonded under PP were stored in water at 37°C under 15 cm H2O for 24 h. Specimens not bonded under PP were stored under a PP of zero. After storage, the bonded specimens were sectioned into slabs that were trimmed to hourglass-shaped specimens, and were subjected to microtensile bond testing (μTBS). The bond strength data were statistically analyzed using two-way ANOVA and the Holm-Sidak method for multiple comparison tests (α = 0.05). The surface area percentage of different failure modes for each material was also statistically analyzed with three one-way ANOVAs and Tukey's multiple comparison tests. Results: The μTBS of OBF and Tri-S fell significantly under PP. However, in the PB and SE bonded specimens under PP, there were no significant differences compared with the control groups without PP. Conclusions: The μTBS of the two all-in-one adhesive systems decreased when PP was applied. However, the μTBS of both self-etching primer adhesives did not decrease under PP.
KW - All-in-one adhesives
KW - Dentin
KW - Microtensile bond strength
KW - Pulpal pressure
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M3 - Article
C2 - 18297824
AN - SCOPUS:36048951747
SN - 1461-5185
VL - 9
SP - 437
EP - 442
JO - Journal of Adhesive Dentistry
JF - Journal of Adhesive Dentistry
IS - 5
ER -