TY - JOUR
T1 - Bonding effectiveness of two contemporary self-etch adhesives to enamel and dentin
AU - Mine, Atsushi
AU - De Munck, Jan
AU - Cardoso, Marcio V.
AU - Van Landuyt, Kirsten L.
AU - Poitevin, André
AU - Kuboki, Takuo
AU - Yoshida, Yasuhiro
AU - Suzuki, Kazuomi
AU - Lambrechts, Paul
AU - Van Meerbeek, Bart
N1 - Funding Information:
We thank Prof. Johan Billen (Laboratory of Entomology, Department Biology, Catholic University of Leuven) for extensive technical assistance (TEM). Dr. Mine has been granted a scholarship of the Government of Flanders to conduct research at the Leuven BIOMAT Research Cluster of the Catholic University of Leuven. This study was supported in part by 3M ESPE.
Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2009/11
Y1 - 2009/11
N2 - Objectives: Among contemporary adhesives, self-etch adhesives have been adopted by general practitioners for routine adhesive restorative purposes, mainly because of their ease of use. However, many versions that differ for their clinical application procedure, pH, number of components, etc., are currently available on the market. The purpose of this study was to determine the bonding effectiveness of two new self-etch adhesives (Adper Easy Bond and Adper ScotchBond SE, 3M ESPE) to enamel and dentin using a micro-tensile bond strength (μTBS) protocol and to characterise the interfacial ultra-structure at enamel and dentin using transmission electron microscopy (TEM). Methods: The adhesives were applied onto coronal human enamel and dentin surfaces and built up with the micro-hybrid resin composite Z100 (3M ESPE). The 'gold-standard' two-step self-etch adhesive Clearfil SE Bond (Kuraray) served as control. Specimens were sectioned to sticks and trimmed at the interface to a cylindrical hour-glass shape ('trimmed' micro-specimens). Non-demineralized and demineralized TEM sections through the adhesive-dentin/enamel interface were prepared by ultra-microtomy. Results: The μTBS of the two self-etch adhesives to enamel was statistically significantly lower than that of the control. To dentin, the μTBS of Adper Easy Bond was significantly lower than that of Adper ScotchBond SE and the control. TEM showed a tight interface to enamel for all three self-etch adhesives. A relatively thick, completely demineralized and acid-resistant hybrid layer was formed at dentin by Adper ScotchBond SE, whereas the interaction of Adper Easy Bond was much shallower, and comparable to that of so-called 'ultra-mild' self-etch adhesives. Some degree of spot- and cluster-like nano-leakage was observed for both adhesives, but did not differ in extent and form from that observed for the control. Conclusions: Although the new two self-etch adhesives revealed a tight interaction at both enamel and dentin, their bond strength to both tooth tissues was generally lower than that of the control adhesive. Nevertheless, their bonding effectiveness appears in line with other simplified self-etch adhesives.
AB - Objectives: Among contemporary adhesives, self-etch adhesives have been adopted by general practitioners for routine adhesive restorative purposes, mainly because of their ease of use. However, many versions that differ for their clinical application procedure, pH, number of components, etc., are currently available on the market. The purpose of this study was to determine the bonding effectiveness of two new self-etch adhesives (Adper Easy Bond and Adper ScotchBond SE, 3M ESPE) to enamel and dentin using a micro-tensile bond strength (μTBS) protocol and to characterise the interfacial ultra-structure at enamel and dentin using transmission electron microscopy (TEM). Methods: The adhesives were applied onto coronal human enamel and dentin surfaces and built up with the micro-hybrid resin composite Z100 (3M ESPE). The 'gold-standard' two-step self-etch adhesive Clearfil SE Bond (Kuraray) served as control. Specimens were sectioned to sticks and trimmed at the interface to a cylindrical hour-glass shape ('trimmed' micro-specimens). Non-demineralized and demineralized TEM sections through the adhesive-dentin/enamel interface were prepared by ultra-microtomy. Results: The μTBS of the two self-etch adhesives to enamel was statistically significantly lower than that of the control. To dentin, the μTBS of Adper Easy Bond was significantly lower than that of Adper ScotchBond SE and the control. TEM showed a tight interface to enamel for all three self-etch adhesives. A relatively thick, completely demineralized and acid-resistant hybrid layer was formed at dentin by Adper ScotchBond SE, whereas the interaction of Adper Easy Bond was much shallower, and comparable to that of so-called 'ultra-mild' self-etch adhesives. Some degree of spot- and cluster-like nano-leakage was observed for both adhesives, but did not differ in extent and form from that observed for the control. Conclusions: Although the new two self-etch adhesives revealed a tight interaction at both enamel and dentin, their bond strength to both tooth tissues was generally lower than that of the control adhesive. Nevertheless, their bonding effectiveness appears in line with other simplified self-etch adhesives.
KW - Adhesion
KW - Bond strength
KW - Dentin
KW - Enamel
KW - Mild self-etch adhesive
KW - Strong self-etch adhesive
KW - TEM
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U2 - 10.1016/j.jdent.2009.06.020
DO - 10.1016/j.jdent.2009.06.020
M3 - Article
C2 - 19683377
AN - SCOPUS:70349169571
VL - 37
SP - 872
EP - 883
JO - Journal of Dentistry
JF - Journal of Dentistry
SN - 0300-5712
IS - 11
ER -