TY - JOUR
T1 - Cavity adaptation of composite restorations prepared at crown and root
T2 - Optical assessment using SS-OCT
AU - Alshahni, Rima Zakzuk
AU - Shimada, Yasushi
AU - Zhou, Yuan
AU - Yoshiyama, Masahiro
AU - Sadr, Alireza
AU - Sumi, Yasunori
AU - Tagami, Junji
N1 - Funding Information:
This research was supported by Research Grant for Longevity Science (21A-8) from Ministry of Health, Labor and Welfare, Japan and by Grant-in-Aid for Scientific Research (16K11544) from Japan Society for the Promotion of Science (JSPS).
Funding Information:
This research was supported by Research Grant for
PY - 2019
Y1 - 2019
N2 - Evaluation of gap formation at the interfaces of a two-step self-etching adhesive with/without pre-etching was performed using swept-source optical coherence tomography (SS-OCT). Round cavities were prepared in bovine incisors at the middle (MC) and cervical (CC) thirds of the crown and the cervical third of the root (CR). Clearfil SE bond was directly applied to one group (SE) and another (PA) was pretreated with K-etchant gel. Following restoration by flowable composite resin, the teeth were thermally challenged and stored for 2 months. Interfacial gaps observed in the cross-sectional OCT images were analyzed and the bottom cavities exhibited increased gaps compared to the margin and dentin-enamel junction (DEJ). The CR site had a larger gap than at MC and CC in the SE group. DEJ separation at the MC was significantly smaller than that at CC in both groups. Therefore, gap formation depends on the cavity region, location, and bonding protocol.
AB - Evaluation of gap formation at the interfaces of a two-step self-etching adhesive with/without pre-etching was performed using swept-source optical coherence tomography (SS-OCT). Round cavities were prepared in bovine incisors at the middle (MC) and cervical (CC) thirds of the crown and the cervical third of the root (CR). Clearfil SE bond was directly applied to one group (SE) and another (PA) was pretreated with K-etchant gel. Following restoration by flowable composite resin, the teeth were thermally challenged and stored for 2 months. Interfacial gaps observed in the cross-sectional OCT images were analyzed and the bottom cavities exhibited increased gaps compared to the margin and dentin-enamel junction (DEJ). The CR site had a larger gap than at MC and CC in the SE group. DEJ separation at the MC was significantly smaller than that at CC in both groups. Therefore, gap formation depends on the cavity region, location, and bonding protocol.
KW - Bottom
KW - Dentin-enamel junction
KW - Gap
KW - SS-OCT
KW - Self-etch adhesive
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U2 - 10.4012/dmj.2018-265
DO - 10.4012/dmj.2018-265
M3 - Article
C2 - 31341148
AN - SCOPUS:85072945656
VL - 38
SP - 779
EP - 789
JO - Dental Materials Journal
JF - Dental Materials Journal
SN - 0287-4547
IS - 5
ER -