Influence of temporary cements on bond strength between resin-based luting agents and dentin.
OBJECTIVE
To examine the influence of temporary cements on the strength of the bond formed between resin-based luting agents and dentin.


METHODS
An acrylic resin plate was luted to bovine dentin using one of three temporary cements; HY-Bond Temporary Cement Hard (HYB), Freegenol Temporary Pack (FTP), or Neodyne T (NDT). The control group (CON) was not treated with cement. Following the removal of the temporary cement, each dentin substrate was bonded to a silane-treated ceramic material (IPS Empress) with one of four luting agents; Super-Bond C&B (SCB), Panavia F (PAF), Nexus II (NEX), or Fuji Luting S (FLS). The specimens were immersed in water for 24 hours and the strength of the bond to shearing forces was determined.


RESULTS
The bond strengths (in MPa), with statistical categories shown in parentheses were: HYB (25.7, a), CON (23.5, a, b), FTP (19.8, b, c), and NDT (16.8, c, d) for the SCB system; FTP (13.8, d, e), CON (12.9, d, e), NDT (10.6, e, f), and HYB (7.8, f, g, h) for the PAF system; FTP (9.2, e, f, g), CON (7.9, f, g, h), HYB (7.7, f, g, h), NDT (7.1, f, g, h) for the NEX agent; and FTP (5.2, g, h, i), CON (3.7, h, i), NDT (3.0, h, i), HYB (1.6, i) for the FLS agent, (P< 0.05).
Kanakuri
Katsuhito
K
Department of Crown and Bridge Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan.
Kawamoto
Yoshikazu
Y
Kakehashi
Yoshiyuki
Y
Matsumura
Hideo
H
D000704:Analysis of Variance; D000818:Animals; D002417:Cattle; D001840:Dental Bonding; D003738:Dental Cements; D003794:Dental Restoration, Temporary / Q000379:methods*; D003799:Dental Stress Analysis; D003804:Dentin; D008422:Materials Testing; D019279:Resin Cements; D033081:Shear Strength
D003738:Dental Cements; D019279:Resin Cements