TY - JOUR
T1 - Phosphate group adsorption capacity of inorganic elements affects bond strength between cad/cam composite block and luting agent
AU - Tokunaga, Eri
AU - Nagaoka, Noriyuki
AU - Maruo, Yukinori
AU - Yoshihara, Kumiko
AU - Nishigawa, Goro
AU - Minagi, Shogo
N1 - Funding Information:
This work was partially supported by a Grant-in-aid for Scientific Research (KAKENHI), Grant Number 17K11749, from the Japan Society for the Promotion of Science (JSPS).
Publisher Copyright:
© 2021, Japanese Society for Dental Materials and Devices. All rights reserved.
PY - 2021
Y1 - 2021
N2 - This study aimed to investigate whether inorganic elements of polymer-infiltrated ceramic (PIC) and microfilled resin (MFR) for CAD/ CAM would affect initial bond strength to luting agent. Inorganic elements of PIC and MFR were different with shape and ingredient observed by SEM, STEM and EDS. Microtensile bond strengths (^TBS) value of PIC was increased by 10-methacryloyloxydecyl dihydrogen phosphate (MDP) and acetic acid (AA)- or MDP-activated silane treatment, and further increased by succeeding heat treatment (HT). The ^TBS of MFR was increased by MDP and MDP-activated silane, but decreased by AA-activated silane without HT. The HT improved the ^TBS of MFR with AA-activated silane, but conversely for MDP-activated silane. Only in MFR, phosphoric acid (PA) application before each surface treatment dramatically decreased the ^TBS of AA-activated silane. FTIR peaks in MFR shifted according to phosphate group’s peak. MFR would possess high phosphate group adsorption capacity, with MDP effectively improving its bonding capability.
AB - This study aimed to investigate whether inorganic elements of polymer-infiltrated ceramic (PIC) and microfilled resin (MFR) for CAD/ CAM would affect initial bond strength to luting agent. Inorganic elements of PIC and MFR were different with shape and ingredient observed by SEM, STEM and EDS. Microtensile bond strengths (^TBS) value of PIC was increased by 10-methacryloyloxydecyl dihydrogen phosphate (MDP) and acetic acid (AA)- or MDP-activated silane treatment, and further increased by succeeding heat treatment (HT). The ^TBS of MFR was increased by MDP and MDP-activated silane, but decreased by AA-activated silane without HT. The HT improved the ^TBS of MFR with AA-activated silane, but conversely for MDP-activated silane. Only in MFR, phosphoric acid (PA) application before each surface treatment dramatically decreased the ^TBS of AA-activated silane. FTIR peaks in MFR shifted according to phosphate group’s peak. MFR would possess high phosphate group adsorption capacity, with MDP effectively improving its bonding capability.
KW - Methacryloyloxydecyl dihydrogen phosphate (MDP)
KW - Microfilled resins
KW - Microtensile bond strength
KW - Polymer-infiltrated ceramic
KW - Silane
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U2 - 10.4012/dmj.2020-029
DO - 10.4012/dmj.2020-029
M3 - Article
C2 - 33028787
AN - SCOPUS:85103684074
VL - 40
SP - 288
EP - 296
JO - Dental Materials Journal
JF - Dental Materials Journal
SN - 0287-4547
IS - 2
ER -