Multi-purpose bonding performance of newly synthesized phosphonic acid monomers.
Multi-purpose bonding performance of three kinds of newly synthesized phosphonic acid monomers was investigated. Methacryloxyalkyl or acryloxyalkyl phosphonoacetates of 6-MHPA, 6-AHPA, 10-MDPA were synthesized in 42.8-51.9% yields with a light yellow viscous liquid, and identified as new compounds by 1H NMR, IR, and elemental analysis. Conventional adhesive monomers, namely VBPA, 4-META, and 4-AETA, and CEBA-p-TSMo-t-BPMA initiator were also used. Seven experimental composite-type adhesive resins comprising these six kinds of adhesive monomers and None (control) with the initiator were prepared. Tensile bond strengths of adhesive resins to unetched ground enamel and dentin, ground porcelain, and sandblasted Ni-Cr alloy were measured at a crosshead speed of 1.0 mm/min. Results showed that except with VBPA, there were no significant differences among 6-MHPA, 6-AHPA, 10-MDPA, 4-AETA, and 4-META in bonding performance to the adherends (p<0.01). It was found that the new phosphonic acid monomers provided good multipurpose adhesion to all adherends tested.
Ikemura
Kunio
K
Department of Research and Development, Shofu Inc., 11 kamitakamatsu-cho, Fukuine, Higashiyama-ku, Kyoto 605-0983, Japan. k-ikemura@shofu.co.jp
Tay
Franklin R
FR
Nishiyama
Norihiro
N
Pashley
David H
DH
Endo
Takeshi
T
D000704:Analysis of Variance; D000818:Animals; D002417:Cattle; D001840:Dental Bonding; D003799:Dental Stress Analysis; D008422:Materials Testing; D015394:Molecular Structure; D063065:Organophosphonates / Q000737:chemistry*; D044367:Phase Transition; D019279:Resin Cements / Q000737:chemistry*; D018709:Statistics, Nonparametric; D013718:Tensile Strength
D063065:Organophosphonates; D019279:Resin Cements