Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Synthesis and characterizations of a fluoride-releasing dental restorative material
AU - Khan, A.S.
AU - Aamer, S.
AU - Chaudhry, A.A.
AU - Wong, F.S.L.
AU - Rehman, I.U.
PY - 2013
Y1 - 2013
N2 - The aim was to develop an obturating material which has the tendency to release fluoride and minimize interfaces with tooth. Nano-fluorapatite (nFA) powder was synthesized by sol-gel. The composite based on polyurethane (PU) was obtained by chemically binding the nFA (10, 15, 20% wt/wt) to the diisocyanate component by utilizing in-situ polymerization. The procedure involved stepwise addition of monomeric units of PU, and optimizing the reagent concentrations to synthesize composite. The structural, phase and morphological analysis of nFA was evaluated. The structural, fluoride release and in-vitro adhesion analysis with tooth structure of PU/nFA was conducted. For fluoride release analysis the samples were stored in artificial saliva and deionized water for periodical time intervals. Bond strength of composites was analyzed by push-out test. Chemical linkage was achieved between PU and nFA without intermediate coupling agent. The insignificant difference of fluoride release pattern was observed in artificial saliva and (p ≥ 0.05) deionized water. The PU/nFA composite provided sustained release of fluoride over a long period of time. The composite showed more adhesion toward tooth structure with the increase in concentration of nFA. Bond strength of composite was in accordance with root canal filling material, hence, the material with anti-cariogenic properties can be used as an obturating material. © 2013 Elsevier B.V.
AB - The aim was to develop an obturating material which has the tendency to release fluoride and minimize interfaces with tooth. Nano-fluorapatite (nFA) powder was synthesized by sol-gel. The composite based on polyurethane (PU) was obtained by chemically binding the nFA (10, 15, 20% wt/wt) to the diisocyanate component by utilizing in-situ polymerization. The procedure involved stepwise addition of monomeric units of PU, and optimizing the reagent concentrations to synthesize composite. The structural, phase and morphological analysis of nFA was evaluated. The structural, fluoride release and in-vitro adhesion analysis with tooth structure of PU/nFA was conducted. For fluoride release analysis the samples were stored in artificial saliva and deionized water for periodical time intervals. Bond strength of composites was analyzed by push-out test. Chemical linkage was achieved between PU and nFA without intermediate coupling agent. The insignificant difference of fluoride release pattern was observed in artificial saliva and (p ≥ 0.05) deionized water. The PU/nFA composite provided sustained release of fluoride over a long period of time. The composite showed more adhesion toward tooth structure with the increase in concentration of nFA. Bond strength of composite was in accordance with root canal filling material, hence, the material with anti-cariogenic properties can be used as an obturating material. © 2013 Elsevier B.V.
KW - Bond strength
KW - Dental composite
KW - Fluorapatite
KW - Fluoride release
KW - Obturating material
KW - Spectroscopy
KW - Dental restorative materials
KW - Fluorapatites
KW - In-situ polymerization
KW - Intermediate coupling
KW - Morphological analysis
KW - Reagent concentration
KW - Synthesis and characterizations
KW - Adhesion
KW - Body fluids
KW - Bond strength (materials)
KW - Coupling agents
KW - Deionized water
KW - Dental composites
KW - Dental materials
KW - Fluorine compounds
KW - Materials
KW - Sol-gels
KW - Interfaces (materials)
KW - apatite
KW - fluorapatite
KW - fluoride
KW - nanomaterial
KW - polyurethan
KW - root canal filling material
KW - article
KW - chemistry
KW - human
KW - synthesis
KW - Apatites
KW - Fluorides
KW - Humans
KW - Nanostructures
KW - Polyurethanes
KW - Root Canal Filling Materials
U2 - 10.1016/j.msec.2013.04.029
DO - 10.1016/j.msec.2013.04.029
M3 - Journal article
VL - 33
SP - 3458
EP - 3464
JO - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
SN - 0921-5093
IS - 6
ER -