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2
nd
Edition of
Graphene & Semiconductors | Diamond Graphite & Carbon Materials Conference
6
th
Edition of
Smart Materials & Structures Conference
&
Journal of Material Sciences and Engineering| ISSN: 2169-0022 | GDCSM-2018 | Volume: 7
Synthesis and characterization of dental light-cured composites based on modified organic resins and
nanofillers
Zainab Riaz, Tehseen Riaz, Sobia Tabassum, Faiza Sharif, Fiasal Manzoor, Asif Ali, Aqif Anwar Chaudhary
and
Anila Asif
COMSATS Institute of Information Technology, Pakistan
R
estoring both anterior and posterior teeth with resin-composite materials is now an established clinical procedure. Dental
composites are popular in the field of dentistry due to superior aesthetics, mechanical and physical properties. The current
project has been divided in two parts firstly nanofiller (hydroxyapatite) was modified with gamma-(Methacryloyloxy)propyl]
trimethoxysilane (γMPS), by silanization process. The particle size, pore width and morphological status of nanofillers were found out
by XRD, BET and SEM studies respectively. In the second part hyperbranched aliphatic polyester were methacrylated and were used
to formulate dental composites by photopolymerization in presence of camphorquinone (CQ) as photoinitiator, dimethylaminoethyl
methacrylate (DMEM) as coinitiator along with bisphenol A glycidyl methacrylate (BisGMA) and triethyleneglycol-dimethacrylate
(TEGDMA) in 70:30 ratio. The concentration of methyl methacrylate varied in the resin mixture and its effect on different properties
like degree of conversion, polymerization shrinkage, mechanical (micro Vickers hardness, compressive and flexural strength) were
investigated. All these formulated resins, with partly methacrylated hyperbracnched polymer H20, have much higher double bond
conversion and less linear polymerization shrinkage. High molecular weight multi-methacrylates have been considered as one of the
most promising resin systems to reduce the shrinkage and improve the mechanical strengths of dental restorative composites. Thus,
it can be concluded that these composites can be used in dentistry to produce promising effects.
anilaasif@ciitlahore.edu.pkJ Material Sci Eng 2018, Volume: 7
DOI: 10.4172/2169-0022-C3-098