Article 1 Composite Material 1 Cytotoxicity 1 Pre-heating of Composites Temperature 1 adult 1 apoptosis 1 biocompatibility 1 cytotoxicity 1 heating 1 human 1 human cell 1 in vitro study 1 lymphocyte 1 male 1 necrosis 1 normal human 1 polymer 1 polymerization 1