TY - JOUR
AU1 - Yang, Lin
AU2 - Wu, Wei
AU3 - Xu, Bao-hua
AU4 - Jia, Pei-zeng
AU5 - Nie, Jun
AB - Abstract Objective the aim of this study was to investigate the properties of UV-curable composite resin of transfer tray for indirect bonding system of the lingual brackets. Methods the conversion of double-bond in the different concentration of UV-initiator was monitored by real time infrared (RTIR). The three-point flexure strength was measured by a universal testing machine. The storage modulus, loss modulus, and loss factor (tan delta) of the resin were measured by a Dynamic Mechanical Analyzer. The cytotoxicity of composite resin was evaluated by the agar covering test. Results the double bond conversion exceeded 70% at [benzophenone] = 0.7 wt.%, [Ethyl 4-dimethylaminobenzoate] = 0.7 wt.% and [2-Hydroxy-2-methyl-1-phenyl propanon] = 1 wt.%. The mean value of flexural strength came to 122 MPa. The value of storage modulus was 1.04 × 109 MPa at 23°C. The glass transition temperature was 142°C. The toxicity grade was zero at 2 h and one at 24 h. Conclusion in the preliminary evaluations, we indicated that the UV-curable composite resin of transfer tray could satisfy the clinical requirements.
TI - Study of UV-curable composite resin of transfer tray for orthodontics
JF - "Frontiers of Materials Science"
DO - 10.1007/s11706-008-0060-2
DA - 2008-12-01
UR - https://www.deepdyve.com/lp/springer-journals/study-of-uv-curable-composite-resin-of-transfer-tray-for-orthodontics-deS0cHDhcW
SP - 430
EP - 436
VL - 2
IS - 4
DP - DeepDyve
ER -