1. Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan333, Taiwan, Republic of China
2. Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei106, Taiwan, Republic of China
3. Department of General Dentistry, Chang Gung Memorial Hospital, Taoyuan333, Taiwan, Republic of China
4. Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei106, Taiwan, Republic of China