1. School of Stomatology, Jiamusi University, Jiamusi, Heilongjiang 154004, People’s Republic of China
2. Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang, Liaoning 110001, People’s Republic of China
3. Liaoning People’s Hospital, 33 Wenyi Road, Shenyang, Liaoning 110013, People’s Republic of China
4. Institute of Metal Research, Chinese Academy of Sciences, Shenyang, Liaoning 110016, People’s Republic of China