1. Department of Oral Implant, Oral and Maxillofacial Center, Stomatologic Hospital & College, Anhui Medical University, Key Lab. of Oral Diseases Research of Anhui Province, Hefei, China.
2. Oral and Maxillofacial Surgery, Stomatologic Hospital & College, Anhui Medical University, Key Lab. of Oral Diseases Research of Anhui Province, Hefei, China.