1. State Key Laboratory of Biobased Materials and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
2. Department of Periodontology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong Key Laboratory of Oral Tissue Regeneration, and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Shandong University, Jinan, Shandong 250012, China