About the Authors

Haochen Liu

Contributed equally to this work with: Haochen Liu, Tingting Ding

Affiliation Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, China

Tingting Ding

Contributed equally to this work with: Haochen Liu, Tingting Ding

Affiliation Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, China

Yuan Zhan

Affiliation The Third Dental Center, Peking University School and Hospital of Stomatology, Beijing, China

Hailan Feng

kqfenghl@bjmu.edu.cn

Affiliation Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HF. Performed the experiments: TD HL YZ. Analyzed the data: TD HL. Contributed reagents/materials/analysis tools: YZ TD HL. Wrote the paper: TD HL HF.