1. College of Stomatology, Anhui Medical College, Hefei, Anhui 230601, P.R. China
2. Shanghai Smartee Denti‑Technology Co., Ltd., Shanghai 200120, P.R. China
3. Key Laboratory of Oral Disease Research of Anhui Province, Department of Orthodontics, Stomatologic Hospital and College, Anhui Medical University, Hefei, Anhui 230032, P.R. China