Effect of implant restoration following two procedures of alveolar ridge preservation of upper and lower molars with advanced periodontitis (with a 6-year follow-up case analysis)
Zhang Haoyun, Wei Yiping, Hu Wenjie, XuTao, Liu Yunsong
Chinese Journal of Oral Implantology . 2021, (1): 47 -53 .  DOI: 10.12337/zgkqzzxzz.2021.02.011