Study Status: Recruiting
Recruit Status: Recruiting
Study Type: Interventional
Official Title: Study of Local Periodontal Regeneration of Chronic Periodontal Disease Patients Receiving Allogeneic Human Dental Pulp Stem Cells Injection Therapy
Brief Summary: The purpose of this study is to evaluate the safety of clinical injection of allogeneic human dental pulp stem cell(DPSC) in local infected periodontal tissue and determine whether injection of allogeneic DPSC is a effective way in the treatment of chronic periodontal disease.