Randomization
BLOOD CLOT
The patients participating in the clinical trial in the stomatology department of our hospital were randomly divided into three groups, and the surgery was performed by the same experienced clinician. Three envelopes, labeled “Group I”, “Group II” and “Group III”, were prepared before surgery. The surgeon opened it after the patient made a choice. A total of 75 patients were collected, of whom 9 dropped out of the trial and 66 were enrolled (Fig. Group I (control): in which only blood clot, including 22 patients;Group II (test A): in which autogenous bone, Bio-Oss and barrier membrane were applied in the extraction socket, including 23 patients;Group III(test B): in which autogenous bone, Bio-Oss, CGF gel and CGF membrane were applied in the extraction socket, including 21 patients.
Flowchart of patient participation