Chinese Journal of Stomatological Continuing Education ›› 2025, Vol. 28 ›› Issue (3): 158-165.DOI: 10.12337/zgkqjxjyzz.2025.03.007

Previous Articles     Next Articles

A Randomized Controlled Clinical Study of Concentrated Growth Factor for Extraction of Mandibular Lower Impacted Third Molars

Jun Ma1,2,3, Le Bai1,2, Xin Yang1,2, Hao Cui1,2, Sijia Na1,2, Junbo Tu1,2, Xiang Liang1,2,*   

  1. 1Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Xi’an, Shaanxi Province, P.R. China;
    2Department of Oral and Maxillofacial Surgery, College of Stomatology, Xi'an Jiaotong University, Xi’an, Shaanxi Province, P.R. China;
    3Oral and Maxillofacial Surgery Outpatient Department, Xining Stomatological Hospital, Xining, Qinghai Province, P.R. China
  • Online:2025-05-31 Published:2025-05-31
  • Contact: Xiang Liang. Tel: 029-87215336. Email: 1529643062@qq.com. Address: No. 98, West 5th Road, Xincheng District, Xi’an 710004, Shaanxi Province, P.R. China.
  • Supported by:
    Open Research Project of Shaanxi Provincial Clinical Research Center for Dento-Maxillofacial Diseases (No.2021YHJB08); The Research and Innovation Team for Oral and Maxillofacial Surgery at the Shaanxi Provincial Health and Wellness Commission (No.2024TD-19)

Abstract: Objective: To investigate the effect of concentrated growth factor (CGF) on the relief of complications and the healing and repair of soft and hard tissue after extraction of lower mandibular impacted third molar. Methods: Fifty patients with lower impacted third molars were randomly divided into experimental group and control group. Postoperative complications pain, swelling and soft tissue healing were compared at 1, 3 and 7 days after surgery, and the second molar pocket and alveolar bone tissue healing were compared 3 months later. Results: The wound healing index of experimental group was better than that of control group 7 days after operation (P<0.01). CGF alleviated local swelling 1 and 3 days after operation (P<0.001), and there was no significant difference between CGF and CGF on day 7. There was no statistical significance in visual simulation scores on the first day after surgery (P=0.250), and experimental group were lower than those on the control group on the 3rd and 7th day after surgery (P=0.001). There were significant differences in alveolar ridge width and buccal-lingual wall height between experimental group and control group (P<0.001). Bone density in experimental group was significantly higher than that in control group. The improvement of periodontal pocket in experimental group was significantly different (P<0.001). Conclusions: Local application of CGF can effectively promote wound healing, relieve local swelling and pain, and promote tissue regeneration after the extraction of lower mandibular third molar.

Key words: impacted third molar in lower jaw, CGF, complications, tissue healing, tooth extraction