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Updated: Jul 30, 2026

Use of Human Perivascular Stem Cells for Bone Regeneration
Published on: May 25, 2012
Autologous concentrated growth factor mediated accelerated bone healing in root-end microsurgery: A multicenter
Yoshio Yahata1, Keisuke Handa1,2, Naoto Ohkura3
1Division of Operative Dentistry, Department of Ecological Dentistry, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan.
Concentrated growth factor (CGF) significantly accelerated bone lesion reduction after root-end microsurgery. This autologous blood product shows promise for enhancing healing in dental procedures.
Area of Science:
- Dentistry
- Regenerative Medicine
- Oral Surgery
Background:
- Concentrated growth factor (CGF) is an autologous platelet concentrate known for promoting tissue regeneration and possessing anti-inflammatory effects.
- Root-end microsurgery is a procedure to treat persistent periapical lesions.
Purpose of the Study:
- To evaluate the efficacy of CGF in enhancing bone healing when used with root-end microsurgery.
- To compare bone regeneration outcomes between patients receiving CGF and a control group.
Main Methods:
- A randomized multicenter trial involving 24 adult patients undergoing root-end microsurgery.
- CGF was implanted into the bone cavity post-root-end filling; control group received no CGF.
- Clinical, periapical radiographic, and cone-beam computed tomography (CBCT) evaluations were performed at various postoperative intervals.
Main Results:
- No significant difference in overall treatment success rates between CGF and control groups at 12 months (91.7% vs. 83.3%).
- The CGF group demonstrated a significantly higher lesion volume reduction rate (75.6%) compared to the control group (61.0%) at 6 months via CBCT.
Conclusions:
- Autologous CGF, when combined with root-end microsurgery, accelerates bone lesion reduction.
- Using autologous blood products like CGF to stimulate healing is a promising adjunct to infection source removal in root-end microsurgery.
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