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TyroFill-Titanium Implant Constructs for the Coordinated Repair of Rabbit Mandible and Tooth Defects.
Weibo Zhang1, Joachim Kohn2, Pamela C Yelick1
1Department of Orthodontics, Division of Craniofacial and Molecular Genetics, Tufts University School of Dental Medicine, Boston, MA 02111, USA.
Bioengineering (Basel, Switzerland)
|November 25, 2023
Summary
This study introduces a novel scaffold for simultaneous craniomaxillofacial bone and dental implant repair. Human dental pulp stem cells and endothelial cells within scaffolds promote significant new bone growth around implants.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Craniomaxillofacial Surgery
Background:
- Current craniomaxillofacial (CMF) bone and tooth defect repair involves multiple surgeries.
- Previous work showed engineered bone formation using human dental pulp stem cell (hDPSC)-seeded scaffolds.
Purpose of the Study:
- To develop a single-stage approach for CMF bone and dental implant repair.
- To evaluate a modified TyroFill scaffold supporting a titanium implant for simultaneous bone regeneration and dental restoration.
Main Methods:
- TyroFill scaffolds with embedded titanium implants, seeded with hDPSCs and Human Umbilical Vein Endothelial Cells (HUVECs), were used.
- Constructs were implanted into rabbit mandibular defects and analyzed after 1 and 3 months via Micro-CT, histology, and IHC.
Main Results:
- Significant new bone formation was observed surrounding titanium implants in cell-seeded TyroFill constructs.
- Histological and IHC analyses confirmed bone integration and vascularization.
Conclusions:
- The hDPSC/HUVEC-seeded TyroFill scaffold system shows promise for simultaneous CMF bone and dental implant repair.
- This approach may reduce surgical stages and improve patient outcomes for CMF defects.
