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Experimental study on reconstructing mandibular defects using porous titanium in goats.

Zhiping Jiang1, Zhuoyu Xia1, Xuanyi Dai1

  • 1Department of Stomatology, Shenzhen People's Hospital, the Second Affiliated Clinical Medical College of Jinan University, the First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, China.

Technology and Health Care : Official Journal of the European Society for Engineering and Medicine
|May 7, 2025
PubMed
Summary

Porous titanium with 70%-85% porosity and 300-500μm pore size significantly enhanced osteointegration in goat mandibular defects. This specific porous titanium structure is optimal for promoting bone regeneration and tissue growth.

Keywords:
biomaterialosteointegrationporosityporous titanium

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Area of Science:

  • Biomaterials Engineering
  • Orthopedic Research
  • Veterinary Medicine

Background:

  • Mandibular defects pose significant challenges in reconstruction.
  • Porous titanium offers potential for improved bone integration due to its structure.
  • Optimizing porosity and pore size is crucial for effective osteointegration.

Purpose of the Study:

  • To evaluate the impact of varying porosity and pore size in porous titanium on osteointegration.
  • To determine the optimal porous titanium characteristics for mandibular defect repair in goats.
  • To compare the osteointegrative potential of different porous titanium scaffolds.

Main Methods:

  • Fabrication of porous titanium using spark plasma sintering and powder metallurgy.
  • Categorization of samples into three groups based on porosity (50%-70%, 70%-85%) and pore size (100-300μm, 300-500μm), including a non-porous control group.
  • Implantation into goat mandibular defects, followed by analysis after three months using radiography, micro-CT, biomechanical testing, and histology.

Main Results:

  • Group B (70%-85% porosity, 300-500μm pore size) demonstrated superior osteointegration compared to other groups.
  • Histological and micro-CT analyses confirmed enhanced bone ingrowth and cellular infiltration in Group B.
  • Biomechanical testing indicated improved stability and integration for the optimized porous titanium scaffolds.

Conclusions:

  • Porous titanium with specific characteristics (70%-85% porosity, 300-500μm pore size) significantly enhances osteointegration in mandibular defects.
  • This optimized material shows promise for improving outcomes in reconstructive surgery.
  • The findings provide valuable insights into designing effective porous titanium implants for bone regeneration.