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Related Experiment Videos

Interface between titanium miniplate/screw and human calvaria.

K Hwang1, J M Schmitt, J O Hollinger

  • 1Department of Plastic Surgery, Inha University Hospital, 7-206 Shinheung-dong, Choong-gu, Inchon, 400-103, Korea. jokerhg@inha.ac.kr

The Journal of Craniofacial Surgery
|April 21, 2001
PubMed
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Titanium miniplates show significant bone integration after cranial surgery. Bone-contacting surface ratios and mineral content indicate successful osseointegration in both normal and grafted bone tissues.

Area of Science:

  • Biomaterials Science
  • Orthopedic Surgery
  • Craniofacial Reconstruction

Background:

  • Craniectomy defects often require reconstruction using bone grafts and fixation devices.
  • Titanium miniplates and screws are commonly used for stabilizing cranial bone segments.
  • Understanding the long-term interfacial response of titanium implants is crucial for successful osseointegration.

Observation:

  • A 53-year-old female patient's cranial bone with a titanium miniplate and screws was analyzed 18 months post-craniectomy.
  • Histological analysis examined the interface between titanium implants and both normal calvarial bone and nonvascularized bone graft.
  • Microscopic evaluation focused on bone-contacting surface ratio (BCSR), trabecular bone area, and Ca/P ratios.

Findings:

  • The mean BCSR was 64.1% for screwed bone, 69.3% for normal bone, and 60.4% for grafted bone.

Related Experiment Videos

  • Trabecular bone areas surrounding screws were comparable in normal (45.25 mm2) and grafted (41.82 mm2) calvaria.
  • The mean Ca/P peak-height ratio indicated mineral content around implants, with values of 1.47 (implant), 1.37 (normal), and 1.51 (grafted).

    • Implications:

    • Direct contact between titanium implants and bone promotes osseointegration.
    • Titanium miniplates demonstrate effective bone integration in cranial reconstruction, supporting both native and grafted bone.
    • These findings support the use of titanium implants in complex craniofacial surgeries, highlighting their biocompatibility and osteoconductive potential.