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Related Experiment Video

Updated: Mar 17, 2026

Half-segmental Diaphyseal Bone Defect Model in Rats for Evaluating Bone Substitute Performance in Load-bearing Regions
04:32

Half-segmental Diaphyseal Bone Defect Model in Rats for Evaluating Bone Substitute Performance in Load-bearing Regions

Published on: December 30, 2025

157

Effect of hydroxyapatite on critical-sized defect.

Ryoe-Woon Kim1, Ji-Hyoung Kim1, Seong-Yong Moon2

  • 1Graduate School of Dentistry, Chosun University, Gwangju, South Korea.

Maxillofacial Plastic and Reconstructive Surgery
|July 22, 2016
PubMed
Summary

Hydroxyapatite (Bongros®-HA) effectively promotes new bone formation in rat calvarial defects, showing significant results at 4 weeks. This synthetic graft material shows promise for guided bone regeneration applications.

Keywords:
Artificial BoneBone graftBovine boneHydroxyapatiteXenograft

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Surgical Innovation

Background:

  • Graft materials like xenografts and synthetic options are alternatives to autografts for guided bone regeneration.
  • Evaluating new materials is crucial for improving bone defect repair outcomes.

Purpose of the Study:

  • To assess the effectiveness of carbonate apatite, specifically Bongros®-HA, in healing critical-size bone defects in rat calvaria.
  • To compare Bongros®-HA with bovine bone mineral (Bio-Oss®) and a control group.

Main Methods:

  • Critical-size defects (8 mm diameter) were created in 36 rat calvaria.
  • Defects were filled with no graft (control, n=10), Bio-Oss® (n=11), or Bongros®-HA (n=15).
  • Histological and histomorphometric analyses were performed at 4 and 8 weeks post-surgery.

Main Results:

  • At 4 weeks, Bongros®-HA (42.90%) showed significantly higher new bone formation (p<0.05) than control (30.50%) and Bio-Oss® (28.53%).
  • At 8 weeks, all groups exhibited similar new bone formation percentages: control (50.21%), Bio-Oss® (54.12%), and Bongros®-HA (50.92%).

Conclusions:

  • Bongros®-HA demonstrates potential as an effective material for new bone regeneration.
  • The study highlights the early efficacy of hydroxyapatite in critical-size bone defects.