Magnesium-based bone cement and bone void filler: preliminary experimental studies.

Area of Science:

• Biomaterials Science
• Craniofacial Surgery
• Orthopedic Research

Background:

• Bone cement is crucial for craniofacial surgery, addressing osseous defects from trauma or surgery.
• Ideal bone cements should be biocompatible, resorbable, bone-inductive, and adhesive.
• Current calcium-based cements have limitations, including a high failure rate.

Purpose of the Study:

• To compare the efficacy of OsteoCrete, a magnesium-based bone cement, against Norian, a calcium-based cement.
• To evaluate their performance in critical-sized rabbit skull defects and bone flap fixation.

Main Methods:

• Critical-sized skull defects and bone flap fixation were created in rabbits.
• OsteoCrete and Norian bone cements were implanted and assessed.
• Resorption rates, bone replacement, and bone flap stability were evaluated.

Main Results:

• Both OsteoCrete and Norian demonstrated success in the rabbit models.
• OsteoCrete exhibited a significantly faster rate of resorption and replacement by new bone compared to Norian.
• OsteoCrete also showed superior bone flap positioning and stability, with no adverse reactions observed for either cement.

Conclusions:

• Magnesium-based bone cement (OsteoCrete) offers advantages over calcium-based bone cement (Norian) in craniofacial applications.
• OsteoCrete demonstrates improved resorption and integration, suggesting enhanced clinical potential for bone void filling and augmentation.