Otago University Researchers Develop Cow Bone Graft Technique for Jaw Repairs

Leftover cow bones could soon provide a cheap way to rebuild human jaws, following successful overseas trials by Otago University scientists.

The Extraction Process

Researchers developed a method to extract a mineral called hydroxyapatite from cow bone to use as a scaffolding for new bone growth. Researcher Jithendra Ratnayake explained that the process removes all fats, proteins, and collagens, leaving a pure white block with many pores. This extraction method uses hardly any chemicals and safely kills the prions that cause mad cow disease, making the final material completely safe for human use.

Medical Applications

Traditional bone grafts often require taking bone from another part of a patient's body, which means multiple surgeries and higher costs. The new cow bone material can instead fill gaps left by tumor removals or wisdom tooth extractions. Once placed in the body, bone cells attach to the porous material, grow, and help blood vessels form in the area. Synthetic alternatives already exist on the market, but they cost much more and lack the same porous architecture.

Clinical Trials

The team tested the method on 300 patients in India through a partner company that owns the patent, reporting no adverse reactions so far. The company plans to market the product in South Asia and the Middle East, while its arrival in New Zealand remains up to the company.

Context

Bone grafting is a common dental and surgical procedure used to restore bone density and structure after teeth extractions, trauma, or disease. Sourcing biocompatible materials from animals reduces the need for secondary surgeries on patients, lowering both medical costs and recovery times.