FDA finalizes guidance on dental bone grafting devices to reduce animal use
MARYLAND: The U.S. Food and Drug Administration (FDA) has finalized new guidance for manufacturers of dental bone grafting material devices, marking a significant step toward reducing reliance on animal testing in dentistry.
The finalized document outlines recommendations to help manufacturers comply with existing regulatory controls while increasing transparency around animal use in product development. Importantly, the FDA highlighted that the guidance “provides recommendations that may aid in the reduction of the total number of animals used to support a submission, supports the 3Rs of replace, reduce and/or refine animal use.”
Manufacturers are also encouraged to consult with the FDA if they wish to employ validated non-animal testing methods that could substitute animal studies.
Bone grafting on the rise
Bone grafting procedures have become increasingly common worldwide, driven by advances in regenerative medicine, innovative biomaterials, and rising patient demand for bone restoration.
A 2021 study estimated that up to 50 percent of all dental implant procedures involve bone grafting. Globally, around 2.2 million bone graft procedures are performed every year, representing an industry worth approximately US$664 million in 2021. The number of procedures to repair bone defects is projected to grow at an annual rate of about 13 percent.
The current gold standard for bone repair remains autografting, in which surgeons use a patient’s own bone for dental implantation, reconstruction, and craniofacial repairs. However, limited supply and patient morbidity often necessitate the use of alternative grafting materials.
Animal-derived bone grafts still widely used
Animal-derived grafting materials, known as xenografts, are among the most commonly used substitutes. Bovine and porcine bone — from cows and pigs — are the primary sources, according to research published in PeerJ and ScienceDirect.
Other less common sources have included horses, camels, and even ostriches, though their use is more specialized and limited. These xenografts provide structural and biological support, but their reliance on animal material has raised ethical concerns and prompted regulatory bodies like the FDA to encourage alternative approaches.
A long history of bone grafting
Bone grafting has a history spanning centuries. The first documented successful bone transplant occurred in 1668, when Dutch surgeon Job van Meekeren transplanted a piece of canine skull into the head of a Russian soldier. Remarkably, the graft fully integrated, marking the earliest milestone in modern reconstructive surgery.
The FDA’s new guidance represents a move toward balancing patient safety, innovation in biomaterials, and the global push to reduce animal testing in healthcare research.
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