Radiographic and Clinical Assessment of Socket Preservation Using Autogenous Demineralized Dentin Matrix versus Xenograft: A Randomized Controlled Trial
This randomized controlled trial demonstrates that autogenous demineralized dentin matrix (ADDM) is non-inferior to deproteinized bovine bone mineral (DBBM) for preserving hard and soft tissue dimensions in a membrane-free socket preservation approach following maxillary premolar extractions.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer
When a tooth is pulled, the jawbone that once held it does not simply sit still. Like a shoreline eroding after a storm, the bone begins to shrink and reshape itself. This natural process, known as resorption, causes the ridge of bone to lose both height and width over time. For anyone hoping to replace the missing tooth with an implant later, this shrinking is a significant problem, as there may not be enough solid bone left to support the new fixture. To stop this collapse, dentists often perform a procedure called socket preservation. Immediately after removing a tooth, they pack the empty hole with a material designed to act as a scaffold, holding the space open while the body heals. The most common material used for this is a processed bone mineral derived from cows, which provides a sturdy, slow-dissolving framework. However, this material is foreign to the human body and does not actively encourage new bone growth on its own.
A different approach has emerged that turns medical waste into a healing resource. Instead of using animal products, this method uses the patient's own extracted teeth. Because tooth dentin and jawbone share a very similar chemical structure and origin, the body recognizes them as kindred. By taking a tooth that is being removed anyway, cleaning it, and treating it with a mild acid to reveal hidden growth factors, dentists can create a graft material that is biologically active. This material, called autogenous demineralized dentin matrix, is entirely from the patient, meaning there is no risk of the body rejecting it. The question researchers wanted to answer was simple: does this home-grown material work as well as the traditional cow-derived bone mineral to keep the jawbone from shrinking?
To find the answer, a team of researchers in Egypt and Jordan conducted a carefully controlled experiment involving forty patients who needed upper premolar teeth removed. The patients were randomly divided into two groups. One group received the traditional cow-derived bone mineral in their extraction sockets, while the other group received the processed dentin from their own extracted teeth. Crucially, neither group received a protective membrane over the graft, a decision made to simplify the surgery and reduce costs. The researchers then waited six months to see how the bone had healed. They used advanced three-dimensional imaging to measure the width of the bone at the top, middle, and bottom of the socket, as well as the total volume of bone remaining. They also tracked the width of the gum tissue and asked patients to report their pain levels during the first week of recovery.
The results showed that both groups healed remarkably well, and the two materials performed almost identically. In both groups, the bone did shrink slightly over the six months, which is a normal part of the healing process, but the amount of shrinkage was statistically the same regardless of which material was used. At the top of the socket, where bone loss is usually most severe, the group using their own dentin lost an average of 0.53 millimeters of width, while the group using the cow bone lost 0.44 millimeters. This tiny difference was not significant enough to favor one material over the other. The same pattern held true for the total volume of bone and the health of the surrounding gum tissue. Patients in both groups reported similar levels of pain, which dropped quickly to near zero within a week, and neither group experienced any unusual complications.
The study concludes that the processed dentin from a patient's own tooth is a viable, effective alternative to the traditional cow-derived bone mineral. It preserves the shape and size of the jawbone just as well as the established standard, without the need for a protective membrane or the risk of immune rejection. While the researchers noted that their study focused on a six-month period and a specific type of tooth, the findings offer a compelling option for dentists and patients. It suggests that a material once considered waste can be repurposed into a high-quality graft, providing a safe, cost-effective, and biologically friendly way to maintain the jawbone after a tooth extraction.
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