Researchers conducted a small study to compare two surgical techniques for rebuilding severely shrunken jawbone in the front lower jaw. The study involved 22 patients who needed bone grafts before getting dental implants. One technique used the patient's own bone chips with a non-resorbable titanium-reinforced membrane. The other used a mix of the patient's bone and cow bone with a resorbable collagen membrane.
After following patients for five years, the researchers found both techniques produced similar amounts of new vertical bone height. The technique with the non-resorbable membrane appeared to better maintain the gum tissue around the future implant site and showed less bone loss at the crest over time. However, the study did not report specific measurements or statistical analysis for these observations.
This was a very small study with only 11 patients in each group. The abstract does not provide specific numbers for how much bone was gained or lost, nor does it report any safety data or complications. While the findings suggest both techniques might be useful for complex bone grafting cases, much larger studies with detailed measurements are needed to confirm these early observations.