20 Years, 3000 patients, 10,000 Implants
There are many problems with studying the long-term success rates of dental implants. One of the biggest is simply designing studies that are long enough to get an accurate picture. That’s why studies that are 20 years or longer are so valuable to us.
But when studies get long, they sometimes fall prey to another difficulty: having enough patients. Many studies of dental implants rely on just a handful of patients. So when we have a study that utilizes all the patients in three private practices for this time period, it’s even more valuable.
The population for this study included 3095 patients (1693 of whom were women) who received a total of 10,158 dental implants. The average age of the patients was 52.4 at the time of implantation. Even though they were handled at three different practices, all patients received a standardized follow-up care, including a checkup three months after placement and yearly evaluations.
Although follow-up for this study was up to 20 years, most patients had much shorter follow-up periods. Ten-year follow-up was available for only 14.1% of patients, and 15 year follow-up was available for only 2.7% of patients.
Bone augmentation was used for 58.3% of procedures. Over the years, patients received many different types of bone graft materials, including their own bone, and a variety of 13 different commercial bone graft materials.