One of the great things about dental implants is that most people are candidates for the procedure. However, one of the factors that had given us pause in the past is whether you had previously received radiation therapy for head and neck cancer. This had been linked with many potential risks for the procedure.
But now a new study shows that the success rates for dental implants are also high in people who have had radiation therapy, nearly 93% after five years. Although that’s a little lower than for people who did not get radiation therapy, it’s still a very high success rate, and certainly makes the procedure worth considering.
Risks of Dental Implants after Radiation Therapy
If you’ve had radiation therapy for cancer, it’s important to understand the potential risks. The most common risk is that your dental implants will fail. That’s because radiation can damage your bones’ ability to heal around the dental implant, so it won’t properly integrate. Some studies show survival rates as low as 74% for implants after radiation therapy.
Another potential risk is osteonecrosis of the jaw (ONJ), which is normally a very rare complication of dental implants. In this complication, the jawbone begins dying, and a significant portion of the jaw might be damaged. This risk increases because radiation therapy can alter the blood supply in the bone as well as other attributes that promote bone healing.
The level of these risks is related to the amount of radiation you received, and when you received the radiation in relation to your implants.
Both of these risks are related to the amount of radiation received and the distribution of the radiation.
High Survival Rates in Study
However, this new study showed that patients who received radiation therapy had very high success rates for their dental implants. This study looked at 35 patients who had received 169 dental implants and who received a minimum radiation dose of 50 Grays (Gy). They were followed for an average of 7.4 years (minimum 0.3 years, maximum 14.7 years).
The overall 5-year survival rate for dental implants was 92.9%. The only factors found to have a statistically significant impact on survival were sex and mode of radiation delivery.
Are You a Candidate?
This study makes us seriously reconsider whether you are a candidate for dental implants after radiation therapy. If you’ve previously been told you weren’t a candidate, it may be time to schedule another consultation to find out what’s changed.
But we still have to consult with your oncologist to understand the exact amounts of radiation, how it was delivered, and where it was delivered so we can plan an implant procedure with the best chances of success. We also have to consider how treatments like bone graft may impact your success rate.
To start planning your dental implant procedure in River Edge, NJ, please call 201-343-4044 today for an appointment with an implant dentist at the River Edge Dental Center for TMJ, Sleep Apnea, & Reconstructive Dentistry.