My orthodontist told me to wear my retainer every night but my friend has to wear hers 24/7 for the first 6 months. Why the difference? Is there any research to support one approach over the other?
There is no happier day for an orthodontic patient than the day your braces come off. It is the culmination of months of difficult brushing, flossing, watching what you eat, and wearing those pesky rubber bands. The last thing in the world we want is for the teeth to move. So how much retainer wear is really needed?
As I’ve discussed in previous posts, there is no perfect retainer for all patients and no retainer exists that will keep the teeth exactly like they were when the braces came off. In summary, genetics, wear, tongue position, and regular use cause changes that cannot be completely prevented. The purpose of retainers is to minimize these changes.
In the spirit of doing the best we can, what is the optimum number of hours of retainer wear for the least amount of movement? According to an article in the European Journal of Orthodontics by Drs. Thickett and Power, there was NO SIGNIFICANT DIFFERENCE between the amount of tooth movement when full-time and part-time (10 hours per day) retainer wear were compared. That was really good news to me since I have always prescribed that my patients wear their upper retainers nights only after an initial break-in period of 48 hours. It is good to have some research that confirms what I’ve seen clinically over the years.
Is it possible to wear your retainer too much? In some patients who use the vacuum-formed clear retainers over the front teeth, full-time wear can lead to an anterior openbite (a space between the upper and lower front teeth). The openbite that develops is the same size as the plastic covering the teeth. Typically the teeth will settle back together after you are given a wrap-around retainer that does not cover the biting edges while it is worn.
Remember that all patients are individuals and nothing works for everyone. Be sure and follow the specific instructions that your orthodontist gives YOU! He or she is the best one to evaluate your specific needs.
Dr. Greg Jorgensen is a board certified orthodontist providing braces and Invisalign to children, teenagers, and adults in Rio Rancho, New Mexico and the Albuquerque Westside.