If your dentist in Selkirk has recommended a night guard, you already know how much it can help. Whether you grind your teeth in your sleep or clench your jaw without realizing it, a night guard sits between your upper and lower teeth and absorbs the pressure so your natural teeth do not have to. It is a simple device, but it does a genuinely important job.
What a lot of patients do not think about is that night guards wear out. They do not last forever, and using one that is past its prime can mean you are getting far less protection than you think. So, how often should you actually replace yours?
The honest answer is that it depends on a few things, but there are clear signs to watch for and general timelines worth knowing.
How Long Do Night Guards Typically Last?
There is no single answer that applies to everyone. Replacement timelines vary depending on how hard you grind, what material your night guard is made from, and how well you care for it.
As a general guide:
Soft Night Guards
Soft guards are usually the most comfortable option, especially for mild grinders. They tend to wear down faster than harder materials. Most soft night guards last anywhere from six months to two years with regular use.
Hard Night Guards
Hard acrylic night guards are more durable and are often recommended for moderate to heavy grinders. With proper care, they can last anywhere from three to five years. Some last longer, but that does not always mean they should be kept that long.
Dual Laminate Night Guards
These combine a soft inner layer with a hard outer shell. They fall somewhere in between, typically lasting two to four years, depending on the level of grinding and care routine.
Your Selkirk dentist can help you determine which type is most appropriate for your situation and give you a more personalized estimate based on how your current guard is holding up.
Signs It Is Time to Replace Your Night Guard
Rather than waiting for a set number of years, it is smarter to check your night guard regularly for these specific signs.
Visible Wear and Thinning
Hold your night guard up to the light and look for areas where the material has thinned significantly. Heavy grinders often wear through one or two spots before the rest of the guard shows much wear at all. A thinned-out area means that part of your teeth is no longer protected.
Cracks or Splits
Any crack in a night guard is a reason to replace it. A cracked guard can break during use, which creates a choking hazard. It also means the structural integrity of the guard has been compromised and it is no longer doing its job properly.
A Poor Fit
Night guards are custom made to fit your mouth at the time they are fabricated. Over time, slight changes in your bite, jaw position, or even natural tooth wear can mean the guard no longer fits the way it should. If it feels loose, shifts around during the night, or requires significant effort to seat properly, it is time for a new one.
Persistent Odour or Discolouration
Proper cleaning keeps a night guard fresh for a long time. But if yours has a persistent smell despite regular cleaning, or if it has developed deep discolouration that will not shift, bacteria may have worked their way into the material. That is not something you want to be putting in your mouth every night.
Jaw or Tooth Pain That Has Returned
If you notice that your jaw is sore again in the mornings, or that you are waking up with headaches or tooth sensitivity after a period of feeling fine, your night guard may no longer be providing adequate protection. This can happen gradually as the material wears down.
What Happens If You Use a Worn-Out Night Guard?
It is tempting to keep using a night guard that seems mostly fine because replacing it feels like an unnecessary expense. But a worn guard is less effective than no guard at all in some cases, because it may create uneven pressure across your teeth or shift your jaw into an uncomfortable position.
Continuing to use a deteriorating guard can contribute to increased tooth wear, jaw discomfort, and in some cases, changes to your bite alignment. Replacing it on time is genuinely the more cost-effective choice in the long run.
How to Make Your Night Guard Last Longer
Good habits can extend the life of your night guard and keep it hygienic between replacements.
Rinse it with cool water immediately after removing it each morning. Brush it gently with a soft toothbrush and mild soap, avoiding toothpaste as it can be too abrasive. Let it dry completely before storing it in its case, since a moist environment encourages bacterial growth. Keep it away from heat, including hot water and direct sunlight, as heat can warp the material and change the fit.
Bringing your night guard to your regular dental checkups is also a good idea. Your dentist can assess the wear and let you know how much life it has left before the next replacement is needed.
How Your Dentist Can Help
Night guards purchased over the counter at a pharmacy are not the same as custom-fitted ones made by a dental professional. Custom night guards are designed specifically for your bite, which means better protection, a more comfortable fit, and a longer lifespan. If you have been relying on a store-bought guard, or if you have never been assessed for one and suspect you may be grinding, it is worth having a conversation with your dental team.
Regular checkups allow your dentist to monitor any wear on your teeth, check the condition of your existing night guard, and make sure your jaw and bite are staying healthy over time.
Book Your Next Appointment at Selkirk Crossing Dental
At Selkirk Crossing Dental, we are here to help you stay on top of the little things that protect your smile while you sleep and keep it healthy in the long run.
If your night guard is overdue for a replacement, or if you are not sure whether yours is still doing its job, give us a call at 204-481-4484 or visit us at selkirkdentist.com to book an appointment. Our team in Selkirk is always happy to help you find the right solution for your needs.