Most people who grind their teeth at night have no idea they do it. The damage, though, shows up in the chair long before the patient notices anything more than a tired jaw.
Bruxism is the clinical term for clenching or grinding your teeth. It comes in two forms: awake bruxism, which is usually sustained clenching and is often tied to stress or concentration, and sleep bruxism, a rhythmic grinding that happens during sleep and is classified as a sleep-related movement disorder.
The sleep variety is the one we most often catch first. Because it happens while you are unconscious, you cannot feel the force you are generating. Many patients only learn about it when a partner mentions the sound — or when we point out wear patterns during an exam.
Grinding leaves a signature. When we examine your teeth, several findings together point strongly toward bruxism:
The forces generated during sleep grinding can substantially exceed those of normal chewing, and unlike chewing, they are sustained. Over years this produces cumulative, irreversible damage: worn-down teeth that shorten the whole smile, cracked cusps, fractured restorations, and strain on the temporomandibular joint.
The important point is that enamel does not regenerate. Once it is gone, the only way to restore lost tooth structure is with bonding, crowns, or veneers — all of which cost considerably more than protecting the teeth in the first place.
A night guard does not stop the grinding reflex. What it does is place a durable barrier between your upper and lower teeth, so the acrylic absorbs and redistributes the force instead of your enamel. The guard wears down over time — that wear is the point, and it is a useful record of how hard you are grinding.
We make yours from a digital scan or impression of your own teeth, so it seats precisely and your bite meets it evenly. An ill-fitting guard can do more harm than good, which is why fit and adjustment matter more than the material itself.
Over-the-counter boil-and-bite guards are inexpensive and easy to find, and for some people they are better than nothing. But they are bulky, they loosen as the material relaxes, they wear through quickly, and because they are not adjusted to your bite, they can leave you biting unevenly. Some patients also find that a soft, spongy guard invites more clenching rather than less.
A custom guard is fitted to your specific bite, made from material chosen for your grinding pattern, and adjusted in the chair so your teeth contact it evenly. It is more comfortable, which matters enormously — the best guard is the one you actually wear every night.
A guard protects your teeth, but it is worth asking why the grinding is happening. Stress and anxiety are common contributors. Caffeine and alcohol close to bedtime are associated with more sleep bruxism. Certain medications can play a role, which is a conversation to have with your physician rather than to act on alone.
Sleep-disordered breathing deserves particular attention: grinding is frequently seen alongside obstructive sleep apnea. If you also snore, wake unrefreshed, or feel sleepy during the day, we will talk about screening for that as well — because treating the underlying breathing problem sometimes reduces the grinding.
A night guard will not stop you from grinding — but it gives the force somewhere to go other than your enamel. Enamel does not grow back, so protecting it early is far cheaper than rebuilding it later.
It depends entirely on how hard you grind. Some patients get several years from one guard; heavy grinders may wear through one in a year or less. We check yours at every visit and let you know when it is time to replace it — a guard that has been ground through is no longer protecting anything.
Often it helps, because it reduces muscle strain and prevents the teeth from locking together. But jaw pain has several possible causes, so we evaluate the joint, the muscles, and your bite before assuming a guard is the whole answer.
There is an adjustment period of a few nights for most people. A well-fitted custom guard is thin and stays put, and the majority of patients stop noticing it within a week or two. If yours is not comfortable, tell us — it can usually be adjusted.
Many dental plans cover a portion of an occlusal guard, though coverage and frequency limits vary. We will verify your benefits before treatment and give you a clear estimate.
This article is for general education and is not a substitute for an in-person evaluation. Every mouth is different — schedule an exam with Dr. Constandelis to discuss what's right for you.
Written by Dr. Dena Constandelis, DMD
Dr. Constandelis received her DMD from the University of Medicine and Dentistry of New Jersey (now Rutgers School of Dental Medicine) and practices in her hometown of Clifton, NJ, where she took over her father's practice.
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