What Actually Happens to Your Teeth While You Sleep?

You brush your teeth, head to bed and probably don’t give your mouth another thought until morning.

But while you’re sleeping, things don’t simply switch off.

Your saliva flow changes, bacteria continue to live in your mouth, and some people clench or grind their teeth without even knowing they’re doing it. Your sleeping habits can also influence how your mouth feels when you wake up.

So, what exactly is going on in there for those seven or eight hours?

Your Mouth Produces Less Saliva

Saliva is one of your mouth’s natural defence systems. Throughout the day, it helps wash away food particles, neutralise acids and keep your mouth comfortable.

While you sleep, your body naturally produces less saliva.

That’s one of the reasons your mouth can feel a little dry or stale when you first wake up. With less saliva moving around your mouth overnight, there’s also less natural washing taking place.

It makes your nighttime brushing routine particularly important. Going to sleep with clean teeth means there is less food debris and plaque sitting around while saliva production is reduced.

The Bacteria in Your Mouth Don’t Go to Bed

Your mouth is home to many different types of bacteria, and they’re still there while you’re asleep.

If you’ve eaten or had something sugary before bed and haven’t brushed properly afterwards, bacteria can use those sugars and produce acids that can contribute to tooth decay.

This is why brushing before bed is one of those habits worth keeping, even on the nights when you’re exhausted and would rather go straight to sleep.

Two minutes suddenly doesn’t seem like much when you consider how long you’re about to spend asleep.

Your Morning Breath Has an Explanation

Morning breath isn’t exactly anyone’s favourite topic, but there’s a reason it’s so common.

Reduced saliva flow overnight creates an environment where odour-producing bacteria can become more noticeable. If you also sleep with your mouth open, dryness can make that morning feeling even more obvious.

Brushing your teeth and tongue, cleaning between your teeth and staying hydrated can all form part of a good oral hygiene routine.

If bad breath continues throughout the day despite good oral hygiene, however, it’s worth mentioning when you come and see us.

You Might Be Grinding Your Teeth

Some people clench or grind their teeth while they sleep, a habit known as bruxism.

The interesting part is that you may have no idea you’re doing it.

Sometimes a partner hears the grinding. Other times, the first clue might be waking with a tired jaw, headaches or tenderness around the face. We may also notice signs of wear on the teeth during an examination.

Not everyone who experiences these symptoms is grinding their teeth, so it’s important to have the cause properly assessed rather than assuming.

Mouth Breathing Can Leave You Feeling Dry

If you sleep with your mouth open, you may wake up feeling particularly dry.

Occasional dryness can happen for simple reasons, but regularly waking with a very dry mouth is something worth paying attention to.

Saliva helps protect the teeth and soft tissues of the mouth, so ongoing dry mouth isn’t something you necessarily want to ignore.

If it’s happening frequently, let us know. We can look at what’s happening in your mouth and discuss whether anything needs further attention.

Your Teeth Can Still Be Under Pressure

Sleeping might feel like the ultimate rest period, but your teeth and jaw don’t necessarily get the memo.

Clenching, grinding and certain jaw positions can place pressure on the teeth and surrounding muscles during the night. Over time, some people may notice changes such as tooth wear, sensitivity or jaw discomfort.

Again, these symptoms can have several possible causes. An examination can help us work out what’s happening rather than guessing based on symptoms alone.

Your Nighttime Routine Matters More Than You Might Think

You don’t need an elaborate 10-step routine before bed.

The basics matter most.

Brush thoroughly with fluoride toothpaste and clean between your teeth. Once you’ve brushed for the night, try to avoid going back for another snack or sugary drink before bed.

It’s a small routine that helps set your mouth up for the long stretch ahead.

How Does Your Mouth Feel in the Morning?

Most of us wake up with less-than-perfect breath and a mouth that feels a little different from during the day.

But if you’re regularly waking with jaw pain, headaches, significant dryness, tooth sensitivity or another change you’ve started noticing, come and see us.

We can check your teeth and gums, look for signs of wear or other changes and talk through what you’ve been experiencing.

Get in touch with our team to book an appointment.