bad breath because of mouth breathing woman pinching her nose

Mouth Breathing & Your Oral Health

Mouth breathing is necessary when you have a cold, flu, or allergies that cause congestion and make it impossible to breathe through your nose. However, chronic mouth breathing is bad because it can often lead to problems, like dry mouth, bad breath, sleep apnea, and more.

Some people breathe through their mouths only when they are asleep or have nasal congestion. However, some people are mouth breathers on a day-to-day basis. Allergies often give way to mouth breathing, as well as issues such as chronic nasal obstruction and even stress and anxiety.

The most common cause of mouth breathing is nasal obstruction, which leads to difficulty breathing, poor sleep and poor oral health.

Unfortunately, other harmful health concerns contribute to mouth breathing as well. Many people don’t realize mouth breathing can actually be a complex health concern and should be checked out by your dentist and physician.

Is Mouth Breathing Bad?

Those who breathe through their nose are less likely to have poor posture, clench their teeth, snore at night, or develop a bad facial profile. Nose breathing allows the nose to filter and humidify air as it enters the body. 

Another key function of the nose is to produce nitric oxide, which helps the lungs absorb and transport oxygen throughout the body. Nitric oxide also improves the immune system because it is an antifungal, antiviral, antiparasitic, and antibacterial.

When air bypasses the nose and enters through the mouth, the air is more dry. In your mouth, saliva washes bacteria out. Not only do bacteria thrive in a dry environment, but a lack of cleaning saliva leads to cavities, tooth decay, and gum disease.

In addition, mouth breathing can also lead to dehydration, as the body loses moisture through evaporation. 

Why You Should Breathe Through Your Nose

  • Tiny nose hairs, called cilia, filter and trap small particles in the air, like pollen, dust, and small bugs.
  • The nose humidifies the air to prevent dryness of the lungs and bronchi.
  • The nose warms cold air up to body temperature. Lungs thrive when the air is warm.
  • Nose breathing increases oxygen uptake by adding resistance to the airflow and maintaining the elasticity of the lungs.

little girl mouth breathing while asleep

13 Signs and Symptoms of Mouth Breathing

How do you know if someone may be suffering from the ill effects of a mouth breather? There are several signs and symptoms that tell you whether someone you know or you yourself suffer from poor breathing.

  • Crowded teeth
  • Dry mouth
  • Dry lips
  • Red or inflamed gums
  • Cavities
  • Bad breath
  • Sore throat
  • Digestive upset
  • Chronic fatigue
  • Short attention span
  • Restlessness or hyperactivity
  • Decreased productivity
  • Snoring
  • Morning headaches
  • Frequent airway infections
  • Cold symptoms
  • Health Issues Caused By Mouth Breathing
  • Mouth breather chin and mouth breather jaw from improper facial growth

Mouth breathing can alter your child’s face shape and jaw position. How? The Human Growth Hormone (HGH) releases during deep sleep. That hormone affects a child’s brain development and long bone growth. Since mouth breathing disrupts deep sleep, those who breathe through their mouth can suffer from improper growth.

This impairment is most often seen in children because of their rapid growth compared to adults. Improper facial growth often leads to long, narrow faces with regressed cheekbones, lower jaw, and chin. Because of this, teeth may become crooked, while smiles may appear gummier.

Even poor posture can result from the facial structure and skeletal issues connected with chronic mouth breathing. In order to breathe more easily, the airway must be open. Hunched shoulders and a forward-leaning head help to open the airways while negatively influencing posture.

Mouth Breathing & Speech Impediments

Breathing issues can change the way the tongue works, known as a “tongue thrust,” which negatively affects speech, swallowing, and chewing. 

The tongue applies pressure to the roof of the mouth during speech and swallowing. When a child grows, the pressure their tongue applies to the hard palate and upper teeth grows the palate wider. Since the hard palate and base of the nose are the same, a wider palate increases the size of the nasal passageways. If the palate does not expand enough for air to come through the nose, then the child will breathe through their mouth.

A small palate can also lead to tongue thrust. With tongue thrust, the tongue protrudes, or pushes forward, during speech and swallowing. As a result, mouth-breathing children between the ages of 4 and 12 have speech alterations and impediments such as sound omissions, lisps, and articulatory disorders. Depending on the severity of the speech impediment(s), a speech pathologist may be necessary to correct speech alterations and slurs.

Teeth also become affected by tongue thrust and mouth breathing. Tooth stability weakens, which can change tooth alignment and cause crooked teeth. Even after braces removal, mouth breathers experience orthodontic relapse and may need braces again.

These issues could lead to a child feeling self-conscious.

Mouth Breathing vs. ADD and ADHD

Because mouth breathing leads to chronic fatigue, even with eight hours of sleep, your child may have symptoms, like hyperactivity, restlessness and a short attention span, that look like ADD or ADHD. Furthermore, children who lack quality sleep may be moody, emotionally explosive, or aggressive. 

Since these symptoms mirror ADD or ADHD, doctors often misdiagnose children who simply have breathing problems.

Snoring & Sleep Apnea Caused By Mouth Breathing

Because mouth breathing is most often a result of nasal obstruction, sleep issues are common. Snoring and nights filled with poor sleep are more prevalent in mouth breathers as well. The resulting fatigue and headaches can be debilitating! Sleep is vital at all ages, and anything that inhibits quality sleep should be properly addressed.

Also, this can further affect and aggravate sleep apnea. Untreated obstructive sleep apnea can cause depression, anxiety, weight gain, and high blood pressure. Therefore, mouth breathing and sleep apnea can be a deadly combo. To breathe better at night, you treat sleep apnea with an oral appliance like MAD.

Sleeping With Your Mouth Open

When you sleep, your body relaxes, and your breathing becomes shallow. This can cause your mouth to fall open, which can lead to a number of problems.

First, it can cause you to snore. Snoring occurs when the airway is obstructed, and mouth breathing is one of the most common causes of obstruction. In addition, mouth breathing can dry out your mouth, leading to bad breath and an increased risk of gum disease.

Second, when oxygen is inhaled through the mouth rather than the nose, your blood is not actually getting all of the oxygen that it needs. This can lead to heart problems and other health issues.

Finally, sleeping with your mouth open can also lead to teeth grinding (bruxism). If you regularly wake up with a headache or a sore jaw, it may be because you’re grinding your teeth at night. If you’re concerned about any of these issues, talk to your doctor or dentist. They can help you find ways to reduce the effects of mouth breathing.

What Causes Mouth Breathing?

In order to correct mouth breathing, you need to first determine the cause. Generally speaking, a deficiency in the size of the nasal passageway and a poorly functioning tongue and airway leads to chronic mouth breathing.

Your body needs oxygen. So, if there is not enough space in the nose for air to flow through to the lungs, then someone will breathe through the mouth for oxygen. Thankfully, there are simple ways to enlarge nasal passages to let air through.

The first suggestion your dentist might give to expand the nasal passage is to use a palatal expander. Because the palatal bone (maxilla) and the base of the nose are the same, expanding the palate increases space for nasal breathing.

Orthodontic expanders that widen the palate usually do a good job of helping those with a mouth breathing habit to take in air through the nose. However, surgery may be necessary in some cases after using the expander. If enlarged nasal turbinates cause nasal congestion, they will need to be reduced in size through surgery.

What Can Be Done to Help Limit Mouth Breathing?

Even with enlarged nasal passages, mouth breathers need to strengthen their tongue, improve the tongue’s posture into the palate with suction. Furthermore, diaphragm and rib cage muscles need more strength to correctly let air into the lungs. Below are exercises to practice strengthening muscles and posture related to nose breathing.

Practice Breathing Through the Nose

This exercise improves nasal breathing, which helps stabilize the airway during sleep

  1. Inhale through the mouth and relax the jaw.
  2. Then take a finger or knuckle and close one nostril.
  3. Slowly exhale through the open nostril.
  4. Do this about 10 times, alternating between nostrils.
  5. You may notice that one nostril tends to be more blocked than the other. Try to breathe through the blocked nostril.

Tongue Exercises to help

  1. Tongue Slide

This exercise will help strengthen the muscles of the tongue and throat.

Place the tip of your tongue on the back of your upper front teeth. Slowly slide the tongue back with the tip moving along the roof of the mouth. Repeat 5 to 10 times.

  1. Tongue Stretch

This exercise will help increase the strength of the tongue.

Pull your tongue out as far as you can. Try to touch your chin with your tongue while looking up at the ceiling. Hold for 10 to 15 seconds and gradually increase the time. Repeat 5 times.

  1. Push the Tongue Up

This exercise will help improve the tone and strength of the tongue and soft palate.

Bring the tongue upwards against the roof of the mouth and press the whole tongue into it. Hold this position for 10 seconds. Repeat 5 times.

  1. Tongue Thrust Down

This exercise will help improve the timbre and strength of the tongue and soft palate.

Place the tip of your tongue against your lower front teeth, then push your tongue back down to the floor of your mouth. Hold this position for 10 seconds. Repeat 5 times.

How to Prevent Mouth Breathing

The key to prevent mouth breathing is to make sure you can breathe through your nose properly. When you decrease the risk of nasal congestion, you can help stop a mouth breathing habit.

Ways to Improve Nose Breathing

  • Use saline mist on long flights or cruises
  • Use saline mist and nasal sprays and decongestants or allergy medications at the first sign of an allergy or cold
  • Keep your home clean and allergen-free
  • Install air filters in heating and air conditioning (HVAC) systems to prevent the spread of substances and allergens in your home

Contact Your Dentist at Snodgrass-King for More Help for Mouth Breathing

Thankfully, mouth breathers can learn to change this habit. Ensure that your child’s presumed “ADD” or “ADHD” is not actually a lack of focus caused by poor sleep due to breathing issues. Look for the previously mentioned signs and symptoms, and take action. Breathing issues can be corrected, but it is easier to correct when caught early. Parents, keep an eye out and call us or book online to schedule a thorough dental exam for your child.