Common Causes of Crooked Teeth

April 2, 2019

Millions of people of all ages around the world are affected by crooked teeth. Although we are familiar with crooked teeth, you may not know why teeth become crooked or what can be done to fix crooked teeth. McMurray’s Orthodontist, Severns Dentistry & Orthodontics, has put together some helpful information on the causes of crooked teeth and your options for a straighter smile!

What Causes Crooked Teeth?

Teeth can become crooked for many reasons throughout the various stages of life. The most common causes for crooked teeth include:

Missing Teeth

When you lose your adult or baby teeth early, it can affect the position of your remaining teeth. When you lose a tooth, the teeth that remain can drift into the gaps that have become available. In some cases, baby teeth are replaced by adult teeth, which can overlap and crowd together when space is limited in the mouth.

Ill-Fitting Dental Restorations

If dental restorations such as crown and bridges don’t fit correctly, they can put pressure on your teeth and cause them to change position. Ill-fitting dental restorations can also affect your bite. If your dental restoration begins to create any of these problems, it is crucial to contact Severns Dentistry & Orthodontics as soon as possible.

Gum Disease

Diseases or injuries that affect your gums, like gum disease, can have an impact on your teeth, causing teeth to become loose, change their alignment, and can even cause changes in your bite.

Genetics

In some cases, if your parents have crooked teeth, your genetics can have a significant impact on your chance of inheriting the same issues with your teeth or jaws.

Not Wearing Your Retainer as Directed

This is one of the most common causes of reoccurring with orthodontic patients. To keep your teeth straight, it is essential to follow your orthodontist’s instructions and consistently wear your retainer.

Thumb Sucking

Thumb sucking place pressures on your teeth and can force them to change their position. This can cause an open bite, where your upper and lower teeth will not bite together, leaving a gap between them.

Injury to Your Mouth or Face

The force from an injury to your mouth or face can cause your teeth to change position and become misaligned. Injury to your face can also damage your gums or could also change the position of your jaw and shift your teeth. It is recommended for those who play contact sports to wear a gum shield.

Aging

Your teeth tend to drift forward and become crowded as we age as your jaw bone loses density. This loss of density causes your jaw to change shape which causes your teeth to crowd in the front of your mouth.

Solutions to Correct Crooked Teeth

Regardless of the cause of your crooked teeth, there is a solution to correct them. Braces are a very effective way of straightening teeth and correcting your bite. Braces come in a variety of types from traditional metal braces to clear aligners like Invisalign and lingual braces, which are secured behind your teeth to straighten them discreetly.

Contact Severns Dentistry & Orthodontics today to make an appointment with one of our expert orthodontists in McMurray.

A woman in a white shirt is smiling for the camera.

Author: Natalie Severns, DMD


Upon graduating from the University of Pittsburgh School of Dental Medicine, Dr. Severns specialized in Orthodontics and Dentofacial Orthopedics at the University of Pittsburgh School of Dental Medicine. She then did an externship in London, England, at the prestigious Guy’s Hospital. At this hospital, she learned top therapies in Dentofacial Orthopedics to provide her patients with the best possible facial esthetics.

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With winter in full swing in McMurray and across the South Hills, many people are noticing an unpleasant seasonal change: their teeth feel more sensitive than usual. A rush of cold air, a sip of hot coffee, or even normal breathing outdoors can trigger brief discomfort that wasn’t there during warmer months. Winter tooth sensitivity is common and typically does not signal a serious problem. Understanding why it happens can be reassuring—and can help you recognize when it’s worth mentioning at your next dental visit. Why Teeth Feel More Sensiti ve in Winter Cold weather introduces several challenges that your teeth don’t encounter during other seasons. Sudden temperature changes, dry air, and certain seasonal habits can all exacerbate existing sensitivity. Teeth are not completely solid structures. Beneath the outer enamel is a layer called dentin, which connects to tiny pathways leading toward the inner part of the tooth. When these pathways are exposed or irritated, changes in temperature, especially cold, can be felt more easily. During winter, teeth are exposed to colder air more often, whether you’re walking outside, breathing through your mouth, or moving between heated indoor spaces and freezing outdoor temperatures. These repeated exposures can make even mild sensitivity more noticeable. How Cold Weather Affects Your Teeth Cold air doesn't damage teeth, but it can reveal underlying sensitivities that you already have. When cold temperatures come into contact with teeth, they can cause a slight contraction of the tooth structure. While this movement is minimal, it can still affect areas where enamel has thinned over time. Winter also tends to bring drier air, both outside and indoors, due to the operation of heating systems. Dry air can cause dry mouth, which may reduce the natural protective role of saliva. Saliva helps neutralize acids and wash away particles that can irritate teeth. When saliva levels decrease, teeth may become more sensitive to temperature changes. For individuals with mild sensitivity, these seasonal factors can intensify discomfort, making it feel more frequent or noticeable. The Role of Enamel in Winter Sensitivity Enamel is the protective layer on the outside of your teeth. Its job is to shield the more sensitive inner layers from temperature changes, pressure, and everyday wear. Over time, enamel can thin naturally due to normal use, dietary habits, or grinding and clenching. In winter, thinner enamel doesn’t insulate teeth as effectively against cold air or hot beverages, making them more sensitive. Seasonal sensitivity often brings awareness to enamel health, which is why winter can be a useful time to check in with your dentist, especially if your sensitivity is new or increasing. Why Hot Drinks Can Trigger Discomfort Hot drinks are a winter staple, especially in colder parts of Pennsylvania. Coffee, tea, and soup offer comfort when temperatures drop, but they can also trigger tooth sensitivity for some people. The issue isn’t the drinks themselves, but the contrast between cold air and sudden warmth. Moving quickly from freezing outdoor temperatures to a hot beverage can create a sharp temperature change that sensitive teeth react to. In addition, sipping hot drinks slowly over time means teeth are repeatedly exposed to heat, which can make sensitivity more noticeable during the colder months. Other Winter Habits That May Contribute to Tooth Sensitivity Winter routines can unintentionally impact how your teeth feel day-to-day. Some common seasonal habits include: Mouth breathing in cold air, especially during outdoor activities Clenching or grinding, which can increase during times of stress or disrupted sleep Changes in hydration, as people often drink less water in winter Increased consumption of warm, acidic beverages, such as coffee or citrus-based teas Individually, these habits may seem minor, but when combined, they can make teeth feel more sensitive during the winter season. When Sensitivity Becomes Noticeable Seasonal tooth sensitivity is usually brief and mild, often described as a quick twinge rather than ongoing pain. It may come and go, depending on factors such as weather, diet, or daily routines. However, sensitivity that lingers, worsens, or appears suddenly should be discussed at your next dental appointment. Winter often prompts people to notice changes that may have been easy to overlook during warmer months. 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