Malocclusions of teeth are one of the most common dental concerns I see in my clinic. Imagine biting into a crisp apple, only to find your teeth do not line up. Or perhaps you notice some teeth overlap while others sit too far apart. Patients often visit asking why their bite feels “off” or why their jaw clicks when they chew. In almost every case, malocclusions of teeth are the answer.

The term might sound complex, but malocclusions of teeth simply means teeth that do not fit together correctly when you close your mouth. This guide explains what dental malocclusion means, the different types, what causes them, their symptoms, and the best modern treatments available in 2026. Whether you have a minor concern or need severe malocclusion treatment, understanding your bite is the first step toward a healthier smile.

What Is Malocclusion of Teeth? Definition and Meaning

Malocclusions of teeth is the clinical term for the improper alignment of your upper and lower teeth when you close your mouth. The word comes from the Latin roots — “mal” meaning bad, and “occlusion” meaning the way your teeth meet.

In a perfect Class 1 dental occlusion, your upper teeth slightly overlap your lower teeth. The points of your upper molars fit into the grooves of your lower molars — much like gears in a watch. When those gears do not align, you have an occlusion disorder, or an improper bite.

This dental bite misalignment affects far more than your smile. Chewing, speech, and even breathing can all be impacted. The Canadian Dental Association (CDA) confirms that significant jaw positioning issues require professional dental bite correction. Left untreated, they lead to long-term oral health problems.

Signs and Symptoms of Malocclusion of Teeth

Many patients do not realize they have malocclusions of teeth until a dentist spots it during a routine exam. Symptoms can range from very obvious to surprisingly subtle. Common signs include:

  • Visible bite misalignment: Your upper and lower front teeth do not line up when you close your mouth.
  • Difficulty chewing or biting: Food is hard to bite through, or chewing feels uneven and uncomfortable.
  • Speech problems: Dental malocclusion affects how you pronounce certain sounds. Lisps and articulation difficulties are especially common with underbites and open bites.
  • Jaw pain and headaches: A misaligned bite creates uneven muscle tension. Temporomandibular joint (TMJ) strain is one of the most consistent complaints we hear from patients with bite problems.
  • Mouth breathing: Severe dental crowding or jaw misalignment can force patients to breathe through the mouth rather than the nose.
  • Teeth grinding (Bruxism): Bite abnormalities often cause clenching or grinding, especially at night.
  • Clicking jaw: A popping sound in the jaw joint when eating or yawning is frequently linked to improper bite alignment.

Recognizing any of these symptoms is a good reason to book an assessment. Our team at Galt Dental Care diagnoses these concerns every day and can identify the specific type of occlusion disorder you are dealing with.

What Causes Malocclusion? Common Risk Factors

Malocclusions of teeth are rarely the patient’s fault. Genetics is the most common culprit. If your parents had crowded teeth, an overbite, or jaw alignment issues, you likely inherited those same traits. Beyond genetics, environmental factors and childhood habits also play a major role. Common causes of malocclusion in adults and children include:

  • Genetics and jaw size: Jaw size and shape are inherited. Teeth too large for the jaw cause dental crowding. A jaw that is too small throws off the entire dental occlusion classification.
  • Prolonged childhood habits: Thumb sucking, pacifier use past age three, or tongue thrusting push developing teeth out of position. These habits are a leading cause of malocclusion in children.
  • Missing or extra teeth: Losing a tooth early causes neighbouring teeth to shift into the gap. Over time, this creates crooked teeth malocclusion and alters dental bite alignment.
  • Ill-fitting dental restorations: Poorly shaped crowns, fillings, or appliances can change how your teeth meet.
  • Jaw trauma: A jaw injury that heals incorrectly can cause permanent bite misalignment.
  • Tumours and abnormal growths: In rare cases, growths in the mouth or jaw alter the relationship between the upper and lower teeth.

To protect your child’s developing bite from an early age, visit our children’s dentist page in Cambridge.

The 3 Types of Malocclusion: Angle’s Dental Occlusion Classification

Dentists classify bite problems using Angle’s classification of malocclusion. Developed by Dr. Edward Angle — the father of modern orthodontics — this system divides malocclusions into three classes. Each class is based on how the upper and lower first molars relate to each other. Understanding the different types of malocclusion in dentistry is essential for choosing the right treatment.

Class 1 Dental Occlusion: The Most Common Type

A Class 1 dental occlusion — also written as Class I malocclusion — is the most common malocclusion type. The upper and lower molars align correctly. From back to front, the bite is technically normal.

So why is it still a malocclusion type? Even with a correct jaw relationship, individual teeth may be crowded, spaced, rotated, or crooked. Class 1 occlusion problems are about tooth position rather than jaw position. That generally makes them among the more straightforward cases to treat.

Class II Malocclusion: Overbite and Retrognathism

Class II malocclusion — also called retrognathism — occurs when the upper jaw protrudes significantly ahead of the lower jaw. Most patients and parents recognize this as a severe overbite or overjet.

This typically develops when the lower jaw is underdeveloped or the upper jaw is overdeveloped. Class II malocclusion treatment options vary by age. In growing children, orthodontists use functional appliances to guide lower jaw growth. In adults, Class II malocclusion braces or clear aligners reposition the teeth. Severe cases may require orthognathic surgery.

Our orthodontic services in Cambridge include customized plans for both children and adults with Class II bite issues.

Class 3 Occlusion: Underbite and Prognathism

Class 3 occlusion — also referred to as Class III malocclusion or prognathism — occurs when the lower jaw protrudes forward beyond the upper jaw. The lower teeth then overlap the upper front teeth. This is commonly called an underbite.

This type of improper bite can give the face a “bulldog” appearance. It is often the most complex of the three classes to correct. Class 3 occlusion correction methods typically require early orthodontic intervention. In severe adult cases, orthodontic treatment is combined with orthognathic jaw surgery.

Other Common Types of Bite Alignment Problems

Beyond the three main classes of malocclusion, dentists also diagnose these additional bite alignment issues:

  • Crossbite: Some upper teeth sit inside the lower teeth when biting down. A crossbite can occur on one or both sides. Left untreated, it causes uneven jaw wear.
  • Open Bite: The back teeth touch but the front teeth do not close together, leaving a visible gap. An open bite commonly results from prolonged thumb sucking or tongue thrusting.
  • Crowded Teeth (Dental Crowding): When the jaw lacks space for all the teeth, they twist, overlap, and bunch together. This makes cleaning difficult and increases decay risk.
  • Diastema (Teeth Spacing Issues): Gaps between teeth are often caused by missing teeth or a jaw that is proportionally larger than the teeth it holds.

Malocclusion in Children: Why Early Detection Matters

Malocclusion in children is particularly important to detect early. Children’s bones and jaws are still developing, which gives orthodontists a significant advantage. Early orthodontic treatment — sometimes called Phase 1 treatment — can guide jaw growth and create space for permanent teeth. It also reduces the severity of bite alignment issues before they become harder to correct.

Signs of malocclusion in children include difficulty chewing, mouth breathing, and early or late loss of baby teeth. Thumb sucking past age four and visible teeth misalignment are also warning signs. The American Dental Association (ADA) recommends an orthodontic evaluation by age seven. Early assessment allows developing bite problems to be identified before they worsen.

Visit our Cambridge children’s dentist page to learn about paediatric dental assessments and early bite monitoring at Galt Dental Care.

How Dentists Diagnose Malocclusion

Accurate diagnosis of malocclusions of teeth relies on modern technology — not just a visual check of your smile. During your exam, we evaluate how your upper and lower teeth come together. Where bite alignment issues are suspected, we proceed with:

  • 3D CBCT Scans: Give us a complete three-dimensional view of your jaw, teeth roots, and bone structure.
  • Digital Impressions: Provide accurate models of your bite without the discomfort of traditional putty moulds.
  • Panoramic X-Rays: Show all teeth, roots, and jaw joints in a single image.
  • Facial Profile Analysis: Identifies skeletal discrepancies that may require jaw alignment treatment beyond standard orthodontics.

This diagnostic process determines the correct class of malocclusion. From there, we build a personalized orthodontic treatment plan. Our preventive dental exams in Cambridge are often the first appointment where bite misalignment is found — long before symptoms become painful.

Best Malocclusion Treatment Options in 2026

The best treatment for malocclusions of teeth depends on the type, severity, your age, and your personal goals. Below is a comprehensive look at the most effective orthodontic treatments available today.

Braces for Malocclusion

Traditional metal and ceramic braces remain the gold standard for correcting all classes of malocclusion. They give orthodontists the most precise control over tooth movement. That makes them the preferred choice for complex dental bite correction cases.

Modern braces for malocclusion are smaller, more comfortable, and faster than older versions. Class II malocclusion braces and Class III correction plans are both highly achievable with today’s bracket-and-wire systems. Malocclusion treatment recovery time with braces typically ranges from 18 to 30 months, depending on severity.

Invisalign for Malocclusion: Can Clear Aligners Fix a Bad Bite?

One of the most common questions I receive is: Can Invisalign fix malocclusion? The answer is yes — for a wide range of cases. Invisalign treatment has advanced significantly in recent years. The newest Invisalign technology for bite correction treats most Class I malocclusions, many Class II malocclusions, and select Class III cases.

Clear aligners for malocclusion offer a discreet, removable alternative. Adult patients and teens prefer them for lifestyle reasons. Aligners must be worn 22 hours per day. Compliance is essential for the best results.

When comparing Invisalign vs braces for malocclusion, the right choice depends on the complexity of your case. Our team will walk you through the dental bite correction cost and both options in detail. Explore our Invisalign clear braces page in Cambridge to see if you are a candidate.

Night Guards for TMJ Pain Caused by Bite Misalignment

An untreated improper bite places significant strain on the temporomandibular joint (TMJ). Jaw pain, clicking, and chronic headaches are common results. Uneven bite pressure is one of the most frequently overlooked consequences of unaddressed dental bite problems.

Custom night guards for TMJ and bruxism are often the first line of defense. They protect your teeth from grinding and reduce jaw muscle tension while orthodontic treatment is planned or underway.

Restorative Dentistry for Bite Problems from Missing Teeth

Missing teeth are a common contributor to dental bite alignment problems. Restorative solutions restore the physical spacing your bite needs. Crowns and bridges in Cambridge and dental implants prevent neighbouring teeth from drifting. They also maintain jaw bone density and re-establish a stable bite relationship.

Orthognathic Surgery: Severe Malocclusion Treatment

For the most severe malocclusion cases, the jaw bones themselves are significantly misaligned. Orthodontic appliances alone cannot achieve full correction. In these situations, severe malocclusion treatment involves orthognathic (jaw repositioning) surgery combined with orthodontic treatment.

The process typically follows three stages. First, pre-surgical orthodontics aligns the teeth. Next, an oral and maxillofacial surgeon repositions the jaw. Finally, post-surgical orthodontics refines the final bite. While this is the most involved treatment pathway, the results are life-changing for patients with significant jaw discrepancies.

Invisalign vs Braces for Malocclusion: Which Is Right for You?

Patients frequently ask me to compare Invisalign vs braces for malocclusion. Here is a practical breakdown based on clinical needs and lifestyle:

  • Braces for malocclusion work best for: severe cases, complex Class II and Class III corrections, younger patients who may struggle with aligner compliance, and cases requiring precise root movement control.
  • Invisalign for malocclusion works best for: mild to moderate Class I and Class II cases, adult professionals who prefer a discreet option, and patients who want to remove their appliance to eat and clean their teeth.

Both options are available at our Cambridge clinic. Our orthodontist will evaluate your specific occlusion disorder. From there, we recommend the approach most likely to achieve the best result for your situation.

What Happens If Malocclusion Is Untreated? Long-Term Effects

Leaving malocclusions of teeth unaddressed has real consequences for your oral and overall health. Understanding these risks is an important part of making an informed decision about your care:

  • Tooth decay and gum disease: Crooked teeth and dental crowding make cleaning far more difficult. Plaque builds up in hard-to-reach areas, increasing decay and gum disease risk significantly.
  • Premature enamel wear: Bite abnormalities place uneven pressure on specific teeth. Over time, this wears enamel down and leads to chipped or cracked teeth.
  • Tooth loss: Untreated dental bite problems contribute directly to decay and gum disease — two of the leading causes of adult tooth loss.
  • TMJ disorders: Bite misalignment strains the jaw muscles and TMJ joint. Patients experience chronic jaw pain, clicking, difficulty opening the mouth fully, and persistent headaches.
  • Speech and chewing difficulties: Open bites and underbites affect how clearly patients articulate certain sounds. Lisps and pronunciation difficulties are common speech-related complaints.
  • Reduced self-confidence: Misaligned teeth affect how patients feel about their smiles. Social confidence and quality of life are both impacted.

Does Malocclusion Worsen Over Time?

Malocclusions of teeth do tend to worsen gradually. A natural process called mesial drift causes teeth to shift forward over time. An existing bite problem will rarely self-correct. Without treatment, it almost always progresses.

According to the American Dental Association (ADA), addressing orthodontic problems early reduces treatment complexity and cost significantly. The sooner you act, the simpler the solution.

If you are already experiencing jaw pain or bite-related discomfort, our team offers same-day emergency dental care in Cambridge.

Affordable Malocclusion Treatment and Bite Correction in Cambridge

Searching for a bite correction specialist in Cambridge? Our team at Galt Dental Care is here to help. We provide honest, comprehensive assessments and personalized orthodontic treatment plans for every class and type of malocclusion.

Our approach is transparent. We explain your specific dental occlusion classification clearly. We discuss dental bite correction cost openly. Then we help you choose between braces for malocclusion or clear aligners for malocclusion based on what genuinely works best for your case.

We welcome all patients covered under the Canadian Dental Care Plan (CDCP). Visit our direct billing page to learn how we submit insurance claims on your behalf. Dental care should never be a financial barrier.

Ready to Correct Your Bite? Book a Same-Day Consultation.

Unsure about your malocclusion class? Comparing Invisalign vs braces? Experiencing jaw pain and clicking? Do not wait. Our team at Galt Dental Care in Cambridge, Ontario provides thorough malocclusion assessments and evidence-based treatment recommendations.

Same-day appointments, direct billing to most insurance providers, and personalized orthodontic plans are all available.

Book your malocclusion consultation at Galt Dental Care today →

Frequently Asked Questions About Malocclusions of Teeth

Understanding Malocclusion

What is malocclusion of teeth?

Malocclusion of teeth refers to the misalignment of the upper and lower teeth when the mouth is closed. It includes bite problems such as overbites, underbites, crossbites, open bites, and crowded teeth. The condition is classified into three main types using Angle’s classification: Class I, Class II, and Class III.

What are the 3 types of malocclusion?

The 3 types of malocclusion according to Angle’s dental occlusion classification are Class I, Class II, and Class III. With Class I, the jaw relationship is normal but individual teeth are crowded or misaligned. An overbite or upper jaw protrusion defines Class II. An underbite or lower jaw protrusion defines Class III. Each class has different causes, appearances, and treatment approaches.

What causes malocclusion?

The most common cause of malocclusion is genetics. Jaw size, tooth size, and their relationship are all inherited. Other causes include prolonged thumb sucking, early tooth loss, ill-fitting dental restorations, jaw trauma, and tongue thrusting habits in childhood.

Can malocclusion be fixed without braces?

Mild to moderate dental malocclusion can often be corrected using clear aligners like Invisalign. In minor cosmetic cases, dental bonding, veneers, or crowns may also be used. Complex Class II or Class III bite alignment issues, however, typically require traditional braces or a combination of orthodontics and surgery.

Can Invisalign fix malocclusion?

Invisalign can fix malocclusion in many cases. Clear aligners work well for Class I malocclusions and many Class II cases. Severe Class III malocclusions — or those requiring significant jaw repositioning — may still need braces or surgery. A consultation with an orthodontist will determine whether Invisalign is right for your specific bite.

Does malocclusion get worse with age?

Malocclusions of teeth do tend to worsen over time. A natural process called mesial drift causes teeth to gradually shift forward. Untreated bite misalignment also creates uneven pressure. This accelerates enamel wear and gum recession. Early treatment produces better outcomes and is generally less complex and less costly.

Treatment and Prognosis

Can malocclusion cause jaw pain and headaches?

Bite abnormalities place uneven stress on the jaw muscles and TMJ. Chronic jaw pain, a clicking or popping jaw, and recurring headaches are frequent results. Many patients report significant relief from jaw pain after completing orthodontic treatment for malocclusion.

Is malocclusion hereditary?

Malocclusion is largely hereditary. Jaw size, tooth size, and the spatial relationship between upper and lower teeth are all genetically determined. If your parents or siblings needed orthodontic treatment for bite alignment issues, there is a strong chance you or your children will too.

How do dentists diagnose malocclusion?

Dentists diagnose malocclusions of teeth through a comprehensive clinical exam. This includes a visual bite assessment, 3D CBCT scans, digital impressions, and panoramic X-rays. These tools allow us to classify the occlusion disorder accurately and plan the most effective orthodontic treatment.

How long does it take to fix malocclusion?

Treatment duration depends on the severity of the case and the type of treatment used. Minor Class I bite alignment issues treated with clear aligners may take 6 to 12 months. Comprehensive braces for Class II or III malocclusion typically require 18 to 30 months. Cases involving orthognathic surgery have longer timelines, covering pre- and post-surgical orthodontic phases.

Related Services at Galt Dental Care

Bite correction is one part of a broader oral health picture. These services connect directly to malocclusion treatment and long-term dental health:

Trusted External Resources

The clinical classifications, symptom descriptions, and treatment protocols in this guide align with guidelines from leading dental health authorities:

How This Article Was Created

Clinical Accuracy: All content is based on established clinical dental guidelines and Angle’s classification of malocclusion. Facts were reviewed against standards set by the ADA, the CDA, and Health Canada.