Bite Issues

What are bite issues?

Bite issues, also called malocclusions, occur when your upper and lower teeth do not fit together in a balanced, harmonious way when you close your mouth. In an ideal bite, the upper teeth sit slightly in front of the lower teeth, the back teeth interlock like cogs in a well-fitting gear, and the jaw joints move smoothly and comfortably.

When this balance is disturbed, some teeth may meet too heavily, some may not meet at all, and the jaw joints and muscles may be forced to compensate. This can lead to tooth wear, chipping, jaw discomfort, headaches, gum problems, difficulty chewing, and changes in the appearance of your smile and face.

Bite issues can be present from childhood, inherited from the jaw shape and tooth size you were born with, or they can develop later in life as teeth are lost, move, wear down, or as habits such as grinding and clenching create changes over time.

Why bite issues matter

It is easy to assume that “crooked teeth” or a “funny bite” are just cosmetic concerns, but the way your teeth meet has deep, long-lasting effects on your oral health and overall comfort.

Bite problems matter because they can lead to:

• Uneven tooth wear and damage
  When some teeth are overloaded, their enamel can wear down far more quickly than others. This may appear as flattened biting edges, chipped corners, small fractures, or grooves near the gum line. Once enamel is worn away, the softer dentine underneath is exposed, leading to sensitivity and making further wear and decay more likely.
• Cracks and fractures in teeth and restorations
  Concentrated forces on certain teeth can cause small cracks that gradually deepen over years. These cracks may eventually cause pieces of tooth or fillings to break off, often at inconvenient times, and may sometimes extend into the root, leading to the need for more complex treatment or extraction.
• Jaw joint and muscle issues
  When the bite is not balanced, the jaw muscles must work harder to bring the teeth together. Over time, this can create tension and discomfort in the jaw, temples, neck and shoulders. Some people experience clicking, popping, or locking of the jaw joints, and many notice headaches, particularly in the morning if they grind their teeth at night.
• Gum problems and bone loss
  Misaligned teeth can be harder to clean, allowing plaque and bacteria to accumulate in areas that toothbrushes and floss struggle to reach. This increases the risk of gum inflammation (gingivitis) and, if untreated, more advanced gum disease (periodontitis). Over time, this can lead to gum recession and loss of bone support around the teeth.
• Chewing difficulties and digestive strain
  If the teeth do not meet correctly, chewing can be inefficient. Food may not be broken down as thoroughly before it is swallowed, which can contribute to digestive issues and make eating certain foods uncomfortable or difficult.
• Changes in facial appearance and confidence
  Bite issues can influence the profile and lower facial shape. For example, an overbite may reduce chin prominence, while an underbite may create a more protruding lower jaw. Open bites can mean the lips do not close easily at rest. These changes can affect how you feel about your appearance and your confidence in smiling or speaking.

Addressing bite issues is not just about aesthetics. It is about protecting the long term health of your teeth, gums and jaw joints, and maintaining comfortable function throughout your life.

Types of bite issues and how they develop

There are several common types of malocclusion. Many people have a combination rather than a single, neat category.

Overbite and deep bite

An overbite occurs when the upper front teeth overlap the lower front teeth vertically. A small overbite is normal, but when the overlap is excessive, it may be called a deep bite.

In a deep bite:

• The lower front teeth may almost disappear behind the uppers when you bite together.
• The lower front teeth may bite into the gum tissue behind the upper front teeth, causing trauma and recession.
• The back teeth may have less contact, which can overload the front teeth.

Deep bites can be caused by inherited jaw relationships, early loss of back teeth, or habits such as thumb sucking in childhood.

Overjet

Overjet describes how far the upper front teeth protrude horizontally in front of the lower front teeth. People sometimes call this “buck teeth”. Excessive overjet:

• Increases the risk of trauma to the upper front teeth, as they are more exposed.
• Can make biting into foods like apples or sandwiches less efficient.
• May affect speech and appearance.

It can result from jaw discrepancies, habits, or crowding that pushes the upper front teeth forwards.

Underbite

An underbite occurs when the lower front teeth sit in front of the upper front teeth when you bite together.

Underbites can:

• Make chewing challenging, especially for certain foods.
• Cause excessive wear on the front teeth as they clash during biting.
• Create a more prominent lower jaw profile, which may affect facial balance.

Underbites are often linked to differences in upper and lower jaw growth and are commonly inherited.

Crossbite

A crossbite is when some upper teeth bite inside the lower teeth instead of outside where they would normally sit. Crossbites can occur at the front, the sides, or both.

Crossbites can cause:

• Uneven wear on specific teeth.
• Increased risk of gum recession on teeth that are repeatedly hit or pushed out of their ideal position.
• The jaw to shift slightly to one side when closing, leading to asymmetry and muscle strain.

Causes include crowding, abnormal eruption patterns, and underlying skeletal discrepancies.

Open bite

An open bite exists where the upper and lower teeth do not meet when the jaw is fully closed. This is often most noticeable at the front, where a gap remains between the upper and lower incisors even when the back teeth are touching.

Open bites can:

• Make biting into food difficult, as front teeth cannot effectively cut.
• Affect speech, sometimes causing lisps or altered pronunciation.
• Encourage the tongue to push forward into the gap, which can worsen the problem.

They can be associated with long term thumb sucking, prolonged dummy use, tongue thrusting habits, or jaw growth patterns.

Crowding and spacing

Crowding happens when there is not enough space for all the teeth to sit in a neat arch. Teeth may overlap, twist, or become displaced. Spacing is the opposite, where gaps develop between teeth due to missing teeth, small teeth or a large arch.

Both crowding and spacing can disrupt the way the teeth meet and can make cleaning more difficult or less effective.

Bite changes from tooth loss

When a tooth is lost and not replaced:

• Teeth next to the gap may tip or drift into it.
• The tooth opposite the gap may over erupt, moving further out of the gum as it seeks contact.
• This can lead to a “collapsed” bite on one side and excessive loading of the remaining teeth.

These changes usually happen slowly but can significantly alter the bite over time.

Symptoms of bite issues

Bite issues can produce a range of symptoms. Some are obvious, while others are subtle and may only be noticed when specifically discussed.

Common symptoms include:

• Teeth that do not feel like they fit together comfortably
  You may feel that you are searching for a place where the teeth “sit right” or notice that one side touches more than the other.
• Difficulty chewing or biting
  Chewing may be noisier, less efficient, or require more effort. Foods that are hard, chewy or fibrous may be particularly challenging.
• Tooth wear and chipping
  You might notice that the edges of your teeth look flatter, shorter, or more translucent, or that small pieces chip away from time to time.
• Tooth sensitivity
  Worn or cracked teeth can react more strongly to hot, cold or sweet foods and drinks.
• Clicking, popping or grating sounds in the jaw joint
  These sounds can occur when opening, closing, or shifting the jaw and may or may not be painful.
• Jaw, facial or neck pain
  You may experience aching muscles along the jawline, in the cheeks, around the temples, or down into the neck and shoulders, especially after speaking for long periods or after waking up.
• Headaches
  Bite related headaches often occur around the temples or behind the eyes and may be worse on waking if night grinding is involved.
• Gum recession or localised gum problems
  Overloaded teeth can show gum recession along their roots or repeated inflammation in specific areas.
• Aesthetic concerns
  You may feel that your smile looks crooked, that your front teeth stick out or do not show enough, or that your jaw appears unbalanced.

Some people are unaware of any symptoms until they are shown photographs, wear patterns or X-rays that highlight the effects of a long-standing bite issue.

Diagnosis

To understand your bite and its impact, a dentist or orthodontist will usually:

1. Take a detailed history
   They will ask about any pain, clicking, grinding, chewing difficulties, changes in your bite, and any history of trauma to the jaw or teeth.
2. Examine your teeth and bite
   They will look at how your teeth meet in different positions, assess whether certain teeth are overloaded, and note any signs of wear, cracks, chipping or gum recession.
3. Assess jaw joint function
   They may feel the jaw joints as you open and close, check for deviations or restrictions in movement, and note any sounds or discomfort.
4. Evaluate tooth alignment
   They will examine whether the teeth are straight, crowded, spaced or rotated, and how this affects the way they contact each other.
5. Check the gums and supporting bone
   Gum measurements and X-rays may be used to identify bone levels and any signs of periodontitis that could be related to bite overload.
6. Use X-rays or 3D scans
   Radiographs or digital scans help visualise root positions, jawbone structure and the relationship between upper and lower jaws.
7. Record the bite
   Photographs, digital impressions or bite registrations may be taken to analyse your bite precisely and track changes over time.

With this information, the dentist or orthodontist can classify your bite issues and discuss which aspects are purely cosmetic, which are functional, and which may carry a long term risk if left alone.

Treatment and management

The best treatment depends on your specific type of bite issue, its severity, your age, your oral health and your goals. Often, a combination of approaches works best.

Orthodontic treatment

Orthodontics is the most direct way to correct the positions of teeth and, in some cases, to guide jaw relationships.

• Clear aligners
  Systems such as Invisalign use a series of removable clear trays to gradually move teeth into better positions. Aligners are usually changed every one to two weeks and need to be worn for most of the day for best results. They are particularly popular with adults who prefer a more discreet option.
• Fixed braces
  Brackets attached to the teeth and connected by wires can achieve very precise movements, making them suitable for more complex bite issues. These may be metal or tooth coloured ceramic.
• Lingual braces
  These are fixed to the inner surface of the teeth so they are not visible from the front.

Orthodontic treatment can:

• Reduce overbite or overjet
• Close open bites
• Correct crossbites
• Align crowded or spaced teeth
• Distribute biting forces more evenly

Treatment times vary, often between 6 months and 2 years, depending on complexity.

Restorative treatment

When bite issues have already damaged teeth, restorative dentistry may be needed:

• Composite bonding
  Tooth coloured resin can be used to rebuild worn or chipped edges, improving function and appearance. Bonding is conservative but may need maintenance over the years.
• Crowns and onlays
  For heavily worn, cracked or broken teeth, ceramic restorations can restore strength, shape and correct some aspects of the bite.
• Replacing missing teeth
  Bridges, dentures or dental implants can restore gaps so that the bite is more stable and remaining teeth are not overworked.

After restorative treatment, the bite is carefully adjusted so that the new surfaces share the load evenly.

Bite splints and night guards

If grinding or clenching is contributing to a bite problem:

• A custom-made night guard or bite splint can be worn over the teeth while sleeping.
• This device spreads the forces more evenly and protects both teeth and restorations.
• Splints can also help relax the jaw muscles and reduce joint strain.

Night guards are often used alongside orthodontic or restorative treatment for optimum long-term protection.

Addressing skeletal discrepancies

If the jaw bones themselves are significantly out of alignment, especially in younger patients:

• Growth modification may be possible using functional appliances during childhood or adolescence.
• In adults with severe jaw discrepancies, combined orthodontic and surgical treatment may be required. This is usually reserved for complex cases where function and appearance are significantly affected.

Supporting therapies and habits

Sometimes, additional steps are recommended:

• Physiotherapy or jaw exercises to improve muscle balance.
• Speech therapy if tongue position or speech patterns contributed to an open bite.
• Habit retraining for thumb sucking or tongue thrusting in younger patients.

The overall aim is a stable, comfortable and functional bite that supports long term oral health.

Prevention and self-care

While you cannot change the jaw you are born with, you can reduce the risk of bite problems developing or worsening by:

• Maintaining excellent oral hygiene
  Keeping your teeth and gums healthy reduces the risk of tooth loss and gum disease, both of which can destabilise the bite.
• Having missing teeth replaced
  Prompt replacement helps prevent neighbouring and opposing teeth from drifting and changing the bite.
• Avoiding harmful habits
  Resist chewing on hard objects like ice, pens or fingernails, which can chip or move teeth.
• Addressing grinding early
  If you grind your teeth, discuss a night guard with your dentist to protect enamel and prevent bite changes caused by wear.
• Monitoring children’s habits
  Encourage children to stop thumb sucking and prolonged dummy use at an appropriate age, and seek assessment if the front teeth do not meet or if the jaw appears to be shifting.
• Attending regular dental check ups
  Your dentist can spot early signs of bite problems, such as uneven wear, localised gum recession or minor crowding, and recommend timely interventions before issues become more complex.

The sooner a developing bite issue is identified, the easier it usually is to manage.

When to seek urgent dental or medical care

Most bite problems are chronic rather than urgent, but you should seek prompt attention if:

• You develop sudden, severe jaw pain or cannot open your mouth fully.
• You experience a sharp change in your bite, such as teeth no longer meeting properly after a trauma or dental procedure.
• A tooth that has been bearing a lot of pressure cracks, breaks or becomes very painful.
• You have repeated breakages of fillings or crowns on the same tooth or area.
• There is significant swelling, fever or signs of infection around a tooth associated with heavy biting forces.

In these situations, urgent assessment is needed to relieve pain, protect the tooth and address any underlying bite imbalance.

FAQs

What exactly is a “normal” bite supposed to look and feel like?

In a healthy bite, when you close your mouth:

• The back teeth meet evenly and comfortably on both sides.
• The upper front teeth overlap the lower front teeth slightly, both vertically and horizontally.
• There is no feeling that one side hits before the other, and no need to shift your jaw to find a comfortable position.
• The jaw joints move smoothly without clicking, locking or pain, and the muscles around the face and temples do not feel tired or strained after chewing.

Most people are not perfectly aligned, but the more closely your bite approximates this description, the less stress is placed on your teeth and jaws.

Can bite issues really cause headaches and neck pain?

Yes. The bite, jaw joints and muscles are part of a single connected system. When the teeth do not meet evenly, the muscles that control the jaw may have to work harder to bring the teeth together. Over time, this can lead to:

• Muscle fatigue and tension in the jaw, temples and neck.
• Headaches that are often worse in the morning or after long periods of concentration.
• Referred pain, where discomfort originating in the jaw is felt in the head or neck.

Not all headaches are bite related, but many people with chronic jaw clenching or grinding notice improvements once their bite is balanced and their muscles are protected.

If my teeth are straight, can I still have a bite problem?

Yes. It is possible to have straight looking teeth and still have a bite that is not balanced. For example:

• The upper and lower jaws may not be in harmony, leading to overbites or underbites even with relatively straight teeth.
• Certain teeth may carry more pressure than others.
• The back teeth may meet first and heavily, with the front teeth barely contacting.

This is why a full functional assessment is important, not just an evaluation of how straight the teeth appear.

Will orthodontic treatment damage my teeth or roots?

Modern orthodontic techniques are designed to move teeth gently and predictably. When treatment is well planned and monitored, the risk of root shortening or damage is low. Careful assessment before treatment and regular reviews during treatment help ensure that the teeth and supporting bone remain healthy.

Can bite issues be corrected without braces or aligners?

In some cases, minor bite discrepancies can be improved with carefully planned restorative work, such as building up worn teeth or replacing missing teeth in a way that redistributes forces. However:

• Restorative solutions do not move the tooth roots or correct jaw relationships.
• Moderate to severe bite issues usually require orthodontic treatment to address the underlying cause rather than just the symptoms.

Your dentist can explain whether your individual case lends itself to restorative, orthodontic or combined treatment.

Does grinding cause bite issues, or do bite issues cause grinding?

It can go both ways. An uneven bite can encourage grinding as the body unconsciously tries to find a more balanced position. On the other hand, long term grinding can wear down the teeth and gradually change the bite. In many patients, it becomes a cycle where each issue reinforces the other. Treatment often involves both protecting the teeth with a night guard and, when appropriate, correcting the bite.

Are bite problems always inherited?

Genetics play a strong role in jaw size, tooth size and facial structure, so many bite patterns do run in families. However, environmental and behavioural factors are also important. Habits such as thumb sucking, tongue thrusting, mouth breathing, premature tooth loss, trauma and untreated decay can all influence how a bite develops or deteriorates over time.

Is it ever too late to correct a bite problem?

In most cases, no. Adults of all ages can benefit from bite correction, whether through orthodontics, restorative dentistry or a combination of approaches. Treatment planning in adults may need to take account of existing restorations, gum health or bone levels, but meaningful improvements in comfort, function and appearance can often still be achieved.

How long does it take to see benefits from bite treatment?

Some benefits, such as reduced tooth chipping or less strain on a specific tooth, can be noticed quite quickly after restorative adjustments or the fitting of a bite guard. Orthodontic changes take longer, as the teeth and jaws are moved gradually, but many patients begin to feel that their bite is more comfortable within a few months, even before treatment is complete. Full stabilisation and long term benefits are seen once treatment and any retention phase are finished.

Will my bite stay stable after treatment?

After orthodontic treatment, teeth have a natural tendency to drift back towards their original positions. To prevent this, retainers are almost always recommended. Retainers are typically worn every night or according to your orthodontist’s instructions. With restorative work, correct design and maintenance, the bite can remain stable for many years, particularly if grinding is controlled and oral hygiene is excellent.

Call to action

If you have noticed that your teeth do not meet comfortably, you experience jaw tension or headaches, or you see signs of wear or chipping on your teeth, it may be related to a bite issue. Our team can carry out a detailed assessment, explain what is happening in clear terms and outline the treatment options available to improve your comfort, function and confidence. Contact us to arrange a consultation.