Overjet (Buck Teeth): Causes and Management Options
An overjet describes a horizontal gap between the upper front teeth and the lower teeth. When the upper teeth appear to protrude further forward than usual, it may affect bite alignment, chewing, and oral comfort.
Some people notice aesthetic concerns, while others may experience functional symptoms. Professional dental assessment can help evaluate bite position and oral health.
Professional Assessment
A thorough clinical evaluation can assess bite alignment, evaluate the degree of forward tooth projection, and help determine the most appropriate course of care.
“The team explained my bite alignment clearly and discussed all of the options available to me.”
What Is an Overjet?
An overjet occurs when the upper front teeth extend significantly forward compared to the lower teeth, creating a noticeable horizontal gap between them. It is sometimes referred to as “buck teeth” in everyday language, though the clinical term is overjet. The degree of forward projection varies between individuals — a small amount of forward positioning is considered normal and is present in most people, but a more pronounced overjet may warrant professional evaluation.
Mild Overjet
A mild overjet may not cause noticeable symptoms or functional concerns. Many people have a slight forward positioning of the upper front teeth that does not require treatment. Regular dental examinations can help monitor bite alignment over time and identify any changes that may develop.
Moderate to Pronounced
A more pronounced overjet may influence bite mechanics and tooth wear. When the upper front teeth extend significantly forward, it may alter how forces are distributed during chewing and may increase the exposure of the front teeth to accidental impact or trauma.
Assessment Matters
Professional dental assessment can help evaluate the degree of overjet, determine whether it is affecting oral health or function, and guide decisions about whether monitoring or active management may be appropriate. Each individual’s situation is unique.
A can assess bite alignment, evaluate the position of the front teeth, and help determine whether any further investigation or care may be appropriate.
Common Causes of an Overjet
An overjet may develop due to a combination of factors rather than a single cause. Understanding the potential contributing factors can help inform decisions about monitoring and care.
1Genetic Factors Affecting Jaw Growth
Genetics play a significant role in determining jaw size, jaw shape, and tooth position — all of which influence bite alignment. If the upper jaw (maxilla) is proportionally larger than the lower jaw (mandible), or if the teeth are positioned further forward on the upper arch, an overjet may develop. Family history of similar bite characteristics may be relevant.
2Differences in Jaw Development
The upper and lower jaws grow at different rates during childhood and adolescence. If the upper jaw develops more prominently, or if the lower jaw is relatively smaller or set further back, the upper front teeth may sit noticeably forward of the lower teeth. These developmental differences are among the most common factors associated with an overjet.
3Childhood Habits
Habits during childhood, such as prolonged thumb sucking, dummy (pacifier) use, or finger sucking, may influence how the teeth and jaws develop. These habits can apply sustained forward pressure on the developing upper front teeth, gradually pushing them into a more forward position and contributing to an increased overjet.
4Tongue Posture and Tongue Thrusting
The resting position of the tongue and certain swallowing patterns may influence tooth position over time. Tongue thrusting — where the tongue pushes forward against the front teeth during swallowing or at rest — can exert repeated pressure on the upper front teeth, potentially contributing to their forward movement and an increased overjet.
5Tooth Loss Affecting Bite Balance
When teeth are lost — whether due to decay, gum disease, or injury — the remaining teeth may gradually shift position over time. This movement can alter bite alignment and may contribute to changes in the relationship between the upper and lower front teeth. Replacing missing teeth promptly may help preserve bite balance.
Multiple factors may contribute to an overjet simultaneously. A professional can help identify which factors may be most relevant and guide appropriate management.
When an Overjet May Need Professional Assessment
A mild overjet may not require treatment, but certain signs may suggest that professional evaluation could be beneficial. Assessment can help determine whether the overjet is affecting oral health, function, or comfort, and guide decisions about care.
Front Teeth Appear Significantly Protruded
If you notice that the upper front teeth sit noticeably further forward than the lower teeth, or if the degree of forward projection appears to have changed over time, professional assessment may be appropriate. Evaluation can help determine whether the overjet is within a normal range or may benefit from management.
Teeth Show Signs of Wear or Damage
When the bite is misaligned, some teeth may experience uneven forces during chewing, which can contribute to wear, chipping, or microfractures over time. If you notice changes in the shape or edges of the front teeth, or if restorations seem to fail more frequently, bite alignment may be a contributing factor.
Chewing or Speech Feels Affected
A pronounced overjet may influence how effectively the front teeth work during biting and chewing. In some cases, it may also affect speech clarity — particularly with certain sounds that require contact between the tongue and the front teeth. If you notice changes in how you chew or speak, a dental assessment may be helpful.
Jaw Discomfort or Bite Imbalance
An overjet may sometimes contribute to jaw muscle strain or a sense of bite imbalance — particularly if the jaw has to adjust its position during chewing or at rest. Some individuals may notice aching in the jaw muscles, around the temples, or near the jaw joints. These symptoms may benefit from professional evaluation.
When to Seek Assessment
Professional evaluation may be helpful if you notice any of the following. These signs do not necessarily indicate a serious problem, but timely assessment can support informed decisions about care.
Upper front teeth sit noticeably forward of the lower teeth
Visible wear, chipping, or damage to the front teeth
Difficulty biting into certain foods comfortably
Changes in speech clarity or articulation
Jaw aching, fatigue, or muscle strain
Concerns about the appearance of protruding teeth
Assessment and advice for overjet concerns are available at our London clinic, where professional evaluation can help determine the most appropriate course of care.
Oral Health Effects Linked to Overjet
A pronounced overjet may contribute to a range of oral health effects over time. The extent of these effects varies between individuals and depends on the degree of the overjet and other clinical factors.
Professional dental assessment may help evaluate bite balance and tooth health. Treatment depends on clinical evaluation and the individual’s specific circumstances.
Potential Effects on Oral Health
Front teeth that protrude further forward may be more exposed during physical activity, sports, or accidental impact. This increased exposure may raise the likelihood of dental trauma — such as chipping, fracture, or displacement — compared to teeth that sit in a more sheltered position within the dental arch.
An overjet may alter the distribution of biting forces, meaning that certain teeth may experience greater or different pressure than they would in a well-aligned bite. Over time, this may contribute to uneven wear patterns — particularly on the biting edges of the front teeth or the cusps of the back teeth.
When the bite is misaligned, the jaw muscles may work differently during chewing, speaking, or at rest. In some cases, this compensation may contribute to muscle fatigue, jaw aching, or tension — particularly around the temples or jaw joints. Professional care may help identify contributing factors.
In some individuals with a more pronounced overjet, the upper front teeth may be more difficult to cover with the lips at rest, potentially affecting lip posture and comfort. This may also influence the tendency for the lips or mouth to become dry, and may affect confidence in some individuals.
Preventive and Professional Care
Managing an overjet involves monitoring bite alignment, assessing any effects on oral health, and determining whether active treatment may be appropriate. Regular dental care plays an important role in maintaining bite health and identifying changes over time.
Monitoring and Preventive Measures
Regular dental examinations help monitor bite alignment and tooth wear, allowing early identification of any changes in the relationship between the upper and lower front teeth.
Dentists may evaluate jaw function and tooth position to assess whether the overjet is affecting chewing efficiency, speech, or jaw comfort.
Monitoring symptoms — such as tooth wear, jaw aching, or changes in the degree of forward projection — may form part of ongoing dental care.
Protective measures — such as custom mouthguards during sports — may be recommended if the overjet increases the exposure of the front teeth to potential trauma.
Professional Treatment Options
Treatment planning for an overjet may involve restorative or orthodontic considerations, depending on the underlying cause and the degree of bite misalignment. Orthodontic treatment can adjust tooth positions, while or may address both function and aesthetics.
may be considered where appropriate to improve the appearance and alignment of the front teeth, while may refine the shape of the biting edges as part of a wider treatment plan.
Professional evaluation determines the most appropriate care for each individual. Treatment depends on clinical findings and the specific factors contributing to the overjet.
Temporary Measures Before Assessment
If you are experiencing discomfort or concerns related to an overjet, the following general measures may help while professional assessment is arranged. These do not replace professional dental care.
Recommended
Avoid biting into very hard foods with protruding front teeth, as this may reduce the risk of chipping or fracture.
Maintain regular oral hygiene, including thorough brushing and cleaning between teeth, to support overall dental health.
Be mindful of teeth grinding or jaw clenching habits, particularly during times of stress or during sleep.
Consider wearing a mouthguard during contact sports or physical activities that may pose a risk to the front teeth.
Arrange professional dental assessment if symptoms persist, worsen, or if you have concerns about your bite alignment.
Avoid
Do not attempt to adjust your bite or tooth position yourself — bite alignment requires professional assessment and management.
Avoid habitually biting on hard objects such as pens, ice, or fingernails, as protruding teeth may be more vulnerable to damage.
Do not ignore persistent jaw discomfort or increasing tooth wear — these may benefit from professional evaluation.
Avoid using over-the-counter dental appliances or alignment devices without professional guidance, as poorly fitting devices may cause harm.
Do not delay seeking assessment if you experience a dental injury involving the front teeth.
These measures are general guidance only and do not replace professional dental care. If you are concerned about your bite alignment or protruding front teeth, please contact us to arrange an assessment.
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Overjet Assessment
If you are concerned about protruding front teeth or bite alignment, a professional dental assessment can help evaluate whether an overjet may be affecting your oral health and determine appropriate care options.
Professional Overjet Assessment
Whether you have noticed protruding front teeth, are experiencing bite discomfort, or are concerned about tooth wear, our South Kensington team can assess your situation and discuss the most appropriate care.
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