Overbite Teeth: Causes, Types and Treatment Options

If you have ever looked in the mirror and noticed that your upper front teeth seem to sit noticeably in front of or over your lower teeth, you may have wondered whether you have an overbite — and, if so, whether it matters. It is one of the most common questions patients raise in dental consultations, and understandably so. The term "overbite" is frequently used, yet it is often misunderstood, misapplied, or confused with related but distinct bite problems.

This article explains what an overbite is, what causes it, how it differs from other malocclusions, and what current orthodontic understanding suggests about correction — so that you can approach any future dental conversation with clarity and confidence.

An overbite refers specifically to the vertical overlap of the upper front teeth over the lower front teeth when the back teeth are closed together. In other words, it describes how far the upper incisors extend downward in relation to the lower incisors.

A degree of vertical overlap is entirely normal. In fact, a small overbite — typically measured at around 2 to 4 millimetres — is considered part of a healthy occlusion (the way the teeth meet). What matters clinically is whether the degree of overlap falls within a typical range or extends beyond it to a point where it affects function, dental health, or quality of life.

These two terms are frequently confused, even in everyday usage.

• Overbite = the vertical overlap of the upper teeth over the lower teeth

• Overjet = the horizontal distance between the upper front teeth and the lower front teeth (sometimes colloquially referred to as "buck teeth")

A person may have a significant overjet, a significant overbite, both, or neither. When someone describes their upper teeth as sticking out, they are often describing overjet rather than overbite. Understanding the distinction matters because the causes and treatment approaches can differ.

Overbites rarely have a single cause. Modern orthodontic assessment considers a combination of skeletal, dental, and behavioural factors.

The shape and size of the jaws are largely inherited. If a parent or grandparent had a pronounced overbite, there is a higher likelihood of a similar jaw relationship developing in their children. Skeletal factors — specifically the relative positions and proportions of the upper jaw (maxilla) and lower jaw (mandible) — play a significant role in determining bite alignment.

A skeletal overbite arises when the underlying jaw structure contributes to the vertical overlap, rather than the teeth alone. This type may require a different approach to correction than a purely dental overbite.

Even where jaw structure is broadly typical, the position and angulation of individual teeth can produce or worsen an overbite. Teeth that have drifted, are crowded, or have erupted at an unusual angle can affect how the bite closes.

Prolonged thumb sucking, dummy (pacifier) use beyond toddler age, and persistent tongue thrusting have been associated with changes in tooth and jaw development. These habits can influence the direction in which teeth erupt and may contribute to bite irregularities, including overbite. Current clinical guidance indicates that early cessation of these habits, where possible, may reduce their influence on developing dentition — though the extent of impact varies between individuals.

Losing back teeth without replacement can alter the way the bite functions, sometimes causing the front teeth to take on additional load and changing the overall bite relationship.

Not all overbites are the same. Dental professionals will typically assess the degree of overlap and consider whether it involves primarily dental or skeletal structures before determining whether and how to address it.

As noted above, a small vertical overlap is normal and is present in most people with healthy dentitions. This is not a dental problem and requires no treatment.

A mild overbite involves a slightly greater vertical overlap than average, but one that does not cause functional problems or significant aesthetic concern. Many people with a mild overbite are unaware of it. Monitoring may be appropriate, particularly in younger patients whose dentition is still developing.

A moderate overbite involves a more noticeable degree of overlap. In some cases, this may begin to have implications for function — for example, the lower front teeth making contact with the palate (roof of the mouth) behind the upper teeth. A dental professional may recommend orthodontic assessment at this stage.

What some patients describe as an "extreme overbite" or "complete overbite" is one in which the upper teeth significantly overlap the lower teeth — in some cases almost entirely covering them. A severe overbite may be associated with discomfort, wear on tooth surfaces, soft tissue damage to the palate, or jaw joint concerns. It is worth noting that severity is assessed clinically and in the context of the individual, not by appearance alone.

It is natural to wonder how to know if you have an overbite. Some signs that may suggest a more than typical vertical overlap include:

• Your upper front teeth appear to cover most or all of your lower front teeth when you close your mouth

• Your lower teeth contact the roof of your mouth rather than the backs of your upper teeth

• You experience jaw discomfort or clicking when chewing

• You notice uneven wear on certain teeth

However, it is important to note that self-assessment has significant limitations. The degree of overlap can be difficult to judge accurately in a mirror, and what feels or looks like a significant overbite may fall within a typical range — or vice versa. A qualified dental professional or orthodontist is best placed to assess bite alignment properly.

There is no reliable method to conclusively determine whether you have a clinically significant overbite without a professional examination.

Searches for "how to naturally fix an overbite" or "how to get rid of overbite without treatment" are common, and it is worth addressing them honestly.

There is no clinically supported evidence that exercises, posture adjustments, or home remedies can permanently correct a dental or skeletal overbite in adults. The teeth and jaw structures involved are fixed anatomical features that cannot be meaningfully repositioned without professional orthodontic or dental intervention.

In growing children, some degree of natural bite development occurs, and early interceptive guidance from a dental professional may support more favourable jaw growth. However, this is not the same as a "natural cure" — it involves professional assessment and, in many cases, supervised orthodontic appliances.

Attempting to self-treat a bite problem is not recommended and could, in some circumstances, cause harm.

The appropriate treatment for an overbite depends on its cause, severity, the patient's age, and a range of individual dental and skeletal factors. There is no universal solution, and any treatment plan should be developed following a thorough professional assessment.

Braces are one of the most established approaches to overbite correction, particularly for dental overbites and in younger patients whose jaw growth is still occurring. Braces work by applying consistent, controlled force to teeth over time, gradually repositioning them and adjusting the bite relationship.

Can braces fix an overbite? In many cases, yes — braces can significantly improve a dental overbite by repositioning the upper and lower teeth to achieve a more balanced bite. However, the degree of correction achievable with braces alone depends on whether the overbite has a skeletal or dental origin.

For mild to moderate dental overbites, fixed braces or clear aligner systems may be suitable options, assessed on a case-by-case basis. For more pronounced skeletal overbites, particularly in adults where jaw growth is complete, orthodontic treatment may be combined with other approaches.

Clear aligner systems such as Invisalign are increasingly used to address a range of bite concerns, including overbite. Modern orthodontic assessment considers clear aligners appropriate for selected overbite cases, particularly those of dental origin. Their suitability depends on the degree and type of overbite, among other factors.

In younger patients, functional appliances — removable or fixed devices designed to guide jaw development — may be recommended to influence the growth of the lower jaw and reduce a pronounced overbite. These are most effective during periods of active jaw growth, typically in childhood and early adolescence.

In cases where a severe skeletal overbite cannot be adequately addressed by orthodontic treatment alone — typically because the jaw relationship is significantly disproportionate — orthognathic (jaw) surgery may be discussed as part of a combined orthodontic and surgical plan. This is not a first-line approach and is considered only after thorough assessment.

If you are concerned about your bite, the most appropriate first step is to raise it at your next dental examination. Your dentist can assess whether any degree of overbite is present, whether it falls within a typical range, and whether a referral to an orthodontist is warranted.

Current UK orthodontic understanding suggests that earlier assessment — particularly in children — allows for more treatment options, including growth-modifying approaches that are not available once jaw development is complete. For adults, effective orthodontic correction remains possible for many types of overbite, though options may differ.

If you are in London and would like a professional assessment of your bite and alignment, the team at Wimpole Dental can provide an informed evaluation in a comfortable, professional environment.

• An overbite describes the vertical overlap of the upper front teeth over the lower front teeth — a small degree of overlap is entirely normal

• Overbites may be dental, skeletal, or a combination of both in origin

• Common contributing factors include genetics, jaw structure, and prolonged childhood habits

• Severity ranges from typical to mild, moderate, and severe — only a dental professional can determine which category applies to an individual

• Braces and clear aligners can address many dental overbites, while skeletal cases may require different or combined approaches

• There is no clinically supported evidence for permanent home or natural correction of an established overbite

• If you are concerned, a professional dental assessment is the appropriate starting point

This article is intended for general educational purposes and does not constitute personalised dental or medical advice. For guidance specific to your own oral health, please consult a qualified dental professional registered with the General Dental Council (GDC).