"Overbite" gets used loosely to describe front teeth that stick out, but in dentistry it means something more specific, and the distinction affects both the diagnosis and the treatment.
Overbite and Overjet Are Different
Overbite describes how far the upper front teeth cover the lower front teeth vertically when you bite together. A small amount of overlap is normal and desirable. A deep bite is when the upper teeth cover the lower ones excessively, sometimes completely.
Overjet describes how far the upper front teeth sit forward of the lower ones horizontally. This is what most people mean when they say their teeth stick out.
You can have one without the other, and the treatment differs.
Why They Develop
Both are largely determined by the relationship between the upper and lower jaws, which is strongly influenced by genetics. Other contributors include prolonged thumb sucking or dummy use in childhood, tongue posture, missing back teeth allowing the bite to collapse, and years of wear from grinding and clenching that gradually reduce tooth height.
When It Does Not Need Treating
This is worth saying plainly, because not every deep bite is a problem. Many people have a deeper than average overbite, no symptoms, no wear, healthy gums and a stable bite that has not changed in decades. Treating something stable, in a mouth with no signs of damage, is not automatically an improvement.
What matters is whether there is evidence of harm, or whether it bothers you.
When It Does Matter
Wear on the Front Teeth
A deep bite concentrates force on the front teeth. Over time the edges of the lower front teeth and the inner surfaces of the upper ones can wear, chip or flatten, particularly in combination with grinding.
Trauma to the Gums
In severe deep bites, the lower front teeth can bite into the gum behind the upper front teeth, or the upper teeth can press into the gum in front of the lower ones, causing recession and inflammation that no amount of cleaning will resolve.
Difficulty Cleaning
Crowded, overlapping front teeth are harder to clean, which can contribute to decay and the need for gum and periodontal treatment.
Jaw Discomfort
Some people with deep bites experience muscle tiredness or joint discomfort, although the relationship between bite and jaw joint symptoms is complex and not always straightforward.
Risk of Injury
A pronounced overjet increases the risk of damage to the upper front teeth in a fall or a sporting knock, which is one reason a mouthguard matters for children with prominent front teeth.
Appearance
A legitimate reason in its own right, provided the treatment is proportionate to the concern.
Treatment Options
Clear Aligners or Braces
Orthodontic treatment moves teeth into better positions and is the most direct way to address a bite relationship. Invisalign can address many mild to moderate cases, while more complex situations may need fixed braces or referral to an orthodontist. We will tell you which category your bite falls into rather than stretching a treatment beyond what it does well.
Restorative Treatment
Where teeth have already worn significantly, rebuilding their height with composite, dental crowns or porcelain veneers can restore function and appearance. This is more involved than it sounds, as it changes the bite, so careful planning and a protective splint afterwards are part of the picture.
A Protective Splint
Where the bite is stable and the main risk is wear from grinding, a night splint may be all that is needed to protect the teeth.
Surgery
In a small number of cases where the jaw relationship itself is the issue, orthodontics combined with jaw surgery is the definitive option. That is a specialist referral and a significant undertaking, discussed only when it is genuinely indicated.
Monitoring
A perfectly reasonable option where nothing is deteriorating. We record the bite, take photographs and compare over time, so if wear does begin, it is identified early.
The Order of Treatment
If both alignment and worn teeth are involved, the sequence matters. Straightening teeth first often reduces how much restorative work is needed afterwards, because teeth in better positions need less reshaping. Jumping straight to veneers on misaligned teeth usually means removing more healthy tooth structure than necessary.
What an Assessment Involves
At a check-up and clean we examine how your teeth meet, look for wear facets, check the gums behind the upper front teeth and in front of the lower ones, and assess your jaw joints and muscles. Photographs and digital scans let us compare over time. If treatment is worth considering, we explain what each option involves, including doing nothing for now.
What to Watch For Yourself
Between appointments, a few signs suggest a deep bite is starting to cause damage rather than simply existing.
Look at the edges of your lower front teeth in good light. If they are becoming flattened, chipped or translucent at the tips, wear is occurring. Check the gum behind your upper front teeth and in front of the lower ones for redness or indentations.
Notice whether your front teeth feel like they are hitting first when you close, whether they have become more sensitive, or whether your bite feels different from how you remember it. Changes over months rather than years are worth reporting.
Book an Assessment
If you are concerned about your bite, or you have noticed your front teeth wearing, we are happy to take a look. Call Precision Dental on (07) 3852 1160 or book online.
Prefer to watch? What Can Invisalign Help With? is a short video from our team.
