Our Blog

The words “overbite” and “overjet” certainly sound similar. Both conditions concern your front teeth. Both conditions fall under the same category of bite problems—Class II malocclusions, if you want to be technical. So it’s not surprising that they’re often used interchangeably. But while there are similarities, overbite and overjet are also distinctly different.

• Overbite/Overjet Geometry

In a healthy bite, the front top teeth project slightly beyond, and slightly overlap, the bottom teeth. The key word here is “slightly.” With a Class II malocclusion, the upper front teeth project further beyond the lower teeth than they should.

Of course, teeth and bites are as individual as we are, so there are variations in just how and just how much the overlap occurs. In diagnosing an overbite vs. an overjet, the difference comes down to a matter of vertical vs. horizontal.

An overbite, or deep bite, occurs when the top teeth vertically overlap the bottom teeth more than they should for a healthy bite. Generally, when a person’s top teeth cover more than a quarter of the bottom teeth when biting down, or more than two to three millimeters, that person is said to have an overbite.

An overjet, commonly known as protruding or buck teeth, is the result of a horizontal overlap that is broader than normal. This causes the top teeth to project outward toward the lips more than they do in a typical bite. An overjet is usually diagnosed when the horizontal distance between the top and bottom teeth exceeds two to three millimeters.

• Overbite/Overjet Causes

The causes for both an overbite and an overjet might be dental (caused by tooth alignment), or skeletal (caused by bone development), or a combination of both. These bite problems can run in families. They are also affected by the size and position of the jaws and the shape and position of the teeth.

Early oral habits, such as prolonged and vigorous thumb-sucking or pacifier use, can also contribute to the development of a Class II malocclusion, particularly an overjet. Consistent pressure from thump or pacifier pushes the teeth outward as they erupt, which encourages them to protrude. These oral habits can affect the shape of the palate and jaw, too.

• Overbite/Overjet Treatments

There are many types of treatment available to correct teeth and bite misalignments. Dr. Jason Jones will tailor your treatment to your specific malocclusion for the best orthodontic outcome.

If you have a mild malocclusion, and minor dental issues are the main cause of that malocclusion, either braces or clear aligners can be effective for an overjet or an overbite. Elastics (rubber bands) are often used as part of this treatment.

If the malocclusion is due to bite problems caused by uneven upper and lower jaw development, devices called functional appliances can be used with braces to help guide the growth of the jawbones while young patients’ bones are still forming. These include appliances that work inside the mouth to help the upper and lower jaws grow proportionally, and external appliances such as headgear.

In some cases, where the malocclusion is skeletal in nature as well as dental, surgical treatment might be necessary to reshape the jawbone itself. Orthodontic treatment is usually needed as well both before and after surgery.

• Overbite/Overjet Consequences

Over time, a deep overbite can cause damaged gum tissue, worn enamel, and fractured teeth. When teeth protrude because of an overjet, they can lead to self-consciousness and are more at risk for injury. Both malocclusions share dental and medical consequences, including concerns about facial and jaw appearance, problems speaking or chewing, headaches, and face and jaw pain.

Class II malocclusions aren’t all the same, and orthodontic patients aren’t all the same either. You may have a minor malocclusion or a significant one. You may have an overbite, or an overjet, or a combination of different bite and alignment concerns. Your malocclusion may not bother you at all, or it may cause pain, discomfort, or self-consciousness.

That’s why every overbite or overjet should be evaluated by an orthodontist. When you visit our Buffalo, Hamburg or Amherst orthodontic office, Dr. Jason Jones will be able to diagnose the exact nature of your malocclusion, the reason for it, and your best individualized treatment plan. An overbite and an overjet are different malocclusions, but you and your orthodontist want the same outcome for each: a healthy, attractive, and confident smile!

Maybe you’ve wanted braces since childhood. Maybe you had them, but your teeth have shifted over time. Maybe you’re tired of living with an uncomfortable bite. Good news! If you’re not happy with your adult smile, that doesn’t mean you’ve missed the opportunity to have the healthy, attractive smile you’ve always dreamed of.

While there are many benefits to having orthodontic work done as a child, there’s a lot to be said for orthodontic treatment as an adult. After all, you know exactly what you want. You’re dedicated to following your treatment plan. You have plenty of discreet orthodontic options available now, from clear aligners to lingual braces, to make your treatment as inconspicuous as possible.

But, on occasion, adult treatment does come with some adult baggage. Worried about your crowns, fillings, or veneers? If these restorations are part of your dental history, we can generally work with them. Dental implants? Those might fall into a slightly different category.

Implants are a great way to restore your smile because they function like your natural teeth. They are designed to look just like natural teeth, and they allow you to speak, chew, and bite with confidence. Implants even stimulate the jawbone when we chew just as natural teeth do, helping to prevent bone loss in the jaw as we age.

But there is one important difference between implants and natural teeth: implants are firmly anchored in the jaw, while your natural teeth can change position.

Why is this a concern? Because tooth movement is one of the basics of orthodontic treatment. Unlike implants, our teeth aren’t firmly anchored in our jaws. They are held in their sockets by a ligament which cushions them and connects the tooth to the bone.

When braces or aligners gently apply consistent pressure to the teeth, the ligaments and eventually the bones holding the teeth reshape themselves in response to this pressure, and then become stable again during the retainer phase of treatment.

Implants, on the other hand, are crowns attached to a metal cylinder or screw that is surgically implanted into the jawbone. After several months, osseointegration takes place—which is a technical way of saying that the metal base fuses with the bone. This means that there won’t be any movement taking place—good when you’re chewing, but not helpful for realignment!

If you haven’t yet replaced a missing tooth with an implant, it’s often best to wait before starting orthodontic work. We can design treatment around a missing tooth, leaving room to accommodate an implant in just the right spot when your orthodontic treatment is finished.

If you have an implant already, the placement of your implant will help determine your treatment:

• If your implant is already perfectly placed for your future alignment, braces or aligners can be designed to work with and around your implant.
• If the placement is almost ideal, you might find a very small degree of misalignment acceptable, and we can plan your treatment around your existing implant.
• If it’s not possible to work with your implant where it’s presently located, it is possible to remove an implant. You would then have the implant procedure redone after your orthodontic work is complete.

Talk to Dr. Jason Jones about your treatment possibilities. By analyzing your orthodontic goals and working with your dental history, we can let you know exactly what can be done for your teeth and bite—even if you have an implant.

True, there are many benefits to having orthodontic work done in your childhood, but there’s a lot to be said for orthodontic treatment as an adult. And the greatest benefit of all? You’ll finally have the healthy, self-confident smile you’ve always dreamed of. Talk to our Buffalo, Hamburg or Amherst team about making that smile a reality.

Now that you’re in orthodontic treatment, you’re probably spending more time taking care of your teeth than ever before. So, why did your dentist find a cavity at your last checkup? Let’s look at some of the potential culprits.

• Brushing More Doesn’t Always Mean Brushing Well

Even for adults with decades of experience, proper brushing technique is often overlooked. Brushing’s not as effective without covering all the tooth surfaces (inside, outside, and molar tops), holding the brush at a 45-degree angle, gently brushing the teeth with small strokes, brushing for at least two minutes, and flossing between the teeth at least once a day.

If you wear braces, you must also take care to reach all the spots between and around your wires and brackets. Which leads us to . . .

• Are You Using the Right Tools?

Even with perfect brushing form, your braces will be a challenge for a regular toothbrush and floss. The right tools make any job easier, and that includes cleaning your teeth while you’re wearing braces.

Specially designed brushes with bristles designed to work with your brackets, floss made to fit behind wires, tiny cone-shaped interproximal brushes that fit between your teeth and around your brackets—all these tools are made specifically to remove plaque and food particles from your teeth and your braces.

• Crunchy, Hard, and Sugary Aren’t the Only Problem Foods

You know sugary foods should be limited because sugars are the favorite food of cavity-causing bacteria. And hard and crunchy foods are off limits altogether because they can damage your braces. But what about treats which look soft and harmless? Well, looks can be deceiving!

Starches in soft, carb-rich foods like potato chips and white bread quickly break down into sugars. What’s more, they tend to stick around brackets and in between the teeth, giving those cavity-creating bacteria plenty of nourishment.

This isn’t to say that you must eliminate all sugars and carbs from your diet. But when you wear braces, be especially mindful about brushing or at least rinsing thoroughly whenever you have a snack.

• Biology

Some people are biologically more prone to cavities, even with attentive brushing and flossing, so you shouldn’t feel guilty if you don’t have a perfect checkup every time. Instead, be proactive. Ask Dr. Jason Jones for brushing and cleaning advice the next time you visit our Buffalo, Hamburg or Amherst office—and then follow it!

It’s not just spending more time taking care of your teeth—it’s using your valuable time the best way possible. It’s always time well-spent brushing properly, eating mindfully, and working with your orthodontist and your dentist to create a beautiful, healthy, cavity-free smile.

Whenever we bite down, we’re applying force with our jaw muscles. Functional appliances direct these forces to create healthier tooth and jaw alignment. They’re used to help correct bite problems and to encourage symmetrical jaw growth.

Functional appliances aren’t always necessary. Because every child’s teeth and bite are different, orthodontic treatment at our Buffalo, Hamburg or Amherst office is carefully tailored to your child’s individual needs.

• For the child with minor tooth misalignment, traditional braces or aligners might be all that’s needed.
• For the child with a minor malocclusion, or bite problem, an orthodontist might use elastics (rubber bands) to bring teeth into healthy alignment.
• For the child who has a more serious malocclusion, involving both tooth and jaw alignment, an orthodontist might recommend a functional appliance.

A severe Class II malocclusion can be caused when the upper jaw or teeth are positioned too far forward, and/or the lower jaw is too small or positioned too far back. Common Class II malocclusions include:

• Open bite—the front teeth don’t touch when the back teeth bite down, or the back teeth don’t touch when the front teeth close.
• Overbite—some overbite is normal. A deep overbite occurs when the upper teeth significantly overlap the lower teeth.
• Overjet—the upper front teeth protrude further horizontally than they should.

Today’s functional appliances come in a variety of designs to treat Class II malocclusions. They can be fixed or removable. They can be used with or without braces. Some are designed to expand the upper palate to make sure there’s room for all the permanent teeth. What they all do is advance the position of the lower teeth and jaw to create a healthier, more comfortable bite.

Fixed devices are attached to the teeth and meant to be used full-time. These include the Forsus™ device, the Herbst® appliance, and the MARA appliance.

• Forsus Device

This appliance works with braces. A spring coil rod is most often attached to bands on the first molars on the upper jaw. It’s then connected to the arch wire on the lower jaw. Just like elastics—but more effective!—these spring coil rods provide gentle forward pressure that encourages the lower jaw and teeth forward.  

• Herbst Appliance

The Herbst appliance also applies forward pressure to the lower jaw using telescoping rods connecting the upper and lower teeth. The rods expand as the mouth opens, and telescope together as it closes, positioning the lower jaw further forward while the upper jaw is held back. The Herbst can be worn alone or with braces, and can also be used to expand the upper palate.

• MARA Appliance

The MARA (Mandibular Anterior Repositioning Appliance) uses an adjustable “elbow” piece connecting bands on upper and lower molars to guide the lower jaw and teeth forward when the jaw closes.

Removable appliances such as Bionator and Twin Block appliances can also improve Class II malocclusions. They are meant to be worn for a specific number of hours each day, and can be taken out for sports or other activities as needed. Because it’s essential to get all the necessary hours in, removable appliances require commitment!

• Bionators

A bionator is made of wire and acrylic, and it looks a lot like a retainer. The wire fits around the upper front teeth. It’s attached to a smooth piece of acrylic that sits behind the upper teeth and is shaped to guide the lower jaw forward when biting down. The bionator can also be adjusted to expand the upper palate.

• Twin Block Appliance

The twin block appliance uses two separate pieces made of wire and smooth acrylic. Both pieces are modeled to fit precisely over the upper and lower arches. The acrylic “blocks” fit over the biting surfaces of the teeth, working together like a 3D puzzle. When your child bites down, the upper blocks slide into place behind the lower blocks, pushing the lower jaw and teeth forward. The top plate can also be adjusted to expand the upper palate if needed.

Because these appliances are best used while a child’s bones are still growing and developing, dentists and orthodontists recommend an orthodontic evaluation by age seven. Early treatment with a functional appliance can help correct serious bite problems before or together with braces. In some cases, functional appliances may reduce the need for headgear or surgery.

Todays’ orthodontic technology has made functional appliances more comfortable and efficient than ever before. Talk to Dr. Jason Jones to discover how an individualized treatment plan and a custom appliance can give your child a healthy bite and a lasting smile.