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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. Daniel Ma 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 Vancouver, BC orthodontic office, Dr. Daniel Ma 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!

It’s a new year, and it couldn’t come fast enough for many of us! Let’s do our part to make this a better year in every way—and you can start by making this the year you quit smoking once and for all.

You know that smoking is very damaging to your body. Smokers are more likely to suffer from lung disease, heart attacks, and strokes. You’re at greater risk for cancer, high blood pressure, blood clots, and blood vessel disorders. With far-reaching consequences like this, it’s no surprise that your oral health suffers when you smoke as well.

How does smoking affect your teeth and mouth?

• Appearance

While this is possibly the least harmful side effect of smoking, it’s a very visible one. Tar and nicotine start staining teeth right away. After months and years of smoking, your teeth can take on an unappealing dark yellow, orange, or brown color. Tobacco staining might require professional whitening treatments because it penetrates the enamel over time.

• Plaque and Tartar

Bacterial plaque and tartar cause cavities and gum disease, and smokers suffer from plaque and tartar buildup more than non-smokers. Tartar, hardened plaque which can only be removed by a dental professional, is especially hard on delicate gum tissue.

• Bad Breath

The chemicals in cigarettes linger on the surfaces of your mouth causing an unpleasant odor, but that’s not the only source of smoker’s breath. Smoking also dries out the mouth, and, without the normal flow of saliva to wash away food particles and bacteria, bad breath results. Another common cause of bad breath? Gum disease—which is also found more frequently among smokers.

• Gum Disease

Smoking has been linked to greater numbers of harmful oral bacteria in the mouth and a greater risk of gingivitis (early gum disease). Periodontitis, or severe gum disease, is much more common among smokers, and can lead to bone and tooth loss. Unsurprisingly, tooth loss is also more common among smokers.  

• Implant Failure

Tooth implants look and function like our original teeth, and are one of the best solutions for tooth loss. While implant failure isn’t common, it does occur significantly more often among smokers. Studies suggest that there are multiple factors at work, which may include a smoker’s bone quality and density, gum tissue affected by constricted blood vessels, and compromised healing.

• Healing Ability

Smoking has been linked to weakened immune systems, so it’s harder to fight off an infection and to heal after injury. Because smoking affects the immune system’s response to inflammation and infection, smokers suffering from gum disease don’t respond as well to treatment. Smokers experience a higher rate of root infections, and smoking also slows the healing process after oral surgeries or trauma.

• Dry Socket

Smoking following a tooth extraction can cause a painful condition called “dry socket.” After extraction, a clot forms to protect the tooth socket. Just as this clot can be dislodged by sucking through a straw or spitting, it can also be dislodged by the force of inhaling and exhaling while smoking.

• Oral Cancer

Research has shown again and again that smoking is the single most serious risk factor for oral cancer. Studies have also shown that you reduce your risk of oral cancer significantly when you quit smoking.

• Consequences for Orthodontic Treatment

Finally, if this is the year that you’re investing the time and effort needed to create an attractive, healthy smile with orthodontic treatment, don’t sabotage yourself by smoking!

Cosmetically, smoking doesn’t just discolor your tooth enamel—tar and nicotine discolor your aligners and braces as well. If one of the reasons you chose clear aligners or ceramic brackets is for their invisible appearance, the last thing you want is yellow aligners and brackets.

More important, smoking, it’s been suggested, can interfere with your orthodontic progress. When blood vessels are constricted, your gums, periodontal ligaments, and bones can’t function at their healthy best, moving your teeth where they need to be steadily and efficiently. This means that your treatment could take longer. And if your smoking has caused gum disease, you might have to put any orthodontic treatment on hold completely until it’s under control.

Quitting smoking is a major accomplishment that will improve your life on every level. It’s always a good idea to talk to Dr. Daniel Ma for strategies to help you achieve your wellness goals for the new year. Make this the year you stop smoking, and the year your health improves in countless ways because you did.

You may have noticed that kids seem to be getting braces and other orthodontic care a lot earlier these days. There was a time, only a decade or two ago, when braces were mainly seen on teenagers, but that is beginning to change. If you’re wondering when to bring your child to our Vancouver, BC office for an orthodontic evaluation, the answer actually has several parts.

The Telltale Signs

If your child has a very crowded set of adult teeth coming in, or if the permanent front teeth came in very early, these are signs that your child should see Dr. Daniel Ma, regardless of age.

The Dental Age

Barring signs of trouble or early adult teeth as mentioned above, the time that your child needs to be seen for initial orthodontic evaluation depends not so much upon your child’s actual age, but on what is known as a “dental age.”

The dental age of the patient might be entirely different from his or her actual chronological age; for example, an eight-year-old could have a dental age of 13. It is part of Dr. Daniel Ma and our staff’s job to determine the dental age and then make appropriate recommendations for the resolution of orthodontic issues if they are emerging.

The Official Recommended Age

The Canadian Association of Orthodontists officially recommends that kids should see an orthodontist for the first time between the ages of seven and nine. Even if the child does not have all his or her permanent teeth, the teeth growth pattern can usually be predicted quite effectively by an orthodontist.

This allows for a proactive response to emerging problems, and this is the reason that some younger children are now getting orthodontic devices earlier in life. If a young child has serious orthodontic issues emerging, Dr. Daniel Ma can usually address the problems immediately and then follow up with another round of treatment when the child has all the adult teeth.

Even with the best of care, accidents can happen, and your retainer, unfortunately, is not immune. Of course, you need to visit our Vancouver, BC office ASAP if your retainer is damaged, but, in the meantime, there are some strategies you can use to help your teeth—and your retainer—stay as healthy as possible while you wait.

For Removable Retainers

• When you notice any damage to your removable retainer—remove it.

Don’t wear a damaged retainer, especially overnight. You don’t want to damage it further, and you do want to avoid the possibility of choking if a retainer breaks while you’re sleeping. Dr. Daniel Ma and our orthodontic team are experts when it comes to deciding if your retainer is wearable, so always consult an expert before putting a suspect retainer back in your mouth.

• Damaged Hawley retainer?

If you have a Hawley retainer—the traditional wire retainer—here’s some good news: a Hawley retainer can often be repaired if it’s not damaged too badly. Don’t try to fix your retainer yourself, and bring it into our office as soon as possible to see if it’s fixable.

• Damaged clear retainer?

If you have a clear retainer, let’s start with the bad news: A clear retainer is not a repairable retainer. Cracks, breaks, warping—these injuries mean that a new retainer is in your future.

The good news is that materials for plastic retainers are available that are more durable than ever. This might be a good option for you to check out, especially if you suffer from bruxism, or tooth grinding, which can be very hard on clear retainers.

• When you’ve just finished treatment with clear aligners . . .

It’s worth asking if your last tray can sub for your retainer until you have it repaired or replaced.

• Ask us about over-the-counter mouthguards.

While you wait for a retainer repair/replacement, your teeth are at risk of shifting out of alignment. A customizable OTC mouthguard might reduce the chance of shifting, although it’s definitely not a long-term solution! We can let you know if this temporary fix is worth it.

For Fixed Retainers

If the wire retainer bonded to your teeth becomes loose, or if you notice your teeth shifting, you might need a repair or a replacement. This is a job for us. In the meantime,

• When you have a broken wire . . .

If a broken wire is causing discomfort, check to see if you should flatten it or cover the wire tip with dental wax to protect soft tissues. Warm water rinses can ease irritation.

• When your wire is broken or loose . . .

Stay away from chewy, sticky, and crunchy foods. You should be doing this anyway with a fixed retainer to keep it from becoming detached—and if it’s already loose, no need to make it more so!

• Ask us about over-the-counter mouthguards.

Check to see if an OTC, customizable mouthguard is a good idea to keep your teeth from shifting if you can’t visit our office right away.

We started off by saying that accidents can happen even with the best of care. So you can imagine what can happen without the best of care. Keep your retainer in its case, keep it away from heat, don’t eat foods that can harm your retainer—all the precautions that make accidents unlikely to happen.

But if something awful befalls your retainer, call our Vancouver, BC office right away. Why aren’t we suggesting ways to fix your broken retainer with the supplies you have in your home toolbox? Because the best life hack of all for someone with a damaged retainer is to leave the fixing to a dental professional.