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Maybe you’ve known people with braces and aligners—maybe you’ve worn them yourself!—so if braces or aligners are in your teen’s future, you have some idea what to expect and when to expect it.

But quite often, orthodontic issues require more treatment than braces alone can provide. When misalignment affects not only the teeth but the jaw as well, treatment can be more effective when it begins earlier and makes use of a different kind of appliance—the “functional appliance.”

During the years your child’s bones are still rapidly growing and forming, around the ages of eight to 14, functional appliances can help guide tooth movement and encourage jaw growth and development. One of the most widely used of these devices is the Herbst® appliance.

What does the Herbst appliance do?

There are several types of malocclusions, or “bad bites” treated by Dr. Kathleen Chan and Dr. Ivy Chen. A common condition called a Class II malocclusion occurs when the upper jaw and teeth project too far forward over the lower jaw and teeth. Signs of a Class II malocclusion might include an overjet (protruding upper teeth), and/or a small or recessive lower jaw.

While correcting this malocclusion often enhances facial symmetry, which can be very important for a child’s confidence, correcting a Class II malocclusion also promotes jaw and dental health. Misaligned teeth are more difficult to clean, which can lead to decay and gum disease. Bite problems can cause persistent jaw pain and damage to the teeth. And, with an overjet, a child’s upper teeth are more at risk for injury.

The Herbst appliance was developed to treat this kind of malocclusion. It moves the lower jaw and teeth forward to create a balanced, healthy smile.

How does the Herbst appliance work?

The Herbst appliance is fixed in place with stainless steel bands or crowns that are secured to four teeth in the rear of the mouth, often the first molars on each side of the upper and lower jaws. The band or crown on each lower tooth is equipped with a small bar that extends toward the front of the mouth.

An arm on each side links the bands or crowns on the upper teeth to the front of the bar assemblies on the lower teeth. Each arm consists of a rod that fits smoothly into a tube. The telescoping action of the rod and tube allows the mouth to open and close normally. When the mouth is closed, the arms on both sides telescope shut, forming compact cylinders that hold the jaw forward.

While a child’s bones are still growing, the lower jaw’s new forward position can stimulate further bone growth and remodeling to maintain the jaw in that forward position. The Herbst appliance also has a restraining effect on the forward movement of the upper jaw. The result is a steady, noticeable improvement in the relationship between the upper teeth and jaw and the lower teeth and jaw.

Is the Herbst appliance hard to take care of?

The Herbst appliance is fairly low maintenance, but, like any orthodontic gear, it should be treated with care.

• It’s important to watch your child’s diet, because sticky, crunchy, and chewy foods can damage the appliance. Save the caramels for a post-treatment celebration!
• Carefully cleaning around the appliance is necessary, because a buildup of bacteria and plaque leads to consequences like bad breath, gum disease, and tooth decay. A water flosser can make reaching and cleaning tight spots easier if a brush alone isn’t effective.
• If the Herbst appliance is damaged, some minor fixes might be doable at home with instructions from your treatment team. But if a band or crown comes loose, or if there’s a problem you’re unfamiliar with, call our Andover office right away.
• To help avoid the need for minor (or major) fixes, playing with the appliance with fingers or tongue, nibbling on pens and pencils, chewing on ice, or any other risky habits should be strictly off limits.

When it comes to your child’s health, you always have high expectations. Dr. Kathleen Chan and Dr. Ivy Chen and our team have all the answers you’ll need about what to expect from this phase of your child’s orthodontic treatment, and just why the Herbst appliance is the very best option to create a future of attractive, healthy smiles.

When you get braces as a child, you usually present the orthodontist with a blank canvas—newly erupted, perfect permanent teeth, just waiting to be aligned. But if you are a bit older, your canvas might already be a bit busy, with fillings, crowns, perhaps even a missing tooth. Can Dr. Kathleen Chan and Dr. Ivy Chen still work with that more complicated picture? Yes!

• Fillings

Many of us have acquired a filling or two. Normally, an old filling shouldn’t interfere with new braces. Large fillings, however, might call for spacers. These small rubber bands are inserted between two teeth as needed to create enough room for bands and brackets, and are generally put in place a week or two before you get your braces. They frequently fall out on their own as the space between the teeth gets a bit wider.

• Crowns

If you have had a root canal or any other dental treatment that left you with a crowned tooth, no need to be concerned. A special dental adhesive can be used to adhere brackets to crowns.

• Implants

If you have or would like to get an implant, this is a time to coordinate with your orthodontist and dentist or oral surgeon. Sometimes an implant can anchor your appliance, and sometimes it’s best to keep the spot open until your orthodontic work is completed. Once in place, an implant will not have the mobility of a tooth, so it’s always best to make sure your doctors can create a schedule that will work for both the installation of the implant and the positioning of your braces.

• Healthy Teeth and Gums

Before you begin orthodontic work, talk to your dentist. If you need a filling or crown, are considering a dental implant, have symptoms of gum disease, or are looking at any other dental concerns, you should work with your dentist first. Healthy teeth and gums are the very best foundation for orthodontic treatment at any age.

If you are wondering whether Dr. Kathleen Chan and Dr. Ivy Chen can help you achieve the smile you’ve always wanted, talk to us when you visit our Andover office! Your past dental work will be just one of the many variables we take into consideration when we’re planning your future of picture-perfect smiles.

At Chan & Chen Orthodontics, we love to celebrate the holidays with vigor! Dr. Kathleen Chan and Dr. Ivy Chen would love to share some unique ways of celebrating Thanksgiving from beyond the Andover area to the national level!

When Americans sit down to dinner on the last Thursday of November, the day that Abraham Lincoln designated as the day on which Thanksgiving would be celebrated, they do so thinking that the first Thanksgiving feast was held at Plymouth in 1621. According to National Geographic, the Spanish explorer Francisco Vásquez Coronado and his men celebrated a feast of Thanksgiving in Texas in 1541, giving Texas the distinction of being the first place where Thanksgiving was celebrated.

Different Types of Celebrations

Native Americans had rituals around which they celebrated in hopes of ensuring a bountiful harvest. The Cherokees had a Green Corn Dance that they did for this very purpose. The Pilgrims (not to be confused with the Puritans,) rejected any type of public religious display. They held a three-day long non-religious Thanksgiving feast. Although they said grace, the focus of their celebration was on feasting, drinking alcohol (they did have beer,) and playing games.

The Pilgrims at the Plymouth Plantation celebrated a different day of Thanksgiving in 1623. Plagued by a crop-destroying drought, the settlers prayed for relief. They even fasted. A few days later, they got the rain they so desperately needed. Soon thereafter, they received another blessing when Captain Miles Standish came with staples they couldn't otherwise get. He also told them that a Dutch supply ship was en route. In gratitude for the abundance of good fortune, the Plymouth settlers celebrated a day of prayer and Thanksgiving on June 30, 1623.

The Story of Squanto

No discussion of Thanksgiving is complete without a discussion of Squanto, or Tisquantum, as he was known among his people, the Patuxet Indians. It is believed that he was born sometime around 1580. As he returned to his village after a long journey, he and several other Native Americans were kidnapped by Jamestown colonist, Thomas Hunt. Hunt put them on a ship heading to Spain where they were to be sold into slavery.

As fate would have it, some local friars rescued him and many of the other kidnapped natives. Squanto was educated by the friars. Eventually, after asking for freedom so he could return to North America, he ended up in London where he spent time working as a ship builder. By 1619, he was finally able to get passage on a ship headed to New England with other Pilgrims.

Upon arriving at Plymouth Rock, he learned that his entire tribe was wiped out by diseases that accompanied earlier settlers from Europe. In gratitude for passage on their ship, he helped them set up a settlement on the very land where his people once lived. They called the settlement Plymouth. Since they knew nothing about how to survive, let alone how to find food, Squanto taught them everything, from how to plant corn and other crops, how to fertilize them, how and where to get fish and eels and much more.

After a devastating winter during which many settlers died, thanks to Squanto's teaching, they had an abundant harvest. After that harvest, they honored him with a feast. It is this feast of 1621 which was celebrated between the Pilgrims and Wampanoag Indians that is widely considered the first Thanksgiving celebration.

About the Meal of the Plymouth Settlers

Surviving journals of Edward Winslow that are housed at Plymouth Plantation indicate that the first Thanksgiving feast was nothing like what Americans eat today. The meal consisted of venison, various types of wild fowl (including wild turkey,) and Indian corn. There were no cranberries, stuffing, pumpkin pie, potatoes, or any of the other “traditional” foods that appear on modern menus.

Today, Thanksgiving is celebrated on the fourth Thursday of November, the day that Abraham Lincoln designated as the holiday. It is still a day of feasting, and for some, a day of prayer and thanksgiving. For others, it is a celebration of gathering, especially for families. Still others may celebrate in entirely different ways, including watching college football bowl games, or by playing family games.

If you ever wonder why you're so tired after the Thanksgiving meal, it's because turkey contains an amino acid, tryptophan, and it sets off chemicals whose chain reaction combine to make people sleepy.

You’ve been told that you have a malocclusion called an “underbite.” Let’s look at just what this diagnosis means, and what it means for you.

Just what is an “underbite”?

A malocclusion is another way of saying that you have a problem with your bite, which is the way your jaws and teeth fit together when you bite down. In a typical bite, the front top teeth project slightly beyond, and slightly overlap, the bottom teeth.

An underbite, on the other hand, results when the lower teeth and jaw extend further forward than the upper teeth and jaw, causing the bottom teeth to overlap the top teeth.

What causes an underbite?

Underbites tend to be genetic, and run in families, so, most often, an underbite is something you’re born with. The size of your jaws, the shape of your teeth, or both will affect your bite.

A smaller number of underbites develop because of injuries or early oral habits, such as prolonged and vigorous thumb sucking or tongue thrusting.

How do we treat an underbite?

Your treatment will depend on the type and severity of your underbite, and your age when treatment occurs.

• Braces and Aligners

If your underbite is a slight one, caused, for example, by crowded or overly large teeth, braces or clear aligners can help move the teeth into proper alignment.

• Functional Appliances

If the underbite is caused by a problem with upper and lower jaw development, devices called functional appliances can be used to help guide the growth of the jawbones while a child’s bones are still growing and forming.

If you’re a young patient, two appliances commonly used to help correct an underbite are palatal expanders, which gradually widen the upper jaw if it’s too narrow, and reverse pull headgear, which fits both inside the mouth and outside on the face, and provides a steady, gentle pull to encourage the forward growth of the upper jaw.

• Surgical treatment

In some severe cases, surgical treatment can correct an underbite by reshaping the jawbone itself and positioning it further back to align properly with the upper jaw.

Why treat your underbite?

A serious underbite can cause damaged teeth and enamel, painful problems with the temporomandibular joint, headaches and facial pain, sleep apnea, difficulty chewing, eating, and speaking, and can affect confidence and self-esteem.

By following your treatment plan, you’ll not only prevent these consequences, but you’ll achieve major benefits—a healthy, comfortable bite, and an attractive, confident smile. Want to know more? Talk it over with Dr. Kathleen Chan and Dr. Ivy Chen at our Andover office for all the information you’ll need!