We'd like to take a moment to clarify why it is so important to wear the retainer(s) given to you after your orthodontic treatment. These devices, which literally “retain” your teeth in their new and improved positions, are not just for kids. Anyone who has recently had their teeth moved through orthodontics needs to wear them for the prescribed length of time. Here's why:

Though your teeth may now look perfectly aligned, research has shown that there is no “right” position for your teeth to be in that can assure they don't move again — no matter what age you are when treated for malocclusion (“mal” – bad; “occlusion” – bite). In fact, most people will see changes to their bite and tooth alignment as they get older, with or without orthodontic treatment.

For one thing, there is a natural tendency for bottom front teeth to undergo a gradual “uprighting” with age. This can cause them to crowd as they move toward the tongue. And it happens regardless of whether wisdom teeth are present.

In the case of teeth that have been straightened recently, a type of “memory” of their original position may cause them to drift back to it. This tendency gradually lessens, but it may be a problem for up to 18 months.

That's why it's crucial to follow our instructions for wearing retainers. Keep in mind that the plan we have given you is designed to achieve the best possible results in your individual case. Some people will need to wear retainers 24 hours per day, some just at night, and still others on an as-needed basis. You may have received a removable retainer or one that is secured to the back of your teeth. The important thing is to secure the results you've worked so hard to achieve.

If you have any questions about orthodontic retainers, please contact us, or schedule an appointment for an orthodontic consultation.

You can read more about this topic in the Dear Doctor magazine article “The Importance of Orthodontic Retainers.”

Scientists don't know much about sleep even though it has been extensively studied. We do know that several hours of deep, restful sleep per night are essential for a healthy life.

Many people remain tired and unrefreshed, even after a full night's sleep. About a third of them are affected by sleep related breathing disorders (SRBD). Dentists can play a significant role in helping patients overcome these disorders, which range from frequent snoring to severe Obstructive Sleep Apnea (OSA). If you think you may have such a disorder, read on.

Under normal conditions, your upper airway is open, allowing air to flow from your nose, through your throat, and into your lungs. If you suffer from SRBD, you experience frequent reductions in the flow of air to your lungs during sleep. You may not be aware of it, but sometimes your breathing may even stop for brief periods. These reductions happen when your tongue and other soft tissues in the back of your throat collapse backwards and block your upper airway or windpipe. You may briefly awaken as many as 50 times per night because of these breathing lapses. These brief awakenings, called micro-arousals, keep you from reaching the deep stages of sleep your body needs.

The resulting reduced oxygen flow to your heart and to your brain can cause serious damage. You will also be tired during the day and experience a lack of energy, even if you sleep for seven or eight hours per night. This constant drowsiness puts you at greater risk for accidents.

Because dentists generally see their patients at six-month or other regular intervals, we are in a good position to screen and refer patients with suspected SRBD to physicians for diagnosis and treatment. Dentists can also treat SRBD in a number of ways.

• One of these is Oral Appliance Therapy (OAT), in which a device that looks something like an orthodontic retainer holds your lower jaw in a forward position relative to your upper jaw, preventing your tongue and soft tissue from collapsing into your airway.
• Another consists of breathing equipment called Continuous Positive Airway Pressure (CPAP). The CPAP is a mask connected to a machine that pushes air into your lungs.
• Other treatments include oral surgery or orthodontia. The goal of these techniques is to increase the volume of air passing through your upper airway by pushing your tongue forward.

Medical insurance usually covers the cost of much of these treatments.

Contact us today to schedule an appointment to discuss your questions about sleep disorders and their treatments. You can also learn more by reading the Dear Doctor magazine article “Sleep Disorders and Dentistry.”

As the Boy Scouts say, it's best to be prepared. You may never have a traumatic injury to your teeth. But what if you do? Here are four questions and answers about such injuries and their treatment that may be helpful some day.

What are traumatic injuries?
We are talking about physical damage caused by a fall, an accident, or a blow to the face. The word trauma comes from the Greek root meaning “wound.”

A traumatic injury can also cause broken, cracked, or split teeth, or a fracture to the root of the tooth. A tooth may be dislodged from its proper position, pushed sideways, out of or deeper into its socket. It may even be completely knocked out of your mouth.

What should you do if your tooth is knocked out?
With proper treatment, the tooth can be restored to its original place. You must handle the tooth gently and seek professional help as soon as possible. Rinse the tooth in cold water if it is dirty, but do not use any cleaning agent. Avoid touching the root. While hurrying to your dentist, keep the tooth from drying out by keeping it in a container of milk or of your saliva, or by holding it in your mouth between gum and cheek. It is vital to keep the tooth's living tissues moist until it can be professionally assessed and replanted in its socket. If a tooth has been dislodged but not knocked out, it must be repositioned in its socket and may be stabilized with a splint.

Who can treat a tooth that is damaged by a traumatic injury?
A general dentist, an oral surgeon or an endodontist is trained to treat such injuries. An endodontist is trained to treat the root canal(s) inside a tooth. The word comes from “endo” the Greek word for “inside,” and “odont,” the word for “tooth.” After a tooth is replaced in its socket and stabilized, root canal treatment is often needed.

What is root canal treatment?
A tooth is composed mostly of dentin, a living tissue. The top part or crown is covered by hard mineralized enamel. The soft tissue inside the tooth, the pulp, contains blood vessels, nerves and connective tissues. It extends from the crown to the tip of the roots. Treatment of dental pulp injuries is called root canal or endodontic treatment and is usually needed to treat teeth that have been dislodged or fractured.

Contact us today to schedule an appointment to discuss your questions about injuries to teeth and related nerve damage. You can also learn more by reading the Dear Doctor magazine article “Trauma & Nerve Damage to Teeth.”

How much do you know about dental implants? Test yourself with this quiz.

1. Earliest recorded attempts at using dental implants were from
1. Medieval England
2. The ancient Mayans
3. U.S.A. in the 1950s
2. Dental implants are called endosseous. What does this mean?
1. They fuse with the bone
2. They are inside the mouth
3. They are not real teeth
3. What are most dental implants made of?
1. Aluminum
2. Titanium
3. Steel
4. What part of the tooth does an implant replace?
1. The implant is the root replacement
2. The implant is the root plus the crown
3. The implant is the crown
5. What is the success rate of dental implants?
1. 50 percent or less
2. 75 percent
3. 95 percent or more
6. What could cause an implant to fail?
1. Smoking or drug use
2. Poor bone quality and quantity at the implant site
3. Both of the above
7. What is a tooth's emergence profile?
1. The implant and crown's shape as it emerges from beneath the gum line
2. A measure of the urgency of the tooth replacement
3. A measure of the time it takes for you to be able to chew on the new implant
8. What are some of the factors that go into the aesthetics of designing the crown?
1. Choice of materials
2. Color matching
3. Both of the above

1. b. The concept of dental implants goes back to the Mayan civilization in 600 AD.
2. a. The word endosseous (from endo meaning within and osseo meaning bone) refers to the implant's ability to fuse with or integrate with the bone in which it is placed.
3. b. Most implants are made of a titanium alloy, a metallic substance that is not rejected by the body and is able to fuse with the bone.
4. a. The term “implant” refers to the root replacement, which is anchored in the gum and bone. A crown is put around the implant where it emerges from the gumline.
5. c. The majority of studies have shown long term success rates of over 95 percent.
6. c. Factors that could cause an implant to fail include general health concerns such as smoking and drug use, osteoporosis, or a compromised immune system; poor bone quality or quantity; and poor maintenance such as lack of proper brushing and flossing.
7. a. The emergence profile has a lot to do with the implant's natural appearance. It involves the way the crown, which attaches to the implant, seemingly emerges through the gum tissue like a natural tooth.
8. c. Choices such as materials, color, and position can be worked out in the design of a customized temporary crown, which acts as a template or blueprint for a final crown.

Contact us today to schedule an appointment to discuss your questions about dental implants. You can also learn more by reading the Dear Doctor magazine article “Matching Teeth & Implants.”

Studies have shown that as many as 75 out of every 100 people fear dental visits; and for 10 to 15 of them, the fear is so great that they never get treatment — leading to serious dental problems and worse. Untreated disease in your teeth and gums can negatively affect the health of your entire body.

How can you conquer your fears so you can get the treatment you need? The answer includes (a) working with us to overcome your fears and have a positive experience while undergoing dental treatment, and (b) using oral sedation or anti-anxiety medication to help you quell your fears and relax.

Overcoming Your Fears

People develop fear of the dentist when they have a bad dental experience themselves, or sometimes when they hear of a bad experience someone else has had. The more you are afraid, the more you feel the symptoms of fear, and the more you connect those symptoms with the experience. You need to stop this negative memory sequence and replace the feelings of fear and loss of control with memories of good experiences and feelings of being in control.

It helps to know that you are not alone in your fears and that you can do something positive about them. First, make an appointment to discuss your fears with us, your dental professionals. Start with small procedures that cause only mild anxiety, and give yourself adequate time to get over your fears.

Using Oral Sedation

You have already gradually reduced your fear through your discussions and previous appointments. When you are ready to go to the next step, consider using oral sedatives or “anxiolytics” (meaning that they dissolve anxiety) to help you feel relaxed and comfortable.

Oral sedation — so called because you take it by mouth — allows you to let your guard down and focus on feeling peaceful, yet you remain awake and in control. The medication is either placed under your tongue and dissolved there (sublingual) or swallowed whole. Since it is taken by mouth, it does not require an injection, so it is easily taken by people who are afraid of injections.

The oral sedative and anxiolytic medications dentists use have been subjected to rigorous research and testing and have a long safety record after decades of use.

By using this two-step process you can reduce your fears and begin to get the care you need. And we, your dental professionals, are able to work more efficiently because we can focus on the work at hand, knowing that you are comfortable and relaxed.

Contact us today to schedule an appointment to talk about any fears you may have. You can also learn more by reading the Dear Doctor magazine articles “Overcoming Dental Fear & Anxiety” and “Oral Sedation Dentistry.”