My Blog

Posts for: May, 2018

By W. Robert Howarth, DDS, FASD, Family and Sports Dentistry
May 22, 2018
Category: Dental Procedures
Tags: orthodontics   retainers  
BondedRetainersProvideaLessNoticeableOptionforKeepingTeethStraight

If you're currently undergoing orthodontic treatment, you're no doubt looking forward to the day your braces come off. But that won't end your treatment just yet — you'll need to wear a retainer.

Teeth are held secure in the bone of the jaw by an elastic tissue known as the periodontal ligament. As the braces “pull” the teeth to their new position, the ligament stretches and the bone remodels around the teeth. But the ligament also has a tendency to rebound as the tension eases when the braces are removed. The teeth could then return to their original position, especially during the first few months.

To prevent this patients wear an orthodontic appliance known as a retainer. It maintains some of the tension once supplied by the braces to help keep or “retain” the teeth in their new position. Depending on your age and other factors, you'll have to wear one for at least eighteen months; some patients, especially adults, may have to wear one indefinitely.

You may be familiar with a removable retainer, one you can take in and out of your mouth. But there's another type called a bonded retainer that's fixed to the teeth and can only be removed by a dentist. With this retainer a dentist bonds a thin piece of wire to the back of the teeth where it can't be seen. You can feel it, though, with the tongue: an unusual sensation at first, but one easily grown accustomed to.

Unlike their removable counterparts, bonded retainers aren't noticeable, either to others or the wearer. They're especially appropriate for patients who may not be as diligent in wearing a removable retainer.

It does, though, have some disadvantages. The position of the wire running horizontally across several teeth can make flossing difficult. And as with any retainer, removing it could increase the risk of the teeth moving out of alignment.

There are a number of factors to discuss with your orthodontist about which type of retainer is best for your situation. If you do choose a bonded retainer, be sure you work with the dental hygienist on how best to floss the affected teeth. And if you do have it removed, have a removable retainer prepared so you can preserve that smile you've invested so much into obtaining.

If you would like more information on bonded retainers following braces, please contact us or schedule an appointment for a consultation.


By W. Robert Howarth, DDS, FASD, Family and Sports Dentistry
May 12, 2018
Category: Dental Procedures
Tags: porcelain veneers  
NewMaterialsAddStrengthtoVeneersBeautifulLife-Likeness

With exciting innovations in cosmetic dentistry over the last few decades, we can now transform nearly any unattractive smile. One of the best and most cost-effective of these is the porcelain veneer. These thin layers of dental porcelain are bonded over the front of chipped, slightly misaligned or stained teeth to create an entirely new look.

Veneers have evolved over time, especially with the materials they contain that give them their beauty and life-likeness. The first veneers were made mainly of feldspathic porcelain, a mineral composition known for its similarity in color and translucence to natural teeth.

But because this early porcelain had a high amount of silica (in essence, glass), and because they were created through overlaying several thin layers that weren’t as strong as a single piece, they were prone to shattering. This made them problematic for teeth subject to heavy biting forces or patients with clenching or grinding habits.

The situation changed dramatically in the 1990s, when dental labs began adding Leucite, a sturdier glass-like mineral that didn’t diminish the porcelain’s translucence. Not only did Leucite make veneers more shatter-resistant, it also enabled dental technicians to fashion most of the veneer in one piece to further strengthen it.

More recent veneers may now incorporate an even stronger material called lithium disilicate. Because lithium disilicate has twice the strength of Leucite, veneers made with it can be as thin as 0.3 millimeters. Not only does this blend together the most desirable qualities expected of a veneer—strength, aesthetic appeal and easy fabrication—it allows for a broader range of situations and uses.

Both of these materials can be pressed or milled to assume the exact shape necessary to fit a particular tooth. The manufacturing process also allows for creating smaller veneers that can then be overlaid with porcelain for the most life-like appearance possible.

Thanks to these stronger materials enhancing the natural beauty of porcelain, we now have a wider creative palate for transforming your smile.  

If you would like more information on porcelain veneers, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “Porcelain Veneers: Your Smile—Better Than Ever.”


By W. Robert Howarth, DDS, FASD, Family and Sports Dentistry
May 02, 2018
Category: Oral Health
Tags: pediatric dentistry   x-ray  
YourChildIsntinDangerfromX-RaysThankstotheALARAPrinciple

Your child’s dental care wouldn’t be the same without x-ray imaging. It’s one of our best tools for finding and treating tooth decay.

But since x-rays emit radiation, is your child in any danger when they’re exposed?

X-rays, an invisible form of electromagnetic energy, will form images on exposed film after passing through the body. Because it takes longer for x-rays to pass through dense tissue like teeth and bones, the corresponding areas appear lighter on the film than less dense tissue like the gums. We can detect decay because the diseased tooth structure is less dense and thus appears darker against healthier tooth structure.

The downside of x-rays, though, is the radiation they emit could potentially alter cell structure and increase the risk of future cancer, especially with children. That’s why we follow a principle known as ALARA when using x-ray imaging. ALARA is an acronym for “as low as reasonably achievable,” meaning the doses for an x-ray session will be as low as possible while still gaining the most benefit.

Advances in technology, particularly the development of digital processing, has helped reduce the amount of radiation exposure. We’re also careful with what types of x-rays we use. The most common type is the bitewing, a device with the film attached to a long piece of plastic that the child holds in their mouth while biting down.

Depending on the number of our patient’s teeth, we can usually get a comprehensive view with two to four bitewings.  A typical bitewing session exposes them to less radiation than what they’re receiving from natural environmental background sources each day.

Keeping the exposure as low and as less frequent as possible greatly reduces health risks while still getting the full benefit of early decay detection. Still, if you have concerns about your child’s x-ray exposure, we’ll be happy to discuss our approach and all the precautions we take using x-ray imaging.

If you would like more information on x-ray diagnostics and your child, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “X-Ray Safety for Children.”