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Posts for: June, 2015

ItsanArtDeterminingToothColorinCompositeResinRestorations

It takes a lot of skill, experience, talent and artistry to create tooth restorations that look so natural that no one can tell them apart from the originals. To do so requires understanding of the normal anatomy of a tooth as well as of the interactions of light and color.

How the anatomy of a tooth determines color

The color that we perceive when looking at a tooth results from the combined appearance of the tooth’s center core (dentin layer) and its covering enamel. Going from the outside in, the enamel is made of tightly packed crystals of calcium, which cause it to be one of the hardest substances naturally produced by animals. The crystals are also responsible for a tooth’s brilliance and translucence. The dentin is more like bone, a porous living tissue composed of microscopic tubes, interspersed with more calcium crystals. In the very center of the tooth is a central chamber containing the pulp and nerves.

Each of these layers has its own physical and optical properties. Since the enamel is translucent and the dentin is more opaque, most of the tooth’s color comes from the dentin and is transmitted through the enamel layer. Factors that affect this transmission include the thickness and age of the enamel as well as external tooth whitening.

If the enamel is more translucent, more of the color of the dentin shows through. If it is more opaque, the enamel absorbs and reflects light so that less color is visible and the enamel looks brighter.

The language of color composition and reflected light

Color means the whole spectrum in the rainbow. The spectrum is made up of the three primary colors — red, blue, and green. When all are combined, they create white light.

Hue refers to the brightest forms of the colors. The color we perceive depends on the dominant wavelength of light that is reflected by an object.

Value refers to a color’s lightness or darkness. A brighter color has a higher value.

Chroma is the amount of identifiable hue in a color. An achromatic color (without hue) appears gray.

Saturation is a measure of a color’s intensity.

This terminology of color is used not only by dentists and dental technicians, but also by a wide range of artists. It implies expertise and understanding of how colors work, how they vary and change and affect one another.

Contact us today to schedule an appointment or to discuss your questions about bonding to repair chipped teeth. You can also learn more by reading the Dear Doctor article, “Artistic Repair of Front Teeth with Composite Resin.”


By Phil Hart, DDS
June 17, 2015
Category: Oral Health
SofiaVergaraObsessedWithOralHygiene

A woman as gorgeous and funny as Sofia Vergara surely planned to be a model and actress from the get-go, right? Wrong! Sofia’s first career choice actually was to be… a dentist! That’s right, the sexy star of TV’s Modern Family actually was only two semesters shy of finishing a dental degree in her native Columbia when she traded dental school for the small screen. Still, dental health remains a top priority for the actress and her son, Manolo.

“I’m obsessed,” she recently told People magazine. “My son thinks I’m crazy because I make him do a cleaning every three months. I try to bribe the dentist to make him to do it sooner!”

That’s what we call a healthy obsession (teeth-cleaning, not bribery). And while coming in for a professional cleaning every three months may not be necessary for everyone, some people — especially those who are particularly susceptible to gum disease — may benefit from professional cleanings on a three-month schedule. In fact, there is no one-size-fits-all approach to having professional teeth cleanings — but everyone needs this beneficial procedure on a regular basis.

Even if you are meticulous about your daily oral hygiene routine at home, there are plenty of reasons for regular checkups. They include:

  • Dental exam. Oral health problems such as tooth decay and gum disease are much easier — and less expensive — to treat in the earliest stages. You may not have symptoms of either disease early on, but we can spot the warning signs and take appropriate preventive or restorative measures.
  • Oral cancer screening. Oral cancer is not just a concern of the middle aged and elderly — young adults can be affected as well (even those who do not smoke). The survival rate for this deadly disease goes up tremendously if it is detected quickly, and an oral cancer screening is part of every routine dental visit.
  • Professional teeth cleaning. Calcified (hardened) dental plaque (tartar or calculus) can build up near the gum line over time — even if you brush and floss every day. These deposits can irritate your gums and create favorable conditions for tooth decay. You can’t remove tartar by flossing or brushing, but we can clear it away — and leave you with a bright, fresh-feeling smile!

So take a tip from Sofia Vergara, and don’t skimp on professional cleanings and checkups. If you want to know how often you should come in for routine dental checkups, please contact us or schedule an appointment for a consultation. You can learn more in the Dear Doctor articles “Dental Hygiene Visit” and “Dental Cleanings Using Ultrasonic Scalers.”


By Phil Hart, DDS
June 09, 2015
Category: Dental Procedures
MovingJustaFewTeethcanhaveBigResults

Orthodontists are able to achieve attractive results with traditional braces moving several teeth into a better position. In a way, braces are the original “smile makeover.”

But orthodontic treatment can also be useful if only a few teeth (like the two upper front teeth) need to be moved slightly. A treatment known as minor tooth movement takes only a few months as opposed to years for traditional multiple teeth movement, and with removable appliances that may use small springs or elastics to place gentle pressure on teeth to move them.

So, what constitutes a minor tooth movement scenario? As with any dental condition, the first step is a complete dental examination, particularly the bite. We also need to determine if enough room exists to close any space without compromising the bite with the opposing teeth, and if the teeth and their roots are in a good position to allow minor movement — otherwise, more extensive treatment may be called for. The surrounding gum tissues and bone also need to be healthy and disease-free, especially in adults.

We may also need to look more closely at the actual cause for a front tooth gap. If the gap is the result of the tongue habitually pressing against the back of the teeth and pushing them forward, it may then be difficult or impossible to close the gap with minor tooth movement techniques. The cause may also originate from the frenum (a thin, muscular tissue that rises up from between the upper front teeth toward the lip) if it has extended too far between the teeth. In this case we may first need to surgically remove some of the frenum tissue before attempting orthodontics or the teeth may gradually move back apart after closing the gap.

Although minor tooth movement normally doesn’t take as long as braces, it may still require several months. And just like with braces, you will need to wear a retainer for several months afterward until the bone stabilizes around the new position. Still, minor tooth movement could have a major impact on your smile.

If you would like more information on orthodontic treatments, 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 “Minor Tooth Movement.”


By Phil Hart, DDS
June 02, 2015
Category: Uncategorized
Tags: teeth whitening  
TeethWhiteningKnowYourOptions

There are many reasons why teeth may need a whitening treatment to achieve an appealing brightness: what we eat and drink, natural aging, genetics, and the lack of dedication to oral hygiene can all play a role in how we look.

For vital (living) teeth, there are basically three different options for teeth whitening, and we’d be happy to help you decide which is right for you:

  • In-office tooth whitening: The fastest way to get your smile radiant. A high concentration of a peroxide gel solution is applied directly to the tooth surface. Gums and other soft tissues are completely protected for your safety. This technique is excellent for whitening deep surface stains as well as general tooth whitening. This professional treatment requires the least amount of time to achieve the desired whiteness.
  • The professional take-home option: Custom-made bleaching trays are prepared by our office. This technique is convenient and less expensive, but the desired whiteness will take longer to achieve than the in-office option.
  • Over-the-counter products: These offer the least expensive option but use weaker whitening agents. For example, whitening strips, like the ones advertised on television, are popular and easy to use but will generally take the most time to achieve the desired success. Also, even agents that are not the strongest available may cause damage to teeth if used inappropriately and without professional supervision.

While there are normally no serious side effects after professional whitening treatments, there is a potential risk of tooth sensitivity and gum irritation. If either one or both of these occur, it should disappear within a few days.

It should come as no surprise that bleaching is not permanent. The whiteness will fade eventually depending on your diet, habits, hygiene, etc., but it usually will last at least six months — more often up to two years. Obviously, if you avoid drinking coffee, tea, or red wine, don’t smoke, and have a diligent oral hygiene routine your results may last longer.

Advertisements for teeth-whitening products are everywhere. If you have any questions about what you see, or simply want to do a reality check on their claims, please contact us or schedule an appointment for a consultation. You can learn more about this topic by reading the Dear Doctor magazine articles “Teeth Whitening: Brighter, Lighter, Whiter...,” and “Important Teeth Whitening Questions Answered.”