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.”
If you think “vaping” electronic cigarettes (e-cigarettes for short) is healthier for your teeth and gums than smoking cigarettes, you might be disappointed with the latest research. A number of studies seem to indicate e-cigarettes could be just as damaging to your mouth as traditional cigarettes.
An e-cigarette is a device containing a chamber for liquids and a means to heat the liquid into a vapor. The user then inhales or “vapes” the vapor, which contains nicotine and flavorings. The heat also pressurizes the vapor causing it to expel as an aerosol into the mouth.
Researchers have found the ingredients and aerosol effect could lead to potential health problems. An Ohio State University researcher found that vaping disrupted the normal balance of microorganisms in the mouth known as the oral microbiome. This imbalance could make it easier for disease-causing bacteria to proliferate, particularly those most responsible for periodontal (gum) disease.
Another study coming out of the University of Rochester and Stony Brook University in New York detected cell damage in gum tissue caused by e-cigarette vapor similar to that caused by regular cigarette smoke. Some of this damage seemed to result from the flavoring agents used in the e-cigarette liquid, as well as nicotine.
Another study from Quebec, Canada appears to concur with the New York study. These researchers found the damage caused by e-cigarette vapor might substantially increase the rate of cell death in oral tissues by as much as 50% over a short period of time. This kind of damage can lead to higher risks of dental diseases like gum disease or tooth decay.
While we don’t know the long-term effect of using e-cigarettes on both oral and general health, these studies are alarming: They seem to show vaping may cause some of the same problems as smoking. With the jury still out, the prudent thing to do is limit or avoid vaping altogether to protect your mouth from these unhealthy outcomes.
Sometimes, looking at old pictures can really bring memories back to life. Just ask Stefani Germanotta—the pop diva better known as Lady Gaga. In one scene from the recent documentary Five Foot Two, as family members sort through headshots from her teen years, her father proclaims: "Here, this proves she had braces!"
"If I had kept that gap, then I would have even more problems with Madonna," Lady Gaga replies, referencing an ongoing feud between the two musical celebrities.
The photos of Gaga's teenage smile reveal that the singer of hits like "Born This Way" once had a noticeable gap (which dentists call a diastema) between her front teeth. This condition is common in children, but often becomes less conspicuous with age. It isn't necessarily a problem: Lots of well-known people have extra space in their smiles, including ex-football player and TV host Michael Strahan, actress Anna Paquin…and fellow pop superstar Madonna. It hasn't hurt any of their careers.
Yet others would prefer a smile without the gap. Fortunately, diastema in children is generally not difficult to fix. One of the easiest ways to do so is with traditional braces or clear aligners. These orthodontic appliances, usually worn for a period of months, can actually move the teeth into positions that look more pleasing in the smile and function better in the bite. For many people, orthodontic treatment is a part of their emergence from adolescence into adulthood.
Braces and aligners, along with other specialized orthodontic appliances, can also remedy many bite problems besides diastema. They can correct misaligned teeth and spacing irregularities, fix overbites and underbites, and take care of numerous other types of malocclusions (bite problems).
The American Association of Orthodontists recommends that kids get screened for orthodontic problems at age 7. Even if an issue is found, most won't get treatment at this age—but in some instances, it's possible that early intervention can save a great deal of time, money and effort later. For example, while the jaw is still developing, its growth can be guided with special appliances that can make future orthodontic treatment go quicker and easier.
Yet orthodontics isn't just for children—adults can wear braces too! As long as teeth and gums are healthy, there's no upper age limit on orthodontic treatment. Instead of traditional silver braces, many adults choose tooth-colored braces or clear aligners to complement their more professional appearance.
So if your child is at the age where screening is recommended—or if you're unhappy with your own smile—ask us whether orthodontics could help. But if you get into a rivalry with Madonna…you're on your own.
If you have questions about orthodontic treatment, please contact our office or schedule a consultation. You can read more in the Dear Doctor magazine articles “The Magic of Orthodontics” and “Orthodontics For The Older Adult.”
August is National Wellness Month. Since part of staying in good overall health is taking care of your dental health, it's a good time to look at ways you can improve and maintain your oral health. Here are some tips:
Practice good oral hygiene. A fundamental key to a long life of healthy teeth and gums is keeping them clean of dental plaque. This thin biofilm of bacteria and food particles is the number one cause of tooth decay and periodontal (gum) disease. Brushing twice and flossing once each day gets rid of that unpleasant grittiness and reduces your risk of disease.
See your dentist regularly. A good daily oral hygiene habit works best at controlling soft plaque. But any that you miss—a possibility even with great brushing and flossing skill—can harden into calculus (tartar). To remove it, you'll need professional cleaning by a dental professional. The American Dental Association recommends a comprehensive dental cleaning at least twice a year to fully minimize your disease risk.
Eat a low-sugar, dental-friendly diet. Oral bacteria love to feast on the leftovers from your eating, especially sugar. So, cutting back on foods with added sugar isn't just good for other aspects of your health, it can also help "starve out" bacteria and reduce their population in your mouth. You can also boost oral health by eating foods rich in minerals like calcium to maintain strong bones and teeth, and antioxidants that guard against oral cancer.
See your dentist at the first sign of problems. While hygiene, dental care and a nutritious diet can greatly reduce your risk of disease, it won't eliminate it completely. So see your dentist promptly if you notice red, swollen or bleeding gums, mouth pain or unusual spots on your teeth. The sooner you're diagnosed and treated, the less damage from dental disease and future treatment expense you'll endure.
Manage other inflammatory conditions. If you're dealing with a condition like heart disease, diabetes or arthritis, it could increase your risk of gum disease or make any occurrence of it worse. That's because gum disease and many systemic conditions share chronic inflammation as a common link. If an inflammatory condition is not managed through proper treatment, it could worsen any gum disease symptoms you have.
Pursuing wellness is a worthy goal—just be sure you include your oral health in the mix. A healthy mouth is a key ingredient for a healthy life. If you would like more information about gaining and maintaining optimum oral health, please contact us or schedule an appointment for a consultation. To learn more, read the Dear Doctor magazine articles “Daily Oral Hygiene” and “Good Oral Health Leads to Better Health Overall.”
Yes, you brush your teeth every day. But how much do you really know about this important habit? Test your knowledge with our quiz on dental vocabulary.
Choose the correct meaning for:
- Oral Hygiene
- Clean language
- The practice of keeping your teeth and gums clean
- A shade of lipstick
- A type of dental surgery
- A movie about a person’s life, such as “Ray Charles”
- A new kind of cling wrap
- An accumulation of bacteria that forms a whitish, sticky film
- A tooth whitener
- Dental plaque
- A type of instrument used to clean teeth
- Bacteria that accumulate on teeth and gums
- An award given at the Dental Oscar ceremony
- Your dentist’s framed diploma
- The body’s response to harmful bacteria
- A condition in which your gums become red and swollen and bleed easily
- A cause of gingivitis
- All of the above
- Periodontal disease
- Any disease caused by bacteria
- Tooth decay
- Whitish sores on the lips
- Gum disease caused by dental plaque
- Simple dyes that can stain plaque and make it visible
- Television reality shows
- Dental x-rays
- A section of your annual tax report
- Any infection in the oral area
- Tooth decay
- Inflammation of the gums that can lead to periodontal disease
- All of the above
- Dental caries
- Gum disease
- A task carried out during your teeth cleaning
- A technique of orthodontia
- Tooth decay
- A mineral that has been found to prevent tooth decay
- The location of a famous dental school
- A gasoline additive
- A type of house paint
- Inter-dental Area
- Referring to the area between your teeth
- The area regular proper flossing will keep clean
- Area that wood points and specially designed brushes can be used to clean
- All of the above
Answers: 1. b, 2. c, 3. b, 4. d, 5. d, 6. a, 7. c, 8. d, 9. a, 10. d
How did you do on our quiz? The more you know about keeping your teeth and gums clean and healthy, the better you will look and feel. Contact us today to schedule an appointment or to discuss your questions about oral hygiene. You can also learn more by reading the Dear Doctor article, “Oral Hygiene Behavior.”
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