Posts for: May, 2015
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.”
What happens if you’re right in the middle of a song, in front of an arena full of fans… and you knock out a tooth with your microphone? If you’re Michael Buble, you don’t stop the show — you just keep right on singing.
The Canadian song stylist was recently performing at the Allphones Arena in Sydney, Australia, when an ill-timed encounter with the mike resulted in the loss of one of his teeth. But he didn’t let on to his dental dilemma, and finished the concert without a pause. The next day, Buble revealed the injury to his fans on his Instagram page, with a picture of himself in the dentist’s chair, and a note: “Don’t worry, I’m at the dentist getting fixed up for my final show tonight.”
Buble’s not the only singer who has had a close encounter with a mike: Country chanteuse Taylor Swift and pop star Demi Lovato, among others, have injured their teeth on stage. Fortunately, contemporary dentistry can take care of problems like this quickly and painlessly. So when you’ve got to get back before the public eye, what’s the best (and speediest) way to fix a chipped or broken tooth?
It depends on exactly what’s wrong. If it’s a small chip, cosmetic bonding might be the answer. Bonding uses special tooth-colored resins that mimic the natural shade and luster of your teeth. The whole procedure is done right here in the dental office, usually in just one visit. However, bonding isn’t as long-lasting as some other tooth-restoration methods, and it can’t fix large chips or breaks.
If a tooth’s roots are intact, a crown (or cap) can be used to replace the entire visible part. The damaged tooth is fitted for a custom-fabricated replacement, which is usually made in a dental laboratory and then attached at a subsequent visit (though it can sometimes be fabricated with high-tech machinery right in the office).
If the roots aren’t viable, you may have the option of a bridge or a dental implant. With a fixed bridge, the prosthetic tooth is supported by crowns that are placed on healthy teeth on either side of the gap. The bridge itself is a one-piece unit consisting of the replacement tooth plus the adjacent crowns.
In contrast, a high-tech dental implant is a replacement tooth that’s supported not by your other teeth, but by a screw-like post of titanium metal, which is inserted into the jaw in a minor surgical procedure. Dental implants have the highest success rate of any tooth-replacement method (over 95 percent); they help preserve the quality of bone on the jaw; and they don’t result in weakening the adjacent, healthy teeth — which makes implants the treatment of choice for many people.
So whether you’re crooning for ten thousand adoring fans or just singing in the shower, there's no reason to let a broken tooth stop the show: Talk to us about your tooth-restoration options! If you would like additional information, please contact us or schedule an appointment for a consultation. You can learn more by reading the Dear Doctor magazine articles “Repairing Chipped Teeth” and “Dental Implants vs. Bridgework.”