All crowns are designed to restore functionality to a damaged tooth. But crowns can differ from one another in their appearance, in the material they’re made from, and how they blend with other teeth.
A crown is a metal or porcelain artifice that’s bonded permanently over a decayed or damaged tooth. Every crown process begins with preparation of the tooth so the crown will fit over it. Afterward, we make an impression of the prepared tooth digitally or with an elastic material that most often is sent to a dental laboratory to create the new crown.
It’s at this point where crown composition and design can diverge. Most of the first known crowns were made of metal (usually gold or silver), which is still a component in some crowns today. A few decades ago dental porcelain, a form of ceramic that could provide a tooth-like appearance, began to emerge as a crown material. The first types of porcelain could match a real tooth’s color or texture, but were brittle and didn’t hold up well to biting forces. Dentists developed a crown with a metal interior for strength and a fused outside layer of porcelain for appearance.
This hybrid became the crown design of choice up until the last decade. It is being overtaken, though, by all-ceramic crowns made with new forms of more durable porcelain, some strengthened with a material known as Lucite. Today, only about 40% of crowns installed annually are the metal-porcelain hybrid, while all-porcelain crowns are growing in popularity.
Of course, these newer porcelain crowns and the attention to the artistic detail they require are often more expensive than more traditional crowns. If you depend on dental insurance to help with your dental care costs, you may find your policy maximum benefit for these newer type crowns won’t cover the costs.
If you want the most affordable price and are satisfied primarily with restored function, a basic crown is still a viable choice. If, however, you would like a crown that does the most for your smile, you may want to consider one with newer, stronger porcelain and made with greater artistic detail by the dental technician. In either case, the crown you receive will restore lost function and provide some degree of improvement to the appearance of a damaged tooth.
Semi-annual office cleanings are important for keeping teeth healthy and disease-free. If you’ve replaced some of your teeth with dental implants, though, you may be thinking they don’t need as much attention from your hygienist.
It’s quite the opposite — cleaning around implants is important, and actually requires additional attention. The reason for this relates to both how dental implants attach to the jaw and their constructive materials.
Natural teeth are held in place by the periodontal ligament with tiny fibers that attach to the teeth on one side of it and to the jawbone on the other. The ligaments and the gingival (gum) fibers (which are also attached to the tooth) provide some disease resistance to the teeth through its rich blood vessel and collagen network. Dental implants, on the other hand, anchor directly into the jawbone. The titanium integrates with the bone, which naturally attracts to the metal and grows around it, which provides the implant’s eventual attachment strength. The implant doesn’t attach to the gum tissue and won’t develop the same relationship with the periodontal ligament as natural teeth.
Bacterial plaque, the primary cause for tooth decay and periodontal (gum) disease, can collect on an implant crown just as readily as on a natural tooth. Although the materials that make up an implant can’t be affected by a plaque-induced infection, the gum tissues and supporting bone around it can. In fact, because implants lack the disease resistance of the gingival fibers and the ligament attachment, an infection can turn rapidly into a condition known as peri-implantitis that could cause bone and tissue loss and lead to the loss of the implant.
Your hygienist understands the importance of removing plaque and calculus (hardened plaque deposits) from around your dental implant. This often calls for different instruments made of plastics or resins that won’t scratch the implant’s highly polished surface. Scratches provide a haven for bacteria to collect and make it more difficult to dislodge them. Likewise, if the hygienist uses ultrasonic equipment that loosens plaque through vibration, the hygienist will often use nylon or plastic tips to minimize damage to the implant.
And don’t forget your own personal hygiene habits — they’re just as important with dental implants as with natural teeth. Keeping plaque under control, both at home and with your dentist, is crucial to longevity for your dental implants.
If you would like more information on maintaining and cleaning dental implants, 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 “Dental Implant Maintenance.”
Pregnancy is an exciting time in a woman’s life — but it can also generate a lot of questions about both the mother’s and the baby’s health. The realm of dental care is no exception.
Here are a few of the questions we frequently hear from expectant mothers, along with our answers.
Does the baby’s tooth calcium come from my teeth?
This question is frequently asked by mothers who may have had dental issues and are worried they’ll pass on these problems to their baby. Simply put, no — a baby developing in the womb derives minerals like calcium for their teeth and bones from the mother’s diet, not her teeth. What an expectant mother can do is be sure to eat a healthy, balanced diet rich in nutrients and minerals like calcium.
Am I at heightened risk for dental disease during pregnancy?
Pregnancy does cause significant increases in your body’s hormones, particularly estrogen. This can cause changes in the gum tissue’s blood vessels that may make you more susceptible to periodontal (gum) disease (commonly called “pregnancy gingivitis”). It’s also possible later in pregnancy to develop non-cancerous overgrowths of gum tissues called “pregnancy tumors.” The heightened risk for gum disease during pregnancy calls for increased vigilance in monitoring gum health.
What should I do to take care of my teeth?
It’s important to brush your teeth thoroughly twice a day with ADA-approved fluoridated toothpaste to remove plaque, a thin layer of bacteria and food remnants that adhere to teeth. You should also floss daily and consider using an anti-plaque/anti-gingivitis mouthrinse. And, of course, you should see us for regular office cleanings and checkups, or if you notice swollen, tender or bleeding gums, or other abnormalities.
Should I take prenatal fluoride supplements?
This sounds appealing as a way to give your baby a head start on strong tooth development. Studies on its effectiveness, however, remain slim and somewhat inconclusive — we simply don’t have enough data to make a recommendation. What does have a solid research record is the application of fluoride to teeth in young children just after they appear in the mouth — studies involving over a thousand teeth have shown 99% cavity-free results using topical fluoride applications with sealants.
If you would like more information on dental care during pregnancy, 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 “Expectant Mothers.”
Gastroesophageal reflux disease (GERD) is a digestive disorder that can lead to a number of serious health problems. One of them, tooth erosion, could ruin your dental health.
Your stomach uses strong acids to break down food during digestion. A ring of muscle just above the stomach called the esophageal sphincter works as a one-way valve to allow food contents into the stomach but prevent acid from traveling back up through the esophagus.
GERD occurs when the esophageal sphincter weakens and starts allowing acid into the esophagus and potentially the mouth. The acid wash can eventually damage the esophageal lining, causing pain, heartburn, ulcers or even pre-cancerous cells.
Acid coming up in the mouth can cause the mouth’s normally neutral pH to slide into the acidic range. Eventually, these high acid levels soften and erode tooth enamel, increasing the risk of decay and tooth loss.
Accelerated erosion is often a sign of GERD—in fact, dentists may sound the first warning that a patient has a gastrointestinal problem. Unfortunately, a lot of damage could have already occurred, so it’s important to take steps to protect your teeth.
If you’ve been diagnosed with GERD, be sure to maintain good oral hygiene practices like brushing or flossing, especially using fluoride toothpaste to strengthen enamel. But try not to brush right after you eat or during a GERD episode: your teeth can be in a softened condition and you may actually brush away tiny particles of mineral. Instead, wait about an hour after eating or after symptoms die down.
In the meantime, try to stimulate saliva production for better acid neutralization by chewing xylitol gum or using a saliva booster. You can also lower mouth acid by rinsing with a cup of water with a half teaspoon of baking soda dissolved in or chewing on an antacid tablet.
You can also minimize GERD symptoms with medication, as well as avoiding alcohol, caffeine or spicy and acidic foods. Try eating smaller meals, finishing at least three hours before bedtime, and avoid lying down immediately after eating. Quitting smoking and losing weight may also minimize GERD symptoms.
GERD definitely has the potential to harm your teeth. But keeping the condition under control will minimize that threat and benefit your health overall.
If you would like more information on the effects of GERD on dental health, 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 “GERD and Oral Health.”
For millions of Americans, sleep apnea is a serious health condition. Not only can it impair your day-to-day living, you might be more susceptible to high blood pressure, heart disease or stroke.
Sleep apnea occurs when you stop breathing for short periods while asleep. When blood oxygen drops too low, your body automatically wakes you to take a breath. This can disrupt your sleep several times a night. Chronic symptoms like drowsiness, irritability or headaches during the day, or indications you're a loud snorer, are all possible signs of sleep apnea.
Fortunately, we can treat sleep apnea. One way is continuous airway pressure therapy (CPAP), a pump device that supplies pressurized air through a mask to keep the airway open during sleep. Although CPAP is effective, some people find it uncomfortable to use.
There's a more comfortable option for sleep apnea caused by mouth structures like the tongue or tonsils obstructing the airway. It involves a custom-fitted oral appliance worn while you sleep that moves these structures out of the way.
Such appliances come in two basic types. One type fits over the upper and lower teeth and uses tiny metal hinges to move the lower jaw and tongue forward away from the airway. The other fits around and presses the tongue down like a tongue depressor to move it forward.
Before starting treatment, we need to first find out if you actually have sleep apnea and what's causing it (some cases may be more acute and require advanced treatments like jaw surgery). We'll need to perform medical and oral exams and take a history, and we'll likely refer you to a sleep medicine specialist for further testing.
If you have obstructive sleep apnea, a custom-fitted appliance could be a good solution. We'll create and adjust it according to your particular mouth and jaw contours for maximum comfort. Besides the appliance, you might also lose excess weight, adjust your sleep position, seek treatment for allergies, and quit smoking. All these could help reduce sleep apnea.
In any event, your first step is to find out if you have sleep apnea. From there we'll help you find the right treatment to improve your overall health and well being.
If you would like more information on treatments for sleep apnea, 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 “Sleep Disorders & Dentistry.”
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