Posts for: January, 2017
Have you heard about dental sealants? These preventive treatments have been available for many decades, and more and more children are taking advantage of them. The National Institutes of Health (NIH) estimates that around 30% of kids from 6 to 11 years of age have had sealants applied to their molars (back teeth). Sealants are designed to reduce the incidence of cavities by filling in or eliminating the pits or crevices found in all molars, where decay-causing bacteria can hide and your brush can't reach. But do they really work?
Now, the research is in, and the answer is clear — YES!
Two major studies, each of which reviewed the results of thousands of patients over several years, recently came to the same conclusion: Dental sealants are effective at reducing cavities, and their benefits can last for four years (or more) after application. In general, the studies showed that kids who didn't get sealants were twice, three times, or even more likely to get cavities, compared to kids treated with sealants.
Sealants themselves are protective coatings made of plastic resins or glass-like materials. They are applied in liquid form, and then hardened by a special light. When “painted on” to the chewing surface of a molar, sealants fill in the tiny crevices, or “pits and fissures,” that are found there. Uneven tooth surfaces form a perfect breeding ground for the bacteria that cause tooth decay; worse yet, the bristles of a tooth brush can't usually reach them. That's what makes these areas highly susceptible to tooth decay.
Applying sealants is a quick and painless procedure that doesn't require any numbing shots or drilling. Many kids start getting sealants when the first permanent molars come in, around age 5 to 7; they may have more sealant treatments when additional molars emerge, between the ages of 11 and 14.
Sealants are recommended by the American Dental Association and the American Academy of Pediatric Dentistry, and have only a modest cost per tooth. On the other hand, having a cavity filled generally costs substantially more, and may result in more trouble (and expense) down the line — so sealants can make sense economically, as well as preventively. This is especially true for those at high risk for tooth decay.
If you have questions about dental sealants, please contact us or schedule a consultation. You can read more in the Dear Doctor magazine article “Sealants for Children,” and “Top 10 Oral Health Tips for Children.”
What makes a beautiful smile? The teeth, of course: bright, evenly shaped and precisely aligned with each other. But your teeth can be as perfect as can be and your smile will still appear unattractive.
The reason? Your gums show more than they should when you smile.
What's considered a gummy smile is largely a matter of perception that can vary from person to person. As a rule of thumb, though, we consider a smile “gummy” if four millimeters (mm) or more of the gums show.
Fortunately, we can minimize the gums' prominence and make your smile more attractive. But what methods we use will depend on why your gums stand out. And it's not always because of the gums themselves.
It could be your teeth didn't erupt normally during dental development. Mature crown (the visible part of the tooth) length is normally about 10 mm with a width about 75-85% of that. But an abnormal eruption could result in teeth that appear too short, which can make the gums stand out more. We can correct this with a surgical procedure called crown lengthening in which we remove excess gum tissue and, if necessary, reshape the underlying bone to expose more of the tooth crown.
Another potential cause is how far your upper lip rises when you smile. Normally the lip rises only enough to reveal about 4 mm of teeth. In some cases, though, it may rise too high and show more of the gums. We can modify lip movement in a number of ways, including Botox injections to temporarily paralyze the lip. A more permanent solution is a lip stabilization procedure. It sounds bad, but it's a fairly simple procedure to surgically reposition the muscle attachments to restrict movement.
Your gummy smile may also result from an upper jaw too long for your facial structure. We can correct this with orthognathic (“ortho” – straighten, “gnathos” – jaw) surgery. During the procedure the surgeon permanently positions the jaw further up in the skull; this will reduce the amount of teeth and gums displayed when you smile.
Discovering the true cause of your gummy smile will determine how we treat it. After a complete oral examination, we can then discuss your options to transform your smile into a more attractive one.
If you would like more information on treating gummy smiles and other cosmetic problems, 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 “Gummy Smiles.”
Have you been considering dental implants but aren't sure if they're the best option for you? Dr. Gregory Mark, your Forest Hills, NY dentist at Forest Hills Dental, shares some information that will help you make up your mind.
Dental implants offer several important benefits, including:
- Permanence: Titanium dental implants bond to your jawbone, permanently replacing your tooth roots. Once bonding is complete, your dentist will connect a crown to the implant. Your implant can last your entire life, as long as you make good oral hygiene a priority.
- Comfort: Your implant provides a secure foundation for your new crown, which makes chewing very comfortable. Most people report that their implants feel just like natural teeth.
- Jaw Strength: Losing a tooth affects the strength of your jawbone because the bone begins to recede when it's no longer stimulated by your roots. Implants take over for your natural roots to keep your jawbone strong.
- Versatility: Dental implants are a good choice if you've lost one tooth, but they can also be used to replace multiple teeth. Implant-supported dentures are an excellent alternative to traditional full dentures and usually only require four to six implants per arch.
Things To Consider
- Bonding Time: After you receive your implant at your Forest Hills dentist's office, you'll need to wait three to six months for it to bond to your jawbone before you can receive a crown.
- Suitability: Dental implants are not recommended if you smoke or have a disease that can interfere with healing, such as diabetes. You also can't get an implant if your jawbone isn't deep enough, although bone grafts can improve bone depth, in many cases.
Are you interested in dental implants but aren't sure if you're a good candidate? Call Gregory Mark, D.D.S, your Forest Hills, NY dentist at Forest Hills Dental, at (718) 275-9792 to schedule an appointment.
Your teeth naturally wear as you age, but you may be making it worse if you grind your teeth.
Teeth grinding is a behavior that causes the teeth to gnash, grind or clench against each other generating forces greater than those produced from normal biting. These forces often result in tooth wear that cause not only functional problems but result in a more aged appearance. Grinding occurs while a person is awake, but most often episodes occur while asleep at night.
Teeth grinding is quite common in children, but not usually of great concern since most grow out of it. There's even a school of thought that teeth grinding might even help readjust an uneven bite.
Among adults, though, other factors seem to contribute to teeth grinding. Many researchers believe nighttime grinding occurs as a person passes through different sleep phases including deep REM (Rapid Eye Movement) sleep. It may also have a connection with chronic snoring.
Certain medications seem to contribute to teeth grinding, particularly psychoactive drugs like amphetamines. Nicotine falls in this category, which could be why tobacco users report twice the incidence of the habit compared to non-users. Teeth grinding is also connected to another fact of modern life: stress. People who grind their teeth tend to have higher levels of anxiety, hostility or depression.
Because there are multiple triggers, there are many treatment approaches. Whatever course we take, our aim is to eliminate or minimize those factors that contribute to your habit. For example, we can create a custom mouth guard for night wear to prevent the teeth from making solid contact and thus reduce the biting pressure.
Perhaps the most important thing is to control or reduce stress. This is particularly helpful at night to prepare you for restful sleep by changing some of your behaviors. We also encourage investigating other stress therapies like biofeedback, meditation or group therapy.
Whatever the means, bringing teeth grinding under control not only reduces problems now, but could also help prevent abnormal teeth wearing and future health issues down the road.
If you would like more information on causes and treatments for teeth grinding, 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 “Stress & Tooth Habits.”
Children have a lot of energy that's often channeled through physical activities and sports. Unfortunately, this also increases their risk of injuries, particularly to their teeth.
Injuries to the mouth can endanger permanent teeth's survival. For an older tooth, a root canal treatment might be in order. Not so, though, for a pre-adolescent tooth, even if it is permanent.
A young permanent tooth is still developing dentin, the large layer just below the enamel. This growth depends on the connective tissue, blood vessels and nerves within the pulp in the center of the tooth. Because a root canal treatment removes all of this tissue, it could stunt dentin and root growth and endanger the tooth's future.
Instead, we may need to treat it with one of a number of modified versions of a root canal, depending on what we find. If the tooth's pulp is unexposed, for example, we may need only to remove the damaged dentin, while still leaving a barrier of dentin to protect the pulp. We then apply an antibacterial agent to minimize infection and fill in the area where we've removed tooth structure.
If some of the pulp is exposed, we may perform a pulpotomy to remove just the affected pulp and any overgrown tissue. We then place a substance that encourages dentin growth and seal it in with a filling. If we go deeper toward the root end, we might also perform procedures that encourage the remaining pulp to form into a root end to stabilize the tooth.
If the entire pulp has been damaged beyond salvage, we may then turn to a procedure called an apexification. In this case we clean out the pulp chamber; at the root end we place mineral trioxide aggregate (MTA), a growth stimulator that encourages surrounding bone to heal and grow. We then fill in the root canals and chamber with a special filling called gutta percha to seal the tooth.
The deeper we must penetrate into the pulp, the higher the chances the young tooth's dentin and roots won't form properly, leading to later problems and possible loss. But by employing the appropriate one of these methods, we can minimize the risk and give your child's damaged tooth a fighting chance.
If you would like more information on children and dental injuries, 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 “Saving New Permanent Teeth after Injury.”