Posts for: June, 2015
A “gummy” smile, in which the upper gums are too prominent, is a common condition. There are several causes for gummy smiles — determining which one is the first step to having your appearance changed.
Although perceptions vary from person to person, most dentists agree a gummy smile shows 4 mm or more of gum tissue, and the amount is out of proportion with the length of the crown (the visible tooth). Teeth normally erupt through the gums during childhood and continue development until early adulthood, shrinking back from the tooth until stabilizing in place.
This typically produces a crown length of about 10 mm, with a “width to length” ratio of about 75-85%. But variations can produce differences in the relationship between teeth and gums and the width to length ratio of the teeth. The teeth may appear shorter and the gums more prominent. Worn teeth, caused by aging or grinding habits, may also appear shorter.
If tooth to gum proportionality is normal, then the cause may be upper lip movement. When we smile, muscles cause our lips to retract 6-8 mm from the lip’s resting position. If the amount of movement is greater (meaning the lip is hypermobile), it may show too much of the gums. The upper jaw can also extend too far forward and cause the gums to appear too prominent.
There are a number of ways to improve gummy smiles, depending on the cause. Periodontal plastic surgery known as crown lengthening removes and reshapes excess gum tissue to reveal more of the tooth. Lip hypermobility can be reduced with Botox injections (to paralyze the muscles) or in some cases with surgery to reposition the muscle attachments. Orthognathic surgery can be used to surgically reposition an overextended upper jaw. Other cosmetic enhancements such as orthodontics, bonding or porcelain restorations can also prove effective.
The first step is to obtain an accurate diagnosis for your gummy smile. From there, we can devise the best treatment approach to bring your smile back into a more attractive proportion.
If you would like more information on minimizing a gummy smile, 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.”
It’s hard to imagine, but little more than a century ago today’s “minor” bacterial and viral infections were often deadly. This changed with the advent of antibiotics, drugs which kill disease-causing microbes. Decades after the development of penicillin and similar antibiotics, we routinely rely on them for treating infection. They’re quite prominent in dental care in treating advanced forms of periodontal (gum) disease or reducing bacteria that cause tooth decay.
But the age of antibiotics may be in danger: their overuse in medicine and the food industry has led to the rise of resistant microbial strains — “superbugs” — that no longer respond to first line antibiotics or, in some cases, to second or third line drugs. The U.S. Center for Disease Control (CDC) estimates more than two million people annually will contract one of these superbugs of which more than 20,000 will die. If current practices continue, the growth of resistant strains (as well as allergic reactions among users of antibiotics) will increase. The answer is a more modified use of antibiotics.
For healthcare providers, this means adopting new protocols in which we attempt to prescribe antibiotics that specifically target an identified microbe (which we’ve determined through more rigorous diagnostic testing), and in limited amounts. We must also rein in the practice of antibiotic use in the food industry, routinely administered to livestock to prevent disease or to enhance growth. Many countries, including the U.S., are now moving toward a more limited practice in which only animals that are demonstrably sick receive antibiotics. This will limit their release into the greater environment, which is a contributing factor to growing microbial resistance.
Patients also play a role in the better use of antibiotics. We must first change the perception that antibiotics are a “cure-all” — the answer to every illness. It’s also important for patients who’ve been prescribed antibiotics to complete the course of treatment, even if after a day or two they feel better; stopping antibiotic treatment prematurely increases the chances targeted microbes develop a resistance to that particular drug.
Altering our perception and use of antibiotics will require a tremendous effort for all of society. But making these changes will help ensure antibiotics continue to serve humanity as an important health benefit well into the future.
Porcelain veneers represent one of the best values in cosmetic dentistry, capable of radically changing a person’s smile with little tooth surface preparation. Still, the small amount of tooth enamel usually removed to accommodate them will permanently alter the affected teeth, to the point they will require a veneer or other restoration from then on.
The traditional veneer has remarkable versatility for solving a number of minor cosmetic problems, correcting mild tooth positioning problems and replacing lost or damaged enamel. But to avoid an unnatural bulky appearance, a portion of the tooth enamel must be permanently removed to accommodate them.
In recent years, though, a new concept known as “prepless veneers” has emerged in the field of cosmetic dentistry. Understandably, this new, “drill-free” veneer application has caused a lot of debate among dentists and patients alike, with concerns of bulky, overly-contoured teeth resulting from the technique. But the concept is growing as many well-regarded dentists have incorporated both minimal prep and prepless veneers into their service offerings.
The prepless veneer offers a cosmetic solution that doesn’t alter the tooth permanently. Using techniques such as feathering, which tapers and blends the veneer seamlessly with the tooth at the gum line, we can avoid an unnatural appearance while offering patients a much less invasive outcome.
The main disadvantage of prepless veneers at this time is that they’re not appropriate in every case. In fact, careful patient selection is a key to a successful outcome. For example, relatively large teeth or teeth positioned too far forward don’t work well with an added layer of thickness.
If, on the other hand, you have small, short or worn teeth, or teeth overshadowed by your lips — just to name a few likely scenarios — then you may benefit immensely from prepless veneers without permanent alteration to your teeth. A detailed examination is your first step to finding out if this new technique could provide you with a less-invasive smile makeover.
If you would like more information on drill-free porcelain veneers, 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 “Porcelain Veneers without the Drill.”
In your search for the right toothpaste, you’re inundated with dozens of choices, each promising whiter teeth, fresher breath or fewer cavities. Cutting through the various marketing claims, though, you’ll find most toothpaste brands are surprisingly alike, each containing the same basic ingredients. Taken together, these ingredients help toothpaste perform its primary task — removing daily bacterial plaque from tooth surfaces.
Here, then, are some of the ingredients you’ll find — or want to find — in toothpaste.
Abrasives. A mild abrasive increases your brushing effectiveness removing sticky food remnants from teeth. And unlike the burnt, crushed eggshells of the ancient Egyptians or the brick dust used by 18th Century Brits, today’s toothpaste abrasives — hydrated silica (from sand), calcium carbonate or dicalcium phosphates — are much milder and friendlier to teeth.
Detergents. Some substances in plaque aren’t soluble, meaning they won’t break down in contact with water. Such substances require a detergent, also known as a surfactant. It performs a similar action as dishwashing or laundry soaps breaking down grease and stains — but the detergents used in toothpaste are much milder so as not to damage teeth or irritate gum tissues. The most common detergent, sodium lauryl sulfate, is gentle but effective for most people. If it does cause you irritation, however, you may want to look for a paste that doesn’t contain it.
Fluoride. This proven enamel strengthener has been routinely added to toothpaste since the 1950s, and is regarded as one of the most important defenses against tooth decay. If you’re checking ingredients labels, you’ll usually find it listed as sodium fluoride, stannous fluoride or sodium monofluorosphosphate (MFP). And since it inhibits bacterial growth, fluoride toothpastes don’t require preservative additives.
Humectants, binders and flavoring. Humectants help toothpaste retain moisture, while binders prevent blended ingredients from separating; without them your toothpaste would dry out quickly and require stirring before each use. And, without that sweet (though without added sugar) and normally mint flavoring, you wouldn’t find the average toothpaste very tasty.
The ADA Seal of Approval. Although not an ingredient, it’s still sound advice to look for it on toothpaste packaging. The seal indicates the product’s health claims and benefits are supported by the research standards set by the American Dental Society; and all ADA approved toothpastes will contain fluoride.
If you would like more information on toothpaste and other oral hygiene products, 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 “Toothpaste: What’s in it?”