“This Enamel is Not That Enamel!”

Posted by drgracesun on August 2, 2009 under Information | Be the First to Comment

Let me start by saying that – for some of you – this post may seem a bit silly. However, I get questions in my office about enamel View definition in a new window, the white coating of our teeth that the outer layer is made of. Some people confuse the definition “enamel.” Is this enamel the same as that enamel? What is enamel, and how can you keep the different types straight?

The enamel (A) of a tooth meeting the dentin layer (B).

Tooth enamel is the hardest and most highly mineralized material in a mammal’s body. 92- 96% of enamel consists of minerals (hydroxyapatite, a phosphate and calcium salt) with the remaining part being water and organic material. Enamel makes up the shiny hard outer layer of a tooth for protecting dentin and pulp View definition in a new window, while at the same time carrying out the function of chewing and grinding our food. When you brush your teeth in the morning and at night (and after every meal – hint hint!), you are in fact brushing enamel. The normal color of enamel varies from light yellow to grayish white. At the edges of teeth where there is no dentin underlying the enamel, the color sometimes has a slightly blue tone. Since enamel is semitranslucent, the color of dentin and any restorative dental material underneath the enamel strongly affects the appearance of a tooth.

One day I was asked “why can’t we use bathtub enamel to fix tooth decay, since it is a cavity View definition in a new window on the enamel?” Well, in an effort to permeate some inquiring  minds, here are a few other types of enamel – which should never be confused with tooth enamel! Vitreous enamel is the colorful result of fusing powdered glass to a decorative object (usually metal, glass or ceramic View definition in a new window tile) by firing, usually between 750 and 850 degrees Celsius. The powder melts and hardens to a smooth, durable vitreous coating used in aesthetic applications, such as decorative work. This technique of applying enamel to add color or texture was originally mastered by the ancient Egyptians! Enamel paint is a type of liquid paint that gives a brilliant glossy shine when cured, and is especially useful in attention-grabbing mediums (such as street signs, door painting and road markers). The term “enamel paint” can also mean an object that is covered in an oil-base paint, but recently has come to include latex-and-water based paints.

Yes, it’s true that there are several different uses of the word “enamel,” but don’t confuse the brilliant white enamel of your teeth with enamel paint or decorative enamel!

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“Precaution: Antibiotics Can Stain?”

Posted by drgracesun on July 1, 2009 under General Dental Knowledge, Healthy Smile, Information | Be the First to Comment

Antibiotics help us fight infections, however certain antibiotic medication could dim your smile! When taking antibiotic medications, it is important to realize that these types of medications not only eliminate harmful bacteria, but also affect the body by disturbing the balance of our gastrointestinal system. Sometimes the chemical components of antibiotic meds can leave deposits in the hard tissues of the oral cavity View definition in a new window, like in the tooth and bone, affecting the color of the teeth.

Tetracycline staining: notice the yellow and brown bands.

It has been well established that commonly prescribed antibiotics like tetracyline, if taken during the second half of the pregnancy can affect the future teeth of the fetus. Children younger than eight years old with prescription tetracycline (for treating ear infections) can have seriously discolored teeth as well from chemical deposits on the inner layer of the tooth structure (dentin), causing grayish brown bands that are not so easy to correct. Discoloration is usually a consequence of the chemicals affecting the developing stage of the teeth. If any discoloration is noticed in a child with primary teeth, promptly speak with your doctor or dental professional! Review the child’s history to determine whether the discoloration could possibly be associated with any medications, diet or even drinking water. Discoloration of erupted permanent teeth has also been proven to result from antibiotic use, as discussed in an earlier edition of the Journal of the American Dental Association. Although this is fairly rare, discoloration can happen to nearly anyone taking tetracycline, erythromycin, minocycline, or rinses containing chlorhexidine antiseptic View definition in a new window solution. Keep your dental professional informed as to your antibiotic regiment.

In Kentucky, a 25-year-old woman whose teeth were gray-streaked from use of antibiotics was highlighted in a study completed by Frederick M. Parkins, D.D.S., of the University of Louisville School of Dentistry. The patient took two years of tetracycline therapy for teenage acne. She had been taking minocycline (brand name Minocin), a synthetic form of tetracycline and now has very discolored teeth (see above picture). Thankfully, only about 3-6% of adult antibiotic users will experience tooth-staining. Discoloration can develop as early as one month after the antibiotic regiment begins, but the staining could take years to appear!

Prevention is always the best solution – avoid teeth staining medications. If staining does occur, speak with your dental professional about options to whiten affected teeth. Procedures such as in-office or take-home whitening and bleaching View definition in a new window will be the first conservative treatment option available to you before porcelain veneers View definition in a new window or bonding View definition in a new window procedures, which work well at masking over discolored areas of teeth.

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“Save Your Job? Save Your Smile!”

Posted by drgracesun on June 7, 2009 under Beautiful Smile, Healthy Smile, Information, Smart Smile | Read the First Comment

In the current recession View definition in a new window, unemployment rates are at all time highs! It’s a scary prospect to be faced with possible job loss, but especially in professions where appearance is key (like business), your teeth can make or break a first impression. Just as you wear a suit to appear professional, tidy and attractive, having a great set of teeth will accent the professional, attractive winning smile on your face.  The people businessmen encounter every day (colleagues, clients and the like) are constantly evaluating the people they work with. Your job just may get that extra boost of security with a clean, healthy and brilliant smile.

A healthy smile could secure your job!

A healthy smile could secure your job!

According to a study recently completed by the Academy of General Dentistry (AGD), men are less likely to visit the dentist than their female counterparts. Nearly 45 percent of respondents felt that men don’t see a need to go to the dentist, and about 30 percent of those polled reported that men may not visit the dentist because they are afraid or embarrassed to go. This disturbing trend of not visiting the dentist could not only have devastating effects on one’s teeth and oral health, but on their professional well-being and livelihood!

“In my practice, more men are coming in and requesting bleaching View definition in a new window, veneers View definition in a new window and bonding View definition in a new window,” says AGD spokesperson J. Nick Russo, Sr., DDS, FAGD. “Many have noticed the positive effects from a colleague’s improved smile and realize that a great smile has a lot of value in the business world.” A  poorly cared-for smile not only looks bad, but portrays an image of uncleanliness and sloth. “Can a person who doesn’t take care of his teeth, of himself, take care of my portfolio?” This is a question that may be asked in the minds of the people you work with and the people you work for!

As the job market becomes more and more competitive, employers are constantly looking at ways to differentiate potential candidates for positions, and a healthy smile is a great way to make a great first impression. Existing employees are also facing tough competition with young grads who have been raised in households emphasizing the importance of oral health more so than past generations – so what are you waiting for? A healthy and beautiful smile will improve your overall health, your image and your self confidence – it could even improve your job security!

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“How Long Will It Last? Bonding vs. Veneers”

Posted by drgracesun on January 30, 2009 under Beautiful Smile | Read the First Comment

“Does it hurt? How long will it last? How long will it take? How much does it cost?”

These are common questions from patients looking for cosmetic dentistry.

If you’re interested in cosmetic dentistry to get yourself a winning smile, whether the problem is mis-alignment, cracked or chipping teeth, unsightly spacing, uneven or dark colored dentition, uneven or too much (or not enough) smile showing, or even gum erosion, the eternal question always arises: What would be the best solution?

In the past, crowns were the primary choice for masking tooth problems, but since the late 1980s, cosmetic dentistry has offered both bonding View definition in a new window and veneers View definition in a new window to improve your smile. This leads to the eternal question: “Bonding or veneers?”

Dental bonding involves the application of a durable composite View definition in a new window material directly to the surface of the tooth, by your dentist, which is then sculpted and artistically shaped to the exact look the patient desires, to blend naturally and seamlessly with the patient’s existing teeth. A laser (or high intensity light) is then used to cure the composite material, hardening and reinforcing it to the surface of the tooth. This bonding technique has many applications, not only for aesthetic uses but also for prosthodontics and pediatric dentistry. The advantages to dental bonding are a quick treatment time (can be completed in one office visit after a consultation), and a relatively low cost per tooth when compared with porcelain veneers. Durability of bonding will be affected by the oral environment. Since composite bonding is a mixture of quartz particle (70% – 80% filled) and resin, discoloration and breakage is inevitable if your mouth has a high acidic pH value (if you are a soda drinker, lemon lover or candy sucker), if the bonding was not supported by a solid tooth structure, or if you are a night grinder.

Porcelain veneers are fabricated in the laboratory. They are 100% filled with hard mineral particles, and are fired at a high temperature with a vacuum (to procure the best physical properties to sustain the veneer’s strength in the harsh oral environment). Compared to bonding, there is more procedural work involved with porcelain veneers. There are different techniques to fabricate the veneer pieces (which call for different methods of preparation for the tooth); the pressing technique produces a stronger veneer, but requires 0.8mm thickness of the veneer. The porcelain powder build-up technique can produce super thin veneers (0.3mm), which produces a very conservative look on your tooth structure, while at the same time keeping a natural silhouette. The veneer piece lays on top of the tooth structure and is similar to a press-on nail. They chemically adhere to the tooth with bonding composite cement; since porcelain is acid resistant and stronger in physical properties than composite material, this restoration provides long-term service. When getting the veneers, the first visit consists of preparation and imprints f the teeth (which might involve anesthetic View definition in a new window). After this, you will leave the office with temporary veneers which look like natural teeth. A wafer-thin veneer is then crafted out of porcelain which is seamlessly cemented to the front side of the tooth on the second visit. In addition to straightening teeth, porcelain veneers can close gaps between teeth, whiten teeth that do not respond well to bleaching View definition in a new window, and can also be used to protect damaged tooth surfaces. The advantages to porcelain veneers over bonding is that veneers are much longer lasting (and stronger) than composite bonding material.

Whether you decide to invest in dental bonding or porcelain veneers, make sure you have all work done at a reputable dentist, preferably at a practice which has its own in-house ceramic View definition in a new window lab. When ceramic work is done by an in-house lab with an in-house ceramist, any changes that need to be made to the length or color of the veneers can be done without requiring an additional office visit. Remember, the result of the cosmetic procedures are truly varied depending on the ability of the dentist, ceramist, your clinical situation and the communication between all parties involved. Do your research!

Both bonding and veneers are additive procedures, depending on the position, alignment and shape of your teeth, which is the foundation for any new restorations. This foundation will need to be in the right fundamental situation to receive restorations to result in a fabulous smile. In other words, sometimes, you do not need to do much to your own teeth before applying cosmetic restorations. It might be necessary to reduce or modify the tooth structure before anything can be added onto it to make it look perfect.

There is some risk involved with cosmetic bonding or veneers, so be cautious with any cosmetic procedure. A comprehensive evaluation of your present dental condition is absolutely necessary as a first step; blue prints of your teeth and of your prospective dental project are needed to establish clear verbal communication between all parties involved (including you), including possible mock-up or wax-up models to preview possible changes, which could avoid costly mistakes.

Do your homework: finding the right dental professional, discussing every aspect of your dental needs, understanding the pros and cons of each procedure, and making an educated decision will ensure you get the smile you’ve always wanted.

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