Posts for: September, 2018
Dental crowns are an essential means for restoring damaged or unattractive teeth. A well-crafted crown not only functions well, it looks and blends seamlessly with the rest of the natural teeth.
Crowns are artificial caps that cover an entire visible tooth, often used for heavily decayed or damaged teeth or as added protection after a root canal treatment. Most crowns are produced by a dental lab, but some dentists are now creating them in-office with computer-based milling equipment. On the whole, the various crowns now available function adequately as teeth—but they can vary in their appearance quality.
In the early to mid 20th Century the all-metal crown was the standard; but while durable, it could be less than eye-pleasing. Although more life-like dental porcelain existed at the time, it tended to be brittle and could easily shatter under chewing stress.
Dentists then developed a crown that combined the strength of metal with the attractiveness of porcelain: the porcelain fused to metal or PFM crown. The PFM crown had a hollow, metal substructure that was cemented over the tooth. To this metal base was fused an outer shell of porcelain that gave the crown an attractive finish.
The PFM reigned as the most widely used crown until the mid 2000s. By then improved forms of porcelain reinforced with stronger materials like Lucite had made possible an all-ceramic crown. They’re now the most common crown used today, beautifully life-like yet durable without the need for a metal base.
All-ceramics may be the most common type of crown installed today, but past favorites’ metal and PFM are still available and sometimes used. So depending on the type and location of the tooth and your own expectations, there’s a right crown for you.
However, not all crowns even among all-ceramic have the same level of aesthetic quality or cost—the more life-like, the more expensive. If you have dental insurance, your plan’s benefits might be based on a utilitarian but less attractive crown. You may have to pay more out of pocket for the crown you and your dentist believe is best for you.
Whatever you choose, though, your modern dental crown will do an admirable, functional job. And it can certainly improve your natural tooth’s appearance.
There are a number of ways to improve unsightly teeth. You can, of course, replace them with dental implants — but not if they're still viable. You can crown them: however, you'll have to significantly reduce their structure for the crowns to fit over them.
There is another less invasive option for teeth with mild to moderate imperfections — you can cover them with porcelain veneers. As the name implies, a veneer is a thin covering of dental porcelain bonded to the outside surface of a tooth. They literally put a “new face” on chipped, stained or slightly gapped teeth.
You'll first need a dental examination to ensure your teeth are reasonably healthy and that you don't have any significant dental problems that could interfere with the veneers. We can then design your veneers' shape and color to achieve the look you desire. We can also create a temporary “trial smile” with acrylic replicas of your proposed veneers to give you a realistic impression of your future smile.
The next step is the possibility the teeth need to be prepared for the veneers. Although quite thin, veneers can still make the teeth look larger or bulky. To compensate, we remove some of the tooth enamel. Although much less than for a crown, this alteration is still permanent: your teeth will need some form of restoration from now on. There are also “no-prep” veneers, which require no tooth surface reduction.Â Ask us if this is an option.
We then make an impression of the teeth, which with other information will guide a technician at a dental laboratory to manually create your new veneers. This can take several weeks and requires a high degree of artistry to produce a custom product that will match your teeth.
Once they've arrived, we'll use a permanent bonding process to precisely attach them to your teeth.Â It will then be up to you to care for your veneers, especially not biting down on anything hard that could chip or crack them. You should also maintain regular dental visits and proper oral hygiene to keep your smile as bright and attractive as possible.
Although small in size, veneers can make a big impression. They can restore the smile you once had — or give you the look you've always wanted.
If you would like more information on 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: Strength & Beauty as Never Before.”
Dental implants are considered the premier option for tooth replacement. While all implant procedures follow the same general concept — a titanium post surgically inserted into the jawbone with an attached life-like crown — the installation process can vary.
From their earliest history, implants have usually been installed through a two-stage process. In the first stage, the surgeon inserts the titanium post in the bone and leaves it “submerged” below the gum level to protect it from oral bacteria and the effects of chewing and biting. About three months later after the bone attaches to the titanium (a process called osseointegration), the surgeon then performs the second stage by re-exposing the implant and attaching a temporary abutment and crown for the patient to wear while the permanent abutment and crown are fabricated and later attached in 2-6 weeks.
In recent years, advancements in materials and design have made possible a one-stage process that allows the implant to protrude above the gum line during osseointegration and shortens the process. After the initial three-month healing period, the implant is ready for “loading” with the permanent crown.
The choice between which of these two procedures should be used for your implants will first depend on the type of tooth being replaced. A front tooth benefits from the one-stage procedure for cosmetic reasons because the surgeon can install a temporary crown to the exposed abutment during osseointegration (as long as the temporary tooth isn’t in functional contact with other teeth). An implant for a back tooth, on the other hand, doesn't have a large cosmetic demand so those one stage procedures usually end up with an exposed healing abutment but no temporary crown.
The strength of the bone is also a factor. Some bone tends to be softer, particularly in the back of the mouth. There’s a chance the implant could move in this softer bone, adversely affecting the outcome. For this reason, the two-stage procedure can be the preferred approach for posterior teeth as it offers more protection from movement.
You can be sure we’ll consider all these and other factors during your initial examination, and then advise you on the best approach. Above all, we want to make sure — whether a one-stage or a two-stage implant process — the result is a smile you can be proud of.
If you would like more information on 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 “Staging Surgery in Implant Dentistry.”