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Porcelain Inlays & Onlays

Porcelain Onlays / Inlays

Schedule your inlay/onlay consultation with one of our prosthodontics specialist today.


Dental Inlays and Onlays: the “Three Quarter Crown”

If you have a cavity or broken tooth, most Atlanta dentists will give you one of two options to repair it: a filling or a full coverage crown.

With a filling, you can repair an area inside of a tooth, such as when a cavity is present. But if too much of the tooth is damaged or decayed, filling the thin shell of enamel that is left simply puts you in a position of additional fractures and breakage from everyday wear. It just can’t hold up to normal use.

On the other hand, a crown covers your entire tooth surface. It requires the tooth to be gently prepared and reshaped so that a “cap” can be bonded over it without looking or feeling too bulky. If your cavity is too large for a filling, most of the time the dentist will jump to a crown.

The Missing Link

Fortunately, there’s another not-so-popular option that might be far more appropriate for your moderately damaged tooth. What is it? An inlay or an onlay.

Sometimes referred to as a “three-quarter crown,” inlays and onlays restore a larger portion of your tooth than a filling can; yet don’t cover the entire surface of your tooth the way a crown would. Instead, the lab-formed porcelain “filling” is customized for each patient. It restores the damaged area, but leaves healthy enamel in tact.

The design between the two is just slightly different. An inlay extends further inside of the grooves of a tooth, while an onlay rests over a greater portion of the “cusps” to rebuild the chewing surfaces. The benefits and treatment process is essentially the same for each.

What are the Benefits of Inlays and Onlays?

Advantages of inlays and onlays make them a great selection if you need more than a filling, but don’t quite require a crown. Instead of going ahead and crowing the tooth, an inlay or onlay allows you to:

  • Preserve more tooth structure, as healthy enamel does not need to be drilled away for a crown
  • Maintain structural integrity for biting and chewing
  • Enjoy improved oral hygiene, as there is no “crown margin” circling along the gumlines
  • Improved aesthetics, with custom matched porcelain
  • A more natural appearance to the tooth
  • Preventing the enamel from fracturing even further, so that you can avoid a root canal

Unfortunately, placing a crown on a tooth requires the entire surface of enamel to be drilled away (or “prepped”) so that there is room for the crown to fit over it.

If your enamel is healthy for the most part, it’s easy to see why removing it can sound extreme. But if your general dentist isn’t familiar with inlays and onlays, the only option left is to have the tooth crowned.

Seeing a specialist such as a prosthodontist can make getting an inlay or onlay as simple as possible – giving you the chance to save your enamel and your smile.

Is This a New Procedure? Why Don’t Many Dentists Offer Them?

Inlays and onlays are not new. In fact, they’ve existed for several years. Unfortunately, not many dentists choose to use them in their practices. Why? Most likely because the procedure is just as time and energy-intensive as a crown. And years down the road, if the tooth wears out, the tooth may need a crown anyway. This kind of reasoning typically causes general dentists to bypass the inlay or onlay altogether.

However, inlays and onlays are very popular with restorative experts like Prosthodontists. The American Dental Association recognizes the prosthodontic specialty as dentists that have received an additional two to three years of formal education in restorative and prosthetic dental techniques.

Attaining a higher level of training enables Prosthodontists to perform less frequent procedures (like inlays and onlays) with a greater level of expertise than a general dentist. This should not be confused with a “cosmetic” dentist, as cosmetic dentistry is not recognized by the ADA as a specialty. Prosthodontists are, however, the most highly skilled dental specialists when it comes to restorations like inlays, onlays and cosmetic treatments such as porcelain crowns or veneers.

The Treatment Process

Having an inlay or onlay procedure has many similarities to a crown treatment, but because most dentists do not receive as extensive training in the procedure, it’s best to see a Prosthodontist. With the right doctor, you can ensure that your procedure will be performed as efficiently and successful as possible.

First, your tooth will be thoroughly numbed so that you do not experience any discomfort. Then, the damaged or decayed area of your tooth will be removed, with as much healthy enamel as possible left in place.

Next, an impression is made of your tooth. We then create a model of the tooth and send these to our lab. There, the lab technician hand-designs a customized inlay or onlay to reflect the unique needs of that specific tooth.

A temporary filling will be placed over your tooth to prevent any sensitivity while you wait for the custom restoration to be made. About 10 business days later, your inlay/onlay will be ready.

Finally, the temporary filling is removed, and your inlay/onlay is cemented permanently into place. Your bite is assessed to ensure that there are no irregularities that could alter the way you chew, or cause TMJ concerns.

What Are They Made Of?

Traditionally, inlays and onlays have been made of either porcelain or gold. Gold is sometimes preferred in areas where chewing forces are greater, but they pose an aesthetic concern. Thankfully, porcelain dental materials have tremendously improved over the past several years, making them more durable and cosmetically pleasing. It’s now possible to use porcelain for nearly all of the inlays and onlays that we place in our Atlanta office.

With a porcelain restoration, we’re able to closely match the shade of the inlay or onlay to the color of your natural tooth. This allows the restoration to blend seamlessly with the entire tooth, giving us the option of using them just about anywhere in the mouth. When you talk or smile, other people won’t be able to tell that anything is there.

Is an Inlay or Onlay Right for You?

An inlay or onlay is a great option if you’ve experienced:

  • A large, failing, or leaky filling
  • Fractured/chipped teeth
  • Fillings that fall out over and over again
  • Cavities that are too large to fill

Ultimately, the unique health, integrity, and existing damage to a tooth will determine whether or not an inlay/onlay is appropriate. That being said, most Atlanta dentists will not suggest inlays and onlays because they simply do not perform the procedure on a regular basis. Instead, they move to a more comprehensive and invasive crown.

Fortunately, our prosthodontist is an expert at placing inlays and onlays. In fact, Dr. David Zelby has placed thousands of inlays/onlays in the course of his career. If you’re considering having an inlay or onlay made to save your tooth, don’t you want someone with the specialized skill and training for this less-than-common procedure instead of a “cosmetic” dentist that only does a few each year? We thought so!

Call Aesthetic and Implant Dentistry of Atlanta to schedule your inlay/onlay consultation with one of our  prosthodontics specialist  today.