Fillings vs Onlays: Which is Right for You? Understanding the Difference


When you visit the dentist with a toothache or cavity, you may be presented with different treatment options, such as fillings or onlays. But what exactly are they, and which is the best option for you? In this article, we’ll explore the difference between fillings and onlays to help you make an informed decision.

What are Fillings?

A filling is a type of dental restoration that is used to repair a small to medium-sized cavity. The dentist removes the decayed portion of the tooth and fills it with a material such as composite resin, amalgam, or porcelain. Fillings are a quick and simple solution for cavities and are usually completed in one dental visit.

What are Onlays?

An onlay is a type of dental restoration that is used to repair larger cavities or damage to the tooth that extends beyond the cusps (the pointed parts of the tooth). Onlays are also called partial crowns because they cover more of the tooth than fillings. They are custom-made in a dental laboratory and are usually made of porcelain, gold, or composite resin. Onlays require two dental visits to complete.

Fillings vs Onlays: Which is Right for You?

The decision between a filling or an onlay depends on the size and location of the cavity, as well as the strength of the tooth. Here are some factors to consider:

  1. Cavity size: If the cavity is small or medium-sized, a filling may be sufficient. However, if the cavity is large or extends beyond the cusps, an onlay may be necessary.
  2. Location of the cavity: If the cavity is in a visible area, such as a front tooth, a filling may be the best option for aesthetics. However, if the cavity is in a molar or premolar, an onlay may be better suited to withstand the chewing forces.
  3. Tooth strength: If the tooth is weak due to decay or previous fillings, an onlay may be necessary to provide more support.
  4. Personal preference: Some people prefer the aesthetic appearance of fillings, while others prefer the durability and longevity of onlays.

Ultimately, the decision between a filling or an onlay is best made in consultation with your dentist. They will examine your tooth, discuss your options, and recommend the best solution for your individual needs.

In conclusion, both fillings and onlays are effective treatments for cavities and tooth decay. The decision between the two depends on several factors, including the size and location of the cavity, tooth strength, and personal preference. Consult with your dentist to determine which option is best for you. Remember, regular dental check-ups and good oral hygiene practices can help prevent cavities and reduce the need for dental restorations in the first place.

Reviews From Our Patients.

Lyn FranklinLyn Franklin
13:24 12 Sep 23
I have been coming here for years. The staff are friendly and Dr. James did great putting in my new crown.
LennyLenny
18:24 11 Sep 23
Can't say enough good things about Wappingers Falls Dental Arts. Karen, Dr. James and the whole administrative staff make every visit a pleasant one. Highly recommended!
Nicole DawsonNicole Dawson
00:21 08 Sep 23
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