Restoration with Dental Inlays and Onlays

By | March 4, 2014

If you want to restore your damaged tooth where the damage is not much to place crowns, dental inlays and on lays are the right choice to fill cavities. Most dentists prefer this technique where a healthy tooth is repaired without removing.
Before going for dental inlays and outlays, you should know the difference between inlays and outlays.

In what cases are dental inlays and on lays performed?
These are performed with people having tooth decay where crowns are not necessary.

Inlays versus outlays
Dental inlays and on-lays are similar but they vary in the place where the filling to be done.

Inlays are used to fill:

  • Center of the tooth surface
  • Rounded edges
  • Space between the cusps

Onlays are used to fill:

  • Space between one or more cusps
  • Entire surface involved in the mastication process
  • Outside or on either side of the teeth.

What are the types of Inlays & On lays?
Dental inlays & outlays are of following types based on the type of material used.

  • Porcelain
  • Metal
  • Composite

Dental onlays are of following types depending on the number of visits required for process.

  • Direct onlays (single visit)
  • Indirect onlays (two visits)

What are the steps involved?
The steps involved in the dental inlays & on lays are:

  • The dentist examines the decayed tooth where filling to be done.
  • Removes decayed part of the tooth and prepares it for dental inlays & on lays.
  • Then impressions of the tooth is taken and send to the lab to prepare in lay or onlay filling.
  • Preserves the tooth with temporary filling.
  • In the next visit, temporary filling is removed and prepared inlay or onlay filling is placed and cemented on the tooth with bonding agent.
  • In direct method, the entire process completes in one single visit and does not require any laboratory preparation.

Materials used as inlays & on lays:
materials used as inlays and onlays are porcelain, gold, resins, plastic or glass, mixed alloy.
Porcelain is resistant to stains and it resembles natural tooth color. Gold is used as it is durable and resistant to stains.

Advantages of inlays and on lays
The advantages of Inlays and on lays are

  • These are used to fill the cavities without removing healthy teeth
  • These gives strength and support to the decayed tooth
  • protects teeth from decay
  • These are long lasting for several years
  • Increase the appearance of teeth
  • Resistant to stains

Disadvantages of inlays and on lays
The disadvantages of inlays and onlays are very limited.

  • Expensive
  • In some cases requires two visits.

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