Cerec Inlays / Onlay

When over 1/2 of the tooth’s biting surface is damaged a dentist will often use an inlay or onlay.

What are inlays and onlays?

Inlays and onlays can be made of porcelain, gold, or composite resin. These pieces are bonded to the damaged area of the tooth. An inlay, which is similar to a filling, is used inside the cusp tips of the tooth; an onlay is a more substantial reconstruction, similar to the inlay but extending out over one or more of the cusps of the tooth.

Traditionally, gold has been the material of choice for inlays and onlays. In recent years, however, porcelain has become increasingly popular due to its strength and color, which can potentially match the natural color of your teeth.

How are they applied?

Inlays and onlays traditionally take two appointments, but through the use of the CEREC 3D we complete these procedures in one appointment. The filling being replaced or the damaged or decaying area of the tooth is removed, and the tooth is prepared for the inlay or onlay. An optical impression is taken and the restoration is designed, milled from a solid block of porcelain, and bonded into place in at the same appointment.

Considerations

Traditional fillings can reduce the strength of a natural tooth by up to 50% leading to facture of the remaining tooth structure. As an alternative, inlays and onlays, being bonded directly onto the tooth using special high-strength resins, can actually increase the strength of a tooth by up to 75%. As a result, they can last from 10 to 30 years. In some cases, where the damage to the tooth is not extensive enough to merit an entire crown, onlays can provide a very good alternative.