Both inlays and onlays are considered “indirect” fillings or partial crowns, meaning that they are fabricated outside the mouth and then bonded to the tooth. The primary distinction between an onlay and an inlay is that an onlay will cover a cusp of the tooth, whereas an inlay only fills the area between the cusps.
Once the tooth has been prepared, an impression of it is made and sent to the dental laboratory. The impression can be either be made digitally or with a putty-like material. Before your office visit ends, a temporary filling will be attached to your tooth to protect it until the permanent restoration is ready.
Inlays and onlays are strong, long-lasting, and require no greater level of care than any other tooth. Daily brushing and flossing, and regular professional cleanings are the best way to maintain your Inlay and onlay.