Porcelain inlays in the connection is often the use of the best adhesive, is the resin-based adhesive, because the porcelain inlays are relatively poor retention, in the removal of the time will often encounter some difficulties, is too firm sticky. If the porcelain inlays need to be removed soon after the adhesion, basically the use of abrasive methods, but porcelain inlays often have some form of pulpal fixation, that is, in the process of abrasion will require the use of a large number of needles, in the pulpal cavity, in a relatively dark environment for removal, so it takes a lot of time. If, after the removal with the lancet, it is found to be very good, it may be necessary to add ultrasound to assist in the removal. Therefore, it is also possible that the inlay removal process may cause some damage to the tooth, and in some cases may even cause the crown and root to fracture. Since the removal of porcelain inlays is so difficult, I hope that patients must try to protect the restoration during use and should not remove it as a last resort.