Many patients do not understand why they need to do inlays or full crowns to protect the tooth after root canal treatment, when the tooth does not hurt anymore and can just be filled, and they think it is unnecessary. In fact, after root canal treatment, the tooth has lost its vitality and self-protection ability without the pulp, it will become dark and brittle, and the remaining part of the crown will easily break and split, resulting in a reduced service life of the tooth. Onlays What are inlays? An inlay differs from a traditional filling in that it is made by a specialized dental technician on an extra-oral plaster model, which is then placed in the patient’s mouth by the clinician and eventually cemented in place. The advantage of inlays is that the entire fabrication process avoids the distraction of working inside the mouth. This makes the fabrication of inlays more delicate than traditional fillings. The technician will control the fit of the inlay, thus avoiding as much as possible the recurrence of tooth decay in the future. Another advantage of inlays is that because the entire process is done outside the mouth, they can also restore the shape of the original tooth and restore the chewing efficiency of the original tooth. This is something that traditional fillings cannot match in any way. The porcelain inlay restoration method used can preserve the maximum amount of autogenous teeth, repair defects, achieve aesthetic and practical in one, and prolong the life of the teeth. Crown restoration Depending on the patient’s situation, crown restoration is also an option, which will not be explained here.