Partial Vs Full Coverage Crowns
Full coverage crowns cover the entire surface of a tooth, restoring the function of the tooth by acting like a natural tooth. Partial crowns, also known as inlays and onlays, cover only a portion of a tooth. Several factors are considered when deciding between full coverage crowns and partial crowns, though the extent of damage to the tooth is the most significant factor. When a large portion of the tooth is damaged, a full coverage crown is the best way to protect the tooth and support its structure and function. When decay or damage is contained to a smaller area of the tooth, partial crowns are often sufficient.
An inlay is a partial crown that is situated within the grooves of a tooth’s surface, while an onlay is placed over the cusp or cusps of the tooth. Inlays and onlays are used to repair a tooth that has a large filling or has otherwise sustained damage to its structure, filling in damaged areas with tooth-colored material and, in the case of onlays, repairing damaged tooth cusps. Minimal areas of dental tissue require preparation before placing inlays or onlays. In order to place a full coverage crown, however, the entire surface of the natural tooth must be prepared, which involves shaving away a thin amount of dental tissue from the tooth to accommodate the crown. As the goal of any restoration is to maintain as much of the natural dental tissue as possible, when an inlay or onlay is sufficient to repair damage, it’s preferable to avoid more extensive methods like full crowns. Neither inlays nor onlays are considered permanent restorations, though each can last several years when cared for properly.
Crowns are much more durable and protective than inlays or onlays, making them an ideal solution for teeth that are significantly damaged or dangerously weak. Inlays and onlays create a good compromise for teeth that are slightly less damaged, preventing further damage and protecting tissues while retaining the optimal amount of healthy dental tissue. The function of the tooth is also considered when deciding between a partial crown and a full crown. When the tooth is involved substantially with chewing otherwise supporting considerable force, a crown’s strength might be preferred. On the other hand, teeth that support only mild or moderate biting and chewing forces can often be sufficiently protected and reinforced with inlays or onlays.
Traditionally, full coverage crowns have provided greater aesthetic benefits than inlays or onlays. Of course, it’s easier to match an entire tooth to its neighbors than it is to perfectly blend the inlay or onlay with the tooth itself, though consistent advances in dental technology continue to create materials that are more realistic and aesthetic than ever before. It’s also important to consider that full coverage crowns cost more than inlays and onlays, making the conservative approach even more appealing when budget is a concern. You and your dentist can discuss your clinical and budgetary needs and preferences at your consultation, and you can take the first step toward an informed decision. Trust your dentist to answer whatever questions you might have and guarantee you’re comfortable throughout the procedure and, more importantly, satisfied with the results.
Related Article: What is a Full Coverage Crown?