Partial vs Full Coverage Crowns
It is crucial for your dentist to evaluate the condition of your damaged tooth and consider several factors when determining whether a full coverage crown or partial coverage, an inlay or onlay, is the best solution. Each restoration has its own benefits. The choice will depend on your specific clinical situation.
The Extent of Tooth Damage
The amount of damage to your tooth is a critical factor in choosing the appropriate restoration. A full coverage crown is used when a significant part of the tooth has been compromised or damaged, such as extensive decay, fractures, or even a large filling. The full coverage crown covers the entire part of the tooth visible above the gumline, providing both maximum protection and support for the weakened tooth. In comparison, inlays and onlays are often used for more conservative solutions when the damage is limited to a smaller portion of the tooth. An inlay is placed within the grooves of the surface of the tooth, while an onlay will extend up and over one of the cusps of the tooth.
Preservation of Tooth Structure
Preserving natural tooth structure is a fundamental principle in the entire field of dentistry. In some cases, a partial coverage solution such as an inlay or onlay is preferred because its application requires minimal reduction of the healthy tooth structure. With a full coverage crown restoration, the damaged tooth must be reduced in size to allow for the actual thickness of the restoration, requiring more aggressive enamel removal. Partials are more conservative and will provide preservation of the tooth’s natural integrity.
Strength and Durability
Full coverage crowns provide superior strength and durability compared to partials. Since the crown completely covers the entire tooth, it provides excellent protection and support, making it perfect for seriously damaged or weakened teeth. Partials are more appropriate for moderately damaged teeth since they provide a good balance between adding strength and preserving the tooth structure.
Aesthetic Considerations
For a tooth in the natural aesthetic zone, which are your front teeth visible during a smile, the decision between using a full coverage crown or a partial might be influenced by your desired cosmetic goal. Full coverage crowns can be crafted from various materials, including all-ceramic options, which closely match your natural tooth color, delivering excellent aesthetics. Continued advancements in technology have made it possible to create aesthetically pleasing partials that will also blend with your natural tooth color.
Tooth Function
The functionality of a weakened tooth is critical when choosing either a full coverage crown or a partial. If the tooth is subjected to extensive chewing forces or is necessary to support a dental bridge, a crown will be the preferred choice for its superior strength. Partial inlays or onlays are a better choice for a tooth with just moderate chewing forces, as they provide sufficient reinforcement while still preserving more of your natural tooth structure.
Your Preference and Your Budget
As with many dental treatments, both your preference and your budget will be considered. Full coverage crowns will be more expensive than a partial because of the extent of the procedure and the materials used. You may prefer a more conservative approach if your budget is an issue, with an inlay or onlay a viable option for you.
Related Article: What is a Full Coverage Crown?