When a filling is not enough — but a crown may be more than you need.
When a tooth needs more support than a filling can provide, the right answer isn't always the most aggressive one.
An option that often gets skipped.
Many patients are told they need a crown when an old filling breaks, when decay returns, or when a tooth becomes weakened over time.
Sometimes a crown is the right answer. But in selected cases, an inlay or onlay may restore the tooth while preserving more healthy tooth structure — sitting between a filling and a full crown in both how much it covers and how much of the tooth has to be reshaped to receive it.
The goal is not to default to the most aggressive option. The goal is to match the restoration to what the tooth actually needs.
Custom restorations, made to fit.
Inlays and onlays are custom-made restorations that fit into or over part of a damaged tooth. Unlike a filling, which is placed directly into the tooth, an inlay or onlay is fabricated separately and then bonded into place — allowing for greater precision in both strength and shape.
Fits within the tooth
Used when the damage is contained within the chewing surface of the tooth — between the cusps, not over them.
Covers one or more cusps
Used when one or more cusps of the tooth need to be rebuilt or protected — covering more area than an inlay, but less than a full crown.
Inlays and onlays require more precision in their design and more careful cementation than a standard filling. The fit must be exact, and the bonding technique must be thorough — which is part of why these restorations, when properly done, can provide such reliable long-term support.
- A large old filling
- Recurrent decay around a previous restoration
- A cracked or weakened area
- Broken cusps
- More damage than a simple filling can address
- Enough healthy structure to avoid a full crown
When a filling becomes too large, it may not provide enough strength — and replacing one large filling with another may increase the risk of future fracture or leakage. An inlay or onlay can provide better support while preserving more natural tooth structure than a crown.
Three options. One right answer for your tooth.
The decision depends on how much healthy tooth structure remains — not on a default protocol.
Filling
For smaller areas of decay or damage
The most conservative option. A direct composite filling is placed into the tooth and shaped in a single visit. Appropriate when the damaged area is small and most of the natural tooth structure remains intact.
Inlay or Onlay
When the tooth needs more support
Custom-fabricated and bonded into place. Appropriate when a filling is no longer enough — but enough healthy tooth structure remains to avoid the more aggressive reshaping that a crown requires.
Crown
For more extensive damage
Covers the entire visible portion of the tooth. Appropriate when the tooth is extensively damaged, cracked through, or too weakened to be supported by a partial restoration.
The goal is to choose the most appropriate restoration for the tooth — not automatically the most aggressive one.
When you've already been told you need a crown.
Sometimes patients come in with a treatment plan from another office that recommends a crown — and they want a second look before moving forward. We welcome that conversation.
A second opinion is not a contradiction. It is a careful look at the same tooth, with the same goal: to choose the restoration that gives you the best long-term outcome with the least removal of healthy tooth structure.
Sometimes that second look confirms the original recommendation. Sometimes it reveals an option in between — an inlay or onlay that does the job without reshaping the entire tooth.
The most appropriate restoration is the one that matches the actual condition of the tooth. Not simply the one that is most familiar or fastest to complete.
If you have been told you need a crown and want a second opinion, call our office. We will take a careful look together.
What patients ask most often.
Is an onlay the same as a crown?
No. A crown covers the entire visible portion of the tooth. An onlay covers only the damaged or weakened portion — preserving more of the natural tooth structure when that is appropriate.
When is an inlay or onlay better than a filling?
When a tooth needs more support than a filling can reliably provide — but still has enough healthy structure that a full crown isn't necessary. The decision is based on how much of the original tooth remains.
Are inlays and onlays cosmetic?
They are primarily restorative, but they can also improve appearance by replacing old, dark, or broken fillings with restorations that blend naturally with the surrounding teeth.
Do inlays and onlays protect teeth?
When properly planned, they can strengthen and protect the tooth — particularly when an existing filling has become too large to do the job on its own.
Can I get a second opinion before agreeing to a crown?
Yes. If another office has recommended a crown and you want a careful second look, call our office to schedule a consultation. Sometimes the original recommendation is the right one. Sometimes a more conservative option exists.
The right restoration starts with a careful look.
If you have a broken filling, a cracked tooth, or a treatment plan you want a second opinion on — call our office. We will take the time to evaluate it properly.
Dr. Dulay & Associates P.A. · Tamarac, FL