Dental Crowns vs Fillings: Which Is Right for You?
Both crowns and fillings restore damaged teeth — but the right choice depends on the extent of the damage and the strength your tooth needs. Understanding the difference helps you feel more confident about your care.
When a tooth is damaged by decay, wear, or trauma, you may be wondering whether a white filling in London or a dental crown in London is the better option. Both are effective solutions — but they are designed for different situations.
This guide explains the key differences between dental crowns and fillings — covering coverage, strength, cost, and longevity — so you can understand which approach may be most appropriate for your tooth. The right option will always depend on a thorough clinical assessment by your dentist.
The information on this page is for general guidance only. Treatment suitability, outcomes, and costs vary between individuals. A clinical examination is necessary before any treatment can be recommended.
Dental Crowns vs Fillings: Side-by-Side
A quick overview of the key differences between dental crowns and composite fillings.
| Feature | Dental Crown | Composite Filling |
|---|---|---|
| Coverage of Tooth | Full coverage — encases the entire visible tooth | Partial — fills only the damaged or decayed area |
| Procedure Type | Restorative — custom-made laboratory restoration | Restorative — direct chairside repair |
| Treatment Time | Usually two appointments over 1–2 weeks | Typically completed in a single appointment |
| Structural Support | High — reinforces and protects weakened teeth | Moderate — suitable for smaller restorations |
| Aesthetics | Excellent — zirconia or porcelain shade-matched | Excellent — composite is tooth-coloured |
| Cost (UK Range) | From £995 | From £185 |
| Longevity | Typically 10–15+ years with good care | Typically 5–10 years depending on size and location |
| Suitability | Heavily damaged, weakened, or root-treated teeth | Small to moderate cavities and minor damage |
This table provides a general overview. The most suitable option depends on your individual clinical assessment.
What Are Dental Crowns?
A dental crown is a custom-made restoration that covers the entire visible portion of a tooth — like a protective cap. Crowns are used to restore damaged teeth with crowns that have been significantly weakened by decay, fracture, or following root canal treatment. They are typically made from high-quality materials such as zirconia or e-max porcelain, which are carefully shade-matched to blend with your natural teeth.
The crown is fabricated in a dental laboratory based on precise impressions of your tooth, ensuring an accurate fit. Treatment usually requires two appointments — one to prepare the tooth and take impressions, and a second to fit the permanent crown.
Potential Benefits
- Provides full coverage and structural reinforcement
- Protects weakened teeth from further fracture or damage
- Restores both function and natural appearance
- Highly durable — designed to withstand normal biting forces
- Can be used to support a dental bridge
Suitable Candidates May Include
- Patients with heavily decayed or broken teeth
- Those who have had root canal treatment and need protection
- Patients with large old fillings that need replacing
- Those with cracked teeth requiring full coverage restoration
Suitability depends on the extent of damage and the condition of the remaining tooth structure.
What Are Dental Fillings?
A dental filling is a direct restoration used to treat tooth decay with fillings — repairing a cavity or minor damage by filling the affected area with a tooth-coloured composite resin material. The filling is placed and shaped chairside in a single appointment, then hardened with a curing light.
Modern white composite fillings are mercury-free and designed to blend seamlessly with natural tooth enamel. They are an effective and affordable solution for restoring teeth with small to moderate cavities, chips, or wear. A dental examination for treatment planning will determine whether a filling is sufficient or whether a more extensive restoration is needed.
Potential Benefits
- Completed in a single appointment — no second visit needed
- Preserves more natural tooth structure than a crown
- Tooth-coloured — blends with your natural enamel
- Mercury-free and biocompatible material
- More affordable than crowns for smaller restorations
Suitable Candidates May Include
- Patients with small to moderate cavities from decay
- Those with minor chips or wear on a tooth
- Patients wanting to replace old amalgam (silver) fillings
- Those seeking an affordable, single-visit restoration
Your dentist will confirm whether a filling provides adequate support for your specific case.
How Do They Compare?
Understanding these differences helps clarify when a filling is sufficient and when a crown is the more appropriate choice.
Coverage and Strength
A filling restores only the damaged portion of a tooth, while a crown encases the entire visible structure. For teeth that have lost a significant amount of their natural form, a crown provides far greater structural reinforcement and protection against further fracture.
Tooth Preparation
Fillings require minimal preparation — only the decayed or damaged material is removed before the composite is placed. Crowns require more preparation, as the tooth must be reshaped to accommodate the restoration. However, this preparation is necessary to provide full-coverage protection.
Longevity
Dental crowns are generally expected to last longer than fillings — typically 10 to 15 years or more, compared to 5 to 10 years for composite fillings. Longevity depends on factors including bite forces, oral hygiene, and the size and location of the restoration.
Cost
Fillings are more affordable than crowns, making them a cost-effective option for smaller restorations. Crowns involve laboratory fabrication and additional appointments, which contributes to the higher cost — but they may prove more economical long-term for heavily damaged teeth.
Suitability Based on Damage
For small cavities and minor chips, a filling is typically all that is needed. For larger cavities, cracked teeth, or teeth weakened by root canal treatment, a crown is usually the more clinically appropriate option. Your dentist will assess the extent of the damage to determine the best approach.
Pros and Cons
Both serve an important role in restorative dentistry. Here is a balanced overview of each option.
Dental Crowns
Full-coverage restoration for damaged teeth
Pros
- Full coverage protects the entire tooth from further damage
- Highly durable — designed to last 10–15+ years
- Restores both strength and natural appearance
- Suitable for heavily damaged or root-treated teeth
- Can replace large failing fillings with a stronger solution
Cons
- Higher cost than a filling
- Requires more tooth preparation
- Usually needs two appointments to complete
- Involves a temporary crown between visits
- Not necessary for small cavities or minor damage
Dental Fillings
Direct repair for cavities and minor damage
Pros
- Affordable and cost-effective for smaller restorations
- Completed in a single appointment
- Preserves more natural tooth structure
- Tooth-coloured and mercury-free
- Effective for treating early to moderate decay
Cons
- Not suitable for heavily damaged or weakened teeth
- Shorter expected lifespan than crowns
- May chip, wear, or stain over time
- Large fillings are more prone to fracture under biting forces
Cost Comparison
Costs vary depending on the treatment needed and individual clinical factors.
Dental Crown
From £995
Per crown
The cost of a dental crown reflects the laboratory fabrication, high-quality materials (such as zirconia or e-max porcelain), and the two-appointment process. While the upfront cost is higher than a filling, crowns are designed for long-term tooth restoration and can provide many years of reliable function and appearance.
Final cost confirmed after consultation. Individual cases may vary.
Composite Filling
From £185
Per filling
Composite fillings are one of the most affordable restorative treatments available. They are an excellent choice for smaller areas of damage and can be completed in a single visit. The cost-effectiveness of fillings makes them an ideal solution when the extent of damage does not warrant a crown.
Final cost confirmed at your appointment. Larger restorations may cost more.
Final costs are confirmed after your consultation and clinical assessment. A full written estimate is always provided before treatment begins.
See full treatment feesWhich Option May Be Best for You?
Your dentist will recommend the most appropriate option based on a thorough clinical examination. These general scenarios may help guide your understanding.
Best for Minor Tooth Damage
If you have a small cavity, minor chip, or early-stage decay, a composite filling is usually the most appropriate and cost-effective option. It preserves the maximum amount of your natural tooth structure while effectively restoring the damaged area.
Best for Heavily Damaged Teeth
If a tooth has lost a significant amount of its structure — from a large cavity, fracture, or root canal treatment — a crown provides the full-coverage protection needed to prevent further breakdown. A filling alone may not be strong enough in these cases.
Best for Long-Term Durability
When longevity is a priority, dental crowns typically offer a longer expected lifespan. They are designed to withstand normal biting forces and protect the underlying tooth for many years, making them a sound investment for teeth that need significant restoration.
Best for Affordability
If cost is a key consideration and the damage to the tooth is relatively minor, a composite filling offers an effective and affordable solution. It can be completed in a single visit with no laboratory costs, making it the most budget-friendly option for suitable cases.
The Right Choice Starts with an Assessment
The decision between a crown and a filling is not one you need to make alone. During your dental examination, your dentist will assess the extent of the damage, the condition of the remaining tooth, and your overall dental health. They will then recommend whichever option — or combination of tooth repair options — is most clinically appropriate for your case.
Your dentist will recommend the most suitable restoration following a thorough clinical assessment.
Frequently Asked Questions
Not Sure Whether You Need a Crown or a Filling?
Book a consultation with one of our experienced dentists. Following a thorough clinical examination, your dentist will explain which option — a crown, a filling, or an alternative restoration — is most appropriate for your tooth and provide a full written estimate before any treatment begins.
This article is intended for general educational purposes only and does not constitute personalised dental advice. Individual diagnosis and treatment recommendations require a clinical examination by a qualified dental professional. Treatment outcomes, timelines, and costs vary between individuals. All treatments are provided by GDC-registered dental professionals at our CQC-registered practice.
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