What Is the Difference Between a Cap and a Crown?

When it comes to restoring damaged or decayed teeth, dental professionals often use terms like cap and crown interchangeably. However, many patients are left wondering: What is the difference between a cap and a crown? Are they two different dental procedures, or are they simply two names for the same thing?

In this detailed and informative blog, we will clarify the difference (if any) between a cap and a crown, when they are used, and how they benefit oral health.

What Is a Dental Cap?

A dental cap is essentially a layman’s term for a dental crown. It is commonly used by non-dental professionals or patients when referring to a restoration that covers a damaged or decayed tooth. The term “cap” comes from the concept of capping or covering a tooth to protect it from further damage.

So, to put it simply: A cap and a crown are the same things. Dentists use the term crown, while many patients still refer to it as a cap.

Purpose of a Dental Cap (Crown)

A dental cap is designed to:

• Restore a damaged tooth’s shape, size, and strength.
• Enhance the tooth’s appearance.
• Protect a weakened tooth from further decay or fracture.
• Cover dental implants, large fillings, or a root canal-treated tooth.

Now that we’ve established that a cap and a crown are the same, let’s dive deeper into the purpose, materials, and types of dental crowns.

What Is a Dental Crown?

A dental crown is a tooth-shaped, custom-made cap that covers the entire visible part of a damaged or decayed tooth. It serves to restore the tooth’s functionality, strength, and appearance. Dentists primarily use the term crown in professional settings, while patients may casually refer to it as a cap.

Dental crowns are designed to mimic the natural appearance of your teeth while providing protection and stability.

When Is a Dental Cap (Crown) Needed?

Your dentist may recommend a dental crown (or cap) in the following situations:

1. Large Cavities or Tooth Decay

If you have a large cavity that cannot be treated with a regular dental filling, a crown (cap) is used to cover and protect the tooth. This prevents further decay and restores normal tooth function.

2. Root Canal Treatment

After a root canal treatment, the tooth becomes brittle and prone to fractures. A dental crown is placed over the treated tooth to restore its strength and function.

3. Broken, Fractured, or Cracked Tooth

If you have a cracked or fractured tooth, a dental crown can hold the tooth together and prevent it from breaking further.

4. Cosmetic Improvement

A dental crown can be used to improve the appearance of a discolored, misshapen, or misaligned tooth. Crowns provide a natural, aesthetically pleasing look.

5. Dental Implants

For individuals who have undergone dental implant surgery, a crown (cap) is placed on top of the implant to replace the missing tooth.

6. Tooth Wear Due to Grinding or Erosion

Patients who suffer from bruxism (teeth grinding) or severe enamel erosion may require dental crowns to restore the natural shape and functionality of their teeth.

Types of Dental Crowns (Caps)

Dental crowns come in various materials, and the choice depends on durability, aesthetics, and budget. Here are the most common types of crowns:

1. Porcelain Crowns

• Highly aesthetic and natural-looking.
• Commonly used for front teeth.
• Matches the color of natural teeth.
• Slightly less durable than metal crowns.

2. Metal Crowns (Gold or Silver)

• Extremely durable and long-lasting.
• Ideal for molars (back teeth) where chewing pressure is high.
• Not as aesthetically pleasing.

3. Porcelain-Fused-to-Metal (PFM) Crowns

• Combines the strength of metal with the aesthetics of porcelain.
• Provides a natural look with high durability.
• Suitable for front and back teeth.

4. Zirconia Crowns

• Exceptionally durable and strong.
• Highly aesthetic and resembles natural teeth.
• Resistant to chipping or cracking.

5. Resin Crowns

• Less expensive than other materials.
• Ideal for temporary crowns.
• Not as durable for long-term use.

Is There Any Difference Between a Cap and a Crown?

No, there is no difference between a cap and a crown. The term cap is a colloquial term used by patients to describe the same thing that dentists refer to as a crown. Both terms describe the same dental restoration designed to cover and protect a damaged tooth.

However, the confusion often arises due to the different contexts in which the terms are used:

• Patients: Often refer to it as a “cap” because it covers the tooth like a hat.
• Dentists: Use the professional term “crown” in clinical settings.

Regardless of the term, the function and purpose remain the same.

How Long Do Dental Caps (Crowns) Last?

The lifespan of a dental crown depends on several factors, including the material used, oral hygiene, and general dental care. On average:

• Porcelain crowns: Last 10-15 years with proper care.
• Metal crowns: Last 15-20 years or more.
• Zirconia crowns: Can last over 20 years.

Good oral hygiene and regular dental visits significantly increase the lifespan of your dental crown.

Conclusion

So, what is the difference between a cap and a crown? Nothing! A cap and a crown are simply two different terms for the same dental restoration. While patients often use the term “cap,” dental professionals refer to it as a crown. Regardless of what you call it, its primary purpose remains the same: to restore and protect your damaged tooth.