We get it, having a damaged or decayed tooth can be a little worrying. You might be wondering: Is this tooth too far gone? Can it be saved? Or is it time for something more drastic, like an extraction or implant? One of the most common ways to restore a compromised tooth is with a dental crown. But just how bad can a tooth be and still get a crown? It’s a great question, and the answer isn’t always simple. Let’s explore what makes a tooth suitable for a crown and when your dentist might suggest alternative treatments.
What Is a Dental Crown, Exactly?
A dental crown is a customised cover or “cap” that fits snugly over a natural tooth to restore its shape, strength, and appearance. It’s typically recommended when a tooth is damaged, decayed, cracked, or weakened from previous dental work.
Crowns are crafted from materials like porcelain, ceramic, or metal and are designed to resemble the look and feel of a natural tooth. Once bonded with dental cement, they provide durable protection and help restore full function.
How Much Tooth Structure Is Needed for a Crown?
Dentists often look for at least 1.5–2 mm of remaining tooth structure to provide a stable base. If there aren’t enough tooth, don’t stress, your dentist can often rebuild the foundation using composite resin or a metal post placed in the root canal system for added internal support.
When Can a Damaged Tooth Still Be Crowned?
Now, let’s talk about the tooth itself. Even a severely damaged tooth might still be a good candidate for crown restoration if certain conditions are met. Here are some examples:
Cracked or Chipped Teeth
Mild to moderate cracks or chips can usually be repaired with a crown. If the damage reaches the dental pulp, a root canal may be needed first.
Large Fillings or Extensive Decay
If a decayed tooth has lost a lot of structure, but the natural root is still healthy, a crown can often be placed with the help of a build-up.
After a Root Canal
A tooth that’s had a root canal treatment becomes more fragile. Crowning is usually the next step to protect the remaining tooth structure and prevent fractures.
When Is a Tooth Too Far Gone?
Unfortunately, there are times when a dental crown won’t be enough. If the tooth remaining is below the gumline or the natural root is compromised, your dentist may suggest tooth replacement options instead.
Red flags that a tooth may not be savable include:
- A vertical crack through the root
- Severe infection in the dental pulp or surrounding bone
- Insufficient remaining tissue for a crown to grip
In these cases, extracting the tooth and considering a dental implant or dental bridge may be the better long-term option.
Alternatives If a Crown Isn’t an Option
Dental Implant
This involves placing an artificial tooth root (usually titanium) into the jawbone. A crown is then attached to the implant, offering a strong, natural-looking replacement for a missing tooth.
Dental Bridge
A dental bridge uses two crowns on the surrounding teeth to hold an artificial tooth suspended in the gap. It’s fixed in place and can restore both function and appearance.
What’s Involved in the Dental Crown Procedure?
Here’s a quick look at what to expect when getting a crown:
Initial Examination: Your dentist checks the affected tooth and evaluates if there’s enough tooth structure. X-rays may be taken to examine the root and surrounding teeth.
Tooth Preparation: The tooth is reshaped, and any decayed tissue is removed. If needed, composite resin or a metal post is added to support the crown.
Temporary Crown: A temporary crown is fitted, while the permanent one is custom-made.
Permanent Crown Placement: The final crown is bonded with dental cement and adjusted to fit comfortably.
Why Crowns Matter for Your Oral Health
Dental crowns work to protect teeth from further damage and keep your bite aligned. They also help maintain the integrity of your other teeth, especially if a tooth is weakened or has had extensive work.
Benefits of crowns include:
- Preventing fractures in compromised teeth
- Restoring chewing and speaking ability
- Enhancing the natural appearance of your smile
- Supporting healthy teeth by distributing bite pressure evenly
Final Thoughts: When in Doubt, Ask Your Dentist
If you’re unsure about the state of your existing tooth, book a consultation with MyHM Dentist at (02) 9158 6379. Whether it’s a crown, dental implant, or dental bridge, your dentist can guide you toward the best solution for your smile and your oral health.
Note: Any surgical or invasive procedure carries risks. Before proceeding, you should seek a second opinion from an appropriately qualified health practitioner.
References
- Cleveland Clinic. (n.d.). Root canal. https://my.clevelandclinic.org/health/treatments/21759-root-canal
- WebMD. (n.d.). Dental crowns. https://www.webmd.com/oral-health/dental-crowns
