Introduction
The disadvantages of dental crowns include potential tooth sensitivity, risk of crown failure, gum irritation, and the possibility that the underlying tooth may still develop decay. While dental crowns are an effective and commonly used restorative treatment, they are not perfect or permanent.
At Revesby Dental Centre, we believe in transparent patient education. Dental crowns can save and strengthen damaged teeth, but understanding the risks of getting a dental crown helps you make informed decisions. In this comprehensive guide, we will explain
- Common problems with dental crowns
- How long do dental crowns last
- Can a dental crown fail
- Long term maintenance considerations
- Situations where a crown may not be the best option
This article provides direct answers first, followed by detailed clinical explanations based on real patient cases.
What Are the Main Disadvantages of Dental Crowns
Direct Answer
The main disadvantages of dental crowns include irreversible tooth reduction, potential sensitivity, risk of decay under the crown, and eventual replacement costs.
Key Drawbacks
- Permanent removal of natural tooth structure
- Possible post treatment sensitivity
- Risk of crown loosening or fracture
- Higher cost compared to fillings
- Replacement required after wear
Although crowns are often necessary, it is important to understand these factors before proceeding.
Irreversible Tooth Reduction
What This Means
To place a crown, the tooth must be reshaped. This process removes enamel permanently.
Why It Matters
- The tooth can never return to its original form
- Future restorations may be required
- The tooth becomes dependent on the crown for protection
In many cases, this is unavoidable. However, we always assess whether a filling or onlay may preserve more natural structure before recommending a full crown. You can explore our restorative approach on our crown treatment page.
Tooth Sensitivity After a Crown
Direct Answer
Some patients experience temporary sensitivity to hot or cold after crown placement.
Why It Happens
- Nerve irritation during preparation
- Inflammation of the pulp
- Bite adjustment sensitivity
In most cases, this resolves within weeks. However, in rare situations, root canal treatment may be required if nerve inflammation persists.
According to Healthdirect Australia’s dental crown procedure overview, mild discomfort after crown placement is common but usually temporary.
Risk of Decay Under the Crown
Direct Answer
Yes, a tooth under a crown can still develop decay if oral hygiene is inadequate.
How This Happens
- Plaque accumulates at the crown margin
- Bacteria enter microscopic gaps
- Secondary decay develops beneath the restoration
This is one of the most misunderstood problems with dental crowns. The crown itself cannot decay, but the natural tooth underneath can.
Regular checkups at Revesby Dental Centre allow early detection of margin issues before serious damage occurs.
Can a Dental Crown Fail
Direct Answer
Yes, a dental crown can fail due to fracture, loosening, decay underneath, or trauma.
Common Causes of Failure
- Heavy grinding
- Poor oral hygiene
- Cement breakdown
- Cracked underlying tooth
- Impact injury
When patients ask can a dental crown fail, the honest answer is yes. No dental restoration lasts forever.
How Long Do Dental Crowns Last
Direct Answer
Most dental crowns last between 10 and 15 years, but some last much longer with proper care.
Factors That Affect Longevity
- Crown material
- Bite forces
- Oral hygiene habits
- Regular dental monitoring
- Smoking or health conditions
The Australian Dental Association restorative dentistry resources emphasise maintenance and monitoring as critical for long term success.
Gum Irritation and Inflammation
Why It Occurs
- Crown margin placed too close to gum tissue
- Rough surface texture
- Poor cleaning technique
Symptoms may include
- Redness
- Bleeding
- Swelling
Precision fit and proper finishing reduce this risk significantly.
Bite Problems After Crown Placement
Direct Answer
If a crown is not properly adjusted, it can cause bite imbalance and jaw discomfort.
Signs of Bite Issues
- Feeling of high tooth
- Jaw pain
- Headaches
- Tooth sensitivity when chewing
At our clinic, we carefully adjust and verify bite alignment to minimise this risk.
Aesthetic Limitations
Not all crowns achieve perfect cosmetic results.
Potential concerns include
- Slight colour mismatch
- Opaque appearance in some materials
- Gum recession revealing margins over time
We discuss aesthetic expectations in detail before treatment.
You can learn more about our philosophy and experience on our About Us page.
Cost as a Long Term Disadvantage
Direct Answer
Crowns require replacement over time, meaning additional future costs.
While a crown may last 10 to 15 years, eventual replacement should be anticipated.
However, delaying treatment for a severely damaged tooth may result in extraction and implant placement, which can cost significantly more.
Risks of Getting a Dental Crown
Summary of Risks
- Nerve irritation
- Secondary decay
- Crown fracture
- Gum inflammation
- Need for root canal treatment
- Eventual replacement
While these risks exist, careful case selection and quality materials significantly reduce complications.
Real Clinical Examples
Case Example 1
A patient delayed replacing a cracked crown for several years. Decay developed underneath, leading to extraction. Early intervention could have preserved the tooth.
Case Example 2
Another patient experienced sensitivity for three weeks after crown placement, which resolved without further treatment.
Transparency about risks helps patients set realistic expectations.
When a Crown May Not Be the Best Option
Sometimes alternatives may be more conservative
- Inlays or onlays
- Large composite fillings
- Veneers for cosmetic cases
Our goal at Revesby Dental Centre is always to preserve natural tooth structure where possible.
If you are unsure whether a crown is necessary, you can contact our team for a personalised assessment.
Conclusion
Understanding the disadvantages of dental crowns allows you to make informed and confident decisions about your oral health. While crowns are highly effective at restoring damaged teeth, they involve permanent tooth preparation, potential sensitivity, and eventual replacement.
The key is proper case selection, quality materials, and ongoing maintenance. When placed and maintained correctly, crowns can provide many years of reliable function.
If you are considering a crown or have concerns about an existing one, we invite you to schedule a consultation at Revesby Dental Centre or contact our team today for personalised advice.
Protect your smile with informed decisions and expert care.
Quick Answers FAQ
What are the disadvantages of dental crowns
They require permanent tooth reduction, can develop decay underneath, and may need replacement over time.
Can a dental crown fail
Yes, due to fracture, loosening, or decay under the crown.
How long do dental crowns last
Typically 10 to 15 years with proper care.
Are dental crowns risky
They are generally safe but carry manageable risks like sensitivity or gum irritation.
Do crowns require maintenance
Yes, regular brushing, flossing, and dental checkups are essential.
