A damaged, cracked, heavily decayed or weakened tooth does not always need to be removed. In many cases, a dental crown can protect the remaining tooth, restore its shape and allow you to chew normally again.
If your dentist has recommended a crown, you may naturally have questions: Will it hurt? How much will it cost? Will the tooth decay underneath it? Can I eat normally? Is zirconia better than PFM? And do I really need a crown after a root canal?
This guide explains dental crowns in simple language, including the procedure, different crown materials, expected costs, alternatives, risks, aftercare and answers to the questions patients commonly ask.
A dental crown is essentially a custom-made cap that fits over a prepared tooth. It can restore a tooth that has been weakened by decay, fracture, extensive fillings, wear or root canal treatment. Crowns can also be attached to dental implants or used as part of a bridge
What Is a Dental Crown?
A dental crown, sometimes called a tooth cap, is a custom-made restoration that covers most or all of the visible portion of a damaged tooth.
Think of it as a protective helmet for a weakened tooth. The dentist first removes damaged tooth structure and carefully reshapes the remaining tooth. The crown is then manufactured to fit over it and is permanently cemented or bonded into place.
Crowns are generally considered when a filling alone cannot provide enough strength or when a tooth needs full-coverage protection. They may be recommended for:
- Severely decayed teeth
- Cracked or fractured teeth
- Teeth with large fillings
- Worn-down teeth
- Teeth that have undergone root canal treatment
- Certain severely discoloured or misshapen teeth
- Teeth supporting a dental bridge
- Dental implants
The goal isn’t simply to make a tooth look better. A properly designed crown should restore strength, chewing function, shape and appearance while helping preserve the remaining natural tooth.
Why Do Dentists Recommend Crowns?
A common misconception is that dentists recommend crowns simply because they are more expensive than fillings. That is not necessarily the case.
The decision should be based on how much healthy tooth structure remains, where the tooth is located, how much chewing force it receives and whether the tooth has been root canal treated.
For example, a small cavity may only require a filling. But if a molar has lost a large portion of its structure, placing another large filling may leave relatively thin walls that are vulnerable to fracture.
Similarly, a tooth that has undergone root canal treatment may require a crown when substantial tooth structure has been lost, particularly in back teeth that experience significant chewing forces.
A crown provides coverage and support that a conventional filling cannot always provide.
Why do dentists push for crowns?
Dentists should not recommend a crown automatically for every damaged tooth. However, they may strongly recommend one when they believe the remaining tooth is structurally vulnerable.
A good dental consultation should explain:
- Why a crown is necessary
- How much healthy tooth remains
- Whether a filling, inlay or onlay could work instead
- Whether root canal treatment is required
- Which crown material is appropriate
- The expected cost and longevity
- What could happen if treatment is delayed
If you’re unsure, asking for an explanation or a second opinion is completely reasonable.
What Are the Three Types of Dental Crowns?
There are actually more than three types of dental crowns, but three commonly discussed categories are:
1. Metal Crowns
Metal crowns can withstand substantial chewing forces and are particularly useful for back teeth.
Their biggest disadvantage is obvious: they don’t look like natural teeth.
2. Porcelain-Fused-to-Metal (PFM) Crowns
PFM crowns have a metal core covered with tooth-coloured porcelain.
They offer a balance between strength and appearance, although the porcelain layer can chip over time. In some situations, a dark metal margin may become visible near the gumline as the gums change.
3. All-Ceramic Crowns
All-ceramic crowns are made without a metal framework and can provide excellent aesthetics.
Zirconia is one of the most widely used ceramic materials because of its high strength. Other ceramic options, including lithium-disilicate or E-max, can provide excellent translucency and a natural appearance.
Modern dentistry therefore offers several materials, and the best option depends on the particular tooth rather than simply choosing the most expensive crown.
Which Type of Crown Is Better?
There is no single crown that is “best” for everyone.
The ideal material depends on:
- Whether it is a front or back tooth
- The amount of chewing force
- How much natural tooth remains
- Your bite
- Your cosmetic expectations
- Whether you grind or clench your teeth
- Your budget
- The condition of the gums
- The dentist’s restorative plan
For example, zirconia may be an excellent choice when you want a strong, metal-free restoration. E-max/lithium-disilicate can be particularly attractive for some visible front teeth because of its optical properties. PFM can provide a practical balance between aesthetics and strength, while metal remains extremely durable for appropriate back-tooth situations.
The American Dental Association notes that different indirect restorative materials have different survival and failure patterns, reinforcing the importance of matching the material to the clinical situation rather than assuming one material is universally superior.
Dental Crown Procedure: What Happens?
A conventional dental crown usually involves one or two main appointments.
Step 1: Examination
Your dentist examines the tooth and may take an X-ray to assess decay, the root and surrounding structures.
If the tooth has an infection affecting the pulp, root canal treatment may be necessary before the crown.
Step 2: Tooth Preparation
The dentist removes damaged areas and reshapes the tooth so there is sufficient space for the crown.
The amount removed depends on the crown material and the clinical requirements.
Step 3: Impression or Digital Scan
Your dentist takes either a traditional impression or a digital scan of the prepared tooth and surrounding teeth.
The information is used to manufacture the permanent crown.
Step 4: Temporary Crown
If the permanent crown is being made in a laboratory, a temporary crown may be placed to protect the prepared tooth.
Step 5: Permanent Crown Fitting
At the next appointment, the temporary crown is removed. Your dentist checks the permanent crown’s:
- Fit
- Shape
- Colour
- Contacts with neighbouring teeth
- Bite
Once everything is satisfactory, the crown is permanently cemented or bonded.
Some practices also offer same-day crowns using CAD/CAM technology, although this isn’t suitable for every patient or every clinical situation.
Is It Painful to Get a Crown?
Getting a crown is generally not painful because local anaesthesia can be used during tooth preparation.
You may feel pressure, vibration or movement, but you shouldn’t have to tolerate significant pain. If the tooth is sensitive or the procedure is uncomfortable, tell your dentist so additional anaesthesia can be provided.
Some sensitivity or gum soreness after treatment is possible. This usually settles, but persistent or severe pain should be evaluated by your dentist.
Do You Need Anesthesia for a Crown?
Usually, local anaesthesia is used when the dentist prepares a vital tooth for a crown, particularly if drilling close to sensitive tooth structure.
If the tooth has already undergone root canal treatment, the nerve inside the tooth has been removed, so anaesthesia may not be necessary for the tooth preparation itself. However, the dentist may still use local anaesthetic if the gums or surrounding tissues need treatment.
The exact approach depends on the tooth and procedure.
How Much Tooth Is Left Under a Crown?
A crown does not replace the entire natural tooth.
The dentist preserves as much healthy tooth structure as possible while removing enough damaged structure and enamel to create space for the crown.
The amount of tooth remaining varies enormously from patient to patient. A tooth may have substantial natural structure left, while another may require a build-up because extensive decay or fracture has removed much of the original tooth.
If there is insufficient structure above the gum to retain a crown safely, your dentist may discuss additional procedures or alternative treatment.
How Long Do Crowns Last on Teeth?
A dental crown does not last forever.
A commonly quoted average lifespan is around 5 to 15 years, although well-made crowns can last considerably longer with appropriate care. Cleveland Clinic notes that some crowns can last upwards of 30 years, but replacement may be necessary sooner if the crown becomes damaged or the underlying tooth develops problems.
Longevity depends on:
- Crown material
- Quality of preparation and fitting
- Oral hygiene
- Gum health
- Tooth location
- Bite forces
- Teeth grinding or clenching
- Diet and habits
- Recurrent decay
Regular dental check-ups can help identify problems before they become serious.
What Happens to Crowns After 20 Years?
After 20 years, a crown may still be functioning perfectly—or it may need replacement.
Age alone does not automatically mean a crown has failed.
Your dentist may recommend replacement if there is:
- A fracture or chip
- Loss of retention
- Recurrent decay
- Gum problems
- Poor fit
- Significant wear
- Changes in the supporting tooth
- Problems with the bite
In some cases, an old crown can remain clinically acceptable for many years beyond the commonly quoted lifespan.
Do Teeth Go Bad Under Crowns?
Yes, they can.
The crown itself cannot develop a cavity in the way natural tooth enamel can, but the natural tooth underneath or around the crown can still develop decay.
Plaque can accumulate around the crown margin, especially when brushing and flossing are inadequate. If bacteria gain access around a poorly fitting or damaged restoration, recurrent decay can develop.
This is why a crown should not be considered a substitute for oral hygiene.
Brush twice daily with fluoride toothpaste, clean between your teeth every day and attend regular dental check-ups.
Can a Cavity Be Filled Under a Crown?
Sometimes, but not usually without accessing the affected area.
If decay develops underneath an intact crown, the dentist first needs to determine its location and severity. Depending on the situation, treatment might involve accessing the tooth through the crown, removing the crown, repairing the tooth and then placing a new restoration.
If the decay has reached the pulp, root canal treatment may be necessary.
The important point is that a cavity under a crown should not simply be ignored.
Can a Dentist Remove a Crown Without Damage?
A dentist can remove a crown, but whether it can be removed intact depends on how it was made, how it was cemented and the condition of the underlying tooth.
Sometimes a crown can be removed relatively conservatively. In other cases, the dentist has to cut the crown into sections to safely remove it.
Trying to remove a permanently cemented crown at home is not safe and can damage the tooth or surrounding tissues.
How Much Is 1 Crown of Teeth?
There is no single nationwide price for a dental crown in India.
The cost depends primarily on the material, laboratory, dentist, tooth location, complexity and whether additional treatment is required.
As an indicative Kolkata market range, published 2026 estimates vary substantially, with prices ranging from roughly ₹1,500 to ₹15,500 per tooth across crown types and providers. Individual clinic pricing can be outside this range, particularly for premium zirconia, high-end ceramic or specialist treatment.
For example, published Kolkata prices show PFM crowns starting around ₹6,000 at one clinic, zirconia around ₹10,000 and E-max around ₹12,000, while other providers quote substantially different rates.
Therefore, instead of asking only “How much is one crown?”, ask your dentist for a complete written treatment estimate that includes consultation, X-rays if required, tooth preparation, temporary crown, laboratory charges and final cementation.
Which Is Cheaper: A Crown or Root Canal?
This comparison can be misleading because a root canal and a crown do different jobs.
A root canal treats infection or inflammation inside the tooth. A crown restores and protects the tooth after substantial structural damage.
If a tooth needs both, the cost is cumulative rather than an either/or choice.
In Kolkata, published estimates for root canal treatment vary according to the tooth and complexity, while crown costs vary substantially by material.
A tooth requiring root canal treatment may subsequently need a crown, particularly when significant tooth structure has been lost.
What Is Worse: a Crown or Root Canal?
Neither is inherently “worse.” They address different problems.
A root canal treats disease or infection inside the tooth by removing the affected pulp and cleaning the root canal system.
A crown restores and protects the tooth after structural damage.
Some patients need both. In that situation, the root canal addresses the biological problem, while the crown helps protect the remaining tooth.
What Are the Risks of Getting a Crown?
Dental crowns are generally considered safe, but no dental procedure is completely risk-free.
Potential complications include:
- Temporary sensitivity
- Gum soreness or irritation
- Crown chipping or fracture
- Crown becoming loose
- Problems with the bite
- Recurrent decay around or underneath the crown
- Fracture of the underlying tooth
- Poor fit
- Rare material-related reactions
Healthdirect similarly lists crown loosening, fracture, pain from poor fit, gum problems, tooth fracture and decay around or under the crown as possible complications.
A crown also requires removal of some natural tooth structure. That is why a full-coverage crown should not be placed unnecessarily when a more conservative restoration can provide adequate strength and protection.
What Can Be Done Instead of a Dental Crown?
A crown is not always the only option.
Depending on how much healthy tooth remains, alternatives may include:
Dental Filling
Suitable for smaller cavities or areas where enough tooth structure remains.
Inlay or Onlay
An inlay or onlay may be appropriate when a tooth has more damage than can reliably be restored with a simple filling, but still has enough healthy structure to avoid a full crown.
An onlay can cover one or more cusps of the tooth.
Dental Bonding
Bonding may work for selected small chips or cosmetic concerns.
Veneers
Veneers cover mainly the front surface of a tooth and are primarily used for cosmetic concerns rather than severely weakened teeth.
Extraction and Replacement
If a tooth is too badly damaged to restore predictably, extraction followed by a bridge, denture or dental implant may be considered.
The appropriate alternative depends entirely on the condition of the tooth.
Can I Eat Normally With a Crown?
Yes, once your permanent crown has settled and your dentist has confirmed that the bite is comfortable, you can generally eat normally.
However, use some caution with extremely hard or sticky foods. Ice, very hard nuts, popcorn kernels and sticky sweets can potentially damage or dislodge a crown.
If you have a temporary crown, follow your dentist’s specific instructions because temporary crowns are not designed to withstand the same forces as permanent restorations.
How to Take Care of a Dental Crown
Caring for a crown is not complicated.
Brush twice a day
Use a soft-bristled toothbrush and fluoride toothpaste.
Clean between your teeth
Floss or use another dentist-recommended interdental cleaning method every day.
Avoid chewing extremely hard objects
Do not use your teeth to bite ice, open packages or crack hard objects.
Manage teeth grinding
If you clench or grind your teeth, ask your dentist whether a night guard is appropriate.
Keep regular dental appointments
Your dentist can examine the crown, gums and underlying tooth for early signs of problems.
When Should You Contact Your Dentist After Getting a Crown?
Contact your dentist if you experience:
- Persistent or worsening pain
- Severe sensitivity that doesn’t settle
- A crown that feels loose
- Difficulty chewing
- A crown that feels too high when you bite
- Bad taste or persistent bad breath
- Gum swelling
- A visible crack or chip
- The crown falling out
A new crown may feel slightly different initially, but significant or persistent discomfort deserves professional evaluation.
Dental Crown vs Filling: Which Is Better?
Neither is universally better.
A filling is generally more conservative because it preserves more natural tooth structure. It is appropriate when enough healthy tooth remains.
A crown provides much more coverage and protection, making it useful for teeth that are extensively damaged or structurally weakened.
The best restoration is the least extensive treatment that can reliably restore and protect the tooth.
Dental Crown vs Veneer
A crown covers most or all of the visible tooth, whereas a veneer generally covers only the front surface.
If your tooth is healthy but you want to change its colour or shape for cosmetic reasons, a veneer may be appropriate in selected cases.
If your tooth is structurally compromised, a crown may be more suitable.
Is a Dental Crown Permanent?
No.
A crown is intended to be a long-lasting restoration, not a lifetime guarantee.
Even an excellent crown can eventually need replacement because the crown can wear or fracture, the cement can fail, the gums can change, or the underlying tooth can develop decay.
The goal is to make the crown last as long as reasonably possible while maintaining the health of the natural tooth underneath.
Final Thoughts
A dental crown can be an excellent way to save and protect a damaged tooth, but it isn’t automatically the right solution for every dental problem.
The most important questions are not simply “Which crown is cheapest?” or “Which crown is strongest?” They are:
How much healthy tooth remains? What caused the damage? Is the tooth infected? What forces will it experience? And which restoration can protect it while preserving as much natural tooth structure as possible?
Metal, PFM, zirconia and all-ceramic crowns each have situations in which they can be useful. The best choice should be based on the individual tooth, your bite, your aesthetic expectations and your dentist’s clinical assessment.
If you’re considering a crown in Kolkata, get a proper examination and ask for a treatment plan that clearly explains the type of crown, total cost, expected lifespan, alternatives and whether root canal treatment is required.
Frequently Asked Questions About Dental Crowns
How long do crowns last on teeth?
A dental crown commonly lasts around 5–15 years, although some can remain functional for considerably longer with good oral hygiene, appropriate bite forces and regular dental care.
How much is 1 crown of teeth?
The price varies according to material and clinic. In Kolkata, published 2026 estimates range broadly from about ₹1,500 to ₹15,500 per tooth, with premium materials potentially costing more. Always obtain a clinic-specific quotation.
What are the three types of crowns?
Three commonly discussed categories are metal, porcelain-fused-to-metal (PFM), and all-ceramic crowns. Zirconia is a popular type of ceramic crown.
Is it painful to get a crown done?
The procedure itself is generally comfortable because local anaesthesia can be used. Some sensitivity or gum soreness may occur afterwards.
Do teeth go bad under crowns?
Yes. The crown itself doesn’t decay, but the natural tooth underneath or around its margins can develop decay.
Can I eat normally with a crown?
Yes. Once your permanent crown is properly fitted and any initial sensitivity has settled, you can generally eat normally. Avoid extremely hard or sticky foods that could damage it.
Which is cheaper, a crown or root canal?
They are different procedures and may both be necessary. A root canal treats the inside of an infected tooth, while a crown protects and restores the tooth.
Why do dentists push for crowns?
A dentist may strongly recommend a crown when a tooth has lost substantial structure and is at risk of breaking. However, a crown should be recommended based on clinical need, not simply because it is a higher-priced treatment.
How much tooth is left under a crown?
There is no fixed amount. The dentist preserves as much healthy tooth structure as possible while preparing enough space for the crown. Some teeth may require a build-up if significant structure has been lost.
What are the risks of getting a crown?
Possible risks include sensitivity, gum irritation, crown fracture or loosening, bite problems, recurrent decay and fracture of the underlying tooth.
Which type of crown is better?
There is no universal winner. Zirconia, E-max, PFM and metal crowns each have different advantages. The best choice depends on the tooth, bite, aesthetics, remaining tooth structure and budget.
What can be done instead of a dental crown?
Depending on the tooth, alternatives can include a filling, inlay, onlay, bonding, veneer or, when the tooth cannot be predictably saved, extraction followed by replacement.
What is worse, a crown or root canal?
Neither is inherently worse. A root canal treats infection inside the tooth, while a crown restores and protects a structurally compromised tooth. Some patients require both.
Do you need anesthesia for a crown?
Local anaesthesia is commonly used when preparing a tooth with a living nerve. A previously root canal-treated tooth may not require anaesthesia for tooth preparation, although it may still be used for gum or surrounding-tissue treatment.
What happens to crowns after 20 years?
Some crowns can still function after 20 years. Others may need replacement because of wear, fracture, loosening, poor fit, gum changes or decay around the underlying tooth.
Can a cavity be filled under a crown?
It depends on where and how extensive the decay is. Treatment may require access through the crown or removal of the crown, followed by restoration. Severe decay may require root canal treatment.
Can a dentist remove a crown without damage?
Sometimes a crown can be removed intact, but not always. A permanently cemented crown may need to be cut into pieces for safe removal. Never attempt to remove it yourself.
Medical disclaimer: This article is for general educational purposes and does not replace an examination or diagnosis by a qualified dentist. The appropriate crown material and treatment depend on the individual tooth and oral health condition. Cost figures are indicative and can change according to clinic, material, laboratory, complexity and additional procedures.
To consult a Dentist at Sparsh Diagnostic Centre, call our helpline number 9830117733.
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Medically Reviewed By
This article has been medically reviewed by Dr. Jaydeep Roy, BDS, Dental Surgeon at Sparsh Diagnostic Centre.
The content has been reviewed for medical accuracy, clinical relevance and clarity to ensure that the information about root canal treatment, its procedure, recovery, benefits and potential risks is consistent with current dental practice and patient-care guidance.
Medical Reviewer: Dr. Jaydeep Roy, BDS
Speciality: Dentistry
Medical Review Date: 3rd September 2026
This article is intended for general health information and educational purposes only. It should not be used as a substitute for professional dental advice, diagnosis or treatment.
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No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.
