You likely need a dental crown when a tooth is too damaged, cracked or weakened for a filling to hold it together. A crown is a custom cap that covers the whole visible tooth, and getting one usually takes two visits a few weeks apart.
Crowns are one of the most common things a general dentist recommends, and also one of the most commonly postponed. Part of that is cost, and part of it is that a tooth that needs a crown often does not hurt yet. This guide explains the situations where a crown is the right repair, when something smaller will do, what the materials are, and what happens at each appointment.
What Does a Dental Crown Actually Do?
A crown replaces the outer shell of a tooth. Your dentist reshapes the tooth, then covers it with a restoration that is shaped, sized and shaded to match the teeth around it. Because it wraps the tooth from every side, a crown holds cracked or thin walls together under chewing pressure in a way that a filling, which only fills a hole, cannot.
A crown protects, it does not just cover
People sometimes picture a crown as a cosmetic cover. It can improve how a tooth looks, but the main job is structural. Once a large part of a tooth is gone, the remaining walls flex every time you bite. Over months that flexing can turn a small crack into a split that runs below the gum, and a split tooth often cannot be saved. A crown stops that flexing.
Crowns are also part of other treatments
The same restoration shows up at the end of other procedures. A single dental implant is finished with a crown, and a traditional bridge is held in place by crowns on the teeth on either side of the gap. A back tooth that has had root canal treatment usually needs a crown too, because the treated tooth is more brittle than it was.
How Do You Know If You Need a Crown Instead of a Filling?
The deciding question is how much healthy tooth is left. A filling works when the cavity or chip is small enough that the surrounding walls stay strong. When the damage takes up a large share of the tooth, a filling becomes the weakest part of the tooth and the walls around it start to fail.
Common reasons a dentist recommends a crown
- A large or failing filling. Old fillings that cover most of the chewing surface, or that keep breaking and being patched, leave thin walls behind.
- A cracked tooth. Sharp pain when you bite down and release, or sensitivity you cannot pin down, can point to a crack. A crown can hold a cracked tooth together if the crack has not reached the root.
- A back tooth after root canal treatment. Molars and premolars carry the heaviest chewing forces, so they are usually crowned after a root canal.
- A broken or badly worn tooth. Grinding, an old injury or erosion can wear a tooth down until it needs to be rebuilt.
- A tooth that is badly discolored or misshapen when a smaller cosmetic option will not give a lasting result.
When something smaller is the better choice
A crown removes more tooth structure than a filling, so it should not be the default. Small cavities are better treated with a filling. A chip on a front tooth can often be repaired with bonding, and a purely cosmetic concern on a healthy front tooth may be a better fit for a veneer. If you are weighing those two, our post on veneers vs. bonding walks through the difference. A good exam should tell you why a crown is being recommended over the smaller options, not just that you need one.
Signs you should not wait
A crown is usually a planned visit, not an emergency. That changes if the tooth breaks and leaves a sharp or exposed edge, if a crown you already have falls off, or if pain wakes you up at night. A lost crown or filling that leaves sensitive tooth exposed is something our emergency dentistry team will try to see the same day.
What Types of Dental Crowns Are There?
Crowns are made from several materials, and the right one depends mostly on where the tooth is and how hard you bite. At Cochituate Smile Center we offer all-porcelain, all-ceramic and zirconia crowns. All three are metal-free and can be shaded to match your natural teeth.
| Crown material | Main strength | Where it usually fits best | Things to know |
|---|---|---|---|
| All-porcelain | Most natural-looking; mimics the translucency of enamel | Front teeth, where appearance matters most | Not always the first choice for back teeth that take heavy chewing forces |
| All-ceramic | Metal-free with high-strength ceramic options | Front or back teeth, depending on the ceramic used | Covers several ceramic types; your dentist picks the one suited to the tooth |
| Zirconia | Very strong and durable | Back teeth and people who grind or clench | More translucent types suit front teeth; more opaque types are stronger for molars |
How your dentist chooses the material
The choice is a balance between how the crown will look next to your other teeth and how much force it has to handle. A front tooth that shows when you smile leans toward the most lifelike material. A molar at the back of a mouth that grinds at night leans toward strength. Your dentist will explain which one fits your tooth and why, and you are welcome to ask what the trade-off is.
What Happens When You Get a Crown?
Most crowns take two appointments. The first prepares the tooth and the second places the finished crown. Between them, a dental lab makes your crown to your dentist's specifications for material, shade and fit.
Visit one: preparing the tooth
The tooth is numbed first, so this part should feel like a long filling appointment rather than anything painful. Your dentist removes any decay or old filling material and shapes the tooth so the crown can fit over it. If a lot of tooth is missing, the core may be built back up first so the crown has something solid to hold on to.
Impressions and your temporary crown
Once the tooth is shaped, your dentist takes a precise impression, either traditional or digital, and sends it to the lab. The shade is matched to your neighboring teeth. Before you leave, a temporary crown goes on to protect the prepared tooth while the permanent one is made, which usually takes a few weeks.
Visit two: fitting and cementing
At the second visit the temporary comes off and the permanent crown is tried in. Your dentist checks the fit at the gum line, the contact with the teeth on either side and how your bite meets it, and adjusts it until it feels right. Then it is cemented in place.
How Do You Take Care of a Crown?
A crown cannot get a cavity, but the tooth underneath it can, usually right at the edge where the crown meets the tooth. That edge is where most crowns eventually fail, so everyday care matters more than the material you picked.
With a temporary crown
- Chew on the other side where you can, and avoid sticky or very hard foods.
- When you floss, slide the floss out sideways instead of pulling it back up, so the temporary does not lift off.
- If the temporary comes loose, call us. The prepared tooth underneath should not be left uncovered for long.
With your permanent crown
- Brush twice a day and floss once a day, paying attention to the gum line around the crown.
- Keep up your regular exams and cleanings so the edges of the crown are checked.
- If you grind or clench, ask about a night guard. Grinding is hard on crowns and on natural teeth alike.
- Do not use crowned teeth to open packages or crack hard shells.
A crown that is looked after can serve you for many years. When one does need replacing, it is usually because of new decay at the margin, wear, or a crack from a heavy bite, which are the same things regular checkups are designed to catch early.
Frequently Asked Questions About Dental Crowns
Does getting a crown hurt?
The tooth is numbed before it is prepared, so most people feel pressure and vibration rather than pain. It is normal for the tooth and gum to feel a little tender for a few days afterward. If the bite feels high or the tooth stays sore, let us know so we can check and adjust it.
Can I get a crown in one day?
Our crowns are made by a dental lab, so the usual process is two visits a few weeks apart, with a temporary crown in between. If a tooth has broken and you are in pain, call us and we will work on getting you comfortable right away.
Will dental insurance cover a crown?
Many plans cover part of the cost of a crown that is needed to restore a damaged tooth, though coverage varies from plan to plan. Our team can help you understand your benefits, and our insurance and financing page lists the plans we accept.
What is the difference between a crown and a veneer?
A crown covers the whole tooth and is used to restore strength. A veneer is a thin shell bonded to the front surface of a healthy tooth to change how it looks. If a tooth is structurally sound, a veneer or bonding may be enough. If it is weak or broken, a crown is usually the better choice.
Talk to Us About a Tooth That Needs Attention
If you have a cracked tooth, an old filling that keeps breaking or a tooth that needs protecting after a root canal, our team can tell you honestly whether a crown is the right repair. Learn more about restorative dentistry in Framingham, or call Cochituate Smile Center at (508) 875-1060 to book an exam at 254 Cochituate Rd in Framingham.