Why Your Dentist Places a Temporary Crown
When you need a crown or bridge, your tooth gets prepared (shaped and reduced) during the first appointment. Your permanent crown isn't ready yet—your dentist sends the specifications to a lab, which takes 1-2 weeks. During that waiting period, your prepared tooth is vulnerable. That's why your dentist places a temporary crown: to protect your tooth while you wait for the permanent one.
Think of a prepared tooth like an unprotected house. Learn more about Eccentric Relation Side to for additional guidance. The roof (your enamel) has been removed, exposing the inner structure (dentin) to the elements.
A temporary crown acts like a protective roof, keeping your tooth safe from damage, soreness, bacteria, and moisture. Your tooth looks normal while you're waiting, so you can smile confidently and eat normally (though with some care). This temporary repair also lets you try out how your new tooth will look, feel, and function before the permanent one is cemented.
Protecting Your Tooth and Keeping You Comfortable
A prepared tooth without protection feels very sensitive. Hot coffee, cold ice cream, biting pressure, and even air can cause sharp pain because the inner tooth structure (dentin) is exposed. A temporary crown insulates your tooth from these stimuli and prevents bacterial infection risk that could cause decay or infections. For teeth with deep prep, protection is especially important to prevent nerve damage and pain.
The temporary crown also protects the prepared tooth from chipping or breaking. Your tooth structure is now more fragile than usual, so a protective covering prevents the edges from chipping during eating or speaking. This means your new permanent crown will fit perfectly when it arrives from the lab.
Seeing How Your New Tooth Will Look
Your temporary crown lets you preview how your permanent crown will look, feel, and function. Does the color match your other teeth? Does it feel comfortable when you bite?
Does it affect your speech? Does the shape look natural? You and your dentist can make adjustments to the permanent crown based on your feedback with the temporary one. For example, if you decide you prefer a slightly different color or shape, your dentist can modify the final crown before it's cemented permanently.
What's Your Temporary Crown Made Of?
Your temporary crown is typically made from a tooth-colored material called bis-acryl resin. Your dentist mixes two pastes together, and they harden in about 6-8 minutes. This material looks like a real tooth, matches your natural tooth color well, and is strong enough to protect your tooth for 1-3 weeks while your permanent crown is being made. It's also easy for your dentist to adjust if needed—if it feels too high when you bite, your dentist can shave it down quickly.
How Long Does a Temporary Crown Last?
Temporary crowns are designed for 1-3 weeks of use. They're strong enough to protect your tooth during this period but not meant to be permanent. If your lab is delayed and your permanent crown won't be ready for more than 3-4 weeks, your dentist might replace the temporary crown with a fresh one or switch to a more durable material for longer-term protection.
Some dentists use a different material called PMMA acrylic for cases where the temporary needs to last longer. This material is very durable but doesn't look quite as natural as bis-acryl. Your dentist chooses the best material based on how long you'll need the temporary and how important the appearance is. For back teeth where appearance isn't critical, your dentist might use a metal temporary crown for extra durability, though tooth-colored temporary crowns are increasingly preferred for better esthetics.
How Your Temporary Crown Is Made
Your dentist can make your temporary crown two ways. The most common method is making it right in your mouth during the prep appointment. Your dentist applies the material directly to your prepared tooth, shapes it, and finishes it while it hardens. This takes about 15-20 minutes, so you leave with your temporary crown the same day. The advantage is that you can right away test how it feels and looks, and your dentist can adjust it right away if needed.
Alternatively, your dentist might take an impression of your prepared tooth and send it to the lab to fabricate the temporary crown. This method creates a more precise fit because the crown is made on a model instead of directly in your mouth. It takes a bit longer, but the final temporary crown fits better. This method is especially useful for complex cases where precision matters.
Many dentists use a hybrid approach: they make an index (mold) of your natural tooth before prep, then use this index to guide them while building your temporary crown right in your mouth. This combines the advantages of both methods—fast chair time and good fit.
How Your Temporary Crown Is Attached
Your temporary crown is cemented in place with special temporary cement. Your dentist chooses a cement that sticks firmly enough to keep your temporary crown in place during eating and chewing, but isn't so strong that it's difficult to remove when your permanent crown arrives.
The most common temporary cements are easy to remove without harming your prepared tooth. When your permanent crown is ready, your dentist removes the temporary crown and the temporary cement with hand instruments or ultrasonic vibration. This process shouldn't hurt or damage the tooth prep. Your dentist ensures all excess cement is carefully removed from the margins before it hardens, because cement left behind causes soreness and swelling.
Tips for Caring for Your Temporary Crown
Your temporary crown is protective but not indestructible. Be gentle with it. Avoid sticky foods like caramel or gum that might pull your crown off.
Avoid hard foods that might crack it. Avoid grinding or clenching your teeth, which puts excessive stress on the temporary. Chew mostly on the opposite side of your mouth if possible.
Brush your temporary crown gently like your other teeth, but be extra careful around the crown margins. Floss carefully around it—use floss tape rather than string floss, and be gentle to avoid dislodging the crown. If your temporary crown feels loose or comes off, contact your dentist right away. Don't try to recement it yourself.
Getting the Fit Just Right
How well your temporary crown fits around the edges matters. If gaps exist between the crown and your prepared tooth, bacteria and saliva can leak underneath, causing soreness, decay, or even nerve damage. Your dentist carefully applies the material layer by layer to create smooth, well-fitting margins. They often use a shade of material that contrasts with your tooth color so they can see exactly where the margins are while shaping.
After your temporary crown hardens, your dentist checks it carefully. They might remove it from your mouth to inspect the edges closely with an explorer or air stream, making sure the crown material doesn't extend beyond the tooth prep. A slight overhang is sometimes unavoidable and acceptable. Excessive overhangs get trimmed down. Your dentist also checks that the chewing surfaces fit smoothly into your bite without being too high, which could create painful pressure.
Sensitivity After Temporary Crown Placement
Some tooth soreness for a few days after crown prep is normal. Your tooth has been shaped and its inner dentin is exposed. Taking over-the-counter pain reliever can help. Using desensitizing toothpaste for a few days may provide relief. If soreness persists beyond a few days or is severe, contact your dentist—they might apply a protective coating inside your temporary crown.
Every patient's situation is unique. Talk to your dentist about the best approach for your specific needs.rovisional repairs permit some degree of microleakage, necessitating additional protective measures for teeth with shallow pulp anatomy.
Calcium hydroxide application to exposed dentin provides additional pulp protection through alkaline chemistry that neutralizes acids and promotes reparative dentin formation. A thin layer of calcium hydroxide applied to all exposed dentin surfaces before provisional repair placement provides additional protection without affecting repair adaptation. Calcium hydroxide sets to a brittle material and should be covered by the provisional material to prevent displacement.
For teeth with especially shallow pulps or heavily cut preparations, additional protective bases including glass ionomer cement or other biocompatible materials can be applied before the provisional repair, creating a protective sandwich effect. These bases should be thin enough that they do not alter the repair contour much.
Occlusal Considerations
Provisional repairs should be checked for prematurities and adjusted to achieve appropriate occlusal contacts. High points on the provisional crown can cause rapid wear, fracture, or complete displacement. Occlusal adjustment involves selective removal of material at high-contact areas until appropriate contact patterns are achieved.
Verification of proper occlusion requires use of articulating paper and careful observation of contact patterns in centric relation and functional movements. The provisional repair should contact in centric relation at contact areas that are identical to or slightly lighter than adjacent natural teeth. Eccentric movements (lateral excursions, protrusion) should not show contacts on the provisional repair; these movements should contact on natural teeth only.
For provisional bridges, occlusal contact verification requires especially careful assessment because the pontic contact on opposing tissue must be light (approximately 20-30 micrometers contact) to avoid swelling or ulceration. The retainers should contact at appropriate points. The pontic should not contact opposing teeth if a standard pontic design is used; modified ridge lap pontics that contact the opposing ridge may be appropriate for certain cases.
Duration and Replacement Protocols
Provisional repairs fabricated from bis-acryl are designed for 2-3 weeks of service. When laboratory delays extend the provisional period beyond 3 weeks, the provisional repair should be replaced or reinforced. Bis-acryl repairs remaining in place beyond 4 weeks risk degradation, wear through to prep margins, and increased postoperative soreness.
If the final repair delivery is delayed beyond 3-4 weeks, removing the provisional repair, thoroughly cleaning the prepared surface, and applying a fresh provisional repair provides better protection. This replacement process takes minimal time and greatly reduces risk of problems from aged provisional repairs.
Removal of Provisional Restorations
Provisional repair removal at delivery appointment must be accomplished with care to avoid damaging the prepared tooth structure. Bis-acryl repairs are generally removed by careful application of hand instruments around the repair margins, combined with gentle lateral pressure. Over-aggressive removal attempts can cause chipping of prep margins, especially if the prep exhibits significant undercuts or fragile margins.
Use of ultrasonic instruments set to low frequency (around 20 kHz) with light contact facilitates removal by vibrating the repair off the tooth. This technique is especially useful for repairs that have been seated for extended periods. Complete removal of all provisional material residue before the definitive repair seating is essential, as residual provisional material can interfere with fit or cementation of the final repair.
Clinical Documentation
Clinical records should document the provisional repair material selected, fabrication method employed, seating date, planned delivery date, any problems or adjustments made, and removal observations. This documentation creates a record of the provisional phase and provides information valuable if problems occur or if the case is referred to another provider.
Related reading: Same-Day Dentures: Getting Teeth the Day Your Teeth Are.
Conclusion
Provisional repairs represent critical interim treatment elements protecting tooth structure, keeping esthetics and phonetics, and permitting functional assessment during multi-visit prosthodontic treatment. Careful material selection, meticulous fabrication technique, appropriate cementation, and timely replacement when necessary ensure optimal provisional repair performance and support successful outcomes when definitive repairs are delivered.
> Key Takeaway: Your temporary crown protects your prepared tooth from damage, sensitivity, and decay while your permanent crown is being made. Temporary crowns are designed for short-term use (1-3 weeks), are relatively easy to adjust, and let you preview how your permanent crown will look and feel.