Ever had a dental crown come loose at the most inconvenient moment? It’s a common problem that leaves many wondering what kind of adhesive dentists use to secure crowns—and what you can do if you’re in a pinch. Understanding how dental adhesive works is key to ensuring your crown stays put and your smile remains confident.
In this article, we’ll break down what dental adhesive for crowns is, how it’s applied, and practical tips for dealing with loose crowns.
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Understanding Dental Adhesive for Crowns
Dental adhesive—or dental cement—is a specialized type of glue used by dentists to attach crowns securely onto teeth. Crowns function as protective caps, restoring both the appearance and function of damaged or decayed teeth. The dental cement is crucial for holding the crown firmly, preventing bacteria from entering beneath, and ensuring durability and comfort.
Why Special Dental Adhesive is Needed
You may wonder if regular household glues work for crowns. The answer is a firm no—only professional dental adhesives should be used for dental crowns. These cements are designed to:
- Withstand the moist environment of the mouth.
- Be non-toxic and safe for oral tissues.
- Have the right strength to hold the crown in place under chewing forces.
- Allow removal or replacement by your dentist if necessary.
Using commercial glue or other adhesives can damage your teeth, gums, and even the crown itself.
Types of Dental Adhesive for Crowns
There are various types of dental cements, each with specific purposes and properties. Dentists choose adhesives based on the type of crown, the patient’s oral health, and how long the restoration is meant to last. Here are the primary categories:
1. Temporary Dental Adhesives
Temporary cements are used when a crown is meant to be in place for only a short period. Reasons for temporary placement include:
- Allowing time to observe how a permanent crown fits.
- Protecting the tooth while waiting for a custom crown.
Characteristics:
- Easy to remove by a dentist.
- Not as strong as permanent adhesives.
- Useful for emergencies if a crown falls out before a dental appointment.
2. Permanent Dental Adhesives
Permanent cements are used for the final placement of your dental crown. They are made to last for years, enduring chewing and daily oral functions.
Common Types of Permanent Cements:
- Resin-Based Cements: Excellent bond strength and aesthetics; commonly used for all-ceramic crowns.
- Glass Ionomer Cements: Bond chemically to tooth structure and release fluoride, helping prevent decay.
- Zinc Phosphate Cement: One of the oldest types, offering proven strength but less bond to tooth structure.
- Resin-Modified Glass Ionomer: Combines benefits of resin and glass ionomer for increased strength and flexibility.
Step-by-Step: How Dental Adhesive for Crowns is Used
Understanding the process can demystify the experience and empower you to care for your dental restorations properly.
1. The Crown Preparation
- Your dentist will first ensure the tooth is restored, clean, and shaped for the crown.
- Any decay or old materials are removed.
2. Selecting the Right Adhesive
- The most suitable dental cement is chosen based on your unique needs and the crown material.
3. Mixing the Cement
- The dental adhesive can come pre-mixed or require mixing immediately before application.
4. Placing the Crown
- A thin layer of cement is evenly applied inside the crown.
- The crown is firmly placed onto your prepared tooth.
5. Setting the Crown
- The dentist asks you to bite down gently for even seating.
- The adhesive sets quickly—sometimes with the help of a special curing light, especially for resin-based cements.
6. Cleaning Excess Cement
- Any extra glue squeezed out is carefully removed to prevent irritation to your gums.
Benefits of Professional Dental Adhesive
Using the right dental cement offers multiple advantages:
- Strong Hold: Keeps the crown securely in place under chewing and biting pressure.
- Protection: Seals the underlying tooth, defending against decay and sensitivity.
- Comfort: Ensures your bite remains natural and pain-free.
- Biocompatibility: Does not irritate your gums or surrounding tissues.
- Aesthetic Matching: Certain adhesives (especially resin-based) can be shaded to match your tooth color.
Challenges and Potential Issues
While dental adhesives are generally safe and effective, some challenges may arise:
- Crown Loosening: If cement fails or if too little is used, the crown may become loose or fall off.
- Sensitivity or Allergies: Rarely, some people may react to the components, experiencing irritation.
- Decay Under the Crown: Improper sealing can allow bacteria to enter, leading to decay.
- DIY Risks: Attempting to reattach a crown at home with non-dental glue can cause permanent damage.
What to Do If Your Crown Falls Out
It’s unsettling if your crown comes loose or falls out. Here’s what you should do:
Immediate Steps
- Retrieve the Crown: Carefully pick it up; avoid swallowing or losing it.
- Inspect the Crown and Tooth: Check for pieces of the tooth inside the crown or sharp edges on the exposed tooth.
- Protect Your Tooth: If sensitive, cover with temporary dental cement available at most pharmacies, such as those found in the oral care aisle.
- Avoid Regular Glues: Do not use household glues (like super glue). These are unsafe for oral tissues.
- Contact Your Dentist: Book an appointment as soon as possible for professional re-cementing or replacement.
Tip: If you use a pharmacy-bought temporary cement, follow the package instructions carefully, and inform your dentist before your visit.
Practical Tips for Managing Crowns
- Maintain excellent oral hygiene—brush and floss carefully to prevent gum disease and decay.
- Avoid chewing hard foods or sticky candy that may dislodge your crown.
- See your dentist for regular check-ups.
- If your bite feels “off,” let your dentist know; the crown may need adjustment.
- Keep a dental repair kit (with temporary cement) in your home for emergencies.
Understanding the Cost
Dental adhesive and re-cementing procedures can vary in price:
- Professional Re-cementing: Costs depend on your location, your dentist, and whether new materials are needed. Typically, this is more affordable than replacing a lost or damaged crown.
- Temporary Dental Cement: Over-the-counter repair kits (for emergencies) typically cost between $5 and $20.
- Shipping for Dental Adhesive Kits: When ordering online, check shipping costs. Many pharmacies offer free shipping for dental care products above a certain amount.
Tip: Using professional services avoids costly mistakes. Trying to “fix” a crown yourself with improper adhesives can lead to more expensive dental repairs later on.
Frequently Asked Questions (FAQs)
1. Can I use regular glue to reattach my dental crown?
No, you should never use regular household glue, super glue, or other non-dental adhesives. These are not safe for your mouth, can irritate soft tissues, and may damage your tooth or the crown. Only dental-specific adhesives or temporary dental repair kits intended for oral use should be used—and ideally, only as a short-term fix before seeing a dentist.
2. What should I do if my crown falls off at night or on a weekend?
If you’re unable to reach your dentist immediately, you can use an OTC temporary dental cement from a pharmacy. Clean the crown and tooth carefully, apply the temporary cement according to the instructions, and place the crown back on the tooth. Be gentle when eating and avoid sticky or hard foods. Contact your dentist at the earliest opportunity.
3. How long do temporary dental adhesives last?
Temporary dental cements are designed to last only a few days to a week. They are not a substitute for a professional, permanent fix. Visit your dentist as soon as you can, since a temporary bond is unlikely to withstand long-term chewing and can allow bacteria to enter.
4. Why does my dental crown keep falling off?
A crown may become loose or fall off due to decay under the crown, worn or failed cement, an improper bite, or eating particularly sticky or hard foods. If this happens multiple times, let your dentist know; the crown or underlying tooth might need further treatment, reshaping, or a different type of adhesive.
5. Is re-cementing a crown expensive?
Re-cementing a crown is typically less expensive than replacing the entire restoration. Costs vary, but it’s often a quick procedure. If additional work is needed—like decay removal or crown refurbishment—costs may increase. Using at-home temporary cement as a stopgap is affordable, but always follow up with your dentist to ensure a proper, long-lasting repair.
Summary
Dental adhesives—or cements—play an essential role in securely attaching crowns and protecting your restored teeth. Only specialized dental glues should be used for this purpose, ensuring strength, safety, and comfort. If your crown becomes loose or falls out, avoid using household glues—opt for temporary dental cement only as an emergency measure and visit your dentist promptly. Good oral care, regular dental visits, and correct handling of emergencies will help your crowns last for many years.