We placed a composite core buildup to reconstruct the internal structure of your tooth and prepare it to receive a crown. Follow these instructions to protect the work done and recover without complications.

What is a composite core buildup and why did you need it?

A composite core buildup (also called a core build-up or post and core) is a structure made from high-strength composite resin placed inside and over the tooth to reconstruct the portion destroyed by decay, fracture or other damage. The core replaces the lost tooth structure and creates a solid foundation on which the permanent crown will be placed.

Extensive decay: When decay destroyed so much dental structure that there isn’t enough remaining to directly retain a crown, the core rebuilds that foundation.
Fracture or broken tooth: A tooth fractured at the gum level or with significant breakage that doesn’t leave enough base for a crown needs a core to rebuild its height and shape.
Post root canal treatment: After a root canal, the tooth loses much of its structure. The core, sometimes anchored with a post, restores the necessary resistance before placing the crown.
Severely worn tooth: Severe wear from bruxism or other causes can reduce tooth height so much that a core is needed to recover the correct dimension.

How was the procedure done?

Local anesthesia was applied to ensure comfort throughout the procedure.
The inside of the tooth was cleaned and prepared, removing any damaged or infected tissue.
In post-root canal cases: a fiber glass or metal post was placed inside the canal for additional anchorage of the core.
Composite resin was applied in layers, modeling the shape of the future abutment (the base that will receive the crown).
Each layer was photopolymerized (cured with special light) to ensure maximum hardness.
The core was shaped with the exact form and angles needed by the crown.
An impression or digital scan was taken to fabricate the crown in the laboratory.
A temporary crown was placed to protect the core while the permanent one is made.

The composite core by itself is NOT the final treatment — it is the foundation that supports the permanent crown. Without the crown on top, the core is exposed and vulnerable. That’s why protecting the temporary crown is essential.

After the Anesthesia

How you feel leaving the clinic

Local anesthesia can take 2 to 4 hours to wear off completely. During this time the treated area will be numb — lip, cheek or tongue depending on which tooth was treated.

Don’t eat until sensation returns (Important): With the area numb it’s very easy to bite your cheek, lip or tongue without feeling it. Wait until the anesthesia has completely worn off before eating anything solid.
Take the pain reliever before the effect wears off (Important): When the anesthesia starts to wear off (approximately 2 hours after the procedure) you may feel discomfort. Take the prescribed pain reliever BEFORE it disappears completely to get ahead of the pain.
Strange sensation when biting: It is completely normal to feel the bite differently, especially if the temporary crown is new. This sensation of different height or pressure improves within a few days as you adapt.

The Temporary Crown — Your Priority #1

It protects the core while the permanent crown is made

The temporary crown is the shield protecting the composite core. Without it, the core is exposed to fracture, contamination and extreme sensitivity. Caring for the temporary is just as important as caring for the core itself.

Do with the temporary crown:

Brush it gently — it’s temporarily cemented but withstands normal brushing
Use it to chew soft and moderate foods
Use dental floss very carefully, sliding it sideways without pulling sharply upward
Let us know immediately if it loosens, moves or falls off
Maintain normal hygiene throughout the rest of the mouth

Don’t do with the temporary crown:

Don’t chew very hard or crunchy things directly on it (nuts, ice, chips)
Don’t eat very sticky foods that can pull it off (chewy candies, taffy, gum)
Don’t use the temporary tooth to open packages, bottles or anything similar
Don’t ignore it if it feels loose — a loose temporary doesn’t protect the core
Don’t skip or delay the permanent crown appointment

Did the temporary crown fall off?

It’s not a medical emergency but does require prompt attention. The core is left unprotected and can fracture or become contaminated. Contact the clinic that same day or the next day to re-cement it. In the meantime, store the crown in a clean container and avoid eating on the affected side.

Pain and Discomfort: What’s Normal

The expected progression after the procedure

First hours — Discomfort as anesthesia wears off (Normal): As the anesthesia fades there may be mild to moderate sensitivity or discomfort in the treated tooth and gum. Completely normal — dental and gingival tissue was worked on. Control with the prescribed pain reliever.
Day 1-3 — Sensitivity when biting and to temperature (Normal): Very common to feel thermal sensitivity (cold/heat) and when chewing the first days. The core and treated tooth are responding to the procedure. The temporary crown helps but isn’t perfect.
Day 3-7 — Progressive improvement (Improving): Discomfort should be clearly decreasing. Thermal sensitivity reduces. The tooth is stabilizing. If the temporary crown fits well, pain should be minimal.
Week 2+ — Full recovery (Good): No spontaneous pain. Mild occasional sensitivity may remain — that’s acceptable. Once the permanent crown is placed, any remaining sensitivity almost always disappears completely.

If pain is very intense from the start, doesn’t respond to medications, or if after day 3 pain worsens instead of improving, contact the clinic. Don’t endure it — there may be a pressure point on the temporary crown or a complication to resolve.

Prescribed Medication

Take medications exactly as instructed

KEY: Start the pain reliever BEFORE the anesthesia wears off — it’s much more effective taken preventively than waiting for intense pain.

Pain Reliever / Anti-inflammatory — Ibuprofen 400-600mg or Naproxen (as indicated): Controls post-procedure pain and inflammation. Take with food. Follow the prescribed schedule even if pain is tolerable — it’s more effective to maintain a constant medication level than to take it only when pain is severe.
Antibiotic — Only if prescribed: Not always indicated. If prescribed, complete the full course without interruption even if you feel fine. Generally prescribed when there was active infection or elevated risk.

Avoid aspirin — it interferes with clotting. If you take other medications regularly (anticoagulants, antihypertensives, etc.), let us know if you have any questions about compatibility.

Eating for the First Days

Eat carefully to protect the temporary crown and the core

Eat on the OPPOSITE side from the treated tooth when possible
Lukewarm or cool temperature — avoid sudden temperature contrasts
Cut food into small pieces instead of biting with the treated tooth
Soft foods the first 3-5 days while sensitivity decreases
Avoid chewing gum — it can dislodge the temporary crown

Recommended foods

Natural yogurt and soft dairy
Eggs prepared any way
Warm soups and broths
Very well cooked pasta
Soft boneless fish and chicken
Mashed potato or vegetables
Avocado
Banana and soft fruits
Soft white rice
Gelatin and custard

With caution

Meats — cut them well before eating
Bread — prefer soft bread, avoid very crunchy baguettes
Raw vegetables — cut into small pieces
Hard-skinned fruits — peel and cut them

Avoid completely

Ice (biting or chewing)
Hard or chewy candies
Whole nuts
Chewing gum
Chips and very hard fried foods
Corn on the cob directly
Very sticky foods (taffy, caramel)
Extremely cold or hot drinks if there is intense sensitivity

Oral Hygiene with Core and Temporary Crown

Keeping the area clean is essential — with the correct technique

The junction between the temporary crown and the tooth is a critical point where plaque can accumulate and decay can develop. Poor hygiene in this area can compromise the tooth right when it needs it most.

Same day of procedure — Gentle hygiene of the rest of the mouth: Brush all teeth normally except the treated area. Wait until anesthesia has completely worn off before brushing the tooth with the temporary crown. Don’t rinse forcefully in the first few hours.
Following day onward — Gentle brushing over the temporary crown: Brush the temporary crown with gentle, circular motions without excessive pressure. You don’t need to avoid it — gently brushing is the right thing to keep it clean and protect the surrounding gum.
Dental floss — Yes, but with special technique: Dental floss is essential but requires technique: slide the floss downward between adjacent teeth and remove it sideways (not sharply upward). Pulling sharply upward can dislodge the temporary crown.
Mouthwash — Alcohol-free, gentle formula: If you use mouthwash, choose one without alcohol. Alcohol can degrade the temporary cement with prolonged use. A fluoride rinse is ideal to protect tooth enamel.

Additional tips:

Use a soft-bristle brush — there’s no reason for hard bristles ever, but especially not with a temporary crown
Pay special attention to the gum margin around the temporary crown — that’s where plaque accumulates most
If using a water flosser, aim at low pressure and not directly at the crown-tooth junction
Ideally brush after each meal during the first week

The Path to the Permanent Crown

The core is step 1 — here’s what comes next

Recovery with temporary crown — 1-3 weeks: The gum that surrounded the margin of the preparation needs to mature and stabilize. The temporary crown maintains the space and shape in the meantime.
Crown fabrication in laboratory — 1-2 weeks: Using the impression or digital scan taken, the dental laboratory fabricates your crown to exact custom dimensions. Time varies by material and laboratory workload.
Try-in and adjustment appointment — Scheduled appointment: We try the crown in your mouth before permanently cementing it. We adjust color, shape and occlusion (bite). Your approval is required before cementing.
Permanent crown cementation — Final appointment: The crown is permanently cemented over the core. The result is a completely restored, functional and aesthetic tooth that can last 10-20 years with proper care.

Don’t cancel or postpone the permanent crown appointment. The temporary crown is NOT a permanent solution — it wears down, can lose its seal and loosen. Every week of unnecessary delay is time the core runs risk.

Warning Signs

When to contact us

Contact the clinic if you experience:

Temporary crown fell off or loosened: The core is left unprotected. Contact the clinic that day to re-cement it. In the meantime, avoid eating on the affected side and don’t try to re-cement it with household glue.
Intense pain that doesn’t respond to pain reliever: May indicate a pressure point on the temporary, a core complication or the tooth nerve responding unusually. Don’t let it go.
Pain that worsens after day 3: Discomfort should progressively decrease. If it worsens after the third day, something needs evaluation.
Swelling in gum or cheek: Especially if it appears days after the procedure and is growing. May indicate incompletely controlled infection.
Fever above 38°C (100.4°F): Sign of active infection requiring attention.
Extreme sensitivity that doesn’t improve: If after the first week you have very intense sensitivity to cold, heat or biting, the tooth may need additional evaluation.
Temporary crown fractured: A broken piece may have sharp edges and the core is left without complete protection. Bring us the crown or whatever remains of it.

This is completely normal:

Mild sensitivity to cold and heat the first days
Discomfort when biting on the treated tooth the first 1-3 days
Mild gum inflammation around the temporary crown
Sensation of different or elevated bite the first days
Different taste or texture when touching the temporary crown
Mild gum bleeding when brushing the first days

Recovery Keys

Take pain reliever before anesthesia wears off
Protect the temporary crown — it’s your shield
Eat on the opposite side the first days
Floss with correct technique, don’t pull upward
Don’t cancel the permanent crown appointment
Let us know if the temporary falls off or loosens

Frequently Asked Questions

How long will I have the temporary crown?

Generally between 1 and 3 weeks while the laboratory fabricates the permanent crown. The exact time depends on the material chosen, case complexity and laboratory schedule. We’ll let you know the approximate time at your appointment.

Is the composite core as strong as natural tooth?

Modern composite resins are very resistant but not identical to natural enamel. That’s why the core must always be covered by a crown — the crown provides the hardness and definitive protection for normal chewing.

Do I need a post in addition to the core?

Not always. A post is indicated when the tooth doesn’t have enough own structure to retain the core, especially after a root canal. If one was placed, we would have mentioned it during the procedure. The post anchors the core inside the root canal.

Why does the temporary crown look different from my teeth?

Temporary crowns are quickly fabricated in the clinic with acrylic materials — they’re designed to protect and function, not to be the final aesthetic solution. The permanent crown will be custom-made, with the exact color, shape and gloss you chose.

Can I eat normally with the temporary crown?

You can eat soft and moderately hard foods in moderation. What to avoid: very hard foods (ice, nuts), very sticky foods (chewy candies, gum) and biting non-food objects. The main risk is dislodging or fracturing the temporary.

Will cold sensitivity go away when the permanent crown is placed?

In most cases yes. Residual sensitivity after the procedure generally disappears once the permanent crown is cemented, which perfectly seals the tooth. If it persists after the permanent crown, we evaluate it.

What happens if I don’t go to the permanent crown appointment?

The temporary crown eventually wears down, loses its seal or falls off. Without a crown over the core, the tooth is vulnerable to fracture (the core alone can’t withstand chewing indefinitely), contamination and new infection. All the work done can be lost.

Can I exercise on the day of the procedure?

We recommend avoiding intense exercise that day. Increased circulation can generate more discomfort and inflammation. From the following day, if you feel well, you can resume moderate physical activity.

Why does my bite feel different?

The temporary crown may feel slightly elevated or different when biting. This is normal during the first days of adaptation. If after 3-5 days the sensation of an elevated bite persists or there’s a very marked pressure point, let us know for a small adjustment.

How long does the permanent crown that will go over the core last?

With proper care, a porcelain or metal-ceramic crown can last between 10 and 20 years. Lifespan depends on hygiene, habits (untreated bruxism wears it down quickly), material and periodic check-ups.

Care After a Composite Core Buildup