We just placed (or prepared you for) a dental inlay or onlay — a custom-made restoration fabricated in a laboratory that precisely restores the shape, function and aesthetics of your tooth. Follow this guide to protect your investment and have a successful recovery.

What is a dental inlay/onlay?

A dental inlay or onlay is a rigid restoration fabricated outside the mouth — in a dental laboratory or with CAD/CAM technology — that is cemented inside the tooth cavity. Unlike direct composite resin that is shaped inside the mouth, an inlay/onlay is built with millimetric precision on a model of the tooth.

An inlay or onlay is chosen when the cavity to restore is too large for conventional direct composite, when a more precise, durable and better-sealed restoration than a traditional filling is desired, or when decay or fracture has compromised one or more cusps of the tooth.

Types by extension:

Inlay — Interior: Located inside the tooth cavity, between the cusps, without covering them. Ideal for mid-sized cavities in the central area of the tooth.
Onlay — Partial: Covers one or more cusps of the tooth in addition to the central cavity. Used when damage affects the tips of the tooth.
Overlay — Full occlusal: Covers the entire occlusal (chewing) surface of the tooth. More extensive restoration, halfway between onlay and crown.

Most common materials:

Ceramic / Porcelain: Superior aesthetics, color identical to natural tooth, excellent strength. Most used option for visible teeth.
Laboratory composite resin: Very good aesthetics, somewhat more economical than ceramic, lower hardness than porcelain. Good intermediate option.
Gold / Metal: Exceptional durability and precise marginal fit. Very resistant to chewing forces. Less aesthetic due to gold color.

Today’s session involved tooth preparation and taking an impression or digital scan. You are wearing a temporary restoration while the laboratory fabricates your permanent inlay/onlay. Follow these care instructions until the final cementation appointment.

After the Anesthesia

What you’ll feel leaving the clinic

Local anesthesia can last 2 to 4 hours after the procedure. The lip, cheek or tooth area may be numb during that time.

Don’t eat until sensation returns (Important): With your lip or cheek numb you can bite yourself without feeling it. Wait until sensation fully returns before eating any solid food.
Take pain reliever preventively (Important): When anesthesia starts to wear off (about 2 hours), take the prescribed pain reliever even if you don’t feel pain yet. It is much more effective to anticipate pain than to treat it once it’s intense.
Bite feels different with the temporary: The temporary restoration may feel different when biting. If there’s a very high contact point causing discomfort when closing, let us know — it can be easily adjusted in the office.

The Temporary Restoration — Key Until the Next Appointment

Protects the prepared tooth while the permanent inlay/onlay is being made

Between tooth preparation and cementation of the permanent inlay/onlay, the tooth has a temporary restoration. This protects the exposed dentin, maintains the space and allows the tooth to function. However, it doesn’t have the same strength or seal as the permanent restoration.

Do with the temporary:

Brush it gently 2-3 times a day like any other tooth
Use it to chew soft foods on the opposite side when possible
Floss carefully, sliding the floss sideways without sharp upward pulls
Let us know immediately if it loosens, moves or falls off

Don’t do with the temporary:

Don’t chew hard, crunchy or sticky foods on the temporary side
Don’t use the tooth to open objects or anything other than food
Don’t ignore if the temporary feels loose — bacteria can infiltrate the prepared tooth
Don’t postpone the permanent cementation appointment beyond what’s indicated

Did the temporary restoration fall off?

Contact the clinic that day. The prepared tooth is left exposed — it can cause sensitivity and contamination risk. If you can’t come right away, avoid eating on the affected side and don’t try to glue it with any household adhesive.

Pain and Sensitivity: What to Expect

It’s normal to feel something — know the progression

First hours — Discomfort as anesthesia wears off (Normal): When anesthesia fades, mild sensitivity or discomfort may appear. Manage it with the prescribed pain reliever. Completely normal — living tissue was worked on.
Day 1-3 — Sensitivity to cold, heat or biting (Normal): Exposed dentin under the temporary restoration can react to extreme temperatures and biting pressure. Expected and usually reduces progressively.
Day 4-7 — Progressive improvement (Improving): Discomfort should clearly decrease. If sensitivity persists or increases, it may indicate the temporary restoration doesn’t seal fully — let us know.
After cementation — Adaptation to permanent inlay/onlay (Good): After cementing the permanent restoration there may be 1-5 days of adaptation. The tooth adjusts to the new material and cement. Sensitivity should disappear in that first week.

About post-cementation sensitivity:

After cementing the permanent inlay/onlay, mild sensitivity for 1-7 days is normal. Some resin cements can generate transient sensitivity while they finish curing. If this sensitivity is very intense or lasts more than 2 weeks, let us know.

If pain is very intense, doesn’t improve with medication, or if after the first week of the permanent restoration there is still significant sensitivity, contact the clinic. A bite adjustment or cement review may be needed.

Prescribed Medication

Take exactly what was indicated

Start the pain reliever BEFORE the anesthesia wears off — the most effective strategy for managing pain on the first day.

Pain Reliever / Anti-inflammatory — Ibuprofen 400-600mg or Acetaminophen as indicated: Controls pain and inflammation the first days. Take with food to protect the stomach. Follow the prescribed schedule even if you don’t feel pain — preventive dosing is more effective.
Antibiotic (if prescribed) — As prescribed: Not always prescribed for inlays/onlays. If we prescribed it — usually when there was very deep decay or infection risk — complete the full course even if you feel better before finishing.

Avoid aspirin if there is recent gum bleeding. Check compatibility with your regular medications if you take anticoagulants or other drugs.

Eating: Before and After Cementation

What you eat matters in both stages

With the temporary restoration (until cementation):

Eat preferably on the opposite side from the prepared tooth
Avoid very hard, crunchy or sticky foods — they can pull off the temporary
Lukewarm or cool temperature — exposed dentin can be sensitive to heat
Cut foods into small pieces to reduce chewing pressure
Avoid gum — it can adhere to the temporary and pull it off

First 24 hours after permanent cementation:

Wait at least 1 hour before eating to allow cement to fully set
First hours: soft foods at room temperature
Avoid chewing on the inlay side the first 24 hours
Avoid very hot, cold or strongly pigmented beverages (coffee, red wine) the first hours

Safe foods

Yogurt and soft custard
Eggs prepared any soft way
Warm soups and broths
Well-cooked pasta
Soft rice
Boneless fish or chicken
Mashed vegetables or potato
Banana and soft fruits
Avocado

Avoid the first days

Very hard foods (nuts, ice, chips, hard crackers)
Hard or very sticky candies
Chewing gum
Very hot foods if sensitive
Very cold drinks if sensitive
Biting directly with the restored tooth the first days

Hygiene with an Inlay/Onlay

Cleaning the margins well prevents secondary decay

The most vulnerable point of any inlay/onlay is its margins — the junction between the ceramic (or resin) and the natural tooth. If plaque accumulates in that area, secondary cavities can form that compromise the entire restoration. Precise hygiene in that area is fundamental.

Technical brushing at the margin: Use a soft-bristle or electric brush. Angle it 45° toward the margin where the inlay/onlay meets the gum. The goal is to eliminate plaque exactly where the material meets the tooth. Minimum two minutes, two or three times a day.
Dental floss — essential: Dental floss is especially important for inlays/onlays because interproximal margins (between teeth) are a risk area. Gently slide the floss, guide it below the inlay margin and move it in a C-shape. Do this at least once daily.
Oral irrigator (recommended): If you have an oral irrigator (Waterpik or similar), use it at medium pressure to clean the spaces around the inlay/onlay. It complements — does not replace — dental floss.
Fluoride rinse: A daily fluoride rinse (alcohol-free) helps reinforce the enamel around the inlay/onlay margins. Use it after nightly brushing.

Avoid with ceramic inlays/onlays:

Very abrasive toothpastes — they scratch the ceramic surface over time
Rinses with high alcohol content — they can affect resin cement
Hard-bristle brushes — they damage the margins

How to Extend Your Inlay/Onlay’s Life

A well-maintained inlay/onlay can last 15-25 years or more

Precise daily hygiene: The number one cause of inlay/onlay failure is secondary decay at the margins. Technical brushing and daily flossing are your best insurance.
Bruxism control: If you grind or clench your teeth, the forces generated can fracture even a ceramic inlay/onlay. If you have bruxism, wear your night guard every night — it’s direct protection for your restoration.
Avoid biting hard objects: Ice, pens, nails, seed shells — these habits generate point forces that can fracture ceramic. The inlay/onlay is very resistant to normal chewing forces but fragile against concentrated impacts.
Periodic check-ups: At each check-up we examine the inlay/onlay margins, the state of adjacent teeth and do professional polishing. Detecting an open margin or early cavity in time can save the entire restoration.

How long does an inlay/onlay last?

Ceramic/porcelain with good care: 15-25 years or more
Laboratory composite resin: 10-15 years average
Gold/metal: 20-30 years (most durable material)
Uncontrolled bruxism can significantly reduce these timelines
Secondary decay from poor hygiene is the most common cause of premature replacement

Warning Signs

When to contact us

Contact the clinic if you experience:

Temporary restoration falls off or loosens: The prepared tooth is left exposed to contamination and sensitivity. Call that same day to re-cement it — don’t let it go.
Very intense pain that doesn’t respond to pain relievers: Post-preparation sensitivity should be mild to moderate. Intense or throbbing pain may indicate the pulp was affected and may require additional evaluation.
Sensitivity lasting more than 2 weeks after permanent cementation: Some post-cementation sensitivity is normal the first week. If it persists more than 2 weeks or worsens, it needs evaluation — there may be microleakage or the cement may need review.
Sensation that the inlay/onlay ‘moves’ or is loose: A cemented inlay/onlay should not move. If you perceive mobility, displacement or a different sound when biting, contact the clinic — it may be partially de-cemented.
Visible fracture of the inlay/onlay: If you notice the ceramic fractured or chipped, bring it to the clinic. Depending on the extent it may be repairable or need replacement.
Persistently irritated or inflamed gum around the tooth: May indicate the inlay/onlay margin is irritating soft tissue, plaque buildup, or a fit problem. Requires evaluation.

This is completely normal:

Mild sensitivity to cold or heat the first days
Mild discomfort when biting the first 24-48 hours
Bite feeling different with the temporary
Mild sensitivity 1-5 days after permanent cementation
Tongue noticing the inlay/onlay margin the first days — it adapts
Mild gum inflammation the first days

Keys for a Long-Lasting Inlay/Onlay

Take pain reliever before anesthesia wears off
Don’t chew on the temporary side
Precise margin cleaning every day
Daily flossing — margins are the risk zone
Don’t postpone the permanent cementation
If you have bruxism, wear your night guard always

Frequently Asked Questions

Why do I need an inlay/onlay instead of a regular filling?

Direct composite fillings are excellent for small and medium cavities but have limitations with large cavities: more shrinkage when curing, less resistance to chewing forces in posterior areas, and less precise sealing. Inlays/onlays, fabricated outside the mouth, allow millimetric fit and use more resistant materials.

How many appointments does an inlay/onlay require?

Generally two appointments: the first to prepare the tooth, take the impression or scan and place the temporary; the second (1-2 weeks later) to cement the permanent inlay/onlay. With in-office CAD/CAM technology it may be done in a single appointment.

Can I whiten a tooth with an inlay/onlay?

The inlay/onlay material (ceramic, resin or metal) doesn’t respond to teeth whitening. If you whiten the surrounding natural teeth, the inlay/onlay will keep its original color and there may be a visible difference. If you plan to whiten, it’s best to do it before the inlay/onlay is fabricated.

Can an inlay/onlay fracture?

Ceramic is resistant to normal chewing forces but can fracture from concentrated impacts: biting ice, hard objects, severe uncontrolled bruxism. If something fractures, don’t ignore it — depending on size it may be repairable or need replacement.

How long should I wait to eat after permanent cementation?

With modern resin cements, generally 1 hour is sufficient for soft foods. The first 24 hours, avoid chewing on the inlay/onlay side. Conventional cements may require longer waiting — your dentist will indicate the exact time based on the cement used.

Why does my bite feel different after the inlay/onlay?

There may be a slightly high contact point that needs adjustment. This is very common and very easy to resolve — it’s a few seconds of adjustment in the office. Don’t tolerate it: a misaligned bite can generate muscle tension and long-term damage.

Does a ceramic inlay/onlay look exactly like the natural tooth?

In the vast majority of cases yes. Modern dental ceramic allows reproduction of the color, translucency and texture of the natural tooth with great precision. In some teeth with very particular coloring there may be a slight difference, but generally the aesthetic result is excellent.

What’s the difference between an inlay/onlay and a crown?

An inlay/onlay preserves most of the healthy tooth structure — it only occupies the damaged area. A crown covers the entire tooth. An inlay/onlay requires less tooth reduction, which is preferable when there is sufficient healthy structure. A crown is indicated when the tooth is very weakened or has little remaining structure.

Can I have a ceramic inlay/onlay if I have bruxism?

Yes, but active protection is required. Bruxism generates forces 6-10 times greater than normal chewing and can fracture ceramic. If you have bruxism, wearing a night guard every night is mandatory to protect the inlay/onlay. Without the guard, fracture risk multiplies significantly.

Can an inlay/onlay be done on a tooth with a root canal?

Yes, and it’s an excellent option. A root canal tooth loses flexibility and can fracture more easily under chewing forces. An onlay or overlay that covers the cusps protects it very well. In teeth with little remaining structure a crown may be preferred.

Care After a Dental Inlay or Onlay