What is a filling?

A filling is a direct restoration placed into a cavity during a single appointment.Dentists use materials like composite resin to:

• remove decay
• fill the space
• restore shape
• protect the tooth

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Fillings are quick, accessible and ideal for small to medium cavities.

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What is an inlay?

An inlay is an indirect restoration made outside the mouth, usually in a dental lab or via digital scanning.

It is then bonded into the tooth for a precise fit.

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Inlays are:

• stronger
• longer‑lasting
• more durable
• ideal for larger cavities
• designed for high‑pressure chewing areas

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They’re often recommended when a filling wouldn’t be strong enough.

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Inlay vs filling

When dentists recommend a filling

Fillings are ideal when:

• the cavity is small or medium
• decay is limited
• the tooth structure is mostly intact
• you want a quick, convenient treatment

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Composite fillings blend naturally with your tooth colour.

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When dentists recommend an inlay

Inlays are recommended when:

• the cavity is large
• the chewing surface needs extra strength
• a filling may crack or fail
• long‑term durability is important

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Inlays are custom‑made for a precise, secure fit.

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Which option lasts longer?

Fillings

Typically last 5–7 years, depending on size and oral care.

Inlays

Often last 10–20 years, thanks to stronger materials and better fit.

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Which option looks more natural?

Both can look natural, but inlays often provide:

• better colour stability
• smoother finish
• more precise shaping

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This makes them ideal for visible teeth or cosmetic cases.

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How digital dentistry improves both treatments

Modern digital tools make restorative care more:

• accurate
• accessible
• technology‑driven
• convenient

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Digital scans help dentists design inlays with exceptional precision, while composite fillings benefit from improved bonding techniques.

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How to choose between an inlay and a filling

Choose a filling if:

• the cavity is small
• you want a quick appointment
• cost is a priority
• the tooth structure is strong

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Choose an inlay if:

• the cavity is large
• you want long‑term durability
• the tooth is under heavy chewing pressure
• you prefer a lab‑made restoration

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A dentist assessment confirms the best option.

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How Toothfairy supports your dental journey

Photo‑based assessments

Upload images to check whether your cavity needs a filling or inlay.

Dentist‑led guidance

Clear advice on treatment options and next steps.

Smart brushing support

The Toothfairy Wand helps maintain enamel and gum health.

Clear next steps

Know whether you need emergency care, restorative treatment or a clinic visit.