General & Restorative27 April 20253 min read

Dental Inlay vs Onlay: What's the Difference?

Inlays fit inside cavities. Onlays cover cusps. Here's when each is right.

Dr. Fatima Hassan

General Dentist & Endodontist

Inlay

  • Fits inside the biting surface
  • Doesn't cover cusps
  • For medium-sized cavities

Onlay

  • Covers one or more cusps
  • For larger cavities or cracked cusps
  • Stronger coverage

When each

  • Small–medium: inlay
  • Medium with cracked cusp: onlay
  • Most cusps cracked: crown

Cost in Dubai

  • Inlay: AED 1,800–3,500
  • Onlay: AED 2,000–4,000

Lifespan

15–25 years — often outlasting filling alternatives.

References

  • American Dental Association

Referenced sources

  • American Dental Association

Medical disclaimer. This article is informational and does not replace professional clinical advice. For a plan specific to your situation, book a consultation with a Paradise Dental specialist.

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