Claims · Foundations

What Is Dental Negligence?

Dental negligence is not the same as an unwanted outcome. In UK law it means treatment fell below the standard of a reasonably competent dentist — and that failure directly caused you avoidable harm.

6 min readUpdated November 2025
Legal library, dental negligence case law
Definition

The plain-English meaning

Dental negligence occurs when a dentist, hygienist, orthodontist or other clinician provides care that no responsible body of their peers would consider acceptable — and a patient is harmed as a direct result. Disappointment with a cosmetic result, or a rare complication that was properly warned about, is not negligence.

Two things must be true for a claim to succeed: a breach of duty (the care was substandard) and causation (the breach caused an injury that would otherwise have been avoided).

The legal test

Bolam, refined by Bolitho

The Bolam test asks whether the treatment would be supported by a responsible body of dentists practising in that field. Bolithoadded that the body's opinion must itself withstand logical scrutiny — a dentist cannot rely on a peer group whose reasoning does not stand up.

In practice this is why every claim requires an independent dental expert. Their report is the spine of any case that proceeds.

Examples

What negligence looks like in practice

  • Extracting the wrong tooth, or leaving fragments in the socket.
  • Placing an implant into the inferior alveolar nerve.
  • Failing to investigate a persistent ulcer that turns out to be oral cancer.
  • Repeatedly missing periodontal disease across multiple check-ups.
  • Cosmetic work performed without informed consent, causing permanent damage.
Boundaries

When it is not negligence

Every procedure carries recognised risks. When a dentist has properly warned you, chosen a reasonable technique and acted with the skill of their peers, an unlucky outcome is not, in law, negligence. Distinguishing the two is the first thing our specialists do.

A confidential first step

Not sure whether what happened crosses the line? Take a private, five-minute view with a specialist. in confidence.

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