Injury guide

Tooth Root Displaced into the Sinus

A displaced root is a physical fragment within or beside the sinus. It is different from the opening between mouth and sinus that an extraction may create, although both can occur together.

9 min read
Clinical dental image representing an upper tooth extraction near the maxillary sinus

Written / reviewed by Osman Zulfiqar, SRA-regulated Solicitor.

At a glance

Recognised complication or possible negligence?

Comparison of a recognised dental complication and possible dental negligence
Recognised complicationPossible negligence
The injury occurred despite appropriate planning and competent careThe risk was avoidable with reasonable assessment, treatment or follow-up
Material risks and alternatives were explained and recordedA material risk or reasonable alternative was not discussed before treatment
Symptoms were recognised, investigated and referred promptlyWarning signs were dismissed or referral was delayed, worsening the outcome
The fact pattern

A root in the sinus and an oro-antral communication are separate problems

Upper premolar and molar roots may lie close to the maxillary sinus. During removal, a root can fracture and be pushed through the thin sinus floor. An oro-antral communication is the passage left between the socket and sinus; a displaced root is the tooth fragment itself. Imaging may show one or both. Symptoms can include persistent one-sided sinus pressure, discharge, bad taste, fluid passing towards the nose, recurrent infection or no immediate symptom at all. The distinction determines treatment and evidence. A page or complaint that uses the terms interchangeably can obscure whether the allegation concerns creating the opening, displacing the root, failing to disclose it or delaying retrieval.

Negligence question

Root fracture can occur despite competent extraction

Long, curved or fragile roots and a close sinus relationship can make fracture and displacement a recognised risk. The claim examines the indication for extraction, pre-operative imaging, instruments and force used, whether the operator recognised difficulty and whether attempts at retrieval increased harm. Leaving a very small fragment may occasionally be safer than aggressive removal, but that must be a reasoned clinical decision accompanied by disclosure, advice and follow-up. Conversely, blind attempts to chase a root can enlarge the opening or push it deeper. An oral-surgery expert reviews the original images and operative sequence rather than inferring negligence solely from the later scan.

What should happen

Disclosure, imaging and oral-surgery advice shape the response

Where displacement is suspected, the patient should be told and the position assessed. The clinician may need suitable imaging and prompt oral and maxillofacial or oral-surgery advice. The safest timing and route of retrieval depend on root size, location, infection and the opening created; immediate retrieval is not universally correct. Sinus precautions and safety-net advice may be required. NHS patient guidance confirms that roots can rarely enter the sinus and that removal may be attempted immediately or after healing, depending on the individual situation. Legal criticism should therefore identify the specific unreasonable act or delay and the additional harm it probably caused.

Evidence

Pre-extraction and post-extraction imaging answer different questions

The original radiograph shows anatomy and foreseeable difficulty. The extraction note records fracture, retrieval attempts and advice. Later panoramic or CBCT imaging locates the fragment and may show sinus inflammation. Obtain referral correspondence, antibiotic prescriptions, ENT or maxillofacial records, hospital operative findings and pathology where relevant. A timeline should identify sinus symptoms and every report to the practice. An ENT expert may be needed for persistent sinus consequences, while an oral-surgery expert addresses extraction and management. The fact that later surgery removed a root proves its presence, not automatically that competent extraction would have avoided displacement.

Compensation

The claim isolates the additional sinus and surgical burden

Compensation may include avoidable pain, infection, retrieval surgery, general anaesthesia, time off work, travel, care and persistent sinus symptoms, plus reasonable dental reconstruction. The patient cannot recover for extraction that was already necessary, but can recover for additional damage probably caused by negligent displacement or response. A retained fragment that is removed promptly with no lasting consequence will be valued differently from chronic sinusitis and repeated operations. Future treatment and prognosis must be supported by the appropriate specialists.

Displacement event

What if a tooth root was pushed into the sinus?

When a tooth root is pushed into the sinus, the immediate priorities are locating the fragment, checking for an opening between mouth and sinus, controlling infection risk and arranging appropriate specialist management. Displacement can occur despite competent care; negligence depends on planning, technique, recognition, disclosure and referral. Pre- and post-extraction images are particularly important.

FAQs

Frequently asked questions

Yes. Upper back-tooth roots can be very close to the maxillary sinus and can rarely displace into it during extraction.

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