Questions to Ask an Oral & Maxillofacial Surgery Expert Witness at Deposition (2026 Guide)

By John Mahoney · Updated 2026-09-01 · 18 questions in 4 concession chains

You are about to cross-examine someone with two decades of training you don't have, on their home turf, about the thing they do every day. That asymmetry is the defining problem of medical-expert depositions — and it gets worse in multi-defendant malpractice cases, where two to four different specialties can be in play in a single case and you have to be conversant in all of them by deposition day.

OMFS experts testify on nerve injuries from extractions, office-based sedation events, and delayed referral for nerve repair. These cases sit at the border of dentistry and medicine — and the office-sedation cases apply hospital-grade physiology in a setting with far thinner records.

The answer to the asymmetry is not to learn oral & maxillofacial surgery — it is structure. A concession funnel asks the expert to agree, one fact at a time, to propositions so orthodox that refusing them costs more credibility than granting them. The questions below are a generic-case-safe starting bank, organized into the four chains that structure works through.

How to use these questions

Every question below follows three rules of expert cross-examination: it is leading (it states a fact and asks for agreement), it contains one fact (no compounds — a compound question lets the witness answer the easy half), and it belongs to a concession chain (each answer narrows the room the next answer can live in). Ask them in order. When you get the concession, stop — do not ask the "why" question that lets the expert explain it away.

Chain 1 — Qualifications, retention & scope

Goal: establish on the record that this is a paid, retained witness who never touched the patient, and fix the boundaries of what they actually practice.

Doctor, you were retained by opposing counsel in this case, correct?
You are being compensated for your time reviewing this case and for your testimony today, correct?
You never examined or treated the patient in this case, correct?
Everything you know about this case comes from the materials counsel selected and sent to you, correct?
Office-based sedation carries the same physiologic risks as sedation delivered anywhere else, correct?

Chain 2 — Bases-of-opinion lockdown

Goal: freeze the universe. After this chain, any new document, new basis, or new opinion at trial is impeachment material.

You have now told us every document and material you reviewed in forming your opinions, correct?
You are not relying on anything outside that file for the opinions you will give in this case, correct?
You have told us every opinion you intend to offer at trial, correct?
You agree that an opinion you cannot state to a reasonable degree of medical probability is speculation, correct?

Chain 3 — Substantive concessions: sedation rescue and the nerves at risk

Two well-established principles drive these cases: sedation providers must be able to rescue from a deeper level than intended, and the nerves at risk in lower-third-molar surgery are known in advance.

A provider administering sedation must be prepared to rescue the patient from a deeper level of sedation than intended, correct?
That preparation includes monitoring, equipment, and trained personnel, correct?
There are well-known nerves at risk in lower wisdom-tooth extractions, correct?
Pre-operative imaging helps assess the relationship between the tooth roots and those nerves, correct?
Persistent numbness after an extraction warrants follow-up, correct?
The sedation record from this procedure is the contemporaneous account of what was monitored, correct?

Chain 4 — Closing the doors

Goal: end with the record sealed. These questions convert silence into a commitment that nothing new is coming at trial.

You are not offering any opinions in this case beyond the ones we have discussed today, correct?
You have not held back any opinion or criticism that you intend to offer at trial, correct?
You are not offering any opinion about the general dentist’s referral timing in this case, correct?

These are the generic questions. Your case isn't generic.

The MedLegal AI Examination Builder generates a complete, case-specific concession-funnel roadmap for deposing an oral & maxillofacial surgery expert — built from your theory of the case, aware of which side you're on and what kind of witness you're facing, with stop markers, if-they-resist branches, and the doors you should not open. Three free cases, no credit card.

Build my examination → Oral & Maxillofacial Surgery depo trainer

Where lawyers get burned deposing oral & maxillofacial surgery experts

Letting consent boilerplate stand in for a risk conversation

OMFS consent forms list nerve injury in fine print on every extraction. A form signed in the waiting room is not a conversation about this patient’s specific anatomy and imaging. Make the expert concede the difference, then ask what the record shows beyond the form.

Missing the time-sensitivity of nerve-repair referral

Nerve injuries that might be surgically repairable can become unrepairable with delay. If months of "wait and see" preceded any referral, build a separate chain on when persistent numbness should trigger referral to someone who can intervene — distinct from whether the original injury was negligent.

Accepting thin office sedation records at face value

Office sedation records are often a fraction of what a hospital generates. Walk what was and was not recorded — monitoring values, times, personnel present — and make the expert concede which of their opinions rest on documentation and which rest on assumption about routine practice.

FAQ

What questions should I ask an oral & maxillofacial surgery expert witness at deposition?

Work in four concession chains: (1) qualifications, retention, and scope — establish the expert was retained, is compensated, never treated the patient, and what they do and do not practice; (2) bases-of-opinion lockdown — pin every document reviewed and every opinion they intend to offer; (3) the oral & maxillofacial surgery-specific substantive chain — well-established propositions such as "A provider administering sedation must be prepared to rescue the patient from a deeper level of sedation than intended"; and (4) closing the doors — confirm on the record that no undisclosed opinions remain. Every question should be leading, contain one fact, and build on the prior answer.

How do I cross-examine a medical expert when I never went to medical school?

You don't out-doctor the doctor — you build concession chains from propositions so well-established that a credible oral & maxillofacial surgery expert cannot refuse them, then apply those concessions to the facts in the chart. The expert's medical training becomes your asset: the more orthodox the proposition, the more it costs them to fight it. The asymmetry problem is real — especially in multi-defendant cases with two to four specialties — which is why the questions are organized as funnels rather than as debates.

What are the biggest traps when deposing an oral & maxillofacial surgery expert witness?

The classic traps are letting boilerplate consent forms substitute for a patient-specific risk conversation, missing that delayed referral for nerve repair is its own time-sensitive failure, and letting the expert paper over thin office sedation records with assumptions about routine practice.

Related resources

Examination Builder — a case-specific concession-funnel roadmap from your theory of the case
Oral & Maxillofacial Surgery deposition trainer — the other side of the table: how oral & maxillofacial surgery witnesses are prepped against these questions
All specialties — deposition question guides
Are you an oral & maxillofacial surgery physician? Join the MedLegal AI expert network

This page is informational only and is not legal advice. Question banks are generic-case-safe starting points — adapt every question to the facts, the jurisdiction, and your theory of the case before using it in a deposition.