Selecting the Appropriate Dental Expert: Matching Discipline to the Disputed Issue

Aligning Expertise with the Clinical Issue

In dental medico-legal practice, selecting an expert witness is a pivotal decision for an instructing solicitor. When allegations of professional negligence arise, the court requires evidence strictly relevant to the specific clinical dispute. Appointing an expert whose core practice aligns with the complexities of the case is vital to meeting the requirements of the court under the Civil Procedure Rules (CPR) in England and Wales. Misalignment between the expert’s clinical focus and the nature of the claim can lead to challenges under CPR 35.1, which restricts expert evidence to that which is reasonably required to resolve proceedings.

The dental profession encompasses diverse sub-disciplines, and a generalist perspective may not always provide the depth of insight required for highly specialist claims. For example, a dispute involving endodontic complications, such as a separated instrument or an undiagnosed canal, typically benefits from an expert with extensive clinical experience in the management of pulpal and periradicular disease. Similarly, disputes concerning the failure of implant therapy demand an expert with clinical experience in bone volume assessment, primary stability, and the management of peri-implantitis.

Where a dispute involves broad standard-of-care issues, such as general patient assessment or the management of periodontal disease, the instruction of a practitioner providing core dental care can be highly effective. This approach ensures the expert has a working understanding of the decision-making processes inherent in a general practice environment. In cases involving specific complications, such as nerve injury following third molar extraction or the failure of complex restorative rehabilitation, the court will likely look to an expert whose clinical practice involves these specific procedures.

The Role of the Expert in Breach and Causation

Under CPR 35.3, an expert’s overriding duty is to the court, taking precedence over any duty to the instructing party. When instructing an expert, it is necessary to clearly define whether the report is required to address breach of duty, causation, or both. In cases of suspected negligence, the standard established in Bolam v Friern Hospital Management Committee [1957] and Bolitho v City and Hackney Health Authority [1998] provides the framework for assessing whether a dentist acted in accordance with a responsible body of professional opinion. An expert must be able to articulate whether a specific clinical intervention or omission falls below these recognised standards.

Causation presents complex challenges in dental claims, particularly where pre-existing pathology is involved. An expert should assist the court by distinguishing the impact of the alleged negligence from the natural progression of pre-existing disease, such as advanced periodontitis or long-standing caries. A granular analysis—utilising historical periodontal charting, radiographic bone loss assessment, and patient-specific risk factors—is often necessary to determine whether the injury was a direct result of the alleged breach or the inevitable outcome of pre-existing conditions.

Common Pitfalls in Expert Instruction

Solicitors should ensure the expert is provided with a comprehensive set of clinical records. Documentation is the foundation of the expert’s report; without contemporaneous notes, the expert may struggle to evaluate the process of informed consent or the adequacy of the diagnostic assessment. Following Montgomery v Lanarkshire Health Board [2015], an expert must scrutinise whether the patient was informed of the material risks associated with a procedure, which in dentistry includes specific risks such as nerve damage or failure of complex restorative work.

Another pitfall is the over-reliance on radiographic evidence without adequate clinical context. An expert should weigh radiographic findings against the clinical notes to reach a balanced conclusion. Furthermore, an expert should avoid opining on matters outside their field of clinical competence. For example, requesting a restorative dentist to comment on the complexities of a mandibular fracture reduction may not provide the court with the necessary specialist insight, as such matters typically fall within the remit of oral and maxillofacial surgery.

Procedural Considerations under CPR Part 35

The CPR provides mechanisms for the management of expert evidence to ensure proportionality. Under CPR 35.7, the court may direct the appointment of a single joint expert (SJE) when the issues are narrow or technical. Instructions to an SJE are governed by CPR 35.8. While an SJE can be an efficient way to manage costs, cases involving significant conflict between clinical opinions may require the instruction of separate experts. When separate experts are instructed, they may be directed by the court or arranged by the parties to engage in discussions under CPR 35.12 to identify areas of agreement and disagreement. The resulting joint statement allows the court to focus on the core areas of dispute.

If an expert requires further instruction or has questions regarding the interpretation of the court’s direction, CPR 35.14 allows them to request directions from the court. The instructing legal team should facilitate the expert’s independence, providing all relevant materials while allowing them to form their professional opinion without interference.

Selecting the Right Expert

The selection process should involve a thorough review of the expert’s curriculum vitae to ensure their active practice or recent clinical experience aligns with the specific issues of the case. By matching the discipline of the expert—whether endodontic, periodontal, restorative, or surgical—to the specific clinical facts, legal teams help ensure that the expert evidence provided is both accurate and persuasive.