AbstractObjectivesIn many countries increasing use is being made of dental care professionals (DCPs) to provide aspects of clinical activity previously undertaken by dentists. This study evaluates the differences in practice efficiency associated with the utilisation of DCPs in the provision of General Dental Services in the National Health Service (NHS) in England.MethodsOne hundred twenty‐one NHS practices completed a questionnaire and shared practice information held at the NHS Business Services Authority. Practice efficiency was estimated using data envelopment analysis with the robustness of the findings checked using Stochastic Frontier Model estimation.ResultsDental practices operated at an estimated mean level of technical efficiency of 64%. Variations among practices in the use of DCPs were not associated with variations in practice efficiency after controlling for other staffing levels, patient population characteristics and practice variables.ConclusionsThe current NHS dental contract limits the potential for efficiency improvements by setting annual practice activity targets that produce little incentive for role substitution. Whilst DCPs may by practising efficiently, this is not reflected in practice‐level efficiency, possibly because of dentists using the time released for other non‐NHS activity.