Objectives: Psychiatric inpatients suffer from poorer oral health than the general population, and difficulties in accessing necessary dental treatment remain even when a dedicated dental service is available within the psychiatric hospital. The aim of this study was to identify barriers to access dental care from the point of view of dentists working within French psychiatric hospitals.Methods: The relatively small number of dentists working in psychiatric hospitals necessitated a qualitative approach. Semi-structured interviews were conducted, recorded, transcribed and coded in a conventional content analysis approach.Results: Eight interviews were conducted. Six of the dentists interviewed were men, and two were women. Three of them worked full-time in a psychiatric facility, while the other five worked partly in the hospital and partly in private practice. The average duration for interviews was 54 minutes (minimum 24 min, maximum 89 min). The interviews highlighted three dimensions of barriers to access to dental care. The first dimension was directly related to the patient. This may be linked to the patient's psychiatric disorder but not necessarily. This also encompasses refusal of care. A second dimension regrouped events related to the organization of the hospital (locally), such as communication issues between staff members within the dental office, and with other staff members from the psychiatric ward. A third dimension included difficulties related to the overall organization of the healthcare system, including financial issues and deinstitutionalization.Conclusions: In-site dental consultations appear as an interesting tool to enhance access to oral care for psychiatric inpatients. However, difficulties remain from the dentists' perspective.