Why don't general dental practitioners test for diabetes in periodontitis patients? How infrastructure, role identity and self-efficacy can prevent effective shared care.

Aim To explore the attitudes of general dental practitioners (GDPs) towards testing for diabetes in periodontitis patients amid recommendations from professional organisations that dentists and oral health professionals are well-positioned to support the diagnosis of diabetes in primary dental care.Method GDPs were selected based on purposeful sampling. The number of GDPs recruited was dependent on thematic saturation. Semi-structured telephone interviews were conducted with all recruited GDPs. Interviews were audio recorded and transcribed verbatim. Thematic analysis was utilised to generate initial codes and subsequent themes.Results Fifteen GDPs participated in this qualitative study. Three main interrelated themes emerged: 1) there is an inadequate infrastructure within the current NHS; 2) the difference in the definition and threshold of the social and professional roles and identities of GDPs; and 3) there is a low self-efficacy to testing due to a perceived lack of knowledge.Conclusions This qualitative study has identified the barriers to and enablers for testing for diabetes in patients with periodontitis attending general dental practices in England. The findings have the potential to influence interventions and policies going forward to improve the co-management of diabetes and periodontitis within primary healthcare.