Objective: To present a work model for person-centred oral healthcare in home environments of older adults, combining clinical practice, organisational collaboration, and co-designed digital infrastructure. Background: Older adults with complex care needs risk losing access to dental services, resulting in undetected oral health problems and declining wellbeing. To address this gap, a new collaborative model was developed within a cluster randomized project involving 480 older individuals. The new work model bridges over boundaries of dental care and municipal care and gives improved oral health through shared planning, decision support, and joint home visits, ensuring tailored care aligned with each person's daily life. Materials and Methods: Oral health planning was structured through decision coaching, facilitating learning between older adults, dental and municipal care professionals. Dental care delivery includes assessments, preventive measures, extractions, and prosthetic adjustments during home visits. A digital platform, co-designed with older persons, care staff, developers, and researchers, supports coordination, documentation, and communication across services. Proposed to be integrated into routine workflows, the platform reflects the needs of multiple users. Projected Results: The intervention is designed to strengthen interprofessional collaboration, support person-centred care planning, and enable contextually adapted dental services within municipal care. The digital platform is expected to facilitate continuity and provide the basis for mapping oral health status among groups typically absent from national data collections. Anticipated Conclusion: The GAPA model positions oral health as a shared responsibility in integrated home care. Practice-based innovation combined with organisational coordination and digital infrastructure offers a scalable pathway to sustainable, person-centred oral health care practice. Success is contingent on co-design, contextual fit, leadership and measured implementation fidelity.