This project is based on the International Classification of Functioning, Disability and Health (ICF) of the World Health Organization – a globally recognized framework for systematically capturing functioning, health, and their impact on daily life. Building on this, an international consensus process led to the development of the ICF Core Set for Oral Health. For the first time, it defines the key aspects of functioning relevant to oral health in a standardized way. ClinFIT Oral Health aims to translate this content into a clinically applicable instrument. The goal is to create a practical, internationally compatible tool that facilitates the assessment of functional limitations in everyday dental practice and strengthens patient-centered care.