Fig. 3
From: New measure of functional tooth loss for successful Oral ageing: a cross-sectional study
The Kennedy classification of participants (n = 744). Different colours indicate different classes of the Kennedy classification. The size of the rings represents the proportions of each type. The inner ring shows the classes of maxillary teeth, and the outer ring shows that of mandibular teeth. a the Kennedy classification of people with ≤12 functional tooth loss; b the Kennedy classification of people with > 12 functional tooth loss