Fig. 2

Process characterizing periodontitis. ‘Process’ subsumes two counter concepts of ‘molecular pathogenesis of periodontitis’, a process of development of periodontitis, and ‘medical treatment for periodontitis’, a process of recovery from periodontitis. Individual processes are divided into sub-processes by ‘has_part’ relationships. Please note ‘preceded by’ relations (causal relationships) characterize the sub-processes of ‘molecular pathogenesis of periodontitis’, which indicates essential features following a specified event in time causing a disease state as a consequence in periodontitis